Exogenous methyl jasmonate enhances maize resistance by modulating secondary metabolites and suppressing Spodoptera frugiperda performance - Wenjing Li; Qingqing Ju; Ling Wang; Nina Yang; Haichen Yin; Shengbo Cong; Huaiheng Wu; Li Xue; Zhenbiao Jiao; Dong Xu; Peng Wan (Crop Protection, 2026)