Table 1.
General features of the streptophyte green algal chloroplast genomes compared in this study.
| Taxon | Accession no.a | Size (bp) |
G+C (%) | Genes |
Introns (no.) |
Repeatsb (%) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | IR | LSC | SSC | No.c | % genomed | Group I | Group IIe | ||||
| Mesostigmatophyceae | |||||||||||
| Mesostigma viride NIES 296 | NC_002186 | 118,360 | 6,057 | 83,627 | 22,619 | 30.1 | 137 | 73.2 | 0.2 | ||
| Chlorokybophyceae | |||||||||||
| Chlorokybus atmophyticus SAG 48.80 | NC_008822 | 152,254 | 7,640 | 109,098 | 27,876 | 38.2 | 138 | 58.8 | 1 | 0.5 | |
| Klebsormidiophyceae | |||||||||||
| Klebsormidium sp. SAG 51.86f | KU646497∗ | >130,962g | 40.6 | 112 | 67.7 | 12 (2) | 0 | ||||
| Klebsormidium flaccidum SAG 121.8 | NC_024167 | 176,832 | 51,118 | 72,779 | 1,817 | 42.0 | 114 | 76.3 | 12 (2) | 0.2 | |
| Entransia fimbriata UTEX LB 2353 | KU646490∗ | 206,025 | 60,590 | 75,629 | 9,216 | 33.0 | 118 | 64.4 | 1 | 10 (1) | 0.4 |
| Charophyceae | |||||||||||
| Chara vulgaris | NC_008097 | 184,933 | 10,919 | 135,815 | 27,280 | 26.2 | 127 | 60.9 | 2 | 16 (1) | 1.6 |
| Coleochaetophyceae | |||||||||||
| Chaetosphaeridium globosum M1311 | NC_004115 | 131,183 | 12,431 | 88,682 | 17,639 | 29.6 | 125 | 76.9 | 1 | 17 (1) | 0.7 |
| Coleochaete scutata SAG 110.80M | KU646493∗ | 107,236 | 27.6 | 117 | 79.9 | 1 | 14 (0) | 0.6 | |||
| Zygnematophyceae | |||||||||||
| Mesotaenium endlicherianum SAG 12.97 | NC_024169 | 142,017 | 42.2 | 124 | 68.4 | 1 | 16 (1) | 0.6 | |||
| Zygnema circumcarinatum SAG 698-1a | NC_008117 | 165,372 | 31.1 | 125 | 57.8 | 1 | 12 (1) | 1.2 | |||
| Cylindrocystis brebissonii SAG 615-1 | KU646495∗ | 136,938 | 29.8 | 122 | 63.8 | 1 | 9 (1) | 1.5 | |||
| Spirogyra maxima UTEX LB 2495 | KU646489∗ | 129,954 | 30.1 | 124 | 73.3 | 1 | 16 (1) | 1.0 | |||
| Netrium digitus UTEX LB 561 | KU646491∗ | 131,804 | 31.4 | 125 | 74.5 | 1 | 13 (1) | 0.5 | |||
| Roya anglica ACOI 799 | NC_024168 | 138,275 | 12,568 | 92,926 | 20,213 | 33.1 | 122 | 69.7 | 1 | 9 (1) | 0.1 |
| Roya obtusa SAG 168.80 | KU646496∗ | 138,272 | 12,568 | 92,924 | 20,212 | 33.1 | 122 | 69.9 | 1 | 9 (1) | 0.1 |
| Closterium baillyanum SAG 50.89 | KU646494∗ | 201,341 | 26,784 | 120,746 | 27,027 | 39.3 | 124 | 53.1 | 4 | 15 (1) | 4.9 |
| Cosmarium botrytis UTEX 175 | KU646492∗ | 207,850 | 24,465 | 132,863 | 26,057 | 39.8 | 122 | 47.9 | 1 | 6 (1) | 6.0 |
| Staurastrum punctulatum SAG 679-1 | NC_008116 | 157,089 | 32.5 | 122h | 58.4 | 1 | 7 (1) | 0.3 | |||
aThe asterisks denote the nine genomes described here for the first time. bNon-overlapping repeat elements were mapped on each genome with RepeatMasker using the repeats ≥ 30 bp identified with REPuter as input sequences. cOnly standard genes conserved in green plant chloroplast genomes are included in these values. Duplicated genes were counted only once. dThese values include the sequences of standard genes and ORFs coding for proteins of known functions. eThe first value provides the total number of group II introns; the number of trans-spliced introns is given in parentheses. fThis species was formally called Microspora stagnorum (Mikhailyuk et al., 2008). gThe exact size of the Klebsormidium sp. SAG 51.86 genome could not be determined because the IR/SSC junction was not identified. The features of this genome were estimated from the partial sequence. hThis value includes the trnS(cga) pseudogene found in the Staurastrum genome (Turmel et al., 2005).