Origins and evolution of extreme life span in Pacific Ocean rockfishes.
Origins and evolution of extreme life span in Pacific Ocean rockfishes.
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DOI:
10.1126/science.abg5332
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发表时间:
2021-11-12
期刊:
影响因子:
--
通讯作者:
Sudmant PH
中科院分区:
文献类型:
--
作者:
Kolora SRR;Owens GL;Vazquez JM;Stubbs A;Chatla K;Jainese C;Seeto K;McCrea M;Sandel MW;Vianna JA;Maslenikov K;Bachtrog D;Orr JW;Love M;Sudmant PH
Pacific Ocean rockfishes (genus Sebastes) exhibit extreme variation in lifespan with some species amongst the most long-lived extant vertebrates. We de-novo assembled the genomes of 88 rockfish species and from this identified repeated signatures of positive selection in DNA repair pathways in long-lived taxa and 137 longevity-associated genes with effects on lifespan through insulin signaling, and pleiotropic effects through size and environmental adaptations. A genome-wide screen of structural variation reveals copy number expansions in the immune modulatory butyrophilin gene family in long-lived species. The evolution of different rockfish life-histories is coupled to genetic diversity and reshapes the mutational spectrum driving segregating CpG->TpG variants in long-lived species. These analyses highlight the genetic innovations that underlie life-history trait adaptations and, in turn, how they shape genomic diversity. Genomes of 88 rockfish species identify the genetic drivers of longevity and how life-history adaptations can reshape patterns of genetic diversity.
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