Genomes of Two Flying Squid Species Provide Novel Insights into Adaptations of Cephalopods to Pelagic Life  

作　　者：Min Li Baosheng Wu Peng Zhang Ye Li Wenjie Xu Kun Wang Qiang Qiu Jun Zhang Jie Li Chi Zhang Jiangtao Fan Chenguang Feng Zuozhi Chen 

机构地区：[1]South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Guangzhou 510300,China [2]School of Ecology and Environment,Northwestern Polytechnical University,Xi’an 710072,China [3]Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 511458,China [4]Key Laboratory for Sustainable Utilization of Open-Sea Fishery,Ministry of Agriculture and Rural Affairs,Guangdong Provincial Key Laboratory of Fishery Ecology and Environment,Guangzhou 510300,China [5]Qinghai Provincial Key Laboratory of Crop Molecular Breeding,CAS Key Laboratory of Adaptation and Evolution of Plateau Biota,Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810008,China [6]CAS Key Laboratory of Aquatic Biodiversity and Conservation,Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,China

出　　处：《Genomics, Proteomics & Bioinformatics》2022年第6期1053-1065,共13页基因组蛋白质组与生物信息学报（英文版）

基　　金：supported by grants from the Guangdong Major Project of Basic and Applied Basic Research, China (Grant No. 2019B030302004);the National Key R&D Program of China (Grant No. 2018YFC1406502);the Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou),China(Grant No. GML2019ZD0605);the Financial Fund of the Ministry of Agriculture and Rural Affairs of China (Grant No. NFZX2018);the Central Public-interest Scientific Basal Research Fund, Chinese Academy of Fishery Sciences (Grant Nos. 2019HY-XKQ03, 2020TD05, and 2021SD18);the China Postdoctoral Science Foundation (Grant No. 2021M693342);the Hubei Postdoctoral Innovation Post Project, China;the 1000 Talent Project of Shaanxi Province, China;the Research Funds for Interdisciplinary subject of Northwestern Polytechnical University, China (Grant No. 19SH030408)

摘　　要：Pelagic cephalopods have evolved a series of fascinating traits,such as excellent visual acuity,high-speed agility,and photophores for adaptation to open pelagic oceans.However,the genetic mechanisms underpinning these traits are not well understood.Thus,in this study,we obtained high-quality genomes of two purpleback flying squid species(Sthenoteuthis oualaniensis and Sthenoteuthis sp.),with sizes of 5450 Mb and 5651 Mb,respectively.Comparative genomic analyses revealed that the S-crystallin subfamily SL20-1 associated with visual acuity in the purpleback flying squid lineage was significantly expanded,and the evolution of high-speed agility for the species was accompanied by significant positive selection pressure on genes related to energy metabolism.These molecular signals might have contributed to the evolution of their adaptative predatory and anti-predatory traits.In addition,the transcriptomic analysis provided clear indications of the evolution of the photophores of purpleback flying squids,especially the recruitment of new genes and energy metabolism-related genes which may have played key functional roles in the process.

关 键 词：CEPHALOPODA Evolution Flying squid Genome Photophore 

分 类 号：Q953[生物学—动物学]