Survey of genome size in 10 invertebrates from hydrothermal vent and cold seep

Zheng Ping; Wang Minxiao; Li Chaolun; Sun Song

doi:10.3969/j.issn.0253-4193.2016.06.005

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Zheng Ping, Wang Minxiao, Li Chaolun, Sun Song. Survey of genome size in 10 invertebrates from hydrothermal vent and cold seep[J]. Haiyang Xuebao, 2016, 38(6): 41-50. doi: 10.3969/j.issn.0253-4193.2016.06.005

Citation:

Zheng Ping, Wang Minxiao, Li Chaolun, Sun Song. Survey of genome size in 10 invertebrates from hydrothermal vent and cold seep[J]. Haiyang Xuebao, 2016, 38(6): 41-50. doi: 10.3969/j.issn.0253-4193.2016.06.005

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Survey of genome size in 10 invertebrates from hydrothermal vent and cold seep

doi: 10.3969/j.issn.0253-4193.2016.06.005

1.
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;University of Chinese Academy of Sciences, Beijing 100049, China
2.
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

Received Date: 2015-12-24

Abstract

Abstract

Knowledge of genome size is an important prerequisite for the development of many genomic resources. To better understand the evolution of genome size and their roles in environmental adaption, it is necessary to collect data covering a broad taxonomic base, especially from particular ecosystems. With high disturbance and unique environmental features, hydrothermal vent and cold seep offer a typical model to investigate the variation of genome size under extreme environments. Here we measured 10 deep-sea invertebrates from hydrothermal vent and cold seep by flow cytometry. The C-value ranged from 0.87 pg to 12.28 pg, and the crustaceans have larger genomes. Then we compared the three common species (Bathymodiolus platifrons, Shinkaia crosnieri and Alvinocaris longirostris) in both environments. Though with high level of intraspecific variations, no significant differences were revealed between two populations. We also compared the obtained genome sizes to their corresponding taxonomic relatives (at family or order level). No evidence of genome size expansion or reduction were found in invertebrates from chemosynthetic environments. In our study, there are no clear trends of the genome size variations under the extreme deep-sea ecological conditions.
- hydrothermal vent,
- cold seep,
- chemosynthetic system,
- genome size,
- C-value,
- flow cytometry

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References(21)

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