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学科主题: Multidisciplinary Sciences
题名: Prevalent Ciliate Symbiosis on Copepods: High Genetic Diversity and Wide Distribution Detected Using Small Subunit Ribosomal RNA Gene
作者: Guo, ZL ; Liu, S ; Hu, SM ; Li, T ; Huang, YS ; Liu, GX ; Zhang, H ; Lin, SJ
通讯作者: huan.zhang@uconn.edu ; senjie.lin@uconn.edu
刊名: PLOS ONE
发表日期: 2012
卷: 7, 期:9, 页:e44847
部门归属: [Guo, Zhiling; Liu, Sheng; Hu, Simin; Li, Tao] Chinese Acad Sci, Key Lab Marine Bioresources Sustainable Utilizat, S China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China; [Guo, Zhiling; Zhang, Huan; Lin, Senjie] Univ Connecticut, Dept Marine Sci, Groton, CT 06340 USA; [Lin, Senjie] Xiamen Univ, Marine Biodivers & Global Change Lab, Xiamen, Fujian, Peoples R China; [Huang, Yousong; Liu, Guangxing; Zhang, Huan] Ocean Univ China, Dept Environm Sci, Qingdao, Shandong, Peoples R China
项目归属: LMB
摘要: Toward understanding the genetic diversity and distribution of copepod-associated symbiotic ciliates and the evolutionary relationships with their hosts in the marine environment, we developed a small subunit ribosomal RNA gene (18S rDNA)based molecular method and investigated the genetic diversity and genotype distribution of the symbiotic ciliates on copepods. Of the 10 copepod species representing six families collected from six locations of Pacific and Atlantic Oceans, 9 were found to harbor ciliate symbionts. Phylogenetic analysis of the 391 ciliate 18S rDNA sequences obtained revealed seven groups (ribogroups), six (containing 99% of all the sequences) belonging to subclass Apostomatida, the other clustered with peritrich ciliate Vorticella gracilis. Among the Apostomatida groups, Group III were essentially identical to Vampyrophrya pelagica, and the other five groups represented the undocumented ciliates that were close to Vampyrophrya/Gymnodinioides/Hyalophysa. Group VI ciliates were found in all copepod species but one (Calanus sinicus), and were most abundant among all ciliate sequences obtained, indicating that they are the dominant symbiotic ciliates universally associated with copepods. In contrast, some ciliate sequences were found only in some of the copepods examined, suggesting the host selectivity and geographic differentiation of ciliates, which requires further verification by more extensive sampling. Our results reveal the wide occurrence and high genetic diversity of symbiotic ciliates on marine copepods and highlight the need to systematically investigate the host- and geography-based genetic differentiation and ecological roles of these ciliates globally.
语种: 英语
WOS记录号: WOS:000308860100026
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/9804
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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Guo, ZL; Liu, S; Hu, SM; Li, T; Huang, YS; Liu, GX; Zhang, H; Lin, SJ.Prevalent Ciliate Symbiosis on Copepods: High Genetic Diversity and Wide Distribution Detected Using Small Subunit Ribosomal RNA Gene,PLOS ONE,2012,7(9):e44847
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