Geographical Differentiation of the Population of Xanthomonas axonopodis pv. manihotis in Colombia.

Applied and Environmental Microbiology
Silvia Restrepo, V Verdier

Abstract

Analyses of DNA polymorphism and virulence variation were used to evaluate the population structure of Xanthomonas axonopodis pv. manihotis, the pathogen causing cassava bacterial blight in Colombia. We collected strains from the major cassava-growing regions which can be grouped into different edaphoclimatic zones (ECZs) according to environmental conditions, production constraints, and economic parameters. DNA polymorphism was assessed by a restriction fragment length polymorphism analysis, using an X. axonopodis pv. manihotis plasmid DNA sequence (pthB) as a probe to evaluate the genetic relatedness among 189 Colombian strains. The sampling intensity permitted the estimation of genetic differentiation within and among ECZs, sites, and fields and even within an individual plant. A multiple correspondence analysis indicated that the Colombian X. axonopodis pv. manihotis population showed a high degree of diversity relative to X. axonopodis pv. manihotis populations studied previously, and the entire collection was grouped into seven clusters. A general correlation was observed between the clusters and the geographical origin of the strains, as each cluster was largely composed of strains from the same ECZ. Representative strai...Continue Reading

References

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Citations

Dec 7, 2007·Genome Génome / Conseil National De Recherches Canada·Camilo E LópezValérie Verdier
Jan 9, 2004·Applied and Environmental Microbiology·Silvia RestrepoValérie Verdier
Sep 14, 2016·Frontiers in Plant Science·Hernán CeballosClair H Hershey
Nov 29, 2002·Microbiology and Molecular Biology Reviews : MMBR·Cindy E MorrisMarc Troussellier
Dec 17, 2002·Molecular Plant-microbe Interactions : MPMI·Katrin JakobJoy Bergelson
Jun 22, 2015·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Hernán CeballosClair H Hershey
Jun 8, 2012·Molecular Plant Pathology·John MansfieldGary D Foster
Jun 16, 2012·Proceedings of the National Academy of Sciences of the United States of America·Rebecca BartBrian J Staskawicz

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