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Insights into deep-sea adaptations and host-symbiont interactions: A comparative transcriptome study on Bathymodiolus mussels and their coastal relatives
Zheng, Ping1,2; Wang, Minxiao1,3; Li, Chaolun1,2,3,4; Sun, Xiaoqing5; Wang, Xiaocheng1,2; Sun, Yan1; Sun, Song1,2,4,6
2017-10-01
Source PublicationMOLECULAR ECOLOGY
Volume26Issue:19Pages:5133-5148
SubtypeArticle
AbstractMussels (Bivalve: Mytilidae) have adapted to various habitats, from fresh water to the deep sea. To understand their adaptive characteristics in different habitats, particularly in the bathymodiolin mussels in deep-sea chemosynthetic ecosystems, we conducted a comparative transcriptomic analysis between deep-sea bathymodiolin mussels and their shallow-water relatives. A number of gene families related to stress responses were shared across all mussels, without specific or significantly expanded families in deep-sea species, indicating that all mussels are capable of adapting to diverse harsh environments, but that different members of the same gene family may be preferentially utilized by different species. One of the most extraordinary trait of bathymodiolin mussels is their endosymbiosis. Lineage-specific and positively selected TLRs and highly expressed C1QDC proteins were identified in the gills of the bathymodiolins, suggesting their possible functions in symbiont recognition. However, pattern recognition receptors of the bathymodiolins were globally reduced, facilitating the invasion and maintenance of the symbionts obtained by either endocytosis or phagocytosis. Additionally, various transporters were positively selected or more highly expressed in the deep-sea mussels, indicating a means by which necessary materials could be provided for the symbionts. Key genes supporting lysosomal activity were also positively selected or more highly expressed in the deep-sea mussels, suggesting that nutrition fixed by the symbionts can be absorbed in a farming way wherein the symbionts are digested by lysosomes. Regulation of key physiological processes including lysosome activity, apoptosis and immune reactions is needed to maintain a stable host-symbiont relationship, but the mechanisms are still unclear.
KeywordBathymodiolin Deep-sea Adaptation Immune Lysosome Symbiosis Transcriptome
DOI10.1111/mec.14160
Indexed BySCI
Language英语
WOS IDWOS:000413375500021
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/143240
Collection海洋生态与环境科学重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Deep Sea Res Ctr, Qingdao, Peoples R China
4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
5.Novogene Biotechnol, Qingdao, Peoples R China
6.Chinese Acad Sci, Jiaozhou Bay Marine Ecosyst Res Stn, Qingdao, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
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Zheng, Ping,Wang, Minxiao,Li, Chaolun,et al. Insights into deep-sea adaptations and host-symbiont interactions: A comparative transcriptome study on Bathymodiolus mussels and their coastal relatives[J]. MOLECULAR ECOLOGY,2017,26(19):5133-5148.
APA Zheng, Ping.,Wang, Minxiao.,Li, Chaolun.,Sun, Xiaoqing.,Wang, Xiaocheng.,...&Sun, Song.(2017).Insights into deep-sea adaptations and host-symbiont interactions: A comparative transcriptome study on Bathymodiolus mussels and their coastal relatives.MOLECULAR ECOLOGY,26(19),5133-5148.
MLA Zheng, Ping,et al."Insights into deep-sea adaptations and host-symbiont interactions: A comparative transcriptome study on Bathymodiolus mussels and their coastal relatives".MOLECULAR ECOLOGY 26.19(2017):5133-5148.
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