The invasive weed can form a positive symbiotic relationship with native arbuscular mycorrhizal fungi (AMF) to promote its invasion ability. However, the function of AMF during the feeding of in was poorly understand. This study aimed to investigate the effects of two dominant AMF () on in response to the feeding of the generalist herbivore . The results showed that infestation could significantly reduce the biomass, nutrient and proline contents , and increase the antioxidant enzyme activities, defense hormone and secondary metabolite contents of the weed. Compared with the infested , inoculation . . could significantly promote the growth ability and enhanced the resistance of to infestation, and the aboveground biomass of increased by 317.21% and 114.73%, the root biomass increased by 347.33% and 120.58%, the polyphenol oxidase activity heightened by 57.85% and 12.62%, the jasmonic acid content raised by 13.49% and 4.92%, the flavonoid content increased by 27.29% and 11.92%, respectively. The survival rate of and density of nymphs were significantly inhibited by AMF inoculation, and the effect of was significantly greater than that of . This study provides clarified evidence that AMF in the rhizosphere of are effective in the development of tolerance and chemical defense under the feeding pressure of insect herbivory, and offer references for the management of the from the perspective of soil microorganisms.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9618805 | PMC |
| http://dx.doi.org/10.3389/fpls.2022.1015947 | DOI Listing |
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