Multi-Omics Analysis Identifies the Key Defence Pathways in Chinese Cabbage Responding to Black Spot Disease.

ABSTRACT:

Background

Black spot disease severely constrains Chinese cabbage production.

Methods

To elucidate the defence mechanisms underlying this response, transcriptomic and metabolomic profiles were analysed in leaves of the Chinese cabbage line 904B at 24 h post-inoculation (hpi) with Alternaria brassicicola. In parallel, gene silencing and overexpression were conducted for BraPBL, an RLCK family member in Chinese cabbage.

Results

The Chinese cabbage line 904B exhibited marked suppression of cytokinin and auxin signalling, coupled with enhanced expression of genes involved in ethylene and jasmonic acid signalling. Multiple secondary metabolites exhibited differential changes, specifically the sterol compound 4,4-dimethyl-5alpha-cholest-7-en-3beta-ol was signi

SUBMITTER: Yan W 

PROVIDER: S-EPMC12840714 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature