Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani in tomato

Bacteria from the rhizoplane and surrounding soil of healthy and Rhizoctonia solani diseased tomato plants, cropped in greenhouse of the V Region of Chile, were collected. The best bacterial strains, based on their ability to control development of three R. solani isolates (identified as belonging t...

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Autores principales:	Montealegre,Jaime R., Reyes,Rodrigo, Pérez,Luz María, Herrera,Rodrigo, Silva,Polyana, Besoain,Ximena
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2003
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582003000200006
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spelling	oai:scielo:S0717-345820030002000062004-05-13Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani in tomatoMontealegre,Jaime R.Reyes,RodrigoPérez,Luz MaríaHerrera,RodrigoSilva,PolyanaBesoain,Ximena Bacteria from the rhizoplane and surrounding soil of healthy and Rhizoctonia solani diseased tomato plants, cropped in greenhouse of the V Region of Chile, were collected. The best bacterial strains, based on their ability to control development of three R. solani isolates (identified as belonging to the anastomosis groups AG-2-1, AG‑4), were identified as B. subtilis (one isolate) and B. lentimorbus (two different isolates). All bacterial isolates resulted effective for the in vitro control of growth of all R. solani isolates, where the control mechanisms used by the bacteria do not involve the secretion of fungal cell wall hydrolytic enzymes. R. solani AG-2-1 was more sensitive than R. solani AG-4. On the other hand, all bacteria grew well in conditions similar to those that can be found at the field level (considering pH, salinity, Fe3+ and temperature) and showed a good capacity of tomato root colonization. These results suggest that the B. subtilis and B. lentimorbus isolates studied have an excellent potential to be used as biocontrol agents of R. solani in tomato greenhouses at the field level.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.6 n.2 20032003-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582003000200006en
institution	Scielo Chile
collection	Scielo Chile
language	English
description	Bacteria from the rhizoplane and surrounding soil of healthy and Rhizoctonia solani diseased tomato plants, cropped in greenhouse of the V Region of Chile, were collected. The best bacterial strains, based on their ability to control development of three R. solani isolates (identified as belonging to the anastomosis groups AG-2-1, AG‑4), were identified as B. subtilis (one isolate) and B. lentimorbus (two different isolates). All bacterial isolates resulted effective for the in vitro control of growth of all R. solani isolates, where the control mechanisms used by the bacteria do not involve the secretion of fungal cell wall hydrolytic enzymes. R. solani AG-2-1 was more sensitive than R. solani AG-4. On the other hand, all bacteria grew well in conditions similar to those that can be found at the field level (considering pH, salinity, Fe3+ and temperature) and showed a good capacity of tomato root colonization. These results suggest that the B. subtilis and B. lentimorbus isolates studied have an excellent potential to be used as biocontrol agents of R. solani in tomato greenhouses at the field level.
author	Montealegre,Jaime R. Reyes,Rodrigo Pérez,Luz María Herrera,Rodrigo Silva,Polyana Besoain,Ximena
spellingShingle	Montealegre,Jaime R. Reyes,Rodrigo Pérez,Luz María Herrera,Rodrigo Silva,Polyana Besoain,Ximena Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani in tomato
author_facet	Montealegre,Jaime R. Reyes,Rodrigo Pérez,Luz María Herrera,Rodrigo Silva,Polyana Besoain,Ximena
author_sort	Montealegre,Jaime R.
title	Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani in tomato
title_short	Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani in tomato
title_full	Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani in tomato
title_fullStr	Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani in tomato
title_full_unstemmed	Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani in tomato
title_sort	selection of bioantagonistic bacteria to be used in biological control of rhizoctonia solani in tomato
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2003
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582003000200006
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Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani in tomato

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