Evaluation of indigenous bacterial strains for biocontrol of the frogeye leaf spot of soya bean caused by Cercospora sojina

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Aims: Assessment of biological control of Cercospora sojina, causal agent of frogeye leaf spot [FLS] of soya bean, using three indigenous bacterial strains, BNM297 [Pseudomonas fluorescens], BNM340 and BNM122 [Bacillus amyloliquefaciens]. Methods and Results: From cultures of each bacterial strain,...

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Detalles Bibliográficos
Otros Autores: Simonetti, Ester, Carmona, Marcelo Aníbal, Scandiani, María Mercedes, García, A. F., Luque, A. G., Correa, Olga Susana, Balestrasse, Karina Beatriz
Formato: Artículo
Lenguaje:Inglés
Materias:
BIOLOGICAL CONTROL
FROGEYE LEAF SPOT
ANTAGONISM
ANTIMICROBIAL ACTIVITY
BACTERIUM
FUNGAL DISEASE
GREENHOUSE ECOSYSTEM
INHIBITION
SEEDLING
ANTIFUNGAL ACTIVITY
BACTERIAL CELL
BACTERIAL STRAIN
BACTERIUM CULTURE
CELL SUSPENSION
CONTROLLED STUDY
DISEASE SEVERITY
FUNGAL SPORE GERMINATION
FUNGUS
GREENHOUSE
IN VITRO STUDY
LEAF LITTER
LEAF SPOT
MYCELIAL GROWTH
NONHUMAN
RHIZOSPHERE FUNGUS
SOYBEAN
SUPERNATANT
ASCOMYCOTA
BACILLUS
PLANT DISEASES
PLANT LEAVES
PSEUDOMONAS FLUORESCENS
SOYBEANS
BACILLUS [BACTERIUM]
BACILLUS AMYLOLIQUEFACIENS
BACTERIA [MICROORGANISMS]
CERCOSPORA SOJINA
FUNGI
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2012Simonetti2.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 0 |a Evaluation of indigenous bacterial strains for biocontrol of the frogeye leaf spot of soya bean caused by Cercospora sojina 
520 |a Aims: Assessment of biological control of Cercospora sojina, causal agent of frogeye leaf spot [FLS] of soya bean, using three indigenous bacterial strains, BNM297 [Pseudomonas fluorescens], BNM340 and BNM122 [Bacillus amyloliquefaciens]. Methods and Results: From cultures of each bacterial strain, cell suspensions and cell-free supernatants were obtained and assayed to determine their antifungal activity against C. sojina. Both mycelial growth and spore germination in vitro were more strongly inhibited by bacterial cell suspensions than by cell-free supernatants. The Bacillus strains BNM122 and BNM340 inhibited the fungal growth to a similar degree [I ~52-53 percent], while cells from P. fluorescens BNM297 caused a lesser reduction [I ~32-34 percent] in the fungus colony diameter. The foliar application of the two Bacillus strains on soya bean seedlings, under greenhouse conditions, significantly reduced the disease severity with respect to control soya bean seedlings and those sprayed with BNM297. This last bacterial strain was not effective in controlling FLS in vivo. Conclusions: Our data demonstrate that the application of antagonistic bacteria may be a promising and environmentally friendly alternative to control the FLS of soya bean. Significance and Impact of the Study: To our knowledge, this is the first report of biological control of C. sojina by using native Bacillus strains. 
653 0 |a BIOLOGICAL CONTROL 
653 0 |a FROGEYE LEAF SPOT 
653 0 |a ANTAGONISM 
653 0 |a ANTIMICROBIAL ACTIVITY 
653 0 |a BACTERIUM 
653 0 |a FUNGAL DISEASE 
653 0 |a GREENHOUSE ECOSYSTEM 
653 0 |a INHIBITION 
653 0 |a SEEDLING 
653 0 |a ANTIFUNGAL ACTIVITY 
653 0 |a BACTERIAL CELL 
653 0 |a BACTERIAL STRAIN 
653 0 |a BACTERIUM CULTURE 
653 0 |a CELL SUSPENSION 
653 0 |a CONTROLLED STUDY 
653 0 |a DISEASE SEVERITY 
653 0 |a FROGEYE LEAF SPOT 
653 0 |a FUNGAL SPORE GERMINATION 
653 0 |a FUNGUS 
653 0 |a GREENHOUSE 
653 0 |a IN VITRO STUDY 
653 0 |a LEAF LITTER 
653 0 |a LEAF SPOT 
653 0 |a MYCELIAL GROWTH 
653 0 |a NONHUMAN 
653 0 |a RHIZOSPHERE FUNGUS 
653 0 |a SEEDLING 
653 0 |a SOYBEAN 
653 0 |a SUPERNATANT 
653 0 |a ASCOMYCOTA 
653 0 |a BACILLUS 
653 0 |a PLANT DISEASES 
653 0 |a PLANT LEAVES 
653 0 |a PSEUDOMONAS FLUORESCENS 
653 0 |a SOYBEANS 
653 0 |a BACILLUS [BACTERIUM] 
653 0 |a BACILLUS AMYLOLIQUEFACIENS 
653 0 |a BACTERIA [MICROORGANISMS] 
653 0 |a CERCOSPORA SOJINA 
653 0 |a FUNGI 
700 1 |9 50328  |a Simonetti, Ester 
700 1 |9 3109  |a Carmona, Marcelo Aníbal 
700 1 |9 32186  |a Scandiani, María Mercedes 
700 |a García, A. F.  |9 48356 
700 1 |a Luque, A. G.  |9 72084 
700 1 |a Correa, Olga Susana  |9 15764 
700 1 |a Balestrasse, Karina Beatriz  |9 37343 
773 |t Letters in Applied Microbiology  |g Vol.55, no.2 (2012), p.170-173 
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900 |a ^tEvaluation of indigenous bacterial strains for biocontrol of the frogeye leaf spot of soya bean caused by Cercospora sojina 
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900 |a ^aCarmona^bM.A. 
900 |a ^aScandiani^bM.M. 
900 |a ^aGarcía^bA.F. 
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900 |a ^aBalestrasse^bK.B. 
900 |a ^aSimonetti^bE. 
900 |a ^aCarmona^bM. A. 
900 |a ^aScandiani^bM. M. 
900 |a ^aGarcía^bA. F. 
900 |a ^aLuque^bA. G. 
900 |a ^aCorrea^bO. S. 
900 |a ^aBalestrasse^bK. B. 
900 |a ^aSimonetti^bE.^tCátedra de Microbiología Agrícola/INBA [CONICET/UBA], Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina 
900 |a ^aCarmona^bM.A.^tCátedra de Fitopatología, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina 
900 |a ^aScandiani^bM.M.^tLaboratorio Agrícola Río Paraná, San Pedro, Buenos Aires, Argentina 
900 |a ^aGarcía^bA.F.^tInstituto de Investigaciones en Biociencias Agrícolas y Ambientales, INBA [CONICET/UBA], Buenos Aires, Argentina 
900 |a ^aLuque^bA.G.^tCentro de Referencia en Micología, Universidad Nacional de Rosario, Santa Fe, Argentina 
900 |a ^aCorrea^bO.S.^tDepartamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina 
900 |a ^aBalestrasse^bK.B. 
900 |a ^tLetters in Applied Microbiology^cLett. Appl. Microbiol. 
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900 |a Vol. 55, no. 2 
900 |a 173 
900 |a BIOLOGICAL CONTROL 
900 |a FROGEYE LEAF SPOT 
900 |a ANTAGONISM 
900 |a ANTIMICROBIAL ACTIVITY 
900 |a BACTERIUM 
900 |a FUNGAL DISEASE 
900 |a GREENHOUSE ECOSYSTEM 
900 |a INHIBITION 
900 |a SEEDLING 
900 |a ANTIFUNGAL ACTIVITY 
900 |a BACTERIAL CELL 
900 |a BACTERIAL STRAIN 
900 |a BACTERIUM CULTURE 
900 |a CELL SUSPENSION 
900 |a CONTROLLED STUDY 
900 |a DISEASE SEVERITY 
900 |a FROGEYE LEAF SPOT 
900 |a FUNGAL SPORE GERMINATION 
900 |a FUNGUS 
900 |a GREENHOUSE 
900 |a IN VITRO STUDY 
900 |a LEAF LITTER 
900 |a LEAF SPOT 
900 |a MYCELIAL GROWTH 
900 |a NONHUMAN 
900 |a RHIZOSPHERE FUNGUS 
900 |a SEEDLING 
900 |a SOYBEAN 
900 |a SUPERNATANT 
900 |a ASCOMYCOTA 
900 |a BACILLUS 
900 |a PLANT DISEASES 
900 |a PLANT LEAVES 
900 |a PSEUDOMONAS FLUORESCENS 
900 |a SOYBEANS 
900 |a BACILLUS [BACTERIUM] 
900 |a BACILLUS AMYLOLIQUEFACIENS 
900 |a BACTERIA [MICROORGANISMS] 
900 |a CERCOSPORA SOJINA 
900 |a FUNGI 
900 |a Aims: Assessment of biological control of Cercospora sojina, causal agent of frogeye leaf spot [FLS] of soya bean, using three indigenous bacterial strains, BNM297 [Pseudomonas fluorescens], BNM340 and BNM122 [Bacillus amyloliquefaciens]. Methods and Results: From cultures of each bacterial strain, cell suspensions and cell-free supernatants were obtained and assayed to determine their antifungal activity against C. sojina. Both mycelial growth and spore germination in vitro were more strongly inhibited by bacterial cell suspensions than by cell-free supernatants. The Bacillus strains BNM122 and BNM340 inhibited the fungal growth to a similar degree [I ~52-53 percent], while cells from P. fluorescens BNM297 caused a lesser reduction [I ~32-34 percent] in the fungus colony diameter. The foliar application of the two Bacillus strains on soya bean seedlings, under greenhouse conditions, significantly reduced the disease severity with respect to control soya bean seedlings and those sprayed with BNM297. This last bacterial strain was not effective in controlling FLS in vivo. Conclusions: Our data demonstrate that the application of antagonistic bacteria may be a promising and environmentally friendly alternative to control the FLS of soya bean. Significance and Impact of the Study: To our knowledge, this is the first report of biological control of C. sojina by using native Bacillus strains. 
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