Bacterial selection for biological control of plant disease: criterion determination and validation
| Autor: | Monalize Salete Mota, Cesar Bauer Gomes, Ismail Teodoro de Souza Júnior, Andrea Bittencourt Moura |
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| Přispěvatelé: | Monalize Salete Mota, CESAR BAUER GOMES, CPACT, Ismail Teodoro Souza Júnior, Andréa Bittencourt Moura. |
| Jazyk: | angličtina |
| Předmět: |
0106 biological sciences
0301 basic medicine lcsh:QR1-502 Rhizobacteria Bacterial Physiological Phenomena 01 natural sciences Microbiology lcsh:Microbiology 03 medical and health sciences Ammonia RNA Ribosomal 16S Antibiosis Environmental Microbiology Perennial plants Mesocriconema xenoplax Soil Microbiology Plant Diseases Rhizosphere Perennial plantsa biology Bacteria antibiosis Hydrolysis food and beverages biology.organism_classification Plant disease Enzymes 030104 developmental biology Monilinia fructicola Chitinase biology.protein Phyllosphere Obligate parasites 010606 plant biology & botany |
| Zdroj: | Brazilian Journal of Microbiology Brazilian Journal of Microbiology, Vol 48, Iss 1, Pp 62-70 Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA Brazilian Journal of Microbiology, Volume: 48, Issue: 1, Pages: 62-70, Published: MAR 2017 Brazilian Journal of Microbiology v.48 n.1 2017 Sociedade Brasileira de Microbiologia (SBM) instacron:SBM |
| ISSN: | 1517-8382 |
| DOI: | 10.1016/j.bjm.2016.09.003 |
| Popis: | This study aimed to evaluate the biocontrol potential of bacteria isolated from different plant species and soils. The production of compounds related to phytopathogen biocontrol and/or promotion of plant growth in bacterial isolates was evaluated by measuring the production of antimicrobial compounds (ammonia and antibiosis) and hydrolytic enzymes (amylases, lipases, proteases, and chitinases) and phosphate solubilization. Of the 1219 bacterial isolates, 92% produced one or more of the eight compounds evaluated, but only 1% of the isolates produced all the compounds. Proteolytic activity was most frequently observed among the bacterial isolates. Among the compounds which often determine the success of biocontrol, 43% produced compounds which inhibit mycelial growth of Monilinia fructicola, but only 11% hydrolyzed chitin. Bacteria from different plant species (rhizosphere or phylloplane) exhibited differences in the ability to produce the compounds evaluated. Most bacterial isolates with biocontrol potential were isolated from rhizospheric soil. The most efficient bacteria (producing at least five compounds related to phytopathogen biocontrol and/or plant growth), 86 in total, were evaluated for their biocontrol potential by observing their ability to kill juvenile Mesocriconema xenoplax. Thus, we clearly observed that bacteria that produced more compounds related to phytopathogen biocontrol and/or plant growth had a higher efficacy for nematode biocontrol, which validated the selection strategy used. |
| Databáze: | OpenAIRE |
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