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杨晗, 吕彬, 银海强, 李枢强. 2021: 比较转录组学揭示群居蜘蛛中能量代谢通路的趋同进化. 动物学研究, 42(2): 195-206. DOI: 10.24272/j.issn.2095-8137.2020.281
引用本文: 杨晗, 吕彬, 银海强, 李枢强. 2021: 比较转录组学揭示群居蜘蛛中能量代谢通路的趋同进化. 动物学研究, 42(2): 195-206. DOI: 10.24272/j.issn.2095-8137.2020.281
Han Yang, Bin Lyu, Hai-Qiang Yin, Shu-Qiang Li. 2021: Comparative transcriptomics highlights convergent evolution of energy metabolic pathways in group-living spiders. Zoological Research, 42(2): 195-206. DOI: 10.24272/j.issn.2095-8137.2020.281
Citation: Han Yang, Bin Lyu, Hai-Qiang Yin, Shu-Qiang Li. 2021: Comparative transcriptomics highlights convergent evolution of energy metabolic pathways in group-living spiders. Zoological Research, 42(2): 195-206. DOI: 10.24272/j.issn.2095-8137.2020.281

比较转录组学揭示群居蜘蛛中能量代谢通路的趋同进化

Comparative transcriptomics highlights convergent evolution of energy metabolic pathways in group-living spiders

  • 摘要: 大部分蜘蛛有攻击性,捕食同类和其他生物,营独居生活。少数营群居生活的蜘蛛,是解析生物从独居到社会性群居的重要材料。该研究基于比较转录组学,分析了2种群居蜘蛛和12种独居蜘蛛的进化模式,发现群居蜘蛛营养代谢和自噬通路基因受到正选择,与营养相关基因发生氨基酸替换和进化速率升高;发现群居蜘蛛自噬基因进化速率降低,与能量稳态的约束力增加吻合。研究结果揭示了能量代谢通路在蜘蛛从独居到社会性群居转变中的作用。

     

    Abstract: Although widely thought to be aggressive, solitary, and potentially cannibalistic, some spider species have evolved group-living behaviors. The distinct transition provides the framework to uncover group-living evolution. Here, we conducted a comparative transcriptomic study and examined patterns of molecular evolution in two independently evolved group-living spiders and twelve solitary species. We report that positively selected genes among group-living spider lineages are significantly enriched in nutrient metabolism and autophagy pathways. We also show that nutrient-related genes of group-living spiders convergently experience amino acid substitutions and accelerated relative evolutionary rates. These results indicate adaptive convergence of nutrient metabolism that may ensure energy supply in group-living spiders. The decelerated evolutionary rate of autophagy-related genes in group-living lineages is consistent with an increased constraint on energy homeostasis as would be required in a group-living environment. Together, the results show that energy metabolic pathways play an important role in the transition to group-living in spiders.

     

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