Strigolactones Modulate Salicylic Acid-Mediated Disease Resistance in Arabidopsis thaliana.

ABSTRACT: Strigolactones are low-molecular-weight phytohormones that play several roles in plants, such as regulation of shoot branching and interactions with arbuscular mycorrhizal fungi and parasitic weeds. Recently, strigolactones have been shown to be involved in plant responses to abiotic and biotic stress conditions. Herein, we analyzed the effects of strigolactones on systemic acquired resistance induced through salicylic acid-mediated signaling. We observed that the systemic acquired resistance inducer enhanced disease resistance in strigolactone-signaling and biosynthesis-deficient mutants. However, the amount of endogenous salicylic acid and the expression levels of salicylic acid-responsive genes were lower in strigolactone signaling-deficient max2 mutants than in wildtype plants.

SUBMITTER: Kusajima M 

PROVIDER: S-EPMC9101170 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature