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

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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, malondi-aldehyde 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.

Original languageEnglish (US)
Pages (from-to)376-381
Number of pages6
JournalPlanta
Volume212
Issue number3
DOIs
StatePublished - Mar 12 2001

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All Science Journal Classification (ASJC) codes

  • Genetics
  • Plant Science

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