Phytopathology (2011) 101, 1005-1012

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Maria A. Ferreira, Thomas C. Harrington, Acelino C. Alfenas and Eduardo S.G. Mizubuti (2011)
Movement of genotypes of Ceratocystis fimbriata within and among Eucalyptus plantations in Brazil
Phytopathology 101 (8), 1005-1012
Abstract: Ceratocystis wilt on eucalyptus, caused by Ceratocystis fimbriata, was first recognized in 1997 in the state of Bahia, Brazil, but is now known in five other states and in four other countries. C. fimbriata is a native, soilborne pathogen in some parts of Brazil but we hypothesized that genotypes of the pathogen have been moved among plantations in rooted cuttings collected from diseased trees and within plantations on cutting tools. We used six microsatellite markers to identify 78 genotypes of C. fimbriata among 177 isolates from individual trees in 20 eucalyptus plantations. The highest gene and genotypic diversity values were found in plantations on formerly wild Cerrado forest in Minas Gerais, suggesting that the fungus was in the soil prior to planting eucalyptus. In contrast, one or only a few genotypes were found in plantations on previous pastureland (with no woody hosts) in Bahia and São Paulo, and most of these genotypes were found in a Bahian nursery or in one of two Bahian plantations that were sources for rooted cuttings. Sources of cuttings tended to be dominated by one or a few genotypes that may have been spread within the plantation on cutting tools.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Thomas C. Harrington, Acelino C. Alfenas, Eduardo S.G. Mizubuti

Research topic(s) for pests/diseases/weeds:
molecular biology - genes

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Ceratocystis fimbriata Eucalypt (Eucalyptus) Brazil (south)
Ceratocystis fimbriata Eucalypt (Eucalyptus) Brazil (NE)