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首页> 外文期刊>Journal of Plant Research >Detection and characterization of phosphatidylcholine in various strains of the genus Chlamydomonas (Volvocales, Chlorophyceae)
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Detection and characterization of phosphatidylcholine in various strains of the genus Chlamydomonas (Volvocales, Chlorophyceae)

机译：衣藻属（Volvocales，Chlorophyceae）各种菌株中磷脂酰胆碱的检测和鉴定

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摘要

The laboratory strains of Chlamydomonas reinhardtii have been reported to contain no phosphatidylcholine (PC), which is considered to be replaced by another zwitterionic lipid, diacylglyceryl-N,N,N-trimethylhomoserine (DGTS). According to the recently published classification, the strains belonged to the subgroup Reinhardtinia. Screening for PC in 13 selected strains of Chlamydomonas in the NIES Algal Collection, which are different in habitats and belong to different phylogenetic subgroups in the genus, revealed the presence of PC in four strains: a strain in the subgroup Polytominia, and three strains in Reinhardtinia. PC was not detected in three other strains of Reinhardtinia analyzed. The presence/absence of PC was not related to the phylogenetic relationship based on 18S rRNA. DGTS was detected in all the strains analyzed. The rare isomer of linolenic acid, 18:3(5,9,12), which has been found in the DGTS of C. reinhardtii, was found in the PC of the two strains and in the DGTS of the five strains. The occurrence of this fatty acid seems limited to a branch of Reinhardtinia. Acquisition and loss of PC in various strains of Chlamydomonas are discussed from the viewpoint of evolution of PC biosynthetic pathway.
机译：据报道，莱茵衣藻的实验室菌株不含磷脂酰胆碱（PC），被认为已被另一种两性离子脂质，二酰基甘油基-N，N，N-三甲基高丝氨酸（DGTS）替代。根据最近公布的分类，菌株属于莱茵菌亚群。在NIES藻类收藏中的13个选定的衣藻衣藻菌株中筛选PC，这些菌株在生境中不同并且属于该属的不同系统发育亚组，揭示了PC在以下4种菌株中的存在：一个是多毛菌亚组的菌株，另外3个是Reinhardtinia。在分析的另外三株雷氏菌中未检测到PC。 PC的存在与否与基于18S rRNA的系统发育关系无关。在所有分析菌株中均检测到DGTS。在两个菌株的PC和五个菌株的DGTS中发现了赖氨酸梭菌的DGTS中发现的稀有亚麻酸18：3（5,9,12）异构体。这种脂肪酸的出现似乎仅限于雷氏菌属的一个分支。从PC生物合成途径的演变的角度探讨了衣藻中各种菌株的PC获取和损失。

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