Molecular phylogenetic relaionships of unicellular green algae, Chlorellales and its relaives.

单细胞绿藻、小球藻及其近缘植物的分子系统发育关系。

基本信息

批准号：
07640925
负责人：
WATANABE Shin
金额：
$ 1.41万
依托单位：
Toyama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

项目摘要

18SrDNA sequece data of 33 species of unicellular green algae, indluding the Chlorellales (sensu Bold & Wynne 1978) (12 species), Chlamydomonadales (3), Tetrasporales (2), Chlorococcales (6), Chlorosarcinales (8), Chaetophorales (1) and Chaetopeltidales (1), were analyzed phylogenetically.1) The Chlorellales is polyphyletic, and the algae of this order distribute in the chlorophycean and trebouxiophycean clades. Number of species of the latter clade is more than the former.2) Biflagellate members whose basal body orientation is clockwise are divided in the Tetracystis-, Dunaliella-, and Volvox-clade. Tetrad formers of the Chlorosarcinales are included in the Tetracystis-clade, being separated from sarcinoid formers of the order. Difference between Dunaliella-clade and Volvox-clade may be caused by their naked and thin-walled swarmers respectively.3) From analysis of quadriflagellate wall-less green algae, it was concluded that the cell wall occurred several times in separate phylogenetic lines, and we proposed a new order Oltomannsiellopsidales.4) A marine chlorococcalean species of the genus Neochloris is obviously a ulotrichalean alga of the Ulvophyceae, and we proposed Pseudoneochloris marina gen.et sp.nov.5) For a marine chlorosarcinale an species of the genus Chlorosarcinopsis, we proposed to establish a new genus in the Ulotrichales, Ulvophyceae.6) Palmophyllum, a species of the Tetrasporales with gelatinous matrix around cells living on rocks in bottom of sea water, is demonstrated to be most related with Prasinophytes.

18srDNA序列数据的33种单细胞绿藻类，引起了叶绿体（Sensu Bold＆Wynne 1978）（12种）（12种），衣原体（3）（3），四孢子虫（2），叶绿体（6），氯氯菌（6），氯康卡内斯（Chailosarcinales）（8），chaetoples（1）（1）（1）（1）（1）（1）（1）。从系统发育中进行分析。1）氯elle虫是多形的，该顺序的藻类分布在叶绿素和trebouxiophiphecean枝中。后一个进化枝的物种数量比前者多。2）双叶酸酯成员的基础体向取向顺时针方向在四环体，dunaliella-和volvox-clade中划分。叶绿素的四四形形成者包括在四环叶片中，与骨的肌动型形成者分离。 Difference between Dunaliella-clade and Volvox-clade may be caused by their naked and thin-walled swarmers respectively.3) From analysis of quadriflagellate wall-less green algae, it was concluded that the cell wall occurred several times in separate phylogenetic lines, and we proposed a new order Oltomannsiellopsidales.4) A marine chlorococcalean species of the genus Neochloris is显然，乌尔多菌科的一个紫石藻类，我们提出了伪氯甲虫gen.et sp.nov.5），用于海洋叶绿体叶绿素的一种种类，我们建议在乌洛特里奇属，乌尔沃菲氏菌，ulvophyceae.6）Palliriptriist pmarthiririst of asspor Mateririist aspor Mateririist asspor Materirist，As as as as as as as as assermophylys，As as as as as as as as as as as as ass of assermothyl。证明生活在海水底部的岩石上的细胞周围与乳脂质最相关。