Aluminum induces cross-resistance of potato to Phytophthora infestans.

ABSTRACT: The phenomenon of cross-resistance allows plants to acquire resistance to a broad range of stresses after previous exposure to one specific factor. Although this stress-response relationship has been known for decades, the sequence of events that underpin cross-resistance remains unknown. Our experiments revealed that susceptible potato (Solanum tuberosum L. cv. Bintje) undergoing aluminum (Al) stress at the root level showed enhanced defense responses correlated with reduced disease symptoms after leaf inoculation with Phytophthora infestans. The protection capacity of Al to subsequent stress was associated with the local accumulation of H2O2 in roots and systemic activation of salicylic acid (SA) and nitric oxide (NO) dependent pathways. The most crucial Al-mediated changes involved codi

SUBMITTER: Arasimowicz-Jelonek M 

PROVIDER: S-EPMC3928512 | biostudies-literature | 2014 Mar

REPOSITORIES: biostudies-literature