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Markers for oxidative stress associated with soft rots in French beans (Phaseolus vulgaris) infected by Botrytis cinerea

  • I. Muckenschnabel
  • , B. Williamson
  • , B.A. Goodman
  • , G.D. Lyon
  • , D. Stewart
  • , N. Deighton

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The role of active oxygen species has been studied in spreading soft-rot lesions caused by the necrotrophic fungal pathogen Botrytis cinerea Pers.:Fr. in leaves of four genotypes of French bean (Phaseolus vulgaris L.). Large increases were observed for the aldehydic end-products of oxidative damage, malondialdehyde and 4-hydroxy-2-nonenal, as a result of infection in each of the genotypes studied. Similar increases were found in a stable free radical and g=4.27 Fe(III) signals, but not Mn(II) signals, in electron paramagnetic resonance spectra. These changes were accompanied by large decreases in ascorbic acid levels, with changes in the antioxidant glutathione being genotype dependent.
    © Springer-Verlag
    Original languageEnglish
    Pages (from-to)376-381
    Number of pages6
    JournalPlanta
    Volume212
    Issue number3
    DOIs
    Publication statusPublished - 2001

    Keywords

    • antioxidant
    • botrytis
    • free radicals
    • lipid peroxidation
    • oxidative stress
    • phaseolus

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