Reduced Sensitivity in Monilinia fructicola to Propiconazole in Georgia and Implications for Disease Management.
- G. Schnabel, P. Bryson, W. Bridges, P. Brannen
- Biology, MedicinePlant Disease
- 1 September 2004
The results suggest that a shift toward reduced sensitivity has developed in some M. fructicola populations from Georgia, and that isolates with reduced sensitivity to propiconazole are more difficult to control in the field.
The 14alpha-Demethylasse(CYP51A1) Gene is Overexpressed in Venturia inaequalis Strains Resistant to Myclobutanil.
- G. Schnabel, A. Jones
- BiologyPhytopathology
- 2001
The results suggest that overexpression of the target-site CYP51A1 gene is an important mechanism of resistance in some field resistant strains of V. inaequalis, but other mechanisms of resistance also appear to exist.
Resistance to Pyraclostrobin and Boscalid in Botrytis cinerea Isolates from Strawberry Fields in the Carolinas.
- D. Fernández-Ortuño, Fengping Chen, G. Schnabel
- BiologyPlant Disease
- 10 July 2012
Resistance to QoI fungicides and dual resistance toQoI and SDHI fungicides is common in B. cinerea fields in the Carolinas, and resistant strains were more frequent in locations heavily sprayed with Qoi and SD HI fungicides.
Monilinia Species Causing Brown Rot of Peach in China
- Mengjun Hu, K. Cox, G. Schnabel, C. Luo
- Biology, MedicinePLoS ONE
- 27 September 2011
Morphological characteristics, including spore size, colony morphology, lesion growth rate, and sporulation, support the phylogenetic evidence suggesting the designation of M. yunnanensis as a new species, causing brown rot of peach in China.
Paralogous cyp51 genes in Fusarium graminearum mediate differential sensitivity to sterol demethylation inhibitors.
- Xin Liu, Fangwei Yu, G. Schnabel, Jianbing Wu, Zhengyi Wang, Zhonghua Ma
- BiologyFungal Genetics and Biology
- 1 February 2011
The Cytochrome P450 Lanosterol 14α-Demethylase Gene Is a Demethylation Inhibitor Fungicide Resistance Determinant in Monilinia fructicola Field Isolates from Georgia
- C. Luo, G. Schnabel
- Medicine, BiologyApplied and Environmental Microbiology
- 16 November 2007
The results strongly suggest that overexpression of the MfCYP51 gene is an important mechanism in conferring DMI fungicide resistance in M. fructicola field isolates from Georgia and that this overeexpression is correlated with Mona located upstream of theMfCyp51 gene.
Baseline Sensitivity of Monilinia fructicola from China to the DMI Fungicide SYP-Z048 and Analysis of DMI-Resistant Mutants.
- F. Chen, J. Fan, T. Zhou, X. L. Liu, J. Liu, G. Schnabel
- Biology, MedicinePlant Disease
- 8 February 2012
The inability of M. fructicola to generate spontaneous DMI-resistant mutants coupled with reduced fitness of Y136F mutants can explain why this target site mutation has not yet emerged as a DMI fungicide resistance determinant in Monilinia spp.
Characterization of Ribosomal DNA from Venturia inaequalis and Its Phylogenetic Relationship to rDNA from Other Tree-Fruit Venturia Species.
- G. Schnabel, E. Schnabel, A. Jones
- BiologyPhytopathology
- 1999
The described intron and ITS1 alleles in V. inaequalis provide genetic markers for subdividing populations of V. asperata and the ITS1-5.8S-ITS2 sequences are valuable in determining the relationship of the species from tree-fruit crops with other Venturia species.
Resistance to Cyprodinil and Lack of Fludioxonil Resistance in Botrytis cinerea Isolates from Strawberry in North and South Carolina.
- D. Fernández-Ortuño, Fengping Chen, G. Schnabel
- Biology, MedicinePlant Disease
- 2013
Cross resistance between the two AP fungicides cyprodinil and pyrimethanil was demonstrated, and isolates that were characterized in vitro as moderately resistant or resistant were equivalent in pathogenicity on fruit sprayed with pyrimETHanil, suggesting that the in vitro distinction of moderately resistant and resistant isolates is of little if any field relevance.
Occurrence and Detection of the DMI Resistance-Associated Genetic Element 'Mona' in Monilinia fructicola.
- C. Luo, K. Cox, A. Amiri, G. Schnabel
- Biology, MedicinePlant Disease
- 11 June 2008
This study confirms that the Mona element is strongly linked to the DMI-resistance phenotype and reveals that overexpression of the MfCYP51 gene is a common DMI fungicide resistance mechanism in M. fructicola, not only in Georgia but throughout the eastern United States.
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