Biocontrol capacity of wild and mutant Trichoderma harzianum (Rifai) strains on Rhizoctonia solani 618: effect of temperature and soil type during storage

Wild (Th11, Th12 and Th650) and mutant (Th11A80.1, Th12A40.1, Th12C40.1 and Th650-NG7) Trichoderma harzianum strains were stored for 180 days at 5ºC or at 22ºC, in two types of soils. Strains recovered at 90, 120 and 180 days from the two types of soils, retained their full capacity to biocontrol Rh...

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Autores principales:	Montealegre,Jaime, Valderrama,Luis, Herrera,Rodrigo, Besoaín,Ximena, Pérez,Luz M
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2009
Materias:	bioantagonism persistence root rot tomato
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000400002
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spelling	oai:scielo:S0717-345820090004000022010-04-19Biocontrol capacity of wild and mutant Trichoderma harzianum (Rifai) strains on Rhizoctonia solani 618: effect of temperature and soil type during storageMontealegre,JaimeValderrama,LuisHerrera,RodrigoBesoaín,XimenaPérez,Luz M bioantagonism persistence root rot tomato Wild (Th11, Th12 and Th650) and mutant (Th11A80.1, Th12A40.1, Th12C40.1 and Th650-NG7) Trichoderma harzianum strains were stored for 180 days at 5ºC or at 22ºC, in two types of soils. Strains recovered at 90, 120 and 180 days from the two types of soils, retained their full capacity to biocontrol Rhizoctonia solani 618, that produces crown and root rot of tomatoes. Recovery, estimated as colony forming units (cfu) of the wild and mutant strains, showed that all increased their cfu after storage independently of the type of soil and temperature, although kinetic behavior differed among strains. Ratios of recovery after storage in type B soil/ type A soil or at 22ºC/5ºC, higher or lower than one respectively, allowed to establish that Th11 and Th12 were the most appropriate strains for the biocontrol of R. solani in conditions where growth of the phytopathogen is optimal.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.12 n.4 20092009-10-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000400002en10.4067/S0717-34582009000400002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	bioantagonism persistence root rot tomato
spellingShingle	bioantagonism persistence root rot tomato Montealegre,Jaime Valderrama,Luis Herrera,Rodrigo Besoaín,Ximena Pérez,Luz M Biocontrol capacity of wild and mutant Trichoderma harzianum (Rifai) strains on Rhizoctonia solani 618: effect of temperature and soil type during storage
description	Wild (Th11, Th12 and Th650) and mutant (Th11A80.1, Th12A40.1, Th12C40.1 and Th650-NG7) Trichoderma harzianum strains were stored for 180 days at 5ºC or at 22ºC, in two types of soils. Strains recovered at 90, 120 and 180 days from the two types of soils, retained their full capacity to biocontrol Rhizoctonia solani 618, that produces crown and root rot of tomatoes. Recovery, estimated as colony forming units (cfu) of the wild and mutant strains, showed that all increased their cfu after storage independently of the type of soil and temperature, although kinetic behavior differed among strains. Ratios of recovery after storage in type B soil/ type A soil or at 22ºC/5ºC, higher or lower than one respectively, allowed to establish that Th11 and Th12 were the most appropriate strains for the biocontrol of R. solani in conditions where growth of the phytopathogen is optimal.
author	Montealegre,Jaime Valderrama,Luis Herrera,Rodrigo Besoaín,Ximena Pérez,Luz M
author_facet	Montealegre,Jaime Valderrama,Luis Herrera,Rodrigo Besoaín,Ximena Pérez,Luz M
author_sort	Montealegre,Jaime
title	Biocontrol capacity of wild and mutant Trichoderma harzianum (Rifai) strains on Rhizoctonia solani 618: effect of temperature and soil type during storage
title_short	Biocontrol capacity of wild and mutant Trichoderma harzianum (Rifai) strains on Rhizoctonia solani 618: effect of temperature and soil type during storage
title_full	Biocontrol capacity of wild and mutant Trichoderma harzianum (Rifai) strains on Rhizoctonia solani 618: effect of temperature and soil type during storage
title_fullStr	Biocontrol capacity of wild and mutant Trichoderma harzianum (Rifai) strains on Rhizoctonia solani 618: effect of temperature and soil type during storage
title_full_unstemmed	Biocontrol capacity of wild and mutant Trichoderma harzianum (Rifai) strains on Rhizoctonia solani 618: effect of temperature and soil type during storage
title_sort	biocontrol capacity of wild and mutant trichoderma harzianum (rifai) strains on rhizoctonia solani 618: effect of temperature and soil type during storage
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000400002
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Biocontrol capacity of wild and mutant Trichoderma harzianum (Rifai) strains on Rhizoctonia solani 618: effect of temperature and soil type during storage

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