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题名: Euchlorocystis gen. nov and Densicystis gen. nov., Two New Genera of Oocystaceae Algae from High-altitude Semi-saline Habitat (Trebouxiophyceae, Chlorophyta)
作者: Liu, Xudong1, 2; Zhu, Huan1; Song, Huiyin1, 2; Wang, Qinghua1, 2; Xiong, Xiong1; Wu, Chenxi1; Liu, Guoxiang1; Hu, Zhengyu3
关键词: Angzicuo Lake ; Densicystis glomerata ; Euchlorocystis subsalina ; Oocystis marina ; Qinghai Lake ; semi-saline species
刊名: JOURNAL OF EUKARYOTIC MICROBIOLOGY
发表日期: 2018-03-01
DOI: 10.1111/jeu.12455
卷: 65, 期:2, 页:200-210
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Microbiology
研究领域[WOS]: Microbiology
英文摘要: The Oocystaceae family is generally considered to contain common freshwater eukaryotic microalgae, and few are reported living in semi-saline habitats. Our latest ecological survey in Qinghai Lake and Angzicuo Lake, both large, closed, high-altitude, semi-saline lakes located on the Qinghai-Tibet plateau in China, revealed Oocystaceae species as a dominant group among plankton. Since limited knowledge exists about semi-saline species in the Oocystaceae family, a taxonomical study was carried out using morphological and phylogenetic methods. Using this approach, four new strains of Oocystaceae were identified and successfully cultured in the lab. Molecular results correlated with morphological characters and resolved these species into at least three genera. A new genus, Euchlorocystis, with type species Euchlorocystis subsalina, is described here as having the distinctive morphology of multiple pyrenoids per chloroplast among Oocystaceae, and an independent phylogenetic position at the base of the Oocystaceae. Similarly, the genus Densicystis, with type species Densicystis glomerata, is newly proposed here as having a unique colony morphology of dozens or hundreds of little cells tightly embedded in ellipsoid to round mucilage masses. Oocystis marina, originally described from the Baltic Sea, was also identified in Qinghai Lake and Angzicuo Lake and phylogenetically positioned in the semi-saline clade of the Oocystaceae. The result that a marine species was detected in the closed inland lakes implies a further need to reevaluate the origins of these species.
关键词[WOS]: QINGHAI LAKE ; PHYLOGENETIC POSITION ; CHINA ; WATER ; SEDIMENTS
语种: 英语
项目资助者: National Natural Science Foundation of China(31670202) ; Special Foundment of Science and Technology Basic Work of China(2014FY210700)
WOS记录号: WOS:000426628300006
ISSN号: 1066-5234
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/50904
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
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