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Screening of Endophytic Bacteria Isolated from Weed Plant to Biocontrol Stem Rot Disease on Pitaya (Hylocereus undatus)
Trung, Do Quang; Hang, Nguyen Thi Thu; Van, Dinh Mai; Ngoc, Pham Bich; Anh, Luu The.
  • Trung, Do Quang; Vietnam Academy of Science and Technology. Graduate University of Science and Technology. Cau Giay. VN
  • Hang, Nguyen Thi Thu; Vietnam National University of Forestry. Chuong My. VN
  • Van, Dinh Mai; Vietnam National University of Forestry. Chuong My. VN
  • Ngoc, Pham Bich; Vietnam Academy of Science and Technology. Institute of Biotechnology. Cau Giay. VN
  • Anh, Luu The; Vietnam National University Hanoi. Central Institute for Natural Resources and Environmental Studies. Hoan Kiem. VN
Braz. arch. biol. technol ; 65: e22200749, 2022. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1364465
ABSTRACT
Abstract Endophytic bacteria from weed are emerging as valuable alternatives for biochemical pesticides in sustainable agriculture. This study aims to discover the antagonistic effects of some endophytic bacteria isolated from weed (Lactuca indica) against A. alternata, a casual of stem end rot disease of pitaya. A total of 14 endophytic bacteria were isolated and four of them presented in vitro antagonistic activity against A. alternata. Of four, strain L115 significantly inhibited the pathogenic growth with a mean inhibition diameter of 12.67 ± 0.02 mm, while the other three (strain L110, L111, and L114) showed a weak inhibition. The results indicated that strain L115 could belong to the Bacillaceae family while the other three (strain L110, L111, and L114) had characteristics of the Pseudomonadaceae family. Interestingly, strain L115 showed positive results for phosphate solubilization, indole acetic acid (IAA), and biofilm production, whereas three other strains presented weak capabilities for phosphate solubilization, biofilm production and IAA production. In addition, the filtrate of strain L115 presented antifungal activity on biocontrol tests in vitro. Especially, strain L115 significantly increased seedling biomass of pitaya and tomato compared to the control. Hence, these results suggest strain L115 has the potential to be used as biocontrol agents against A. alternata. More studies should be done in the future to evaluate their efficiency in field conditions.


Texto completo: DisponíveL Índice: LILACS (Américas) Tipo de estudo: Estudo diagnóstico / Estudo de rastreamento Idioma: Inglês Revista: Braz. arch. biol. technol Assunto da revista: Biologia Ano de publicação: 2022 Tipo de documento: Artigo / Documento de projeto País de afiliação: Vietnã Instituição/País de afiliação: Vietnam Academy of Science and Technology/VN / Vietnam National University Hanoi/VN / Vietnam National University of Forestry/VN

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Texto completo: DisponíveL Índice: LILACS (Américas) Tipo de estudo: Estudo diagnóstico / Estudo de rastreamento Idioma: Inglês Revista: Braz. arch. biol. technol Assunto da revista: Biologia Ano de publicação: 2022 Tipo de documento: Artigo / Documento de projeto País de afiliação: Vietnã Instituição/País de afiliação: Vietnam Academy of Science and Technology/VN / Vietnam National University Hanoi/VN / Vietnam National University of Forestry/VN