Genome of a giant isopod, Bathynomus jamesi, provides insights into body size evolution and adaptation to deep-sea environment

doi:10.1186/s12915-022-01302-6

CORC > 海洋研究所 > 中国科学院海洋研究所 > 实验海洋生物学重点实验室

	Genome of a giant isopod, Bathynomus jamesi, provides insights into body size evolution and adaptation to deep-sea environment
	Yuan, Jianbo 1,3; Zhang, Xiaojun 1,3; Kou, Qi 1,3; Sun, Yamin 2; Liu, Chengzhang 1,3; Li, Shihao 1,3; Yu, Yang 1,3; Zhang, Chengsong 1,3; Jin, Songjun 1,3; Xiang, Jianhai 1,3
刊名	BMC BIOLOGY
	2022-05-13
卷号	20 期号:1 页码:17
关键词	Giant isopod Deep-sea Genome assembly Body size evolution Oligotrophic adaptation
DOI	10.1186/s12915-022-01302-6
通讯作者	Xiang, Jianhai(jhxiang@qdio.ac.cn) ; Li, Xinzheng(lixzh@qdio.ac.cn) ; Li, Fuhua(fhli@qdio.ac.cn)
英文摘要	Background The deep-sea may be regarded as a hostile living environment, due to low temperature, high hydrostatic pressure, and limited food and light. Isopods, a species-rich group of crustaceans, are widely distributed across different environments including the deep sea and as such are a useful model for studying adaptation, migration, and speciation. Similar to other deep-sea organisms, giant isopods have larger body size than their shallow water relatives and have large stomachs and fat bodies presumably to store organic reserves. In order to shed light on the genetic basis of these large crustaceans adapting to the oligotrophic environment of deep-sea, the high-quality genome of a deep-sea giant isopod Bathynomus jamesi was sequenced and assembled. Results B. jamesi has a large genome of 5.89 Gb, representing the largest sequenced crustacean genome to date. Its large genome size is mainly attributable to the remarkable proliferation of transposable elements (84%), which may enable high genome plasticity for adaptive evolution. Unlike its relatives with small body size, B. jamesi has expanded gene families related to pathways of thyroid and insulin hormone signaling that potentially contribute to its large body size. Transcriptomic analysis showed that some expanded gene families related to glycolysis and vesicular transport were specifically expressed in its digestive organs. In addition, comparative genomics and gene expression analyses in six tissues suggested that B. jamesi has inefficient lipid degradation, low basal metabolic rate, and bulk food storage, suggesting giant isopods adopt a more efficient mechanism of nutrient absorption, storage, and utilization to provide sustained energy supply for their large body size. Conclusions Taken together, the giant isopod genome may provide a valuable resource for understanding body size evolution and adaptation mechanisms of macrobenthic organisms to deep-sea environments.
资助项目	National Key Research & Development Program of China[2018YFD0900404] ; National Key Research & Development Program of China[2018YFD0900103] ; Natural Science Foundation of China[42176105] ; Natural Science Foundation of China[31830100] ; Natural Science Foundation of China[31972782] ; Natural Science Foundation of China[41876167] ; China Agriculture Research system-48[CARS-48]
WOS研究方向	Life Sciences & Biomedicine - Other Topics
语种	英语
出版者	BMC
WOS记录号	WOS:000795529700001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/179254]
专题	海洋研究所_实验海洋生物学重点实验室
通讯作者	Xiang, Jianhai; Li, Xinzheng; Li, Fuhua
作者单位	1.Chinese Acad Sci, CAS & Shandong Prov Key Lab Expt Marine Biol, Dept Marine Organism Taxon & Phylogeny, Ctr Ocean Mega Sci,Inst Oceanol, Qingdao 266071, Peoples R China 2.Res Ctr Funct Genom & Biochip, Tianjin 300457, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Jianbo,Zhang, Xiaojun,Kou, Qi,et al. Genome of a giant isopod, Bathynomus jamesi, provides insights into body size evolution and adaptation to deep-sea environment[J]. BMC BIOLOGY,2022,20(1):17.
APA	Yuan, Jianbo.,Zhang, Xiaojun.,Kou, Qi.,Sun, Yamin.,Liu, Chengzhang.,...&Li, Fuhua.(2022).Genome of a giant isopod, Bathynomus jamesi, provides insights into body size evolution and adaptation to deep-sea environment.BMC BIOLOGY,20(1),17.
MLA	Yuan, Jianbo,et al."Genome of a giant isopod, Bathynomus jamesi, provides insights into body size evolution and adaptation to deep-sea environment".BMC BIOLOGY 20.1(2022):17.