Emamectin benzoate-induced stress significantly affects the gut microbiome of adult Zeugodacus cucurbitae.

Ecotoxicol Environ Saf

National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya 572019, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China. Electronic address:

Published: November 2024

AI Article Synopsis

  • * Using advanced sequencing techniques, researchers found that the major gut bacterial communities were from the phyla Proteobacteria and Bacteroidetes, with notable genera such as Providencia and Klebsiella.
  • * The presence of stress from the insecticide led to a decrease in certain bacteria (Citrobacter, Enterobacter, Klebsiella) and an increase in others (Providencia, Pectobacterium), indicating that insecticides significantly disrupt the gut microbiota of Z. cucurbitae.

Article Abstract

The detoxification mechanisms in insects, which are triggered by insecticides, alter the diversity of their intestinal microorganisms. Emamectin benzoate is an insecticide used to control Zeugodacus cucurbitae (Coquillett), a globally significant pest. In this study, high-throughput sequencing, traditional isolation and culture methods, and single bacterial 16S rDNA sequencing were used to analyze the diversity and functional predictions of intestinal microbial communities in Z. cucurbitae adults exposed to emamectin benzoate. The results showed that the intestinal microorganisms of Z. cucurbitae on Cucumis sativus and Benincasa hispida var. chieh-qua were primarily composed of the phyla Proteobacteria and Bacteroidetes and genera Providencia, Enterobacter, Citrobacter, and Klebsiella. The relative abundances of Citrobacter, Enterobacter, Klebsiella, and Raoultella decreased with the induced stress, whereas those of Providencia and Pectobacterium increased. Diversity analysis revealed significant differences in the midgut flora of Z. cucurbitae before and after stress induction with emamectin benzoate.

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Source
http://dx.doi.org/10.1016/j.ecoenv.2024.117312DOI Listing

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