Intraspecific mitochondrial genome comparison identified CYTB as a high-resolution population marker in a new pest Athetis lepigone

文献类型： 外文期刊

第一作者： Chen, Lei

作者： Chen, Lei;Dai, Jun;Guo, Yan-Fei;Sun, Jing-Tao;Hong, Xiao-Yue;Huang, Jian-Rong

作者机构：

关键词： Athetis lepigone; Mitochondrial genome; Population marker

期刊名称：GENOMICS （ 影响因子：5.736； 五年影响因子：4.939 ）

ISSN： 0888-7543

年卷期： 2019 年 111 卷 4 期

页码：

收录情况： SCI

摘要： A new outbreak pest, Athetis lepigone (Moschler) (Lepidoptera: Noctuidae), has caused severe economic loss in maize crops in China. In order to conduct population genetics study with a more polymorphic and scientific mitochondrial marker, we sequenced the complete mitochondrial genomes of 13 different A. lepigone individuals. Intraspecific comparison of all PCGs showed that the NADH dehydrogenase and cytochrome b genes had the highest nucleotide diversity. We also found evidence of episodic positive selection on two amino acids, which are encoded by NADH dehydrogenase genes (ND3 and ND4L), against a background of widespread neutral selection of all other mitochondrial PCGs. The genetic divergence observed in this study indicated that the cytochrome b gene (CYTB) is better than COI at recovering population structure. The preliminary population genetic analysis illustrated strong gene flow among A. lepigone populations in China. Our study provides basic information for further research on population genetics of A. lepigone.

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