Morphology, reproduction and taxonomy of Volvox dissipatrix (Chlorophyceae) from Thailand, with a description of Volvox zeikusii sp. nov.
Morphology, reproduction and taxonomy of Volvox dissipatrix (Chlorophyceae) from Thailand, with a description of Volvox zeikusii sp. nov.
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DOI：
10.1080/00318884.2018.1540238
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发表时间：
2019-01-01
期刊：
影响因子：
1.6
通讯作者：
Kawachi, Masanobu
中科院分区：
文献类型：
--
作者：
Nozaki, Hisayoshi;Takusagawa, Mari;Kawachi, Masanobu
从泰国采集的团藻菌株产生了一个非常大的无性球形体，最大直径超过2 mm长。根据体细胞之间的细胞质桥、凝胶状基质结构、雌雄同株的有性球体和报告的大型无性球体的原始描述，将该泰国团藻鉴定为散斑团藻。通过对泰国和澳大利亚的雌雄同株的散斑团藻及其近缘异宗配合种的光镜和电镜特征及核核糖体DNA内转录间隔区2序列的比较分析，证明后者代表一个新种--齐氏团藻（Volvox zeikusii Nozaki）。
A strain of Volvox collected from Thailand produced a very large asexual spheroid with maximum diameter over 2 mm long. This Thai alga was identified as Volvox dissipatrix based on the delicate cytoplasmic bridges between somatic cells, gelatinous matrix structure, monoecious sexual spheroids and the original description reporting the large asexual spheroids. Comparative analyses of light and electron microscopic features and internal transcribed spacer 2 sequences of the nuclear ribosomal DNA of Thai and Australian monoecious strains of V. dissipatrix and their closely related heterothallic strains demonstrated that the latter represents a new species, Volvox zeikusii Nozaki.