Dehydroascorbate induces plant resistance in rice against root-knot nematode Meloidogyne graminicola.

ABSTRACT: Ascorbic acid (AsA) is an important antioxidant in plants and regulates various physiological processes. In this study, we show that exogenous treatments with the oxidized form of AsA, that is, dehydroascorbate (DHA), activates induced systemic resistance in rice against the root-knot nematode Meloidogyne graminicola, and investigate the molecular and biochemical mechanisms underlying this phenotype. Detailed transcriptome analysis on roots of rice plants showed an early and robust transcriptional response on foliar DHA treatment, with induction of several genes related to plant stress responses, immunity, antioxidant activity, and secondary metabolism already at 1 day after treatment. Quantitative and qualitative evaluation of H₂ O₂ levels confirmed the appearance of

SUBMITTER: Chavan SN 

PROVIDER: S-EPMC9366072 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature