title: Isolation and identification of Gluconacetobacter azotocaptans from corn rhizosphere.
abstract: Six acetic acid producing, diazotrophic bacteria were isolated from soil adhering to corn roots. These isolates were shown to be Gluconacetobacter azotocaptans and they shared some features with G. johannae and G. diazotrophicus but differed on the basis of colony morphology on different media, use of carbon sources and use of l-amino acids as a nitrogen source. The species identity was confirmed using 16S rDNA sequence analysis, PCR amplification of 16S rRNA gene with species-specific primers and amplified rDNA restriction analysis. This is the first report of the presence of this bacteria on corn plants. Scope of the paper: This is the first report of the occurrence and association of Gluconacetobacter azotocaptans with corn.
authors.affiliation: Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, Ont., Canada N5V4T3.
authors.forename: Samina
authors.initials: S
authors.lastname: Mehnaz
authors.forename: Brian
authors.initials: B
authors.lastname: Weselowski
authors.forename: George
authors.initials: G
authors.lastname: Lazarovits
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D050260:Carbohydrate Metabolism; D002244:Carbon / Q000378:metabolism; D016172:DNA Fingerprinting; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D020459:Genes, rRNA; D041821:Gluconacetobacter / Q000145:classification / Q000302:isolation & purification* / Q000502:physiology; D008969:Molecular Sequence Data; D009584:Nitrogen / Q000378:metabolism; D010802:Phylogeny; D018517:Plant Roots / Q000382:microbiology*; D016133:Polymerase Chain Reaction; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D015183:Restriction Mapping; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid; D012988:Soil Microbiology; D003313:Zea mays / Q000382:microbiology*
chemical_list: D000596:Amino Acids; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D002244:Carbon; D009584:Nitrogen