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PMID: 16535102 Published · ppublish English Journal Article

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

Applied and environmental microbiology ·Vol. 61 ·No. 8 ·1995-08-00 ·Pages 3008-13

Caballero-Mellado J, Fuentes-Ramirez LE, Reis VM, Martinez-Romero E

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.

Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Caballero-Mellado J
Fuentes-Ramirez L E
Reis V M
Martinez-Romero E
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Article Info
Journal
Applied and environmental microbiology
Abbr.
Appl Environ Microbiol
ISSN
0099-2240
DOI
10.1128/aem.61.8.3008-3013.1995
Published
1995-08-00
Pages
3008-13
Language
English
Region
United States
NLM ID
7605801
PMCID
PMC1388556
External Links
PubMed source DOI: 10.1128/aem.61.8.3008-3013.1995 PMC Full Text View journal details
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