Jasmonate signaling drives defense responses against Alternaria alternata in chrysanthemum.

ABSTRACT:

Background

Black spot disease caused by the necrotrophic fungus Alternaria spp. is one of the most devastating diseases affecting Chrysanthemum morifolium. There is currently no effective way to prevent chrysanthemum black spot.

Results

We revealed that pre-treatment of chrysanthemum leaves with the methy jasmonate (MeJA) significantly reduces their susceptibility to Alternaria alternata. To understand how MeJA treatment induces resistance, we monitored the dynamics of metabolites and the transcriptome in leaves after MeJA treatment following A. alternata infection. JA signaling affected the resistance of plants to pathogens through cell wall modification, Ca²⁺ regulation, reactive oxygen species (ROS) regulation, mitogen-activated protein kinase cascade and hormo

SUBMITTER: Zhang S 

PROVIDER: S-EPMC10507968 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature