Nikulin Vyacheslav Yu, Nikulin Arthur Yu, Gontcharov Andrey A, Bagmet Veronika B, Abdullin Shamil R
Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, 159, 100-Letia Vladivostoka Prospect, Vladivostok 690022, Russia.
Plants (Basel). 2023 Sep 22;12(19):3350. doi: 10.3390/plants12193350.
A strain of oogamous biflagellate green alga was isolated during a study on soil algal diversity in the Russian Far East (Sakhalin Region, Iturup Island) and examined using an integrative approach. Phylogenetic analyses, based on the SSU rDNA gene, resolved the new strain as a part of the RL clade ( Watanabe and Nakada) within Oogamochlamydinia (Volvocales, Chlorophyceae). The strain was similar to members of the genus (parietal and massive cup-shaped chloroplasts; two apical contractile vacuoles), but was, however, distinguished from them based on the size and shape of the mature vegetative cells, the flagellar length, the presence of only one pyrenoid in both the mature vegetative cells and the zoospores, the anterior nucleus position, and the spermatozoids' shape. Although a concept of the genus has been compromised in recent phylogenetic analysis based on the SSU rDNA sequence data and its likely affinity to anisogamous , we described the strain from Iturup Island as sp. nov.
在对俄罗斯远东地区（萨哈林州，伊图鲁普岛）土壤藻类多样性的研究中，分离出了一种卵式生殖的双鞭毛绿藻菌株，并采用综合方法对其进行了研究。基于小亚基核糖体DNA（SSU rDNA）基因的系统发育分析，将该新菌株确定为卵式衣藻纲（团藻目绿藻纲）中RL分支（渡边和中田）的一部分。该菌株与 属的成员相似（具壁状和块状杯形叶绿体；两个顶端收缩液泡），但在成熟营养细胞的大小和形状、鞭毛长度、成熟营养细胞和游动孢子中仅存在一个蛋白核、细胞核位于前端以及精子形状等方面与它们有所不同。尽管基于SSU rDNA序列数据的近期系统发育分析对 属的概念提出了质疑，且其可能与异配生殖的 有亲缘关系，但我们仍将伊图鲁普岛的该菌株描述为新种 。
