Rhizoctonia solani check for this species in other resources , Bacillus lentimorbus check for this species in other resources ( Paenibacillus lentimorbus check for this species in other resources ), Bacillus subtilis check for this species in other resources , Lycopersicon esculentum check for this species in other resources "/>
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Electronic Journal of Biotechnology
Universidad Católica de Valparaíso
ISSN: 0717-3458
Vol. 6, No. 2, 2003, pp. 115-127
Bioline Code: ej03015
Full paper language: English
Document type: Research Article
Document available free of charge

Electronic Journal of Biotechnology, Vol. 6, No. 2, 2003, pp. 115-127

 en Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani check for this species in other resources in tomato
Montealegre, Jaime R.; Reyes, Rodrigo; Pérez, Luz María; Herrera, Rodrigo; Silva, Polyana & Besoain, Ximena

Abstract

Bacteria from the rhizoplane and surrounding soil of healthy and Rhizoctonia solani check for this species in other resources 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 check for this species in other resources (one isolate) and B. lentimorbus check for this species in other resources (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.

Keywords
anastomosis groups of Rhizoctonia solani check for this species in other resources , Bacillus lentimorbus check for this species in other resources ( Paenibacillus lentimorbus check for this species in other resources ), Bacillus subtilis check for this species in other resources , Lycopersicon esculentum check for this species in other resources

 
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