Data/hora: 20/06/2024 15:31:52

Biblioteca(s): 	Embrapa Agrobiologia.	
Data corrente: 	27/09/2022	
Data da última atualização: 	27/09/2022	
Autoria: 	FERREIRA, N. dos S.; GONIGLIO, A.; PUENTE, M.; SANTANNA, F. H.; MARONICHE, G.; GARCIA, J.; MOLINA, R.; NIEVAS, S.; VOLPIANO, C. G.; AMBROSINI, A.; PASSAGLIA, L. M. P.; PEDRAZA, R. O.; REIS, V. M.; ZILLI, J. E.; CASSAN, F.	
Afiliação: 	NATÁLIA DOS SANTOS FERREIRA, UFRRJ; ANAHÍ CONIGLIO, Universidad Nacional de Río Cuarto; MARIANA PUENTE, INTA; FERNANDO HAYASHI SANT'ANNA, PROAD-SUS; GUILLERMO MARONICHE, Universidad Nacional de Mar del Plata; JULIA GARCÍA, INTA; ROMINA MOLINA, UNIVERSIDAD NACIONAL DE RIO CUARTO; SOFIA NIEVAS, UNIVERSIDAD NACIONAL DE RIO CUARTO; CAMILA GAZOLLA VOLPIANO, UFGRS; ADRIANA AMBROSINI, UFRGS; LUCIANE M P PASSAGLIA, UFRGS; RAUL O. PEDRAZA, Universidad Nacional de Tucumán; VERONICA MASSENA REIS, CNPAB; JERRI EDSON ZILLI, CNPAB; FABRICIO CASSAN, Universidad Nacional de Río Cuarto.	
Título: 	Genome-based reclassification of Azospirillum brasilense Az39 as the type strain of Azospirillum argentinense sp. nov.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	International Journal of Systematic and Evolutionary Microbiology, v. 72, n. 8, aug. 2022.	
ISSN: 	1466-5034	
DOI: 	0.1099/ijsem.0.005475	
Idioma: 	Inglês	
Conteúdo: 	Strain Az39T of Azospirillum is a diazotrophic plant growth-promoting bacterium isolated in 1982 from the roots of wheat plants growing in Marcos Juárez, Córdoba, Argentina. It produces indole-3-acetic acid in the presence of l-tryptophan as a precursor, grows at 20-38 °C (optimal 38 °C), and the cells are curved or spiral-shaped, with diameters ranging from 0.5-0.9 to 1.8-2.2 µm. They contain C16 : 0, C18 : 0 and C18 : 1 &#969;7c/&#969;6c as the main fatty acids. Phylogenetic analysis of its 16S rRNA gene sequence confirmed that this strain belongs to the genus Azospirillum, showing a close relationship with Azospirillum baldaniorum Sp245T, Azospirillum brasilense Sp7T and Azospirillum formosense CC-Nfb-7T. Housekeeping gene analysis revealed that Az39T, together with five strains of the genus (Az19, REC3, BR 11975, MTCC4035 and MTCC4036), form a cluster apart from A. baldaniorum Sp245T, A. brasilense Sp7T and A. formosense CC-Nfb-7T. Average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) between Az39T and the aforementioned type strains revealed values below 96 %, the circumscription limit for the species delineation (ANI: 95.3, 94.1 and 94.0 %; dDDH: 62.9, 56.3 and 55.6 %). Furthermore, a phylogeny evaluation of the core proteome, including 809 common shared proteins, showed an independent grouping of Az39T, Az19, REC3, BR 11975, MTCC4035 and MTCC4036. The G+C content in the genomic DNA of these six strains varied from 68.3 to 68.5 %. Based on the combined phylogenetic, genomic and phenotypic characterization presented here, we consider that strain Az39T, along with strains Az19, REC3, BR 11975, MTCC4035 and MTCC4036, are members of a new Azospirillum species, for which the name Azospirillum argentinense sp. nov. is proposed. The type strain is Az39T (=LBPCV39T=BR 148428T=CCCT 22.01T).	
Palavras-Chave: 	Proteome core.	
Thesaurus Nal: 	Azospirillum; Phylogeny.	
Categoria do assunto: 	S Ciências Biológicas	
Registro original: 	Embrapa Agrobiologia (CNPAB)	
Exemplares: 	CNPAB - (42015-1) - UPC - AP - DD -  -  -  - DIS