Phytoparasitica (2009) 37, 351-359

Chuan-Qing Zhang, Jia-li Hu, Fang-ling Wei and Guo-nian Zhu (2009)
Evolution of resistance to different classes of fungicides in Botrytis cinerea from greenhouse vegetables in eastern China
Phytoparasitica 37 (4), 351-359
Abstract: Between 2003 and 2005, 337 isolates of Botrytis cinerea collected from greenhouse vegetables were characterized for resistance to fungicides. A low level of chlorothalonil resistance was detected and in these resistant isolates there was cross-resistance to captan and thiram. To the best of our knowledge, this is the first report of chlorothalonil resistance in B. cinerea from vegetables in China. The sub-population of B. cinerea highly resistant to benzimidazoles developed quickly during the years 2003 to 2005. Rapid spread of double resistance to benzimidazoles and diethofencarb was also observed. Resistance to dicarboximides was of low-level character and no highly resistant isolates were detected. In contrast, emergence of resistance to pyrimethanil, the only anilinopyrimidine fungicide used in China at present, was detected in 2003 just 3 years after pyrimethanil introduction. Pyrimethanil-resistant isolates demonstrated fitness comparable with that of wild sensitive isolates. These results suggest that pyrimethanil has a high risk of leading to resistance development in B. cinerea in greenhouse vegetables.
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Link to article at publishers website
Database assignments for author(s): Chuan-Qing Zhang

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Botrytis cinerea		China (south)
	Botrytis cinerea		China (NE)