The Adaptive Evolution in the Fall Armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae) Revealed by the Diversity of Larval Gut Bacteria
文献类型： 外文期刊
作者： Wang, Yan-Ping 1 ; Liu, Xu 1 ; Yi, Chun-Yan 1 ; Chen, Xing-Yu 2 ; Liu, Chang-Hua 1 ; Zhang, Cui-Cui 1 ; Chen, Qing-Dong 1 ; Chen, Song 1 ; Liu, Hong-Ling 1 ; Pu, De-Qiang 1 ;
作者机构： 1.Sichuan Acad Agr Sci, Inst Plant Protect, Key Lab Integrated Pest Management Southwest Crops, Chengdu 610066, Peoples R China
2.Sichuan Acad Agr Sci, Serv Ctr, Chengdu 610066, Peoples R China
关键词： Spodoptera frugiperda; coevolution; 16S rDNA; gut bacteria diversity; bacterial functional analysis
期刊名称：GENES （ 影响因子：3.5； 五年影响因子：3.9 ）
ISSN：
年卷期： 2023 年 14 卷 2 期
页码：
收录情况： SCI
摘要： Insect gut microbes have important roles in host feeding, digestion, immunity, development, and coevolution with pests. The fall armyworm, Spodoptera frugiperda (Smith, 1797), is a major migratory agricultural pest worldwide. The effects of host plant on the pest's gut bacteria remain to be investigated to better understand their coevolution. In this study, differences in the gut bacterial communities were examined for the fifth and sixth instar larvae of S. frugiperda fed on leaves of different host plants (corn, sorghum, highland barley, and citrus). The 16S rDNA full-length amplification and sequencing method was used to determine the abundance and diversity of gut bacteria in larval intestines. The highest richness and diversity of gut bacteria were in corn-fed fifth instar larvae, whereas in sixth instar larvae, the richness and diversity were higher when larvae were fed by other crops. Firmicutes and Proteobacteria were dominant phyla in gut bacterial communities of fifth and sixth instar larvae. According to the LDA Effect Size (LEfSe) analysis, the host plants had important effects on the structure of gut bacterial communities in S. frugiperda. In the PICRUSt2 analysis, most predicted functional categories were associated with metabolism. Thus, the host plant species attacked by S. frugiperda larvae can affect their gut bacterial communities, and such changes are likely important in the adaptive evolution of S. frugiperda to host plants.
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