Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/42969
Title: Characterization of Phytophthora cinnamomi from common walnut in Southern Europe environment
Authors: Vitale, Salvatore
Scotton, Michele
Vettraino, Anna Maria 
Vannini, Andrea 
Haegi, Anita
Luongo, Laura
Scarpari, Marzia
Belisario, Alessandra
Journal: FOREST PATHOLOGY 
Issue Date: 2019
Abstract: 
© 2018 Blackwell Verlag GmbH Forty-eight isolates of Phytophthora cinnamomi obtained from common walnut were analysed according to their variability in growth at different temperatures, virulence, sensitivity to metalaxyl and in genomic DNA. Isolates were obtained from commercial common walnut orchards located in northern Italy and in southern France. Inter-simple sequence repeat (ISSR) were analysed for the 49 isolates, 43 of which were Italian, 6 French; an isolate of the same species obtained from Viburnum spp. was used as an outgroup. ANOVA on phenotypic characters showed a significant impact of the geographic location of the orchard on isolate variability in terms of reaction to temperatures and aggressiveness. In turn, clustering obtained with UPGMA analysis on genetic data was almost exclusively dependant on isolate variability, nevertheless the 48 isolates seem to share a common variability that differentiates the group from the isolate from Viburnum spp. Correlation between phenotypic and genetic traits was not statistically significant. In conclusion, phenotypic variability like virulence seemed to be conditioned from geographic origin while the genetic variability of P. cinnamomi isolates from walnut was associated to the single genotype.
URI: http://hdl.handle.net/2067/42969
ISSN: 1439-0329
DOI: 10.1111/efp.12477
Rights: Attribution-NonCommercial-NoDerivs 3.0 United States
Appears in Collections:A1. Articolo in rivista

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