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Variation among 532 genomes unveils the origin and evolutionary history of a global insect herbivore.


ABSTRACT: The diamondback moth, Plutella xylostella is a cosmopolitan pest that has evolved resistance to all classes of insecticide, and costs the world economy an estimated US $4-5 billion annually. We analyse patterns of variation among 532?P. xylostella genomes, representing a worldwide sample of 114 populations. We find evidence that suggests South America is the geographical area of origin of this species, challenging earlier hypotheses of an Old-World origin. Our analysis indicates that Plutella xylostella has experienced three major expansions across the world, mainly facilitated by European colonization and global trade. We identify genomic signatures of selection in genes related to metabolic and signaling pathways that could be evidence of environmental adaptation. This evolutionary history of P. xylostella provides insights into transoceanic movements that have enabled it to become a worldwide pest.

SUBMITTER: You M 

PROVIDER: S-EPMC7211002 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Variation among 532 genomes unveils the origin and evolutionary history of a global insect herbivore.

You Minsheng M   Ke Fushi F   You Shijun S   Wu Zhangyan Z   Liu Qingfeng Q   He Weiyi W   Baxter Simon W SW   Yuchi Zhiguang Z   Vasseur Liette L   Gurr Geoff M GM   Ward Christopher M CM   Cerda Hugo H   Yang Guang G   Peng Lu L   Jin Yuanchun Y   Xie Miao M   Cai Lijun L   Douglas Carl J CJ   Isman Murray B MB   Goettel Mark S MS   Song Qisheng Q   Fan Qinghai Q   Wang-Pruski Gefu G   Lees David C DC   Yue Zhen Z   Bai Jianlin J   Liu Tiansheng T   Lin Lianyun L   Zheng Yunkai Y   Zeng Zhaohua Z   Lin Sheng S   Wang Yue Y   Zhao Qian Q   Xia Xiaofeng X   Chen Wenbin W   Chen Lilin L   Zou Mingmin M   Liao Jinying J   Gao Qiang Q   Fang Xiaodong X   Yin Ye Y   Yang Huanming H   Wang Jian J   Han Liwei L   Lin Yingjun Y   Lu Yanping Y   Zhuang Mousheng M  

Nature communications 20200508 1


The diamondback moth, Plutella xylostella is a cosmopolitan pest that has evolved resistance to all classes of insecticide, and costs the world economy an estimated US $4-5 billion annually. We analyse patterns of variation among 532 P. xylostella genomes, representing a worldwide sample of 114 populations. We find evidence that suggests South America is the geographical area of origin of this species, challenging earlier hypotheses of an Old-World origin. Our analysis indicates that Plutella xy  ...[more]

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