ArticleFrontiers in microbiology2015
Heterologous expression of the Monilinia fructicola CYP51 (MfCYP51) gene in Pichia pastoris confirms the mode of action of the novel fungicide, SYP-Z048.
Article in Frontiers in microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 12 citations in OpenAlex.
- Molecular characterization and overexpression of the difenoconazole resistance gene CYP51 in Lasiodiplodia theobromae field isolates.Scientific reports · 2021Article
- DMI-Fungicide Resistance inMicroorganisms · 2021Article
- Article
- Two Point Mutations on CYP51 Combined With Induced Expression of the Target Gene Appeared to Mediate Pyrisoxazole Resistance inFrontiers in microbiology · 2020Article
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7 authors at 2 institutions in 1 country.
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Abstract
The novel agricultural fungicide 3-[5-(4-chlorophenyl)-2,3-dimethyl-3-isoxazolidinyl] pyridine (SYP-Z048) developed by China Shenyang Research Institute of Chemical Industry has been confirmed to be an ergosterol biosynthesis inhibitor (EBI). Previous studies have shown that EBIs target the proteins from a range of genes, including CYP51, ERG2 and/or ERG24, and ERG27, which are involved in the ergosterol biosynthesis pathway. In the current study the ERG2, ERG24, and ERG27 genes were cloned from wild type and resistant mutants of Monilinia fructicola in an attempt to clarify the target site of SYP-Z048. Comparative analysis of the deduced aa sequence of these genes, as well as CYP51, revealed several point mutations that resulted in amino acid variation among the sensitive and resistant isolates. However, sensitivity assays indicated that only one, the substitution of phenylalanine (F) for the tyrosine (Y) at 136 in CYP51, was correlated with reduced sensitivity to SYP-Z048. Heterologous expression of MfCYP51-136Y (MfCYP136Y) and MfCYP51-136F (MfCYP136F) in Pichia pastoris revealed that MfCYP136F significantly reduced sensitivity to SYP-Z048, increasing the average EC50 of the transformants 11-fold relative to those carrying MfCYP136Y. However, neither the additional copy of MfCYP136Y nor multiple copies of MfCYP136F were found to reduce sensitivity relative to the empty vector control or single copy transformants, respectively. Molecular docking experiments using SYP-Z048 with HsCYP145Y and the mutated version HsCYP145F as substitutes for MfCYP136Y and MfCYP136F, respectively, indicated that the reduced affinity of HsCYP145F for SYP-Z048 resulted from the loss of a hydrogen bond between the fungicide and the active site. Taken together these results indicate that MfCYP51 is the major target site of SYP-Z048 in M. fructicola, which has important implications for the resistance management of this fungicide in the field.
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