Diversity and evolution of Plagioselmis-clade (Cryptophyceae)

许多菌株可被鉴定为斜纹石斑菌。和Teleaulax sp.的形态特征。因为这些菌株的rDNA序列(包括ITS)几乎完全相同，并且与Teleaulax sp.仅有1种具有生活周期的斜纹藻分支由斜纹藻组成。Stage和Teleaulax sp.这一阶段在日本沿海水域很常见。此外，系统发育分析表明，绞股蓝科属(包括斜生属支系)是隐孢菌科的祖先类群。这一发现为研究隐孢子虫的进化提供了各种见解。

Many strains that could be identified as Plagioselmis sp. and Teleaulax sp.based on morphological characters were isolated from various coastal waters of Japan. Because rDNA sequences including ITS of these strains were nearly identical and the cells of a strain of Teleaulax sp. transferred to those of Plagioselmis sp., only one species of Plagioselmis-clade that possessed life cycle composed of Plagioselmis sp. stage and Teleaulax sp. stage was common in Japanese coastal waters. In addition, the phylogenetic analysis suggested that the family Geminigeraceae (including Plagioselmis-clade) was ancestral paraphyletic group in the Cryptophyceae. This finding provided various insights to consider the evolution of the Cryptophyceae.