Genetic structure of Acetobacter diazotrophicus populations and identification of a new genetically distant group

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 whi...

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Bibliographic Details
Published in:Applied and Environmental Microbiology 1995-08, Vol.61 (8), p.3008-3013
Main Authors: Caballero-Mellado, J. (Universidad Nacional Autonoma de Mexico, Cuernavaca, Morelos, Mexico.), Fuentes-Ramirez, L.E, Reis, V.M, Martinez-Romero, E
Format: Article
Language:English
Subjects:
ACETOBACTER
Acetobacter diazotrophicus
Bacteria
BACTERIA FIJADORA DEL NITROGENO
BACTERIE FIXATRICE DE L'AZOTE
Bacteriology
Biological and medical sciences
Biology
CHIMIOTAXONOMIE
DISTANCE GENETIQUE
DISTANCIA GENETICA
ELECTROFORESIS
ELECTROPHORESE
ENZIMAS
ENZYME
Enzymes
Flowers & plants
Fundamental and applied biological sciences. Psychology
GENE
GENES
Genetics
Insects
IPOMOEA BATATAS
LOCI
LOCUS
MEXICO
MEXIQUE
Microbiology
PENNISETUM
PENNISETUM PURPUREUM
POLIMORFISMO
POLYMORPHISME
PSEUDOCOCCIDAE
QUIMIOTAXONOMIA
RACINE
RAICES
RIO DE JANEIRO
Saccharicoccus sacchari
SACCHARUM OFFICINARUM
SAO PAULO
TECHNIQUE ANALYTIQUE
TECNICAS ANALITICAS
VARIACION GENETICA
VARIATION GENETIQUE
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Description
Summary: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
ISSN:0099-2240
1098-5336
DOI:10.1128/aem.61.8.3008-3013.1995