MATK and infection: The infection of endophyte Epichloë gansuensis can promote the host endogenous hormones content such as indole-3-acetic acid (IAA), cytokinin (CTK), gibberellin (GA), jasmonic acid (JA), salicylic acid (SA), and the expression of genes, which can alleviate the harm of abiotic stresses on the growth of host plants [70].