Data/hora: 05/06/2024 00:14:45

Biblioteca(s): | Embrapa Agrobiologia; Embrapa Semiárido.
Data corrente: | 12/01/2023
Data da última atualização: | 20/12/2023
Autoria: | SILVA, T. R. da; RODRIGUES, R. T.; JOVINO, R. S.; CARVALHO, J. R. de S.; LEITE, J.; HOFMANN, A.; FISCHER, D.; RIBEIRO, P. R. de A.; ROUWS, L. F. M.; FERNANDES JUNIOR, P. I.; RADL, V.
Afiliação: | THAISE ROSA DA SILVA, UNIVASF; RUTH TEREZINHA RODRIGUES, UNIVASF; RAPHAEL SILVA JOVINO, UEPB; JACKSON RAFAEL DE SÁ CARVALHO, UEFS; JAKSON LEITE, IFPA; ANDREAS HOFMANN, German Research Center for Environmental Health; DOREEN FISCHER, Munich German Research Center for Environmental Health; PAULA ROSE DE ALMEIDA RIBEIRO, CNPq; LUC FELICIANUS MARIE ROUWS, CNPAB; PAULO IVAN FERNANDES JUNIOR, CPATSA; VIVIANE RADL, German Research Center for Environmental Health.
Título: | Not just passengers, but co-pilots! Non-rhizobial nodule-associated bacteria promote cowpea growth and symbiosis with (brady)rhizobia.
Ano de publicação: | 2023
Fonte/Imprenta: | Journal of Applied Microbiology, v. 134, n, 123, January 2023.
ISSN: | 1365-2672
DOI: | 10.1093/jambio/lxac013
Idioma: | Inglês
Conteúdo: | Aims To isolate and characterize non-rhizobial nodule-associated bacteria (NAB) from cowpea root-nodules regarding their performance of plant-growth-promoting mechanisms and their ability to enhance cowpea growth and symbiosis when co-inoculated with bradyrhizobia. Methods and Results Sixteen NAB were isolated, identified, and in vitro evaluated for plant growth promotion traits. The ability to promote cowpea growth was analyzed when co-inoculated with Bradyrhizobium pachyrhizi BR 3262 in sterile and non-sterile substrates. The 16S rRNA gene sequences analysis revealed that NAB belonged to the genera Chryseobacterium (4), Bacillus (3), Microbacterium (3), Agrobacterium (1), Escherichia (1), Delftia (1), Pelomonas (1), Sphingomonas (1), and Staphylococcus (1). All strains produced different amounts of auxin siderophores and formed biofilms. Twelve out of the 16 strains carried the nifH, a gene associated with nitrogen fixation. Co-inoculation of NAB (ESA 424 and ESA 29) with Bradyrhizobium pachyrhizi BR 3262 significantly promoted cowpea growth, especially after simultaneous inoculation with the three strains. Conclusions NAB are efficient cowpea growth promoters and can improve the efficiency of the symbiosis between cowpea and the N-2-fixing microsymbiont B. pachyrhizi BR 3262, mainly under a specific triple microbial association.
Palavras-Chave: | Biological nitrogen fixation; Bradyrhizobium pachyrhizi; Diversity strains; Iindole 3 acetic acid; Nodules associated bacteria.
Thesagro: | Vigna Unguiculata.
Thesaurus Nal: | Siderophores.
Categoria do assunto: | S Ciências Biológicas
Registro original: | Embrapa Agrobiologia (CNPAB)

Exemplares:

CNPAB - (42126-1) - UPC - AP - DD -  -  -  - DIS
CPATSA - (60267-1) - UPC - AP - DD -  -  -  - DIS