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- W2068878083 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 coding of NO message in an enhanced S-nitrosothiol formation in leaves tuned with an abundant SNOs accumulation in the main vein of leaves. Al-induced distal NO generation was correlated with the overexpression of PR-2 and PR-3 at both mRNA and protein activity levels. In turn, after contact with a pathogen we observed early up-regulation of SA-mediated defense genes, e.g. PR1, PR-2, PR-3 and PAL, and subsequent disease limitation. Taken together Al exposure induced distal changes in the biochemical stress imprint, facilitating more effective responses to a subsequent pathogen attack." @default.
- W2068878083 created "2016-06-24" @default.
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- W2068878083 date "2013-12-18" @default.
- W2068878083 modified "2023-09-27" @default.
- W2068878083 title "Aluminum induces cross-resistance of potato to Phytophthora infestans" @default.
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- W2068878083 doi "https://doi.org/10.1007/s00425-013-2008-8" @default.
- W2068878083 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3928512" @default.
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