Respiratory protein-driven selectivity during the Permian-Triassic mass extinction  

作　　者：Haijun Song Yuyang Wu Xu Dai Jacopo Dal Corso Fengyu Wang Yan Feng Daoliang Chu Li Tian Huyue Song William JFoster 

机构地区：[1]State Key Laboratory of Biogeology and Environmental Geology,School of Earth Sciences,China University of Geosciences,Wuhan 430074,China [2]Biogéosciences,UMR 6282,CNRS,Universitéde Bourgogne,21000 Dijon,France [3]Universitat Hamburg,Institute for Geology,20148 Hamburg,Germany

出　　处：《The Innovation》2024年第3期122-128,共7页创新（英文）

基　　金：State Key R&D Project of China(2023YFF0804000);National Natural Science Foundation of China(42325202,92155201,and 92255303),the 111 Project(B08030);Natural Science Foundation of Hubei(2023 AFA006);Fundamental Research Funds for the Central Universities,China University of Geosciences(Wuhan).

摘　　要：Extinction selectivity determines the direction of macroevolution,especially during mass extinction;however,its driving mechanisms remain poorly understood.By investigating the physiological selectivity of marine animals during the Permian-Triassic mass extinction,we found that marine clades with lower O2-carrying capacity hemerythrin proteins and those relying on O2 diffusion experienced significantly greater extinction intensity and body-size reduction than those with higher O2-carrying capacity hemoglobin or hemocyanin proteins.Our findings suggest that animals with high O2-carrying capacity obtained the necessary O2 even under hypoxia and compensated for the increased energy requirements caused by ocean acidification,which enabled their survival during the Permian-Triassic mass extinction.Thus,high O2-carrying capacity may have been crucial for the transition from the Paleozoic to the Modern Evolutionary Fauna.

关 键 词：EXTINCTION SELECTIVITY finding 

分 类 号：Q95[生物学—动物学]