| RRC ID |
39744
|
| 著者 |
Munakata H, Nakada T, Nakahigashi K, Nozaki H, Tomita M.
|
| タイトル |
Phylogenetic Position and Molecular Chronology of a Colonial Green Flagellate, Stephanosphaera pluvialis (Volvocales, Chlorophyceae), among Unicellular Algae.
|
| ジャーナル |
J Eukaryot Microbiol
|
| Abstract |
The genus Balticola comprises a group of unicellular green flagellate algae and is composed of four species formerly classified in the genus Haematococcus. Balticola is closely related to a colonial green flagellate, Stephanosphaera pluvialis. Although the phylogeny among these genera was previously investigated based on two nuclear gene sequences, the phylogenetic sister of S. pluvialis has yet to be determined. In the present study, the species diversity of Balticola and Stephanosphaera was investigated using 18S rRNA gene sequences, and phylogenetic analyses of combined nuclear and chloroplast gene sequences were performed to understand the evolutionary origin of coloniality in Stephanosphaera. The divergence times of four colonial volvocalean flagellates from their respective unicellular sisters were also estimated. Six Balticola genotypes and a single Stephanosphaera genotype were recognized, and one Balticola genotype was resolved as the sister of S. pluvialis, showing that Balticola is a nonmonophyletic genus. The divergence time of Stephanosphaera from its nearest Balticola relative was estimated to be 4-63 million years ago, and these genera represent the most recently diverged pair of unicellular and colonial flagellates among the Volvocales.
|
| 巻・号 |
63(3)
|
| ページ |
340-8
|
| 公開日 |
2016-5-1
|
| DOI |
10.1111/jeu.12283
|
| PMID |
26595722
|
| MeSH |
DNA, Chloroplast / genetics
DNA, Ribosomal / genetics
Evolution, Molecular
Genetic Variation
Genotype
Phylogeny
Ribulose-Bisphosphate Carboxylase / genetics
Volvocida / classification*
Volvocida / genetics*
|
| IF |
2.143
|
| 引用数 |
7
|
|
WOS 分野
|
MICROBIOLOGY
|
| リソース情報 |
| 藻類 |
NIES-123
NIES-144
NIES-421
NIES-428
NIES-432
NIES-439
NIES-446
NIES-567
NIES-569
NIES-571
NIES-656
NIES-861
NIES-968
NIES-1048
NIES-2293
NIES-2564
NIES-887 |
