我国海南省东南部台湾那屿藻的形态观察及系统发育分析

那屿藻属(新拟名)Yonagunia Kawaguchi et Masuda隶属于红藻门海膜科, 本研究通过对该属的台湾那屿藻(新拟名)Yonagunia formosana (Okamura) Kawaguchi et Masuda进行了形态学和基于rbcL序列的系统发育分析, 证实台湾那屿藻存在于我国海南省东南部地区, 并较为详细地描述了该物种的分枝形式、小育枝、皮层细胞等营养结构以及生殖结构, 发现藻体的枝端形状比最初报道的模式种更加多样化, 且藻体各部分结构(分枝形式、小育枝、皮层细胞等)的大小与最初报道的模式种也存在一定的差异。本研究是我国海南省东南部地区台湾那屿藻的首次分子系统发育学研究报道。

Morphological and phylogenetic studies of Yonagunia formosana in southeastern Hainan province,China

The genus Yonagunia Kawaguchi et Masuda belongs to Halymeniaceae, Rhodophyta. In this study, we confirmed the existence of Y. formosana in southeastern Hainan Province, China based on the morphological study Yonagunia formosana (Okamura) Kawaguchi et Masuda, combined with the phylogenetic analysis of rbcL sequences. We described in detail the branching form, proliferations, cortical cells, and other vegetative structures and reproductive structures of Y. formosana. We found that the shapes of branches are more diverse, and the size of the structure of the algae, including the branch form, proliferations, and cortical cells and so on, is also different from the type species. This study is the first molecular phylogenetic research report of Y. formosana in southeastern Hainan province.