Systemic Activation of the Antioxidant System by Root Priming With Non-Pathogenic Fusarium oxysporum in Flax Infected With Pathogenic Fusarium oxysporum.

ABSTRACT: Plants rely on specialised adaptive mechanisms to enhance resistance against environmental stress. One such mechanism, priming, enables faster and stronger defence responses upon subsequent stress exposure. This study examines whether the non-pathogenic Fusarium oxysporum Fo47 primes flax by colonising roots and activating antioxidant defences. Flax plants primed with Fo47 and those treated with both Fo47 and the pathogenic strain F. oxysporum Foln were analysed for fungal colonisation, PR genes expression and antioxidant systems: enzymatic (ROS metabolism-related genes expression, catalase and superoxide dismutase activity, hydrogen peroxide and superoxide anion levels) and non-enzymatic (phenolic compound content and antioxidant potential). The results demonstrate that Fo47 colonises hos

SUBMITTER: Burgberger M 

PROVIDER: S-EPMC12784107 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature