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Artículo

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

Simonetti, EsterIcon ; Carmona, Marcelo Anibal; Scandiani, María Mercedes; Garcia, Augusto FernandoIcon ; Luque, Gustavo Adolfo Martín; Correa, Olga Susana; Balestrasse, Karina BeatrizIcon
Fecha de publicación: 08/2012
Editorial: Wiley Blackwell Publishing, Inc
Revista: Letters in Applied Microbiology
ISSN: 0266-8254
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

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%), while cells from P. fluorescens BNM297 caused a lesser reduction (I∼32-34%) 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. © 2012 The Authors. Letters in Applied Microbiology © 2012 The Society for Applied Microbiology.
Palabras clave: Bacillus Amyloliquefaciens , Biological Control , Cercospora Sojina , Frogeye Leaf Spot , Pseudomonas Fluorescens
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/60409
DOI: https://dx.doi.org/10.1111/j.1472-765X.2012.03266.x
URL: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1472-765X.2012.03266.x
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Articulos(INBA)
Articulos de INST.DE INVEST. EN BIOCIENCIAS AGRICOLAS Y AMBIENTALES
Citación
Simonetti, Ester; Carmona, Marcelo Anibal; Scandiani, María Mercedes; Garcia, Augusto Fernando; Luque, Gustavo Adolfo Martín; et al.; Evaluation of indigenous bacterial strains for biocontrol of the frogeye leaf spot of soya bean caused by Cercospora sojina; Wiley Blackwell Publishing, Inc; Letters in Applied Microbiology; 55; 2; 8-2012; 170-173
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