Resistance to diethofencarb (NPC) in benomyl‐resistant field isolates of Botrytis cinerea

Publisher Website
Google Scholar
Abstract
Based on the ‘negative cross‐resistance’ phenomenon between N‐phenylcarbamates and benzimidazole fungicides, the fungicidal mixture of carbendazim + diethofencarb (MBC + NPC) was introduced, to control Botrytis cinerea phenotypes which are either sensitive to benzimidazoles and resistant to NPC (wild‐type: BenS NPCR). or resistant to benzimidazoles and sensitive to NPC(BenR NPCS). At one out of four sites where the MBC + NPC mixture was used in commercial cucumber greenhouses, grey mould control failed and a new phenotype of B. cinerea was found. The new phenotype was resistant to benzimidazoles, as was 100% of the population screened in the four sites, but retained resistance to NPC. Accordingly, the new phenotype was designated BenR NPCR. It was pathogenic on cucumber seedlings.

This publication has 11 references indexed in Scilit: