Screening of bacterial isolates antagonists and suppressors of blast in rice plants.

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dc.contributorAKINTUNDE ABIODUN AJULO, UNIVERSIDADE FEDERAL DE GOIÁS
dc.contributorRODRIGO SILVA DE OLIVEIRA, UNIVERSIDADE FEDERAL DE GOIÁS
dc.contributorSORAIA F. BEZERRA
dc.contributorNIEDJA BEZERRA COSTA, UNIVERSIDADE ESTADUAL DO MARANHÃO
dc.contributorARIANY ROSA GONÇALVES, FUNDAÇÃO DE APOIO À PESQUISA E AO DESENVOLVIMENTO
dc.contributorMAYTHSULENE INACIO DE SOUZA OLIVEIRA, UNIVERSIDADE FEDERAL DE GOIÁS
dc.contributorMARTA CRISTINA CORSI DE FILIPPI, CNPAF.
dc.creatorAJULO, A. A.
dc.creatorOLIVEIRA, R. S. de
dc.creatorBEZERRA, S. F.
dc.creatorCOSTA, N. B.
dc.creatorGONÇALVES, A. R.
dc.creatorOLIVEIRA, M. I. de S.
dc.creatorFILIPPI, M. C. C. de
dc.date2024-07-02T13:55:53Z
dc.date2024-07-02T13:55:53Z
dc.date2024-07-02
dc.date2024
dc.date.accessioned2026-07-01T00:10:44Z
dc.descriptionGrain yields of rice (Oryza sativa) are affected globally by rice blast (Magnaporthe oryzae). The main objective of this study was to identify isolates of rhizobacterial antagonists of M. oryzae (BRM10781) and screen the most effective isolates for suppressing rice blast under greenhouse conditions. Two assays (E1 and E2) were performed with 22 treatments in a completely randomized design with three replicates. E1 investigated in vitro antagonism between 21 isolates and M. oryzae under laboratory conditions. The E2 experiments were conducted under greenhouse conditions, with rice cultivar BRS Primavera seeds in plastic trays containing 3 kg of fertilized soil. After 21 days, the rice leaves were spray-inoculated with a bacterial cell suspension (1 × 108 CFU) and M. oryzae (3 × 105 conidia.mL-1) or with water (absolute control). Seven isolates, Serratia marcescens (BRM65918, BRM65923, BRM65926, and BRM63532), Bacillus cereus (BRM65919), Stenotrophomonas nitritireducens (BRM65917), and Priestia megaterium (BRM65929), reduced radial growth of M. oryzae colonies from 80.26 to 77.33%. The best leaf blast severity reducers were Pseudomonas nitroreducens (BRM32112), B. thuringiensis (BRM65928), P. megaterium (BRM65916), S. marcescens (BRM65918), S. nematodiphila (BRM63522), and Enterobacter hormaechei (BRM65925), varying from 97 to 95% respectively. The isolate BRM65918 (S. marcescens) showed the best efficiency for both antagonism and disease suppression, indicating its potential as a bioproduct for the biocontrol of rice blast in rice plants.
dc.identifierRevista Caatinga, v. 37, e11724, 2024.
dc.identifier1983-2125
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1165291
dc.identifierhttps://doi.org/10.1590/1983-21252024v3711724rc
dc.identifier.urihttp://hdl.handle.net/123456789/399061
dc.languageeng
dc.rightsopenAccess
dc.subjectBioagents
dc.subjectBiocontrol
dc.subjectDisease suppression
dc.subjectBioagentes
dc.subjectBiocontrole
dc.subjectSupressão da doença
dc.subjectArroz
dc.subjectOryza Sativa
dc.subjectInoculação
dc.subjectBrusone
dc.subjectAntagonismo
dc.subjectMagnaporthe oryzae
dc.subjectRice
dc.subjectBlast disease
dc.subjectInoculation methods
dc.titleScreening of bacterial isolates antagonists and suppressors of blast in rice plants.
dc.typeArtigo de periódico

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