Genetic Structure of Acetobacter diazotrophicus Populations and Identification of a New Genetically Distant Group.

Applied and Environmental Microbiology
J Caballero-MelladoE Martinez-Romero

Abstract

A total of 55 isolates of Acetobacter diazotrophicus recovered from diverse sucrose-rich host plants and from mealybugs associated with sugarcane plants were characterized by the electrophoretic mobilities of 12 metabolic enzymes. We identified seven different electrophoretic types (ETs), six of which are closely related within a genetic distance of 0.195 and exhibit high DNA-DNA homology. The seventh ET was largely divergent, separated at a genetic distance of 0.53, and had only 54% DNA homology to the reference strain. Strains corresponding to ET 7 could represent a distinct nitrogen-fixing species of the genus Acetobacter. More genetic diversity was found in isolates from Brazil than in those from Mexico, probably due to the very different crop nitrogen fertilization levels used.

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Citations

Jan 11, 2011·International Journal of Systematic and Evolutionary Microbiology·Iti GontiaBhavanath Jha
May 28, 2002·Canadian Journal of Microbiology·Paulina EstradaJesus Caballero-Mellado
Aug 12, 2006·International Journal of Systematic and Evolutionary Microbiology·Debasree Dutta, Ratan Gachhui
Feb 13, 2009·Journal of Applied Microbiology·M L Velázquez-HernándezJ J Valdez-Alarcón
Jan 11, 2005·Applied and Environmental Microbiology·María ValdésAnn M Hirsch
Jul 29, 2004·International Journal of Systematic and Evolutionary Microbiology·Jesús Caballero-MelladoPaulina Estrada-De los Santos
Dec 7, 2005·FEMS Microbiology Ecology·Jesús Muñoz-RojasJesús Caballero-Mellado
Aug 12, 2006·International Journal of Systematic and Evolutionary Microbiology·L PerinJ Caballero-Mellado
Sep 18, 1997·Applied and Environmental Microbiology·T Jimenez-SalgadoJ Caballero-Mellado

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