Taxonomy of Nephroselmis viridis sp. nov. (Nephroselmidophyceae, Chlorophyta), a sister marine species to freshwater N. olivacea
Taxonomy of Nephroselmis viridis sp. nov. (Nephroselmidophyceae, Chlorophyta), a sister marine species to freshwater N. olivacea
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DOI：
10.1007/s10265-010-0349-y
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发表时间：
2011-01-01
影响因子：
2.8
通讯作者：
Inouye, Isao
中科院分区：
文献类型：
--
作者：
Yamaguchi, Haruyo;Suda, Shoichiro;Inouye, Isao
肾形藻属（Nephroselmidophyceae）是一种原始的绿色鞭毛虫，曾被归入Prasinophyceae，对我们理解绿色植物的早期进化具有重要意义。本文报道了从日本、斐济和南非分离的一个新种--肾蕨属（Nephroselmis）。本种在很长一段时间内被认为是未描述的种。绿色的不viridis具有淡水型N.橄榄形，包括在核状和双极多刺的身体鳞片下的盘状结构，具有1-5-8-5-1刺。基于18 S rDNA的分子系统发育分析也支持N. viridis和N.橄榄类然而，N. viridis与N.根据其淀粉鞘的形状、鳞片、色素成分和生境，可将其分类为橄榄科植物。在本文中，我们指定的形式描述N。我们还描述了不同的N. viridis sp. nov. viridis菌株。本文对N. viridis提供了一些关于Nephroselmis进化的见解。
The genus Nephroselmis (Nephroselmidophyceae), which had been placed in the Prasinophyceae, is one of the primitive green flagellates that are important to our understanding of the early evolution of green plants. We studied a new species of Nephroselmis isolated from Japan, Fiji and South Africa. This species has been known for a long time as undescribed species 'N. viridis.' N. viridis possesses some ultrastructural characters shared with only the freshwater type species N. olivacea, including a disc-like structure beneath the pyrenoid and bipolar spiny body scales with 1-5-8-5-1 spines. Molecular phylogenetic analysis based on 18S rDNA also supports a sister relationship between N. viridis and N. olivacea. However, N. viridis is distinguishable from N. olivacea by the shape of its starch sheath, its scales, its pigment composition and its habitat. In this paper, we designate the formal description of N. viridis sp. nov. We also describe variability in the 18S rDNA introns of various N. viridis strains. This detailed study of N. viridis provides some insights into the evolution of Nephroselmis.