Changing light promotes isoflavone biosynthesis in soybean pods and enhances their resistance to mildew infection
Jasmonic acid
Shading
Intercropping
DOI:
10.1111/pce.14128
Publication Date:
2021-06-12T15:18:42Z
AUTHORS (18)
ABSTRACT
Mildew severely reduces soybean yield and quality, pods are the first line of defence against pathogens. Maize-soybean intercropping (MSI) mildew incidence on pods; however, mechanism remains unclear. Changing light (CL) from maize shading is most important environmental feature in MSI. We hypothesized that CL affects isoflavone accumulation pods, affecting their disease resistance. In present study, treatments were applied to plants during different developmental stages according various environments under Chlorophyll fluorescence imaging (CFI) classical evaluation methods confirmed CL, especially vegetative stage (VS), enhanced pod resistance mildew. Further metabolomic analyses exogenous jasmonic acid (JA) biosynthesis inhibitor experiments revealed relationship between JA biosynthesis, which had a synergistic effect CL-treated VS promoted constitutive isoflavones upstream pathway, such as aglycones glycosides, pods. When infects endogenous signalling stimulated downstream inducible malonyl (MIF) glyceollin improve
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