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Bacillus thuringiensis RZ2MS9, a tropical plant growth-promoting rhizobacterium, colonizes maize endophytically and alters the plant's production of volatile organic compounds during co-inoculation with Azospirillum brasilense Ab-V5

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Autor(es):
de Almeida, Jaqueline Raquel [1] ; Bonatelli, Maria Leticia [2, 1] ; Batista, Bruna Durante [1] ; Teixeira-Silva, Natalia Sousa [1] ; Mondin, Mateus [1] ; dos Santos, Rafaela Cristina [3] ; Bento, Jose Mauricio Simoes [3] ; de Almeida Hayashibara, Carolina Alessandra [1] ; Azevedo, Joao Lucio [1] ; Quecine, Maria Carolina [1]
Número total de Autores: 10
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Dept Genet Luiz de Queiroz, Coll Agr, ESALQ, Piracicaba, SP - Brazil
[2] Western Sydney Univ, Hawkesbury Inst Environm, Richmond, NSW - Australia
[3] Univ Sao Paulo, Dept Entomol Luiz de Queiroz, Coll Agr, ESALQ, Piracicaba, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: ENVIRONMENTAL MICROBIOLOGY REPORTS; v. 13, n. 6 AUG 2021.
Citações Web of Science: 0
Resumo

The beneficial features of Bacillus thuringiensis (Bt) are not limited to its role as an insecticide; it is also able to promote plant growth interacting with plants and other plant growth-promoting rhizobacterium (PGPR). The PGPR Bt strain RZ2MS9 is a multi-trait maize growth promoter. We obtained a stable mutant of RZ2MS9 labelled with green fluorescent protein (RZ2MS9-GFP). We demonstrated that the Bt RZ2MS9-GFP successfully colonizes maize's roots and leaves endophytically. We evaluated whether RZ2MS9 has an additive effect on plant growth promotion when co-inoculated with Azospirillum brasilense Ab-V5. The two strains combined enhanced maize's roots and shoots dry weight around 50% and 80%, respectively, when compared to the non-inoculated control. However, non-differences were observed comparing RZ2MS9 alone and when co-inoculated with Ab-V5, In addition, we used co-inoculation experiments in glass chambers to analyse the plant's volatile organic compounds (VOCs) production during the maize-RZ2MS9 and maize-RZ2MS9-Ab-V5 interaction. We found that the single and co-inoculation altered maize's VOCs emission profile, with an increase in the production of indoles in the co-inoculation. Collectively, these results increase our knowledge about the interaction between the Bt and maize, and provide a new possibility of combined application with the commercial inoculant A. brasilense Ab-V5. (AU)

Processo FAPESP: 16/16868-8 - Modulação da interação entre bactérias promotoras de crescimento e o milho pelo sistema quorum sensing
Beneficiário:Jaqueline Raquel de Almeida
Modalidade de apoio: Bolsas no Brasil - Mestrado
Processo FAPESP: 15/01188-9 - Estudo genômico, fenotípico e molecular da interação entre Burkholderia ambifaria RZ2MS16, uma rizobactéria promotora de crescimento vegetal, e o milho tropical
Beneficiário:João Lúcio de Azevedo
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 14/50871-0 - INCT 2014: Instituto Nacional de Ciência Tecnologia de Semioquímicos na Agricultura
Beneficiário:José Roberto Postali Parra
Modalidade de apoio: Auxílio à Pesquisa - Temático