Characterization of Botrytis cinerea populations associated with treated and untreated cv. Moscato vineyards

Three Botrytis cinereo populations, isolated from three vineyards, one untreated and two treated twice year, respectively, with fenhexamid or cyprodinil+ fludioxonil, were investigated to evaluate the effect of repeated fungicide treatments on the presence and distribution of the transposons Boty an...

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Bibliographic Details
Published in:Phytopathologia mediterranea 2014-04, Vol.53 (1), p.108-123
Main Authors: VERCESI, Annamaria, LAURA TOFFOLATTI, Silvia, VENTURINI, Giovanni, CAMPIA, Paola, SCAGNELLI, Sandra
Format: Article
Language:English
Subjects:
Botrytis
Botrytis cinerea
Distribution patterns
Dormancy
Fungicides
Genetic transposition
grey mould
Pathogens
Phenology
phenotype
Phytopathology
Plant diseases
Population number
RESEARCH PAPERS
transposable elements
Vineyards
Virulence
Vitis vinifera
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Summary:Three Botrytis cinereo populations, isolated from three vineyards, one untreated and two treated twice year, respectively, with fenhexamid or cyprodinil+ fludioxonil, were investigated to evaluate the effect of repeated fungicide treatments on the presence and distribution of the transposons Boty and Flipper, and on the phenotypic traits of each pathogen community. The vacwna individuals lacking the two transposons represented the majority of the 390 B. cinerea isolates followed by transposa strains containing Boty and Flipper, while the remaining 67 harboured respectively only Boty (60) or Flipper (7). This research has demonstrated that fungicide application did not influence the transposon distribution patterns, the sensitivity towards various botryticides, or the growth rate of the isolates belonging to the three different populations, but did induced overall reduction of the population size and selected isolates characterized by an enhanced pathogenicity, especially on Vitis vinifera leaves.
ISSN:0031-9465
1593-2095
DOI:10.14601/Phytopathol_Mediterr-12367