Evaluation of sublethal and transgenerational effects of sulfoxaflor on Aphis gossypii via life table parameters and 16S rRNA sequencing

文献类型： 外文期刊

第一作者： Shang, Jiao

作者： Shang, Jiao;Ji, Ji-Chao;Luo, Jun-Yu;Cui, Jin-Jie;Zhu, Xiang-Zhen;Wang, Li;Li, Dong-Yang;Zhang, Kai-Xin;Gao, Xue-Ke;Wu, Chang-Cai;Niu, Lin;Yao, Yong-Sheng

作者机构：

关键词： sulfoxaflor; Aphis gossypii; hormesis; sublethal effects; transgenerational effects; endosymbiont bacterium

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：3.75； 五年影响因子：3.861 ）

ISSN： 1526-498X

年卷期：

页码：

收录情况： SCI

摘要： BACKGROUND Aphis gossypii, a polyphagous and recurrent pest induced by pesticides, causes tremendous loss crop yields each year. Previous studies on the mechanism of pesticide-induced sublethal effects mainly focus on the gene level. The symbiotic bacteria are also important participants of this mechanism, but their roles in hormesis are still unclear. RESULTS In this study, life table parameters and 16S rRNA sequencing were applied to evaluate the sublethal and transgenerational effects of sulfoxaflor on adult A. gossypii after 24-h LC20 (6.96 mg L-1) concentration exposure. The results indicated that the LC20 of sulfoxaflor significantly reduced the finite rate of increase (lambda) and net reproductive rate (R-0) of parent generation (G0), and significantly increased mean generation time (T) of G1 and G2, but not of G3 and G4. Both reproductive period and fecundity of G1 and G2 were significantly higher than those of the control. Furthermore, our sequencing data revealed that more than 95% bacterial communities were dominated by the phylum Proteobacteria, in which the maximum proportion genus was the primary symbiont Buchnera and the facultative symbiont Arsenophonus. Compared to those of the control, the abundance and composition of symbiotic bacteria of A. gossypii for three successive generations (G0-G2) were changed after G0 A. gossypii was exposed to sulfoxaflor: the diversity of the bacterial community was decreased, but the abundance of Buchnera was increased (G0), while the abundance of Arsenophonus was decreased. Contrary to G0, G1 and G2 cotton aphid exhibited an increased relative abundance of Arsenophonus in the sublethal treatment group. CONCLUSION Taken together, our results provide an insight into the interactions among pesticide resistance, aphids, and symbionts, which will eventually help to better manage the resurgence of A. gossypii.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序