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Journal of Fungi logoLink to Journal of Fungi
. 2024 Dec 26;11(1):8. doi: 10.3390/jof11010008

New Species of Diaporthales (Ascomycota) from Diseased Leaves in Fujian Province, China

Xiayu Guan 1, Taichang Mu 2, Nemat O Keyhani 3, Junya Shang 2, Yuchen Mao 2, Jiao Yang 2, Minhai Zheng 2, Lixia Yang 2, Huili Pu 2, Yongsheng Lin 2, Mengjia Zhu 2, Huajun Lv 2, Zhiang Heng 2, Huiling Liang 4, Longfei Fan 5, Xiaoli Ma 6, Haixia Ma 7, Zhenxing Qiu 8,*, Junzhi Qiu 2,*
Editor: Miloś Č Stupar
PMCID: PMC11766186  PMID: 39852428

Abstract

Fungal biota represents important constituents of phyllosphere microorganisms. It is taxonomically highly diverse and influences plant physiology, metabolism and health. Members of the order Diaporthales are distributed worldwide and include devastating plant pathogens as well as endophytes and saprophytes. However, many phyllosphere Diaporthales species remain uncharacterized, with studies examining their diversity needed. Here, we report on the identification of several diaporthalean taxa samples collected from diseased leaves of Cinnamomum camphora (Lauraceae), Castanopsis fordii (Fagaceae) and Schima superba (Theaceae) in Fujian province, China. Based on morphological features coupled to multigene phylogenetic analyses of the internal transcribed spacer (ITS) region, the large subunit of nuclear ribosomal RNA (LSU), the partial beta-tubulin (tub2), histone H3 (his3), DNA-directed RNA polymerase II subunit (rpb2), translation elongation factor 1-α (tef1) and calmodulin (cal) genes, three new species of Diaporthales are introduced, namely, Diaporthe wuyishanensis, Gnomoniopsis wuyishanensis and Paratubakia schimae. This study contributes to our understanding on the biodiversity of diaporthalean fungi that are inhabitants of the phyllosphere of trees native to Asia.

Keywords: Diaporthe, multigene phylogeny, new species, Paratubakia, taxonomy

1. Introduction

The various fungi that inhabit the outer surface and the inner microenvironment of plant leaves are referred to as phyllosphere fungi [1,2]. These fungi include saprophytes, pathogens, epiphytes and endophytes and can affect plant growth and/or help enhance resistances to biotic and abiotic stress [3,4]. There is significant diversity of phyllosphere fungi whose members span diverse phyla in the Fungal Kingdom, particularly within the Ascomycota and the Basidiomycota [5]. Although studies examining the diversity of fungi in different trophic levels remain limited, fungal diversity on leaves has been shown to be lower than in soil but higher than that found on flowers and fruits, with several studies focusing on entomopathogenic fungi reporting highest diversity in soil, followed by leaves, leaf litter and twigs [6,7]. However, knowledge concerning phyllosphere fungal diversity particularly within the Diaporthales remains limited.

The camphor and timber trees, Cinnamomum camphora (L.) J. Presl and Castanopsis fordii Hance, and the flowering plant, Schima superba Gardner & Champ., are widely distributed in south-eastern China, where they can be the dominant members of forest ecosystems [8,9,10]. They play important roles in stabilizing soil, reducing erosion and protecting water sources [11,12]. In addition, these trees have important economic values, with various parts of certain members of the genus Castanopsis and Cinnamomum frequently employed as part of traditional medicinal practices [11,13]. The crude extracts and chemical constituents derived from Castanopsis exhibit a wide range of biological activities, including anti-inflammatory, antioxidant, antimicrobial and other effects [11]. Cinnamic acid, eugenol and cinnamyl alcohol from Cinnamomum were the active components of cardiovascular protection [13]. The fungi that associate with Cinnamomum, Castanopsis and Schima plants play different roles, with information concerning fungal Diaporthales diversity lacking, especially from diseased leaves [14,15]. Here, we report on the isolation and characterization of new fungal species isolated from diseased leaves of Cinnamomum camphora, Castanopsis fordii and Schima superba in Fujian Province, China. Based on morphological and molecular phylogenetic analyses, we identify three new fungal species, namely Diaporthe wuyishanensis sp. nov. in Diaporthaceae, Gnomoniopsis wuyishanensis sp. nov. in Gnomoniaceae, and Paratubakia schimae sp. nov. in Tubakiaceae. Detailed descriptions and illustrations of the three new species are given. To the best of our knowledge, our data include the first identification and description of Paratubakia, (P. schimae sp. nov.) in China.

2. Materials and Methods

2.1. Specimen Sources, Isolation, Morphological Characterization and Selection

Fungal spot disease specimens found on leaves of Cinnamomum camphora, Castanopsis fordii and Schima superba were collected at Meihua Mountain National Nature Reserve, Longyan City and Wuyi Mountain National Nature Reserve, Wuyishan City in Fujian Province, China. The two sampling sites are representative areas of large Cinnamomum, Castanopsis and Schima forests, with high plant diversity, abundant precipitation and more mountains. The leaf specimens were placed in paper bags, which were labeled with the details concerning plant hosts, locations, geographical features and altitudes [16]. Specimens were taken to laboratory and treated as described in Photita et al. [17]. The fungi were isolated using a tissue separation method as follows: ~25 mm2 diseased tissue fragments were cut from leaves displaying spot symptoms. The fragments were first sterilized by soaking in 75% ethanol for 60 s and then rinsed once with sterile deionized water for 20 s. Following this, samples were placed in 5% NaOCl for 30 s and then rinsed three times with sterile deionized water for 60 s each time. Finally, fragments were dried on sterilized filter paper and then placed onto potato dextrose agar (PDA) plates for fungal outgrowth [17]. Pure colonies were obtained after sequential passage via culturing of growing fungal colony edges on PDA. Plates were incubated in a light incubator (12:12) at 25 °C. Strains were presumptively identified following three steps: firstly, each strain was sequenced with ITS and tef1 phylogenetic markers. The BLASTn searches were used to determine the most closely related taxa in the GenBank database with the ITS sequences. Secondly, the family or genus level phylogenetic analysis was conducted using ITS-tef1 sequences. For Diaporthe, strains were assigned to Diaporthe different complexes and referred to Dissanayake et al. [18]. Thirdly, amplification of other different loci and phylogenetic analyses were conducted using different multi-locus datasets. Ultimately, herbarium materials were kept at the Herbarium Mycologicum Academiae Sinicae, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China (HMAS), and living cultures were maintained in the China General Microbiological Culture Collection Center (CGMCC). Colony features were imaged with digital camera (Canon EOS 6D MarkII, Tokyo, Japan) at 7 and 15 days after inoculation in indicated media. Microstructures were observed and photographed using a stereo microscope (Nikon SMZ745, Tokyo, Japan) and biological microscope (Ni-U, Tokyo, Japan) with a digital camera (Olympus, Tokyo, Japan) using differential interference contrast (DIC) [19]. Structural measurements were measured using Digimizer 5.4.4 software (https://www.digimizer.com).

2.2. DNA Extraction, PCR Amplification and Sequencing

Fungal DNA was directly extracted from growing mycelia on PDA after 5–7 days of growth using the Fungal DNA Mini Kit (OMEGA-D3390, Feiyang Biological Engineering Co., Ltd., Guangzhou, China) according to the product manual. Nucleotide sequences corresponding to seven genetic loci were amplified by polymerase chain reaction (PCR) using a Bio-Rad Thermocycler (Hercules, CA, USA). For Diaporthe, the internal transcribed spacer (ITS) region was amplified with primers ITS5 and ITS4, the calmodulin (cal) gene with primers CAL-228F and CAL-737R, the histone H3 (his3) gene with primers CYLH3F and H3-1b, the translation elongation factor 1-α (tef1) gene with primers EF1-728F and TEF1-986R and the beta-tubulin (tub2) gene with primers Bt2a and Bt2b as described [20,21,22,23]. The same primers were used for Gnomoniopsis, with the exception of amplification of the tef1 gene, which was performed using primers EF1-728F and EF-2 [20,21,23,24]. For Paratubakia, the ITS and tub2 sequences were amplified with the primers listed above, and in addition, the LSU gene was amplified with primers LROR and LR5, the DNA-directed RNA polymerase II subunit (rpb2) gene with primers fRPB2-5F and fRPB2-7cR and the tef1 gene with primers EF1-728F and EF-2 [20,21,23,24,25,26,27]. The PCR thermal cycle program, primer pairs and sequence are listed in Table 1. The PCR reaction mixture was 25 µL, containing 12.5 μL of 2 × Spark Taq PCR Master Mix (Without Dye) (Shandong Sparkjade Biotechnology Co., Ltd., Jinan, China), 1 μL of template DNA, 1 µL each 10 µM primer (Tsingke, Fuzhou, China) and 9.5 µL of sterile water. Qualified PCR products were checked on electrophoresed in 1% agarose gel (RM19009 and RM02852, ABclonal) and were sequenced by a commercial company (Fuzhou Sunya Biotechnology Co., Ltd., Fuzhou, China).

Table 1.

Target sequences, primer pairs and PCR programs used for application in this study.

Loci PCR Primers Sequence (5′–3′) PCR Cycles References
ITS ITS5 GGA AGT AAA AGT CGT AAC AAG G (95 °C: 30 s, 55 °C: 30 s, 72 °C: 1 min) × 35 cycles [20]
ITS4 TCC TCC GCT TAT TGA TAT GC
LSU LROR GTA CCC GCT GAA CTT AAG C (95 °C: 30 s, 52 °C: 30 s, 72 °C: 1 min) × 35 cycles [25,26]
LR5 TCC TGA GGG AAA CTT CG
cal CAL-228F GAG TTC AAG GAG GCC TTC TCC C (95 °C: 30 s, 54 °C: 30 s, 72 °C: 1 min) × 35 cycles [21]
CAL-737R CAT CTT CTG GCC ATC ATG G
rpb2 fRPB2-5F GAY GAY MGW GAT CAY TTY GG (95 °C: 30 s, 56 °C: 30 s, 72 °C: 1 min) × 35 cycles [27]
fRPB2-7cR CCC ATW GCY TGC TTM CCC AT
his3 CYLH3F AGG TCC ACT GGT GGC AAG (95 °C: 30 s, 58 °C: 30 s, 72 °C: 1 min) × 35 cycles [22,23]
H3-1b GCG GGC GAG CTG GAT GTC CTT
tef1 EF1-728F CAT CGA GAA GTT CGA GAA GG (95 °C: 30 s, 48 °C: 30 s, 72 °C: 1 min) × 35 cycles [21,24]
EF-2 GGA RGT ACC AGT SAT CAT GTT
EF1-728F CAT CGA GAA GTT CGA GAA GG (95 °C: 30 s, 52 °C: 30 s, 72 °C: 1 min) × 35 cycles [21]
TEF1-986R TAC TTG AAG GAA CCC TTA CC
tub2 Bt2a GGT AAC CAA ATC GGT GCT GCT TTC (95 °C: 30 s, 53 °C: 30 s, 72 °C: 1 min) × 35 cycles [23]
Bt2b ACC CTC AGT GTA GTG ACC CTT GGC

2.3. Sequence Alignment and Phylogenetic Analysis

New sequences generated from this study were deposited in GenBank (Table 2, Table 3 and Table 4). Reference sequences were downloaded from GenBank (Table 2, Table 3 and Table 4). Sequences were aligned with MAFFT v.7 (http://mafft.cbrc.jp/alignment/server/, (accessed on 29 August 2024)) and corrected manually by MEGA 7 software [28,29]. The concatenated aligned sequences were analyzed by Maximum likelihood (ML) and Bayesian inference (BI) methods using the CIPRES Science Gateway portal (https://www.phylo.org/, accessed on (30 August 2024)) and Phylosuite software v. 1.2.3 [30,31]. The Maximum likelihood (ML) analysis was performed with 1000 rapid bootstrap replicates using the GTRGAMMA substitution model by RaxML-HPC2 on ACCESS v. 8.2.12 [32,33]. For Bayesian inference (BI) analyses, Partition Finder2 was used to select the evolutionary model for each locus [34]. Four simultaneous Markov Chain Monte Carlo (MCMC) chains were initiated from random trees with 1 million generations for the Diaporthe, 15 million generations for the Gnomoniopsis and 5 million generations for the Tubakiaceae analyses. In the tests, analyses were sampled every 100 generations. The first 25% of trees were discarded, and remaining trees were used to determine posterior probabilities (PPs). System diagrams were plotted using FigTree v. 1.4.5_pre (https://github.com/rambaut/figtree/releases (accessed on 3 September 2024)).

Table 2.

Information of specimens and GenBank accession numbers of the sequences used in the analysis of the Diaporthe virgiliae species complex.

Species Culture/Voucher Host/Substrate Locations GenBank Accession Number
ITS tub2 tef1 cal his3
Diaporthe wuyishanensis sp. nov. CGMCC3.27490 * Cinnamomum camphora China PQ385851 PQ404036 PQ404034 PQ404030 PQ404032
Diaporthe wuyishanensis sp. nov. CGMCC3.27491 Cinnamomum camphora China PQ385852 PQ404037 PQ404035 PQ404031 PQ404033
Diaporthe grandiflori SAUCC194.84 * Heterostemma grandiflorum China MT822612 MT855809 MT855924 MT855691 MT855580
Diaporthe heterophyllae CBS 143769 * Acacia heterophylla France MG600222 MG600226 MG600224 MG600218 MG600220
Diaporthe penetriteum LC3353 * Camellia sinensis China KP714505 KP714529 KP714517 KP714493
Diaporthe penetriteum NKDL–3–19 Citrus sinensis China MW202992 MW208612 MW221578 MW221746 MW221677
Diaporthe shennongjiaensis CNUCC 201905 Juglans regia China MN216229 MN227012 MN224672 MN224551 MN224560
Diaporthe virgiliae CMW 40748 Virgilia oroboides South Africa KP247566 KP247575
Diaporthe virgiliae CMW 40752 Virgilia oroboides South Africa KP247570 KP247579
Diaporthe virgiliae CMW40755 * Virgilia oroboides South Africa KP247573 KP247582
Diaporthe virgiliae SCF 006–607 Cyclopia subternata South Africa MW959685 MW979256 MT833892 MT833906
Diaporthe zaofenghuang CGMCC3.20271 * Prunus persica China MW477883 MW480875 MW480871 MW480867 MW480863
Diaporthe zaofenghuang TZFH3 Prunus persica China MW477884 MW480876 MW480872 MW480868 MW480864

Notes: Newly generated sequences are in bold. The ex-type, ex-epitype and ex-neotype strains are marked with *.

Table 3.

Information of specimens and GenBank accession numbers of the sequences used in the analysis of Gnomoniopsis.

Species Culture/Voucher Host/Substrate Locations GenBank Accession Number
ITS tef1 tub2
Gnomoniopsis agrimoniae MFLUCC 14–0844 * Agrimonia eupatoria Italy MF377585
Gnomoniopsis agrimoniae MFLUCC 17–1662 Agrimonia eupatoria Italy MF377586
Gnomoniopsis alderdunensis CBS 125680 * Rubus parviflorus USA GU320825 GU320801 GU320787
Gnomoniopsis alderdunensis CBS 125681 Rubus parviflorus USA GU320827 GU320802 GU320789
Gnomoniopsis alderdunensis CBS 125679 Rubus pedatus USA GU320826 GU320813 GU320788
Gnomoniopsis angolensis CPC 33595 = CBS 145057 * unknown host plant Angola MK047428
Gnomoniopsis castanopsidis CFCC 54437 * Castanopsis hystrix China MZ902909 MZ936385
Gnomoniopsis castanopsidis CFCC 54438 Castanopsis hystrix China MZ902910 MZ936386
Gnomoniopsis chamaemori CBS 804.79 Rubus chamaemorus Finland GU320817 GU320809 GU320777
Gnomoniopsis chinensis CFCC 52286 * Castanea mollissima China MG866032 MH545370 MH545366
Gnomoniopsis chinensis CFCC 52288 Castanea mollissima China MG866034 MH545372 MH545368
Gnomoniopsis chinensis CFCC 52287 Castanea mollissima China MG866033 MH545371 MH545367
Gnomoniopsis chinensis CFCC 52289 Castanea mollissima China MG866035 MH545373 MH545369
Gnomoniopsis clavulata CBS 121255 Quercus falcata USA EU254818 EU221934 EU219211
Gnomoniopsis comari CBS 807.79 Comarum palustre Finland EU254822 GU320814 GU320779
Gnomoniopsis comari CBS 809.79 Comarum palustre Switzerland EU254823 GU320794 GU320778
Gnomoniopsis comari CBS 806.79 Oryza sativa UK EU254821 GU320810 EU219156
Gnomoniopsis daii CFCC 54043 * Castanea mollissima China MZ902911 MZ936387 MZ936403
Gnomoniopsis daii CFCC 55517 Castanea mollissima China MN598671 MN605519 MN605517
Gnomoniopsis daii CMF002B Castanea mollissima China MN598672 MN605520 MN605518
Gnomoniopsis daii CFCC 55294B Quercus aliena China MZ902912 MZ936388 MZ936404
Gnomoniopsis diaoluoshanensis SAUCC DL0963 * Castanopsis chinensis China ON753744 ON759769 ON759777
Gnomoniopsis diaoluoshanensis SAUCC DL0964 Castanopsis chinensis China ON753743 ON759768 ON759776
Gnomoniopsis diaoluoshanensis SAUCC DL0961 Castanopsis chinensis China ON753745 ON759770 ON759778
Gnomoniopsis fagacearum CFCC 54412 Castanopsis chunii China MZ902917 MZ936393 MZ936409
Gnomoniopsis fagacearum CFCC 54414 Castanopsis eyrei China MZ902915 MZ936391 MZ936407
Gnomoniopsis fagacearum CFCC 54288 Castanopsis faberi China MZ902913 MZ936389 MZ936405
Gnomoniopsis fagacearum CFCC 54316 * Lithocarpus glaber China MZ902916 MZ936392 MZ936408
Gnomoniopsis fagacearum CFCC 54439 Quercus variabilis China MZ902914 MZ936390 MZ936406
Gnomoniopsis fragariae = Gnomoniopsis fructicola CBS 121226 Fragaria vesca USA EU254824 EU221961 EU219144
Gnomoniopsis fragariae = Gnomoniopsis fructicola CBS 125671 Fragaria sp. USA GU320816 GU320793 GU320776
Gnomoniopsis fragariae = Gnomoniopsis fructicola CBS 208.34 Fragaria sp. USA EU254826 EU221968 EU219149
Gnomoniopsis guangdongensis CFCC 54443 * Castanopsis fargesii China MZ902918 MZ936394 MZ936410
Gnomoniopsis guangdongensis CFCC 54331 Castanopsis fargesii China MZ902919 MZ936395 MZ936411
Gnomoniopsis guangdongensis CFCC 54282 Castanopsis fargesii China MZ902920 MZ936396 MZ936412
Gnomoniopsis guttulata MS 0312 Agrimonia eupatoria Bulgaria EU254812
Gnomoniopsis hainanensis CFCC 54376 * Castanopsis hainanensis China MZ902921 MZ936397 MZ936413
Gnomoniopsis hainanensis CFCC 55877 Castanopsis hainanensis China MZ902922 MZ936398 MZ936414
Gnomoniopsis idaeicola CBS 125673 Rubus pedatus USA GU320824 GU320798 GU320782
Gnomoniopsis idaeicola CBS 125675 Rubus pedatus USA GU320822 GU320799 GU320783
Gnomoniopsis idaeicola CBS 125676 Rubus pedatus USA GU320821 GU320811 GU320784
Gnomoniopsis idaeicola CBS 125672 Rubus sp. USA GU320823 GU320797 GU320781
Gnomoniopsis idaeicola CBS 125674 Rubus sp. France GU320820 GU320796 GU320780
Gnomoniopsis lithocarpi SAUCC YN0743* Lithocarpus fohaiensis China ON753749 ON759765 ON759783
Gnomoniopsis lithocarpi SAUCC YN0742 Lithocarpus fohaiensis China ON753750 ON759764 ON759782
Gnomoniopsis macounii CBS 121468 Spiraea sp. USA EU254762 EU221979 EU219126
Gnomoniopsis mengyinensis SAUCC MY0293 * Castanea mollissima China ON753741 ON759766 ON759774
Gnomoniopsis mengyinensis SAUCC MY0296 Castanea mollissima China ON753742 ON759767 ON759775
Gnomoniopsis occulta CBS 125677 Potentilla sp. USA GU320828 GU320812 GU320785
Gnomoniopsis occulta CBS 125678 Potentilla sp. USA GU320829 GU320800 GU320786
Gnomoniopsis paraclavulata CBS 123202 Quercus alba USA GU320830 GU320815 GU320775
Gnomoniopsis quercicola IRAN 4313C = CBS 149773 * Quercus brantii Iran OR540614 OR561996 OR561907
Gnomoniopsis racemula CBS 121469 * Triticum aestivum USA EU254841 EU221889 EU219125
Gnomoniopsis rosae CPC 34440 = CBS 145085 * Rosa sp. New Zealand MK047451
Gnomoniopsis rossmaniae CFCC 54307 * Castanopsis hainanensis China MZ902923 MZ936399 MZ936415
Gnomoniopsis rossmaniae CFCC 55876 Castanopsis hainanensis China MZ902924 MZ936400 MZ936416
Gnomoniopsis sanguisorbae CBS 858.79 Sanguisorba minor Switzerland GU320818 GU320805 GU320790
Gnomoniopsis silvicola CFCC 54304 Castanopsis hystrix China MZ902925 MZ936401 MZ936417
Gnomoniopsis silvicola CFCC 54418 * Quercus serrata China MZ902926 MZ936402 MZ936418
Gnomoniopsis smithogilvyi MUT 401 Castanea sativa Italy HM142946 KR072537 KR072532
Gnomoniopsis smithogilvyi MUT 411 Castanea sativa New Zealand HM142948 KR072538 KR072533
Gnomoniopsis smithogilvyi CBS 130190 * Castanea sp. Australia JQ910642 JQ910645 JQ910639
Gnomoniopsis smithogilvyi CBS 130189 Castanea sp. Australia JQ910644 JQ910647 JQ910641
Gnomoniopsis smithogilvyi CBS 130188 Castanea sp. Australia JQ910643 KR072536 JQ910640
Gnomoniopsis tormentillae CBS 904.79 Potentilla sp. Switzerland EU254856 GU320795 EU219165
Gnomoniopsis wuyishanensis sp. nov. CGMCC3.27834 Castanopsis fordii China PQ381256 PQ404016 PQ404018
Gnomoniopsis wuyishanensis sp. nov. CGMCC3.27836 * Castanopsis fordii China PQ381257 PQ404017 PQ404019
Gnomoniopsis xunwuensis CFCC 53115 * Castanopsis fissa China MK432667 MK578141 MK578067
Gnomoniopsis xunwuensis CFCC 53116 Castanopsis fissa China MK432668 MK578142 MK578068
Gnomoniopsis yunnanensis SAUCC YN1659 * Castanea mollissima China ON753746 ON759771 ON759779
Gnomoniopsis yunnanensis SAUCC YN1657 Castanea mollissima China ON753747 ON759772 ON759780
Gnomoniopsis yunnanensis SAUCC YN1641 Castanea mollissima China ON753748 ON759773 ON759781
Melanconis stilbostoma CBS 109778 Betula pendula Australia DQ323524 EU221886 EU219104

Notes: Newly generated sequences are in bold. The ex-type, ex-epitype and ex-neotype strains are marked with *.

Table 4.

Information of specimens and GenBank accession numbers of the sequences used in the analysis of Tubakiaceae.

Species Culture/Voucher Host/Substrate Locations GenBank Accession Number
ITS LSU tef1 tub2 rpb2
Apiognomonioides supraseptata CBS 632.92 * Quercus glauca Japan MG976447 MG976448
Apiognomonioides supraseptata ATCC 58737 Quercus glauca Japan AF277127
Ellipsoidisporodochium photiniae SAUCC 210421 * Photinia serratifolia China OK175559 OK189532 OK206440 OK206442 OK206438
Ellipsoidisporodochium photiniae SAUCC 210423 Photinia serratifolia China OK175560 OK189533 OK206441 OK206443 OK206439
Greeneria uvicola FI12007 unknown host plant Uruguay HQ586009 GQ870619
Involutiscutellula rubra CBS 192.71 * Quercus phillyraeoides Japan MG591899 MG591993 MG592086 MG592180 MG976476
Involutiscutellula rubra MUCC 2303 Quercus phillyraeoides Japan MG591900 MG591994 MG592087 MG592181 MG976477
Oblongisporothyrium castanopsidis CBS 124732 Castanopsis cuspidata Japan MG591849 MG591942 MG592037 MG592131 MG976453
Oblongisporothyrium castanopsidis CBS 189.71 * Castanopsis cuspidata Japan MG591850 MG591943 MG592038 MG592132 MG976454
Obovoideisporodochium lithocarpi SAUCC 0748 * Lithocarpus fohaiensis China MW820279 MW821346 MZ996876 MZ962157 MZ962155
Obovoideisporodochium lithocarpi SAUCC 0745 Lithocarpus fohaiensis China MW820280 MW821347 MZ996877 MZ962158 MZ962156
Paratubakia schimae sp. nov. CGMCC3.27842 * Schima superba China PQ408642 PQ408644 PQ404020 PQ404022 PQ404024
Paratubakia schimae sp. nov. CGMCC3.27855 Schima superba China PQ408643 PQ408645 PQ404021 PQ404023 PQ404025
Paratubakia subglobosa CBS 124733 Quercus glauca Japan MG591913 MG592008 MG592102 MG592194 MG976489
Paratubakia subglobosa CBS 193.71 * Quercus glauca Japan MG591914 MG592009 MG592103 MG592195 MG976490
Paratubakia subglobosoides MUCC 2293 * Quercus glauca Japan MG591915 MG592010 MG592104 MG592196 MG976491
Phaeotubakia lithocarpicola CFCC 54422 * Lithocarpus glaber China OP951017 OP951015 OQ127584 OQ127586
Phaeotubakia lithocarpicola RK7CX Lithocarpus glaber China OP951018 OP951016 OQ127585 OQ127587
Racheliella saprophytica MFLUCC 12–0298 * Syzygium cumini Thailand KJ021933 KJ021935
Racheliella wingfieldiana CBS 143669 * Syzigium guineense South Africa MG591911 MG592006 MG592100 MG592192 MG976487
Saprothyrium thailandense MFLUCC 12–0303 * Decaying leaf Thailand MF190163 MF190110
Saprothyrium thailandense MFLUCC 17–1672 Decaying leaf Thailand MF190164 MF190111
Sphaerosporithyrium mexicanum CPC 32258 Quercus eduardi Mexico MG591895 MG591989 MG592082 MG592176
Sphaerosporithyrium mexicanum CPC 33021 * Quercus eduardi Mexico MG591896 MG591990 MG592083 MG592177 MG976473
Tubakia americana CBS 129014 Quercus macrocarpa USA MG591873 MG591966 MG592058 MG592152 MG976449
Tubakia byeongjinii CDH040 Quercus variabilis Republic of Korea OR727896 OR727898 OR732731
Tubakia byeongjinii CDH041 * Quercus variabilis Republic of Korea OR727897 OR727899 OR732732
Tubakia californica CPC 31505 * Quercus kelloggii USA MG591835 MG591928 MG592023 MG592117 MG976451
Tubakia cyclobalanopsidis CFCC 55979 * Quercus glauca China OP114639 OP254247 OP329290
Tubakia cyclobalanopsidis CFCC 55973 Quercus glauca China OP114640 OP254248 OP329291
Tubakia dryina CBS 112097 * Quercus robur Italy MG591851 MG591944 MG592039 MG592133 MG976455
Tubakia dryinoides MUCC2291 Castanea crenata Japan MG591877 MG591969 MG592062 MG592156 MG976460
Tubakia dryinoides MUCC2292 * Quercus phillyraeoides Japan MG591878 MG591970 MG592063 MG592157 MG976461
Tubakia hallii CBS 129013 * Quercus stellata USA MG591880 MG591972 MG592065 MG592159 MG976462
Tubakia hallii CBS 12901 Quercus stellata USA MG591881 MG591973 MG592066 MG592160
Tubakia iowensis CBS 129012 * Quercus macrocarpa USA MG591879 MG591971 MG592064 MG592158
Tubakia japonica ATCC 22472 * Castanea crenata Japan MG591886 MG591978 MG592071 MG592165 MG976465
Tubakia koreana KCTC46072 Quercus mongolica Republic of Korea KP886837
Tubakia liquidambaris CBS 139744 Liquidambar styraciflua USA MG605068 MG605077 MG603578
Tubakia lushanensis SAUCC 1921 Quercus palustris China MW784677 MW784850 MW842262 MW842265 MW842268
Tubakia lushanensis SAUCC 1923 * Quercus palustris China MW784678 MW784851 MW842261 MW842264 MW842267
Tubakia macnabbii CBS 137349 * Quercus palustris USA MG605069 MG603579
Tubakia melnikiana CPC 32255 * Quercus canbyi Mexico MG591893 MG591987 MG592080 MG592174 MG976472
Tubakia oblongispora MUCC 2295 * Quercus serrata Japan MG591897 MG591991 MG592084 MG592178 MG976474
Tubakia paradryinoides MUCC 2294 * Quercus acutissima Japan MG591898 MG591992 MG592085 MG592179 MG976475
Tubakia quercicola CFCC 55106 * Quercus aliena var. acuteserrata China OP114635 OP254243 OP254289
Tubakia quercicola CFCC 54912 Quercus aliena var. acuteserrata China OP114636 OP254244 OP254290
Tubakia seoraksanensis CBS 127490 * Quercus mongolica Republic of Korea MG591907 KP260499 MG592094 MG592186
Tubakia seoraksanensis CBS 127491 Quercus mongolica Republic of Korea HM991735 KP260500 MG592095 MG592187 MG976484
Tubakia sierrafriensis CPC 33020 * Quercus eduardi Mexico MG591910 MG592005 MG592099 MG592191 MG976486
Tubakia suttoniana CBS 639.93 Quercus sp. Italy MG591921 MG592016 MG592110 MG592202 MG976493
Tubakia tiffanyae CBS 137345 * Quercus rubra USA MG605081 MG603581

Notes: Newly generated sequences are in bold. The ex-type, ex-epitype and ex-neotype strains are marked with *.

3. Results

3.1. Phylogenetic Analyses

For the Diaporthe virgiliae species complex, the concatenated sequences dataset for the ITS, cal, his3, tef1 and tub2 genes were analyzed. The alignment included 13 taxa with Diaporthe shennongjiaensis as the outgroup (CNUCC 201905) (Figure 1). The sequence dataset contained 2653 characters (cal: 1–468, his3: 469–936, ITS: 937–1528, tef1: 1529–1865, tub2: 1866–2653) including gaps. Of these, 2418 characters were constant, 148 variable characters were parsimony-uninformative and 87 characters were parsimony informative. The SYM + I model was proposed for ITS, and the GTR model was proposed for tef1, and the HKY + I model was proposed for cal, his3 and tub2. The topology of Bayesian analyses was almost identical to the ML tree; thus, the Bayesian tree is shown.

Figure 1.

Figure 1

Consensus tree of Diaporthe virgiliae species complex inferred from Bayesian inference analyses based on the combined ITS, cal, his3, tef1 and tub2 sequence dataset, with Diaporthe shennongjiaensis (CNUCC 201905) as the outgroup. The Maximum likelihood (ML) bootstrap support values and Bayesian posterior probabilities (BPPs) above 80% and 0.90 are shown at the nodes. Strains marked with “T” are ex-type, ex-epitype and ex-neotype. The isolates from this study are indicated in red.

For Gnomoniopsis phylogenetic analyses, the concatenated sequence dataset combining the ITS, tef1 and tub2 gene loci was used. The alignment included 73 taxa with Melanconis stilbostoma as the outgroup (CBS 109778) (Figure 2). The sequence dataset contained 2584 characters (ITS: 1–564, tef1: 565–1710, tub2: 1711–2584) including gaps. Of these, 1462 characters were constant, 142 variable characters were parsimony-uninformative and 980 characters were parsimony informative. The GTR + I + G model was proposed for ITS, tef1 and tub2 analysis. The topology of the Bayesian analyses was almost identical to the ML tree; thus, the Bayesian tree is shown.

Figure 2.

Figure 2

Consensus tree of Gnomoniopsis inferred from Bayesian inference analyses based on the combined ITS, tef1 and tub2 sequence dataset, with Melanconis stilbostoma (CBS 109778) as the outgroup. The Maximum likelihood (ML) bootstrap support values and Bayesian posterior probabilities (BPPs) above 80% and 0.90 were shown at the nodes. Strains marked with “T” are ex-type, ex-epitype and ex-neotype. The isolates from this study are indicated in red.

To infer the interspecific relationships between Paratubakia within Tubakiaceae, a dataset consisting of ITS, LSU, rpb2, tef1 and tub2 sequences was assembled and analyzed. The alignment included 52 taxa with Greeneria uvicola (FI12007) as the outgroup (Figure 3). The sequence dataset contained 3809 characters (ITS: 1–666, LSU: 667–1516, rpb2: 1517–2501, tef1: 2502–3217, tub2: 3218–3809) including gaps. Of these, 2473 characters were constant, 148 variable characters were parsimony-uninformative and 1188 characters were parsimony informative. The GTR + I + G model was proposed for ITS, LSU, rpb2 and tub2, and the HKY + I + G model was proposed for tef1 analyses. The topology of Bayesian analysis was almost identical to the ML tree; thus, the Bayesian tree is shown.

Figure 3.

Figure 3

Consensus tree of Tubakiaceae inferred from Bayesian inference analyses based on the combined ITS, LSU, rpb2, tef1 and tub2 sequence dataset, with Greeneria uvicola (FI12007) as the outgroup. The Maximum likelihood (ML) bootstrap support values and Bayesian posterior probabilities (BPPs) above 80% and 0.90 were shown at the nodes. Strains marked with “T” are ex-type, ex-epitype and ex-neotype. The isolates from this study are indicated in red.

3.2. Taxonomy

3.2.1. Diaporthe wuyishanensis W.B. Zhang and J.Z. Qiu, sp. nov., Figure 4

MycoBank Number: MB856022

Etymology: the epithet “wuyishanensis” refers to the locality, Wuyi Mountain National Nature Reserve.

Holotype: China: Fujian Province, Wuyi Mountain National Nature Reserve, 27°38′37.88″ N, 117°55′52.39″ E, on diseased leaves of Cinnamomum camphora, 7 September 2022, T.C. Mu, holotype HMAS 352949, ex-holotype living culture CGMCC3.27490.

Figure 4.

Figure 4

Diaporthe wuyishanensis (HMAS 352949). (a) Diseased leaves of Cinnamomum camphora; (b,c) surface and reverse sides of colony after 7 days on PDA (d,e) and 14 days; (f,g) conidiomata; (h) conidiogenous cells and conidia; and (i,j) alpha conidia. Scale bars: (hj) 10 µm.

Description: Asexual morphs: Conidiomata on PDA medium, coriaceous, pycnidial, solitaryor aggregated, superfical, dark brown to black, globose to subglobose, creamy yellowish conidial droplets exuded from ostioles. Conidiophores reduced to conidiogenous cells. Conidiogenous cells hyaline, phialidic, densely aggregated, cylindrical or clavate, straight to slightly curved, 19.7–22.4 × 1.7–2.3 μm, n = 20. Conidia septate, hyaline, smooth, cylindrical or subcylindrical, cylindric-clavate, 4.3–6.5 × 1.4–2.6 μm, mean = 5.6 × 1.9 μm, L/W ratio = 3.0, n = 30. Beta conidia, gamma conidia and sexual morph not observed.

Culture characteristics: Colonies on PDA were fluffy, and aerial mycelia were abundant, grayish in the center and white at the edge. The surface was initially white, then became pale yellow with age and reverse grayish yellow spots in the middle. Colonies on PDA covered 90 mm plates after 1 week at 25 °C, growth rate 11.8–12.5 mm/day.

Other materials examined: China: Fujian Province, Wuyi Mountain National Nature Reserve, 27°38′37.88″ N, 117°55′52.39″ E, on diseased leaves of Cinnamomum camphora, 7 September 2022, T.C. Mu, paratype HMAS 352950, ex-paratype living culture CGMCC3.27491.

Notes: In this study, multigene phylogenetic analysis showed that Diaporthe wuyishanensis (CGMCC3.27490 and CGMCC3.27491) formed an independent clade (92% ML/0.99 PP, Figure 1) with Diaporthe grandiflori [35]. However, Diaporthe wuyishanensis distinguished from Diaporthe grandiflori by ITS and tef1 loci comparison (32/552 in ITS and 19/317 in tef1). Morphologically, the alpha conidia of Diaporthe wuyishanensis are smaller than Diaporthe grandiflori (4.3–6.5 × 1.4–2.6 vs. 6.3–8.3 × 2.8–3.3 μm), and Diaporthe grandiflori produces alpha conidia and beta conidia, whereas Diaporthe wuyishanensis appears to only produce alpha conidia. Therefore, we introduce this fungus as a new species.

3.2.2. Gnomoniopsis wuyishanensis T.C. Mu and J.Z. Qiu, sp. nov., Figure 5

MycoBank Number: MB856023

Etymology: The epithet “wuyishanensis” refers to the collection site of the holotype, Wuyi Mountain National Nature Reserve.

Holotype: China: Fujian Province, Wuyi Mountain National Nature Reserve, 27°43′42.05″ N, 117°42′49.13″ E, on diseased leaves of Castanopsis fordii, 30 June 2023, T.C. Mu and Z.A. Heng, holotype HMAS 353149, ex-holotype living culture CGMCC3.27836.

Figure 5.

Figure 5

Gnomoniopsis wuyishanensis (HMAS 353149). (a) Diseased leaves of Castanopsis fordii; (b) surface and reverse sides of colony after 7 days on PDA (c) and 14 days; (d,e) conidiomata; (fk) conidiogenous cells and conidia; and (l,m) conidia. Scale bars: (fm) 10 µm.

Description: Asexual morphs: Conidiomata developed on PDA, pycnidial, solitary, black, creamy conidial droplets exuded from ostioles. Conidiophores are indistinct, frequently reduced to conidiogenous cells. Conidiogenous cells hyaline, smooth, phialidic, clavate, straight to sinuous, attenuate towards apex, 10.8–23.8 × 1.4–2.6 μm, n = 20. Conidia hyaline, smooth, aseptate, oblong to ellipsoid, subcylindrical, 5.1–8.7 × 1.4–3.0 μm, mean = 6.6 ×2.1 μm, L/W ratio = 3.2, n = 30. Sexual morph not observed.

Culture characteristics: Colonies flat with irregular margin, white aerial mycelium then becoming pale gray by age. PDA attaining 36.0–40.7 mm in diameter after 1 week at 25 °C, growth rate 5.1–5.8 mm/day. PDA attaining 77.2–80.1 mm in diameter after 2 weeks at 25 °C, growth rate 5.5–5.7 mm/day.

Other materials examined: China: Fujian Province, Wuyi Mountain National Nature Reserve, 27°43′42.05″ N, 117°42′49.13″ E, on diseased leaves of Castanopsis fordii, 30 June 2023, T.C. Mu and Z.A. Heng, paratype HMAS 353148, ex-paratype living culture CGMCC3.27834.

Notes: Gnomoniopsis wuyishanensis was isolated from diseased leaves of C. fordii from Fujian Province, China. Gnomoniopsis fagacearum (CFCC 54414) was collected from diseased leaves of Castanopsis eyrei from Fujian Province, China, by Jiang et al. [30]. Phylogenetically, Gnomoniopsis wuyishanensis forms a well-supported (83% ML/1 PP, Figure 2) clade that is close, but distinct from Gnomoniopsis guangdongensis, Gnomoniopsis lithocarpi and Gnomoniopsis silvicola [30,36]. Morphologically, the conidia of Gnomoniopsis wuyishanensis are larger than Gnomoniopsis guangdongensis, Gnomoniopsis lithocarpi and Gnomoniopsis silvicola (5.1–8.7 × 1.4–3.0 vs. 4.3–5.2 × 1.4–2.0 vs. 4.0–5.8 × 1.7–2.4 vs. 4.3–5.9 × 1.9–2.7 μm). Therefore, we introduce this taxon as a new species.

3.2.3. Paratubakia schimae T.C. Mu and J.Z. Qiu, sp. nov., Figure 6

MycoBank Number: MB856024

Etymology: The epithet “schimae” refers to the genus of the host plant on which it was collected, Schima.

Holotype: China: Fujian Province, Longyan City, Meihua Mountain National Nature Reserve, 25°39′20.91″ N, 116°55′32.01″ E, on diseased leaves of Schima superba, 14 September 2022, J.H. Chen and C.J. Yang, holotype HMAS 353150, ex-holotype living culture CGMCC3.27842.

Description: Asexual morphs: Conidiomata formed on the surface of PDA medium, pycnothyria grouped together, initially white and apricot, then became black with age. Conidiophores reduced to conidiogenous cells. Conidiogenous cells, hyaline to pale brown, smooth, thin-walled, phialidic, obclavate, 13.0–20.5 × 4.4–5.8 μm, n = 20. Conidia hyaline to slightly pigmented, smooth, solitary, globose to subglobose, with inconspicuous to conspicuous hilum, 10.6–13.7 × 9.4–11.8 μm, mean = 12.1 × 10.5 μm, L/W ratio = 1.2, n = 30. Sexual morph not observed.

Culture characteristics: Colonies flat with regular margin, aerial mycelium white. This species can produce red pigment during growth, which causes the surface and reverse sides of PDA medium to change from colorless to red. PDA attaining 37.7–40.3 mm in diameter after 1 week at 25 °C, growth rate 5.4–5.8 mm/day. PDA attaining 78.7–85.6 mm in diameter after 2 weeks at 25 °C, growth rate 5.6–6.1 mm/day.

Other materials examined: China: Fujian Province, Longyan City, Meihua Mountain National Nature Reserve, 25°39′20.91″ N, 116°55′32.01″ E, on diseased leaves of Schima superba, 14 September 2022, J.H. Chen and C.J. Yang, paratype HMAS 353151, ex-paratype living culture CGMCC3.27855.

Notes: In this study, Paratubakia schimae form a well-supported (96% ML/1 PP, Figure 3) clade that is close to Paratubakia subglobosa within Tubakiaceae trees. However, Paratubakia schimae is distinguished from Paratubakia subglobosa by ITS, tef1, tub2 and rpb2 loci (24/519 in ITS, 38/569 in tef1, 19/498 in tub2 and 20/760 in rpb2) [37]. Morphologically, the conidiogenous cells of Paratubakia schimae are larger than Paratubakia subglobosa (13.0–20.5 × 4.4–5.8 vs. 8.0–12.0 × 2.0–3.0 μm). Therefore, we introduce this fungus as a new species.

Figure 6.

Figure 6

Paratubakia schimae (HMAS 353150). (a) Diseased leaves of Schima superba; (b) surface and reverse sides of colony after 7 days on PDA (c) and 14 days; (d,e) conidiomata; (fj) conidiogenous cells and conidia; and (k,l) conidia. Scale bars: (fl) 10 µm.

4. Discussion

Studies examining fungal diversity on leaves have led to the discovery of a variety of new species and taxa that include pathogens as well as potentially beneficial epi- and endophytes [38,39,40]. Diaporthales Nannf. (phylum Ascomycota) constitutes an important order of phyllosphere fungi [41,42]. Recent advances include the description of a new family, Pyrisporaceae C.M. Tian & N. Jiang, erected based on the type genus Pyrispora C.M. Tian & N. Jiang, with Pyrispora castaneae as the type species, which was collected from leaves of the Chinese chestnut (Castanea mollissima) [43]. Also, Obovoideisporodochium Z. X. Zhang, J. W. Xia & X. G. Zhang was established with the type species Obovoideisporodochium lithocarpi isolated from leaves of Lithocarpus fohaiensis [44]. In a survey of fungi associated with plant leaves in south-western China, eight new species of Diaporthe were identified from tea (Camellia sinensis): Castanea mollissima, Chrysalidocarpus lutescens, Elaeagnus conferta, Elaeagnus pungens, Heliconia metallica, Heterostemma grandiflorum, Litchi chinensis, Machilus pingii, Melastoma malabathricum and Millettia reticulate [35].

The genus Diaporthe Nitschke (syn. Phomopsis (Sacc.) Bubák) belongs to Diaporthaceae Höhn. ex Wehm. (Diaporthales), with Diaporthe eres as the type species [45,46]. Species of Diaporthe include both plant pathogens and endophytes, typically with broad host ranges, as well as saprophytes [47]. Currently, more 1200 epithets of Diaporthe and 983 of Phomopsis have been recorded in the Index Fungorum (http://www.indexfungorum.org/; (accessed 10 September 2024)). Based on five single genetic loci, as well as multigene phylogentic analyses, the genus Diaporthe was re-structured with seven sections proposed: Betulicola, Crotalariae, Eres, Foeniculina, Psoraleae-pinnatae, Rudis and Sojae, with boundaries for 13 species and 15 species complexes [18]. The lengthy phylogenetic trees of the entire Diaporthe and data analysis were avoided, which provides mycologist and taxonomists with the convenience of focusing on specific sections, species complexes and species. Here, a new species, Diaporthe wuyishanensis, is introduced into the Diaporthe virgiliae species complex, based on both morphological differences and multi-locus (ITS, cal, his3, tef1 and tub2) molecular analyses. The Diaporthe virgiliae species complex contains five species, viz. Diaporthe grandiflori, Diaporthe heterophyllae, Diaporthe penetriteum, Diaporthe virgiliae and Diaporthe zaofenghuang, previously [18].

Gnomoniopsis Berl. is a genus in the Gnomoniaceae G. Winter (Diaporthales) with Gnomoniopsis chamaemori as the type species [48]. Gnomoniopsis was originally studied as a subgenus within Gnomonia Ces. & De Not. because of their similar morphology [49]. However, Gnomoniopsis has been separated from Gnomonia by means of morphology, phylogeny and host associations [36,48,49]. As important pathogens of agricultural and forestry trees, flowers and fruit, species of Gnomoniopsis can cause signficant plant damage and resultant economic losses [50,51,52,53]. It is reported that leaf spot diseases of oak (Quercus alba and Quercus rubra) have also been caused by Gnomoniopsis clavulata infection in North America [54], and Gnomoniopsis fragariae is reported to result in leaf blotch disease of strawberry in Europe [52]. Within the past 10–12 years, Gnomoniopsis smithogilvyi has been isolated from diseased chestnut in Spain, Portugal and Greece, which are important chestnut-producing countries in Europe [55,56]. Gnomoniopsis castaneae infection damages the fruit of chestnuts and can cause cankers and necrosis on leaves. Cankers have also been reported on chestnut wood, red oak and hazelnut trees and are currently considered major threats to global chestnut production, potentially threatening the reintroduction of American chestnut, as the fungus has been found in North America [57].

With respect to host plants, Gnomoniopsis appears to mainly inhabit three plant families, viz. Rosaceae, Fagaceae and Onagraceae [49,58]. This is reflected in phylogram plant host analyses, in which Gnomoniopsis divides into three clades: Rosaceousclade, Fagaceousclade and Onagraceousclade, with most species currently assigned within the former two clades. Species of Gnomoniopsis have host-specific features in each clade, although the molecular basis for this specificity remains unknown. The new species we report, Gnomoniopsis wuyishanensis, fits within the Fagaceous clade. These characterizations and placements allow for surveillance of potential outbreaks in relevant hosts.

The genus Paratubakia U. Braun & C. Nakash. belongs to Tubakiaceae U. Braun, J.Z. Groenew. & Crous (Diaporthales) with Paratubakia subglobosa as the type species [37]. Based on morphological and phylogenetic analyses, Phaeotubakia (type species: Phaeotubakia lithocarpicola) has more recently been proposed. Based on a multigene phylogeny (LSU and rpb2), Paratubakia subglobosa and Paratubakia subglobosoides have been shown to form an independent branch of Tubakiaceae. Currently, Paratubakia includes only two species: Paratubakia subglobosa and Paratubakia subglobosoides. Tubakiaceae has been proposed to accommodate the genera Apiognomonioides, Involutscutellula, Oblongisporothyrium, Paratubakia, Racheliella, Saprothyrium, Sphaerosporithyrium and Tubakia based on LSU sequence alignment and type genus Tubakia [37]. Subsequently, Obovoideisporodochium was established based on the type species Obovoideisporodochium lithocarpi [44], and Ellipsoidisporodochium was erected based on the type species Ellipsoidisporodochium photiniae [59]. Both Obovoideisporodochium lithocarpi and Phaeotubakia lithocarpicola and most Tubakiaceae species were found from Fagaceae plants [60]. Species of Paratubakia were only found and described from the Japanese blue oak (Quercus glauca) [37]. Here, we report on a new species Paratubakia schimae, with, to the best of our knowledge, the genus found and described in China for the first time. As this is the first description of Paratubakia in China, its distribution and potential host range remain unknown. However, our data suggest significant likelihood for additional discovery.

5. Conclusions

In this study, based on morphological features and multigene phylogenetic analyses, we described three new species of Diaporthales distributed within three different genera from China, viz. Diaporthe wuyishanensis, Gnomoniopsis wuyishanensis and Paratubakia schimae. These studies reveal a high diversity of phyllosphere fungi and help plant pathologists, taxonomists and phytologists to improve understanding of plant–fungal interactions.

Acknowledgments

We are deeply indebted to Weibin Zhang, Jinhui Chen, Chenjie Yang and Sen Liu, who helped us with collecting samples, taking pictures and providing us with multigene sequence data of some new species.

Author Contributions

Conceptualization, X.G., T.M. and J.Q.; methodology, J.S.; software, Y.M.; validation, J.Y., M.Z. (Mengjia Zhu) and L.Y.; formal analysis, H.P. and Y.L.; investigation, M.Z. (Minhai Zheng); resources, H.L. (Huajun Lv) and Z.H.; data curation, X.G., T.M., J.S., Y.M., J.Y., M.Z. (Minhai Zheng), L.Y., H.P., Y.L., Z.H., H.L. (Huiling Liang), L.F., X.M., H.M. and Z.Q.; writing—original draft preparation, X.G. and T.M.; writing—review and editing, J.Q. and N.O.K.; visualization, Z.Q. and T.M.; supervision, X.G. and J.Q.; project administration, Z.Q. and J.Q.; funding acquisition, X.G. and J.Q. All authors have read and agreed to the published version of the manuscript.

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

All sequences generated in this study were submitted to the NCBI database.

Conflicts of Interest

The authors declare no conflicts of interest.

Funding Statement

This research was funded by the National Natural Science Foundation of China (No. 32270029, U1803232, 31670026), the National Key R & D Program of China (No. 2017YFE0122000), a Social Service Team Support Program Project (No. 11899170165), Science and Technology Innovation Special Fund (Nos. KFB23084, CXZX2019059S, CXZX2019060G) of Fujian Agriculture and Forestry University, a Fujian Provincial Major Science and Technology Project (No. 2022NZ029017), an Investigation and evaluation of biodiversity in the Jiulong River Basin (No. 082·23259-15), Macrofungal and microbial resource investigation project in Longqishan Nature Reserve (No. SMLH2024 (TP)-JL003#) and an Investigation of macrofungal diversity in Junzifeng National Nature Reserve, Fujian Province (No. Min QianyuSanming Recruitment 2024-23).

Footnotes

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Associated Data

This section collects any data citations, data availability statements, or supplementary materials included in this article.

Data Availability Statement

All sequences generated in this study were submitted to the NCBI database.


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