Pest management science · 2026
Gut microbiota assists Streltzoviella insularis to degrade secondary metabolites of Fraxinus pennsylvanica.
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Li Ya-Xuan, Ge Si-Xun, Zong Shi-Xiang
Аннотация
BACKGROUND: Streltzoviella insularis is a major woodboring pest in China with a wide host range. Fraxinus pennsylvanica is one of the most severely affected tree species in northern urban areas. Previous studies have indicated that insect gut microbiota may enhance host plant adaptability. However, limited information is available on the diversity, community structure, and functional roles of the gut microbial community of S. insularis. In this study, we characterized the gut microbiota composition and diversity of S. insularis and investigated their role in degrading kaempferol, a defensive secondary metabolite of F. pennsylvanica.
RESULTS: The results revealed that dominant bacterial communities consisted of Enterococcus, Weissella, Serratia, and Achromobacter, while fungal communities were less diverse and dominated by Candida. Compared with the control group, larvae fed with both kaempferol and antibiotics exhibited significant shifts in gut microbial structure and a markedly increased kaempferol content in frass, indicating that altered microbiota composition is associated with reduced kaempferol degradation capacity.
CONCLUSION: These findings suggest that gut microbiota are involved in kaempferol degradation in S. insularis, highlighting their critical role in enhancing insect adaptability to host plant defenses. © 2026 Society of Chemical Industry.
RESULTS: The results revealed that dominant bacterial communities consisted of Enterococcus, Weissella, Serratia, and Achromobacter, while fungal communities were less diverse and dominated by Candida. Compared with the control group, larvae fed with both kaempferol and antibiotics exhibited significant shifts in gut microbial structure and a markedly increased kaempferol content in frass, indicating that altered microbiota composition is associated with reduced kaempferol degradation capacity.
CONCLUSION: These findings suggest that gut microbiota are involved in kaempferol degradation in S. insularis, highlighting their critical role in enhancing insect adaptability to host plant defenses. © 2026 Society of Chemical Industry.