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Bacterial halo blight of coffee crop: aggressiveness and genetic diversity of strains

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dc.contributor.author Maciel, Karen Wolf
dc.contributor.author Destefano, Suzete Aparecida Lanza
dc.contributor.author Beriam, Luis Otavio Saggion
dc.contributor.author Almeida, Irene Maria Gatti de
dc.contributor.author Patricio, Flavia Rodrigues Alves
dc.contributor.author Rodrigues, Lucas Mateus Rivero
dc.contributor.author Guerreiro Filho, Oliveiro
dc.date.accessioned 2018-06-25T12:31:01Z
dc.date.available 2018-06-25T12:31:01Z
dc.date.issued 2018-01
dc.identifier.citation MACIEL, K. W. et al. Bacterial halo blight of coffee crop: aggressiveness and genetic diversity of strains. Bragantia, Campinas, v. 77, n. 1, p. 96-106, Jan./Mar. 2018. pt_BR
dc.identifier.issn 1678-4499
dc.identifier.uri http://dx.doi.org/10.1590/1678-4499.2016267 pt_BR
dc.identifier.uri http://www.sbicafe.ufv.br/handle/123456789/9919
dc.description.abstract Bacterial halo blight, caused by Pseudomonas syringae pv. garcae, is an important disease of coffee crop occurring in Brazil and other countries. In recent years, outbreaks of this disease have damaged several coffee crops in Brazil. Aggressiveness and genetic diversity of 25 strains of P. s. pv. garcae, obtained between the years 1958 and 2011, in 23 cities of São Paulo and Minas Gerais states, as well as three strains from Kenya were evaluated in this study. The strains were inoculated on coffee seedlings cultivar Mundo Novo, and their genetic diversity was evaluated by ERIC-PCR, REP-PCR, and their combination. All the strains were pathogenic to the coffee seedlings; the results of pathogenicity tests, in both experiments, could be divided in four aggressiviness classes (highly aggressive; aggressive; moderately aggressive and less aggressive). The Kenyan strains grouped separately from the Brazilian strains with ERIC-PCR and the combination of ERIC- and REP-PCR. The Brazilian strains could be grouped in two sub-clusters, the first including the older strains, obtained from 1958 to 1978, and the other comprising the remaining strains. With a few exceptions, strains isolated from 1997 to 2011, grouped mainly by their region of origin, were predominantly isolated from higher altitude regions, above 800 m. This probably occurred because the climatic conditions that prevail in these regions, characterized by milder temperatures and regular rainfall, are favorable for the coffee crop and for the production of high quality coffee beverage, but can be also favorable to bacterial halo blight. pt_BR
dc.format pdf pt_BR
dc.language.iso en pt_BR
dc.publisher Instituto Agronômico (IAC) pt_BR
dc.relation.ispartofseries Bragantia;v.77, n.1, p.96-106, 2018
dc.rights Open Access pt_BR
dc.subject Pseudomonas syringae pv. garcae pt_BR
dc.subject Coffea arabica pt_BR
dc.subject ERIC-PCR pt_BR
dc.subject REP-PCR pt_BR
dc.subject.classification Cafeicultura::Pragas, doenças e plantas daninhas pt_BR
dc.title Bacterial halo blight of coffee crop: aggressiveness and genetic diversity of strains pt_BR
dc.type Artigo pt_BR

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