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Phylogenetic studies on two strains of Antarctic ice algae based on morphological and molecular characteristics

机译:基于形态和分子特征的两种南极冰藻菌株的系统发育研究

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摘要

The taxonomic characterization of two strains of Antarctic ice algae, Chlamydomonas sp. ICE-L and Chlamydomonas sp. ICE-W, were analyzed on the basis of morphological and molecular traits. The results indicate that they are the same species and belong to Chlamydomonas (Chlorophyta). According to 18S rDNA and ITS-1 sequences they are very close relatives of Chlamydomonas sp. Antarctic 2E9, if not ide.gified as such. They belong to the ‘monadina clade’, Cd. monadina and Cm. subdivisa as the sister group, on the basis of 18S rDNA sequence. They occur in ‘Chlamydomonas clade’ according to rbcL sequencing and are close relatives of Cd. kuwadae. The ITS sequences of ICE-L and ICE-W are 1302 base pairs and 1300 base pairs in length, the longest Volvocales ITS sequences ever reported.
机译:两株南极冰藻衣藻的分类学表征。 ICE-L和衣藻(Chlamydomonas sp。)根据形态和分子特征对ICE-W进行了分析。结果表明,它们是相同的物种,属于衣藻(Chlorydomonas,Chlorophyta)。根据18S rDNA和ITS-1序列,它们是衣藻的非常近缘。南极2E9(如果未完全识别)。它们属于“ monadina clade”,Cd。 monadina和Cm。以18S rDNA序列为基础,细分为姐妹组。根据rbcL测序,它们出现在“衣藻”进化枝中,并且是Cd的近亲。桑田ICE-L和ICE-W的ITS序列长度为1302个碱基对,长度为1300个碱基对,是有史以来最长的Volvocales ITS序列。

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