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Plant Pathology (2004) 53, 635-642
K.I. Ansari, N. Palacios, C. Araya, T. Langin, D. Egan and F.M. Doohan (2004)
Pathogenic and genetic variability among Colletotrichum lindemuthianum isolates of different geographic origins
Plant Pathology 53 (5), 635-642
Abstract: The pathogenic and genetic diversity of Colletotrichum lindemuthianum isolates collected from a total of 10 Central and South American, European and African countries were characterized using common bean differential cultivar pathogenicity tests and amplified fragment length polymorphism (AFLP) analysis. On the basis of pathogenicity tests, 74 isolates were attributed to 30 different pathogenic races using the CIAT-defined binary race-classification system. Twenty-one races were restricted geographically, being exclusive to different countries. Race 9 was the most widespread, being detected in four different countries. Cluster analysis of consensus AFLP data generated using three selective AFLP primer combinations grouped 86 isolates (including the 74 subjected to pathogenicity tests) into three clusters (with one isolate as an outlier). This analysis showed that the majority of South and Central American isolates were divided among two clusters, and that the limited number of European and African isolates used in this study were genetically most similar to Central American isolates. Overall, the results of this research showed some associations between the genetic diversity of the isolates and their country of origin, but not between genetic diversity and race classification of isolates.
(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): Khairul I. Ansari, Fiona M. Doohan
Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution