Abstract

TERRONES-SALGADO, José et al. Botrytis cinerea causing gray mold in blackberry fruit in Mexico. Rev. mex. fitopatol [online]. 2019, vol.37, n.3, pp.365-382.  Epub Sep 30, 2020. ISSN 2007-8080.  https://doi.org/10.18781/r.mex.fit.1906-1.

Blackberry (Rubus sp.) is a fruit attacked by the fungus genera Botrytis. In Mexico, it is unknown which species are associated with the gray mold symptoms. This research aimed to identify the Botrytis species associated with blackberry. In November-December of 2016, sampling was carried out in 17 blackberry production regions in Mexico. Fruits with gray mold symptoms were collected, from which fungi were isolated and purified. Two hundred and eleven isolates were obtained using the monosporic method. Isolates clustered in 21 groups based on a multivariate analysis using morphometric, pathogenic and cultural data. For each group, one isolate was selected for molecular characterization. DNA was extracted using AP method, subsequently; polymerase chain reactions of internal transcribed spacer (ITS) were performed using the ITS1 and ITS4 primers. The PCR products were sequenced in both directions with the Sanger method. Based on morphometric, pathogenic and cultural data, and the analysis of ITS sequences, we conclude that the isolates corresponding to Botrytis cinerea.

Keywords : PCR; sequences analysis; pathogenicity; characterization..

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