A chromosome-level genome of electric catfish(Malapterurus electricus)provided new insights into order Siluriformes evolution

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外文摘要：The electric catfish(Malapterurus electricus),belonging to the family Malapteruridae,order Siluriformes(Actinopterygii:Ostariophysi),is one of the six branches that has independently evolved electrical organs.We assembled a 796.75 Mb M.electricus genome and anchored 88.72％sequences into 28 chromosomes.Gene family analysis revealed 295 expanded gene families that were enriched on functions related to glutamate receptors.Convergent evolutionary analyses of electric organs among different lineage of electric fishes further revealed that the coding gene of rho guanine nucleotide exchange factor 4-like(arhgef4),which is associated with G-protein coupled receptor(GPCR)signaling pathway,underwent adaptive parallel evolution.Gene identification suggests visual degradation in catfishes,and an important role for taste in environ-mental adaptation.Our findings fill in the genomic data for a branch of electric fish and provide a relevant genetic basis for the adaptive evolution of Siluriformes.

外文关键词：

Electric fishKaryotype analysisConvergent evolutionEnvironmental adaptationHistorical effective population size

作者：

Meiru Liu、Yue Song、Suyu Zhang、Lili Yu、Zengbao Yuan、Hengjia Yang、Mengqi Zhang、Zhuocheng Zhou、Inge Seim、Shanshan Liu、Guangyi Fan、Huanming Yang

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作者单位：

College of Life Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

BGI-Qingdao,BGI-Shenzhen,Qingdao 266555,China

BGI-Shenzhen,Shenzhen 518083,China

Professional Committee of Native Aquatic Organisms and Water Ecosystem of China Fisheries Association,Beijing 100125,China

Integrative Biology Laboratory,College of Life Sciences,Nanjing Normal University,Nanjing 210023,China

State Key Laboratory of Agricultural Genomics,BGI-Shenzhen,Shenzhen 518083,China

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出版年：

2024

DOI：

10.1007/s42995-023-00197-8

海洋生命科学与技术(英文)

ISSN：

年,卷(期)：2024.6(1)