Searching for an alternative to manage powdery scab, caused by Spongospora subterranean, in potato

One of the main problems in potato production is powdery scab, caused by the protozoan Spongospora subterranea. Currently, there are no effective control strategies for this pathogen, which causes root damage and, therefore, reduces tuber quality. In order to develop a biocontrol alternative for pow...

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Main Authors:	Mesa, Paula, García, Celsa, Cotes, Alba Marina
Format:	Online
Language:	spa
Published:	Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC 2018
Subjects:	Biotrophic phytopathogen protozoan disease galls biocontrol organic additives. SB317.5-319.864 SB320-353.5 SB974-978 Fitopatógeno biotrófico protozoo enfermedad agallas biocontroladores aditivos orgánicos.
Online Access:	https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/6150
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author	Mesa, Paula García, Celsa Cotes, Alba Marina
author_facet	Mesa, Paula García, Celsa Cotes, Alba Marina
author_sort	Mesa, Paula
collection	OJS
description	One of the main problems in potato production is powdery scab, caused by the protozoan Spongospora subterranea. Currently, there are no effective control strategies for this pathogen, which causes root damage and, therefore, reduces tuber quality. In order to develop a biocontrol alternative for powdery scab, we assessed the effect of eight potential microbial agents belonging to the genera Trichoderma spp., Pseudomonas sp., Bacillus sp. and Streptomyces spp. in the reduction of the disease. Additionally, we evaluated biocarbon, chitin and chitosan, which are organic additives with a biocontrol potential in other pathosystems. Initially, a trial was established to obtain the development of galls in two different locations (Mosquera and Subachoque, Cundinamarca) with two concentrations of protozoan inoculum. Eight weeks after sowing, the disease severity was determined counting the number of galls per plant. Because of the consistent development of the disease, the assays were established in the municipality of Subachoque in potted plants with naturally infested soil (1×103 sporosori/g of soil). All microbial biocontrol agents showed a reduction in gall development (P>0.05). Streptomyces misionensis Ac006 caused the largest reduction in severity (51.41%). Among the organic additives, 0.5% chitosan had the greatest (62.58%) effect on disease reduction, a significant (P≤0.05) effect. Our results suggest possible alternatives for the sustainable management of powdery scab in potato.
format	Online
id	oai:oai.revistas.uptc.edu.co:article-6150
institution	Revista Colombiana de Ciencias Hortícolas
language	spa
publishDate	2018
publisher	Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC
record_format	ojs
spelling	oai:oai.revistas.uptc.edu.co:article-61502020-08-03T23:57:47Z Searching for an alternative to manage powdery scab, caused by Spongospora subterranean, in potato En búsqueda de una alternativa de manejo del camanduleo de la papa ocasionada por Spongospora subterranea Mesa, Paula García, Celsa Cotes, Alba Marina Biotrophic phytopathogen protozoan disease galls biocontrol organic additives. SB317.5-319.864 SB320-353.5 SB974-978 Fitopatógeno biotrófico protozoo enfermedad agallas biocontroladores aditivos orgánicos. SB317.5-319.864 SB320-353.5 SB974-978 One of the main problems in potato production is powdery scab, caused by the protozoan Spongospora subterranea. Currently, there are no effective control strategies for this pathogen, which causes root damage and, therefore, reduces tuber quality. In order to develop a biocontrol alternative for powdery scab, we assessed the effect of eight potential microbial agents belonging to the genera Trichoderma spp., Pseudomonas sp., Bacillus sp. and Streptomyces spp. in the reduction of the disease. Additionally, we evaluated biocarbon, chitin and chitosan, which are organic additives with a biocontrol potential in other pathosystems. Initially, a trial was established to obtain the development of galls in two different locations (Mosquera and Subachoque, Cundinamarca) with two concentrations of protozoan inoculum. Eight weeks after sowing, the disease severity was determined counting the number of galls per plant. Because of the consistent development of the disease, the assays were established in the municipality of Subachoque in potted plants with naturally infested soil (1×103 sporosori/g of soil). All microbial biocontrol agents showed a reduction in gall development (P>0.05). Streptomyces misionensis Ac006 caused the largest reduction in severity (51.41%). Among the organic additives, 0.5% chitosan had the greatest (62.58%) effect on disease reduction, a significant (P≤0.05) effect. Our results suggest possible alternatives for the sustainable management of powdery scab in potato. Entre las principales problemáticas que se presentan en la producción de papa se encuentra Spongospora subterranea (Wallr.) Lagerheim f. sp. subterranea, agente causal de la sarna polvosa y camanduleo, enfermedades que afectan los tubérculos, las raíces, que no cuentan con prácticas de manejo efectivas. Con el fin de generar una alternativa de manejo se evaluó el efecto en la reducción del camanduleo de microorganismos potencialmente biocontroladores de los géneros Trichoderma spp., Pseudomonas sp., Bacillus sp. y Streptomyces spp. Así mismo, se evaluó el biocarbón, la quitina y el quitosán, aditivos orgánicos que han demostrado actividad de control en otros patosistemas. Inicialmente, se estableció un ensayo para obtener el desarrollo de agallas en dos ambientes diferentes (Mosquera y Subachoque, Cundinamarca) y dos concentraciones de inóculo del protozoo. La evaluación se realizó 8 semanas después de la siembra (SDS), midiendo la severidad expresada como número de agallas por planta. Dado el consistente desarrollo de la enfermedad, se decidió establecer los ensayos en el Municipio de Subachoque, usando suelo naturalmente infestado con 1×103 esporosoros/gde suelo. Al aplicar los biocontroladores, se observó disminución (P>0,05) en el desarrollo de agallas con la mayoría de los microorganismos, siendo Streptomyces misionensis Ac006 el que más redujo la enfermedad en un 51,41%. Por otra parte, entre los aditivos evaluados, fue el quitosán al 0,5% con el que se obtuvo una mayor reducción (P≤0,05) en el número de agallas 62,58%. Estos resultados permiten sugerir el uso de estos tratamientos para el manejo del camanduleo de la papa. Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC 2018-01-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Experimental Experimental application/pdf https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/6150 10.17584/rcch.2017v11i2.6150 Revista Colombiana de Ciencias Hortícolas; Vol. 11 No. 2 (2017); 378-386 Revista Colombiana de Ciencias Hortícolas; Vol. 11 Núm. 2 (2017); 378-386 Revista Colombiana de Ciencias Hortícolas; Vol. 11 No 2 (2017); 378-386 Revista Colombiana de Ciencias Hortícolas; V. 11 N. 2 (2017); 378-386 Revista Colombiana de Ciencias Hortícolas; v. 11 n. 2 (2017); 378-386 2422-3719 2011-2173 spa https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/6150/pdf
spellingShingle	Biotrophic phytopathogen protozoan disease galls biocontrol organic additives. SB317.5-319.864 SB320-353.5 SB974-978 Fitopatógeno biotrófico protozoo enfermedad agallas biocontroladores aditivos orgánicos. SB317.5-319.864 SB320-353.5 SB974-978 Mesa, Paula García, Celsa Cotes, Alba Marina Searching for an alternative to manage powdery scab, caused by Spongospora subterranean, in potato
title	Searching for an alternative to manage powdery scab, caused by Spongospora subterranean, in potato
title_alt	En búsqueda de una alternativa de manejo del camanduleo de la papa ocasionada por Spongospora subterranea
title_full	Searching for an alternative to manage powdery scab, caused by Spongospora subterranean, in potato
title_fullStr	Searching for an alternative to manage powdery scab, caused by Spongospora subterranean, in potato
title_full_unstemmed	Searching for an alternative to manage powdery scab, caused by Spongospora subterranean, in potato
title_short	Searching for an alternative to manage powdery scab, caused by Spongospora subterranean, in potato
title_sort	searching for an alternative to manage powdery scab caused by spongospora subterranean in potato
topic	Biotrophic phytopathogen protozoan disease galls biocontrol organic additives. SB317.5-319.864 SB320-353.5 SB974-978 Fitopatógeno biotrófico protozoo enfermedad agallas biocontroladores aditivos orgánicos. SB317.5-319.864 SB320-353.5 SB974-978
topic_facet	Biotrophic phytopathogen protozoan disease galls biocontrol organic additives. SB317.5-319.864 SB320-353.5 SB974-978 Fitopatógeno biotrófico protozoo enfermedad agallas biocontroladores aditivos orgánicos. SB317.5-319.864 SB320-353.5 SB974-978
url	https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/6150
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