Catalase activity and sensitivity to the fungicides, iprodione and fludioxonil in Botrytis cinerea

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Abstract

Specific activities of the enzyme catalase were compared with iprodione and fludioxonil sensitivity in 17 field isolates of Botrytis cinerea. Fludioxonil proved to be a potent inhibitor of both iprodione-sensitive and -resistant isolates. Catalase activity was found to be positively correlated with iprodione resistance (r = 0.77, P < 0.001) confirming that dicarboximide resistance is mediated by enhanced oxidative protective enzymes. No such correlation was found with fludioxonil suggesting that resistance at the biochemical level differs for the two fungicide groups.

Original languageEnglish
Pages (from-to)335-338
Number of pages4
JournalLetters in Applied Microbiology
Volume22
Issue number5
DOIs
Publication statusPublished - 01 Jan 1996

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