Data/hora: 19/06/2024 16:58:21

Biblioteca(s): 	Embrapa Agrobiologia.	
Data corrente: 	30/06/2021	
Data da última atualização: 	30/06/2021	
Autoria: 	SANTOS, C. M. dos; RIBEIRO, N. V. S.; SCHWAB, S.; BALDANI, J. I.; VIDAL, M. S.	
Afiliação: 	CARLOS M. DOS SANTOS, Bolsista da Embrapa Agrobiologia; NÁTHALIA V. S. RIBEIRO, Bolsista da Embrapa Agrobiologia; STEFAN SCHWAB, CNPAB; JOSE IVO BALDANI, CNPAB; MARCIA SOARES VIDAL, CNPAB.	
Título: 	The effect of inoculation of a diazotrophic bacterial xonsortium on the indigenous bacterial community structure of sugarcane apoplast fluid.	
Ano de publicação: 	2021	
Fonte/Imprenta: 	Current Microbiologym, Published online, 25 june 2021.	
ISSN: 	1432-0991	
DOI: 	https://doi.org/10.1007/s00284-021-02571-0	
Idioma: 	Inglês	
Conteúdo: 	The extracellular space in plants, termed the apoplast, has a pH and sugar content that enables bacterial growth and represents a possible niche for the establishment of endophytic bacteria. Previous studies have investigated the effects of diazotrophic bacteria inoculation in sugarcane varieties, but it has not yet been analyzed how the microbial community of apoplast fluid of sugarcane is affected. High-throughput next generation sequencing of the 16S rRNA gene was used throughout this study to determine the effect of inoculation with a diazotrophic bacteria consortium, previously isolated from sugarcane, on the native bacterial population of sugarcane variety RB867515 grown in the field. The analyses were carried out 450 days after inoculation. The results revealed the presence of 22 phyla, with predominance of Proteobacteria phylum. It was observed that the inoculated consortium changed the indigenous bacterial community structure of sugarcane apoplast fluid by decreasing diversity and evenness, interfering in the composition of rare species. Microbial community composition analysis revealed differences between treatments. The differential abundance test showed there were 43 amplicon sequence variants (ASVs) which were relatively more abundant in the inoculated treatment, with predominance of the Sphingomonas genus. The pre-dicted functions of the most abundant ASVs revealed the presence of genera related to plant growth promotion and protection against phytopathogens. Analysis to evaluate the occurrence of inoculated strains in the recovered data was not conclusive since the ASVs taxonomically close to the inoculated bacteria were observed in low abundance. The present study is the first report to elucidate the bacterial community in sugarcane apoplast fluid using a culture-independent approach. It demonstrated that the diazotrophic bacterial consortium interferes in the natural bacterial community in sugarcane variety RB867515	
Palavras-Chave: 	Endophytic bacteria; Plant growth promotion bacteria.	
Categoria do assunto: 	S Ciências Biológicas	
Registro original: 	Embrapa Agrobiologia (CNPAB)	
Exemplares: 	CNPAB - (41749-1) - UPC - AP - DD -  -  -  - DIS