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Phylogenetic Analysis of the Tetrasporalean Genus Asterococcus (Chlorophyceae) Based on 18S Ribosomal RNA Gene Sequences

机译:基于18S核糖体RNA基因序列的Tetrasalean Genus(叶绿素)的系统发育分析

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摘要

Nucleotide sequences (1642 bp) from 18S ribosomal RNA genes were analyzed for 100 strains of the clockwise (CW) group of Chlorophyceae to deduce the phylogenetic position of the immotile colonial genus Asterococcus Scherffel, which is classified in the Palmellopsidaceae of Tetrasporales. We found that the genus Asterococcus and two unicellular, volvocalean genera, Lobochlamys Proschold & al. and Oogamochlamys Proschold & al., formed a robust monophyletic group, which was separated from two tetrasporalean clades, one composed of Tetraspora Link and Paulschulzia Skuja and the other containing the other palmellopsidacean genus Chlamydocapsa Fott. Therefore, the Tetrasporales in the CW group is clearly polyphyletic and taxonomic revision of the order and the Palmellopsidaceae is needed.
机译:分析来自18S核糖体RNA基因的核苷酸序列(1642bp)的顺时针(CW)叶绿素组的100株,以推导出Imsterocococcus scherffel的系统发育位置,其在四俄罗斯的棕榈树脂群中分类。 我们发现,Asterococcus属和两个单细胞,Volvocalean属,Lobomys Proschold&Al。 和oogamochamys proschold&al。形成了一种鲁棒的单胞小组,其与两种四俄罗斯植物分离,其中一个由四孢子链接和Paulschulzia skuja组成,另一个含有其他palmelperopsidacean属的衣原体衣原体。 因此,CW组中的四孢子显然是对顺序的复发和分类修订,并且需要掌声。

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