European Journal of Plant Pathology

, Volume 126, Issue 4, pp 509–515 | Cite as

Detection and characterization of benzimidazole resistance of Botrytis cinerea in greenhouse vegetables



From 2003 to 2006, a total of 426 single-conidial isolates of B. cinerea collected from greenhouse vegetables in China were characterized for resistance to benzimidazole fungicides and diethofencarb according to inhibition of mycelial growth. Rapid development of double-resistance to benzimidazoles and diethofencarb was observed. Three types of benzimidazole-resistant isolates, Ben R1, Ben R2 and Ben R3 were detected. A new phenotype, Ben R3, which showed low level of resistance to benzimidazole fungicides and resistance to diethofencarb, was detected with frequencies of 6.8%, 10.0%, 13.2% and 12.4% from 2003 to 2006, respectively. Further studies indicated that Ben R3 was caused by a point mutation from GAG in sensitive(S) isolates to GTG at codon 198 in the β-tubulin gene, predicted to cause a change from glutamic acid to valine. Ben R3 isolates had comparable growth, sporulation and pathogenicity ability as isolates of other phenotypes but were more sensitive at lower temperatures.


Botrytis cinerea Vegetable grey mould Benzimidazole resistance β-tubulin gene Double resistance 



This research was partially supported by grant no. Y3080042 of Zhejiang Natural Science Foundation and grant no. 2351000971 of Zhejiang Forest College funding.


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Copyright information

© KNPV 2009

Authors and Affiliations

  1. 1.Department of Crop ProtectionZhejiang Forest CollegeHangzhouChina
  2. 2.College of Agriculture and BiotechnologyZhejiang UniversityHangzhouChina

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