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

doi:10.11978/2020150

Abstract

Abstract:

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.

Key words: Hainan, marine algae, Yonagunia formosana, morphology, rbcL

CLC Number:

Q949.29

LIU Jinmei, HUANG Bingxin, DING Lanping, WANG Xuecong, YAN Jing, YAN Panzhu, ZHANG Yao. Morphological and phylogenetic studies of Yonagunia formosana in southeastern Hainan province, China[J].Journal of Tropical Oceanography, 2021, 40(6): 76-82.

Figures/Tables 3

Fig. 1

Fig. 2

Tab. 1

References 22

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结构	物种
结构	Y. formosana	Y. ligulata	本研究样品
高度	3~8cm	4~20cm	2.8~8.5cm
质地	软骨质	软骨质	软骨质
分枝形式	二叉式分枝或近二叉式分枝	近二叉式分枝	二叉式分枝或不规则分枝
小育枝	表面、边缘均较多, 约5mm	表面少, 边缘多, 1~15mm	表面、边缘均较多, 约0.5~3mm
枝端形状	枝端钝, 或分叉	枝端钝, 或分叉	枝端钝, 或较尖, 或分叉, 或着生有小育枝
皮层	60~75μm, 3~7层细胞	120~160μm, 4~5层细胞	厚约16~83.5μm, 3~9层细胞
髓部	厚250~400μm, 髓丝直径5~10μm	厚220~400µm, 髓丝直径4~13µm	厚约260~475μm, 髓丝直径5~13μm
四分孢子囊	着生于皮层, 未成熟	着生于皮层, 直径9~12μm, 长38~56μm	着生于皮层, 宽7~9.4μm, 长19~25.6μm
囊果	着生于髓部, 球形	/	着生于髓部, 近球形
模式产地	中国台湾岛	马达加斯加岛	/
分布地区	中国台湾岛和海南岛/马来西亚//越南	马达加斯加岛	中国海南省三亚/博鳌
参考文献	Kawaguchi et al, 2004	Manghisi et al, 2015	本文

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

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