Genomic Variations in the Tea Leafhopper Reveal the Basis of Its Adaptive Evolution  

作　　者：Qian Zhao Longqing Shi Weiyi He Jinyu Li Shijun You Shuai Chen Jing Lin Yibin Wang Liwen Zhang Guang Yang Liette Vasseur Minsheng You 

机构地区：[1]State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops,Institute of Applied Ecology,Fujian Agriculture and Forestry University,Fuzhou 350002,China [2]Institute of Rice,Fujian Academy of Agricultural Sciences,Fuzhou 350018,China [3]Tea Research Institute,Fujian Academy of Agricultural Sciences,Fuzhou 350001,China [4]Center for Genomics and Biotechnology,Fujian Agriculture and Forestry University,Fuzhou 350002,China [5]Department of Biological Sciences,Brock University,St.Catharines,ON L2S 3A1,Canada

出　　处：《Genomics, Proteomics & Bioinformatics》2022年第6期1092-1105,共14页基因组蛋白质组与生物信息学报（英文版）

基　　金：supported by the National Key R&D Program of China(Grant No.2019YFD1002100);the Natural Science Foundation of Fujian Province,China(Grant No.2020J01525);the Fujian Agriculture and Forestry University Construction Project for Technological Innovation and Service System of Tea Industry,China(Grant No.K1520005A03);the Key International Science and Technology cooperation Project of China(Grant No.2016YFE0102100).

摘　　要：Tea green leafhopper(TGL),Empoasca onukii,is of biological and economic interest.Despite numerous studies,the mechanisms underlying its adaptation and evolution remain enigmatic.Here,we use previously untapped genome and population genetics approaches to examine how the pest adapted to different environmental variables and thus has expanded geographically.We complete a chromosome-level assembly and annotation of the E.onukii genome,showing notable expansions of gene families associated with adaptation to chemoreception and detoxification.Genomic signals indicating balancing selection highlight metabolic pathways involved in adaptation to a wide range of tea varieties grown across ecologically diverse regions.Patterns of genetic variations among 54 E.onukii samples unveil the population structure and evolutionary history across different tea-growing regions in China.Our results demonstrate that the genomic changes in key pathways,including those linked to metabolism,circadian rhythms,and immune system functions,may underlie the successful spread and adaptation of E.onukii.This work highlights the genetic and molecular basis underlying the evolutionary success of a species with broad economic impacts,and provides insights into insect adaptation to host plants,which will ultimately facilitate more sustainable pest management.

关 键 词：Tea green leafhopper Genomic variation Population genetics Local adaptation Evolutionary history 

分 类 号：S435.711[农业科学—农业昆虫与害虫防治]