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Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
Address:Chaoyang District No. 1 Beichen West Road, No. 5 hospital,Beijing City,100101, China
Your Position :Home->Past Journals Catalog->2023年60 No.6

Effects of Beauveria bassiana-maize symbionts on the growth and development of Ostrinia furnacalis
Author of the article:XIE Min, LU Yang, ZHANG Yun-Yue, LI Qi-Yun, SUI Li, ZHANG Zheng-Kun
Author's Workplace:Institute of Plant Protection, Jilin Academy of Agricultural Science
Key Words:entomopathogenic fungi; endophytic; insect resistance; insect defense enzyme; resistance gene

Abstract  [Objectives]  To clarify the effects of Beauveria bassiana−maize symbionts (hereafter, symbionts) on the growth and development of the Asian corn borer (Ostrinia furnacalis). [Methods] Symbionts were constructed using the root-irrigation method and fed to O. furnacalis larvae, after which the food consumption, body weight and cumulative survival rate, of larvae were measured and compared. The effect of symbionts on the expression of protective enzymes and key defensive genes was also analyzed, and the ecological mechanisms underlying the effects of symbionts on larvae were clarified. [Results]  There were significant differences in the consumption by larvae of symbionts compared to uninfected plants. The body weight, cumulative survival rate and protective enzyme activities (SOD, POD and CAT) of larvae decreased after feeding on symbionts, expression of immune-related genes was up-regulated, and expression of resistance-related genes was down-regulated. [Conclusion]  Maize colonized by B. bassiana can inhibit the feeding and growth of O. furnacalis larvae. B. bassiana−maize symbionts can regulate insect development by adjusting the protective enzyme activity of insects, and the expression of genes involved in toxin resistance.

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