Table 1. List of putative Low silicon influx (Lsi1) and efflux (Lsi2) channels identified in silico in the pepper genome and their homologs in potato, tomato, Arabidopsis, maize, rice and sorghum.
| Gene name* | Gene locus | GenBank/UniProtKB accession | Protein length (aa) | Molecular mass (kDa) | cDNA/EST/mRNA |
|---|---|---|---|---|---|
| CaLsi1.1 | XP_016559617.1 | XM_016704131.1/A0A2G3A7U2 | 274 | 28.95 | LOC107859207 |
| CaLsi1.2 | XP_016570571.1 | XM_016715085.1/A0A1U8GGZ8 | 284 | 30.17 | LOC107868397 |
| CaLsi1.3 | PHT61911 | PHT61911.1/A0A2G2XX71 | 283 | 30.11 | T459_34224 |
| CaLsi1.4 | XP_016556948.1 | XM_016701462.1/A0A1U8FKV2 | 251 | 26.92 | LOC107856450 |
| CaLsi1.5 | XP_016556947.1 | XM_016701461.1/A0A1U8FC86 | 271 | 29.06 | LOC107856450 |
| CaLsi1.6 | PHT88450.1 | PHT88450.1/A0A2G3A2M0 | 305 | 31.37 | T459_10556 |
| CaLsi1.7 | XP_016562905.1 | XM_016707419.1/A0A1U8FVN4 | 305 | 31.43 | LOC107861995 |
| CaLsi1.8 | PHT79955.1 | PHT79955.1/A0A2G2ZDK0 | 290 | 31.63 | T459_18007 |
| CaLsi1.9 | XP_016561864.1 | XM_016706378.1/A0A1U8G1K6 | 280 | 29.76 | LOC107860944 |
| CaLsi1.10 | XP_016556163.1 | XM_016700677/A0A2G3APC1 | 297 | 30.92 | LOC107855657 |
| CaLsi1.11 | XP_016576910.1 | XM_016721424.1/A0A1U8H0K7 | 344 | 37.35 | LOC107874665 |
| CaLsi1.12 | XP_016560837.1 | XM_016705351.1/A0A2G3AAT2 | 264 | 28.07 | LOC107860109 |
| CaLsi1.13 | PHT88955.1 | PHT88955.1/A0A2G3A3Z3 | 295 | 31.48 | T459_04068 |
| CaLsi1.14 | PHT67190.1 | PHT67190.1/A0A2G2YBT3 | 191 | 20.57 | T459_26677 |
| CaLsi1.15 | PHT90298.1 | PHT90298.1/A0A2G3A7W5 | 246 | 26.44 | T459_05411 |
| CaLsi1.16 | XP_016558304.1 | XM_016702818.1/A0A1U8FRD1 | 307 | 33.07 | LOC107858088 |
| StNIP1.2 | XP_006356091.1 | XM_006356029.2/M1CNX1 | 277 | 29.65 | LOC102581997 |
| StNIP1.3 | XP_006344325.1 | XM_006344263.1/M1CZX0 | 272 | 29.26 | LOC102585910 |
| StNIP6.1 | XP_006341363.1 | XM_006341301.2/M1B3X8 | 306 | 31.68 | LOC102599870 |
| StNIP5.1 | NP_001274996.1 | NM_001288067.1/H9BZ83 | 296 | 30.67 | NM_001288067.1 |
| SlNIP1.1 | XP_004234073.1 | XM_004234025.4/A0A3Q7FD37 | 277 | 29.65 | LOC101246598 |
| SlNIP1x2 | XP_010320707.2 | XM_010322405.3 | 272 | 29.28 | LOC101252874 |
| SlNIP6.1 | NP_001289852.1 | NM_001302923.1/V5YMM2 | 306 | 31.71 | LOC101243873 |
| SlNIP5.1 | NP_001274288.1 | NM_001287359.2/K4CJ08 | 295 | 30.63 | LOC101244210 |
| AtUPP | CAA0344932.1 | CACSHJ010000087.1/A0A5S9WW53 | 305 | 31.91 | C24_LOCUS7011 |
| AtNOD26.6 | NP_178191.1 | NM_106724.3/Q9SAI4 | 305 | 31.84 | AT1G80760 |
| AtNOD26.5 | NP_192776.1 | NM_117106.3/Q9SV84 | 304 | 31.49 | AT4G10380 |
| ZmUPP | ACN36318.1 | BT069421.1/C0PMA2 | 302 | 31.14 | BT069421.1 |
| ZmNIP3.1 | NP_001105021.1 | NM_001111551.1/Q9ATN1 | 302 | 31.16 | LOC541885 |
| OsNIP3.1 | XP_015614995.1 | XM_015759509.2/Q0IWF3 | 311 | 31.84 | LOC4349102 |
| OsHYP1 | KAB8113302.1 | CM012950.1 | 311 | 31.89 | EE612_052268 |
| OsHYP2 | EAZ16668.1 | CM000147.1/Q0IWF3 | 309 | 31.84 | OsJ_32143 |
| OsNOD26.3 | BAO01152.1 | AB856414.1/U3U951 | 309 | 31.58 | AB856414.1 |
| SbNIP1.1 | XP_002453573.1 | XM_002453528.2/C5XYL0 | 287 | 30.19 | LOC8073813 |
| SbNIP1.2 | XP_002454982.2 | XM_002454937.2/A0A1B6Q107 | 282 | 29.26 | LOC8080506 |
| SbNIP1.3 | XP_002440774.1 | XM_002440729.2/C5YUM4 | 283 | 29.49 | LOC8055735 |
| CaLsi2.1a | XP_016564559.1 | PHT87291.1/XM_016709074.1 | 532 | 57.8 | LOC107863243 |
| CaLsi2.1b | XP_016564559.1 | XM_016709073.1/A0A1U8G953 | 532 | 57.8 | LOC107863243 |
| CaLsi2.3 | XP_016564560.1 | XP_016564560.1 | 491 | 52.9 | LOC107863243 |
| StARSBx1 | XP_006363328.1 | XM_006363266.2/M1CXN0 | 533 | 57.91 | LOC102599999 |
| StARSBx2 | XP_015158879.1 | XM_015303393.1 | 452 | 49.45 | LOC102599999 |
| SlLsi2 | XP_010317628.1 | XM_010319326.3/A0A3Q7FEL4 | 516 | 56.3 | LOC101259123 |
| SlLsi2x1 | XP_004240725.1 | XM_004240677.4/A0A3Q7GUH1 | 528 | 57.33 | LOC101263323 |
| SlLsi2x3 | XP_025887220.1 | XM_026031435.1 | 465 | 50.98 | LOC101263323 |
| SlLsi2x2 | XP_025887219.1 | XM_026031434.1 | 466 | 51.11 | LOC101263323 |
| AtUPP1 | CAA0156383.1 | CACSHJ010000087.1 | 502 | 54.65 | C24_LOCUS167 |
| AtUPP2 | VYS44749.1 | CACRSJ010000104.1/A0A654E638 | 499 | 54.48 | AN1_LOCUS259 |
| AtDIS | NP_001320653.1 | NM_001331329.1/A0A384KQY8 | 502 | 54.72 | AT1G02260 |
| ZmUP1 | NP_001151517.1 | NM_001158045.1/B6U1B5 | 556 | 60.20 | LOC100285151 |
| ZmCTFP1 | ACG43196.1 | EU971078.1/B6U1G3 | 556 | 60.21 | EU971078.1 |
| ZmUP2 | NP_001147885.1 | NM_001154413.2/B6SSI8 | 574 | 61.39 | LOC100281495 |
| ZmARSB1 | PWZ55837.1 | NCVQ01000001.1/A0A317YAZ4 | 574 | 61.41 | Zm00014a_001976 |
| ZmUP3 | XP_008679680.1 | XM_008681458.2/B8A307 | 535 | 58.04 | XM_008681458 |
| ZmCTFP2 | ACG28034.1 | EU955916.1/B6ST51 | 575 | 61.46 | EU955916.1 |
| ZmARSB2 | PWZ22675.1 | NCVQ01000006.1/A0A3L6ENZ5 | 550 | 59.09 | Zm00014a_004231 |
| ZmLsi2x2 | XP_008644817.1 | XM_008646595.3/A0A1D6GPX1 | 550 | 59.11 | LOC103626193 |
| ZmLsi2x1 | XP_008644816.1 | XM_008646594.2 | 653 | 70.77 | LOC103626193 |
| ZmARSB3 | PWZ25127.1 | NCVQ01000005.1/A0A3L6F0E9 | 527 | 56.19 | Zm00014a_028813 |
| ZmATSB | NP_001148124.1 | NM_001154652.2/B6SY85 | 527 | 56.23 | LOC100281732 |
| OsLsi2x1 | XP_015630657.1 | XM_015775171.2/Q10RS7 | 557 | 60.24 | LOC4331617 |
| OsLsi2x2 | XP_015630663.1 | XM_015775177.2/Q10RS6 | 527 | 57.11 | LOC4331617 |
| OsLsi2.2 | XP_015614851.1 | XM_015759365.2/A0A0P0XUU1 | 567 | 61.36 | LOC4348760 |
| OsLsi2.3 | XP_015626922.1 | XM_015771436.2/Q6K6Z6 | 530 | 56.78 | LOC4331184 |
| OsHYP3 | KAB8089565.1 | CM012942.1 | 530 | 56.8 | EE612_014533 |
| OsHYP4 | EEC74268.1 | CM000127.1/B8AF47 | 485 | 51.78 | OsI_09493 |
| SbARSB1x1 | XP_021307248.1 | XM_021451573.1 | 556 | 60.24 | LOC110431862 |
| SbARSB1 | XP_021306519.1 | XM_021450844.1 | 564 | 60.84 | LOC8071382 |
| SbARSB1x2 | XP_021307254.1 | XM_021451579.1 | 535 | 58.07 | LOC110431862 |
| SbARSB2 | XP_002453063.1 | XM_002453018.2/C5XW09 | 494 | 52.83 | LOC8059699 |
Note:
Data were retrieved from NCBI and UniProtKB. *For each Lsi gene name, we considered the scientific name of pepper: Capsicum annuum (Ca); potato: Solanum tuberosum (St); tomato: Solanum lycopersicum (Sl); Arabidopsis: Arabidopsis thaliana (At); maize: Zea mays (Zm); rice: Oryza sativa (Os); and sorghum: Sorghum bicolor (Sb). *The meaning of the acronym for Lsi homologous proteins is as follows: Nodulin 26-like Intrinsic Protein (NIP), Unnamed Product Protein (UPP), Nucleotide Oligomerization Domain (NOD), Hypothetical Protein (HYP), Arsenical Pump Membrane Protein (ARSB), Divalent Ion Symporter (DIS), Uncharacterized Protein (UP), Citrate Transporter Family Protein (CTFP), Arsenite Transport Subunit B (ATSB). This table presents the Lsi1 channels with the highest homology to strawberry FaNIP2-1 and FaLsi2 proteins previously reported (Ouellette et al., 2017) and their homologs. The complete list of putative Lsi and Lsi2 channels is included as File SF1.