Determinación in vitro de la sensibilidad térmica de cepas de Xanthomonas axonopodis pv manihotis, agente causal de la bacteriosis vascular de la yuca
Cassava Bacterial Blight (CBB) is a destructive disease present in almost all the cassava-growing regions. CBB is caused by the bacteria Xanthomonas axonopodis pv. manihotis. If environmental conditions are favorable and control measures are not adopted, losses can reach 80% in only three crop cycle...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Español |
| Publicado: |
1999
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/44274 |
| _version_ | 1855528830215651328 |
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| author | Ramírez, J.A. Álvarez, E. Marmolejo de la T., F |
| author_browse | Marmolejo de la T., F Ramírez, J.A. Álvarez, E. |
| author_facet | Ramírez, J.A. Álvarez, E. Marmolejo de la T., F |
| author_sort | Ramírez, J.A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cassava Bacterial Blight (CBB) is a destructive disease present in almost all the cassava-growing regions. CBB is caused by the bacteria Xanthomonas axonopodis pv. manihotis. If environmental conditions are favorable and control measures are not adopted, losses can reach 80% in only three crop cycles after incidence started. Furthermore, losses correlate with the number of infected cuttings used for planting. Heat treatment of planting material is a common technique used to control certain plant diseases. Thermotherapy inactivates or kills a pathogen while leaving the host tissue undamaged. In the present study, the thermal sensitivity of different X. axonopodis pv manihotis strains was established. Strains were collected in three edaphoclimatic zones (ECZ) in Colombia and one in Africa. Using a regression analysis, the ideal conditions for total growth inhibition were evaluated. In the same way, the growth development was assessed when changing the temperature and time of heat treatment. Using the results obtained we discussed the possibility of testing in vivo inhibition and the establishment of a protocol to clean the vegetative material using thermotherapy. |
| format | Journal Article |
| id | CGSpace44274 |
| institution | CGIAR Consortium |
| language | Español |
| publishDate | 1999 |
| publishDateRange | 1999 |
| publishDateSort | 1999 |
| record_format | dspace |
| spelling | CGSpace442742025-11-12T05:56:30Z Determinación in vitro de la sensibilidad térmica de cepas de Xanthomonas axonopodis pv manihotis, agente causal de la bacteriosis vascular de la yuca Ramírez, J.A. Álvarez, E. Marmolejo de la T., F manihot esculenta heat therapy bacterial diseases termoterapia Cassava Bacterial Blight (CBB) is a destructive disease present in almost all the cassava-growing regions. CBB is caused by the bacteria Xanthomonas axonopodis pv. manihotis. If environmental conditions are favorable and control measures are not adopted, losses can reach 80% in only three crop cycles after incidence started. Furthermore, losses correlate with the number of infected cuttings used for planting. Heat treatment of planting material is a common technique used to control certain plant diseases. Thermotherapy inactivates or kills a pathogen while leaving the host tissue undamaged. In the present study, the thermal sensitivity of different X. axonopodis pv manihotis strains was established. Strains were collected in three edaphoclimatic zones (ECZ) in Colombia and one in Africa. Using a regression analysis, the ideal conditions for total growth inhibition were evaluated. In the same way, the growth development was assessed when changing the temperature and time of heat treatment. Using the results obtained we discussed the possibility of testing in vivo inhibition and the establishment of a protocol to clean the vegetative material using thermotherapy. La bacteriosis vascular de la yuca (CBB, del inglés Cassava Bacterial Blight) es una de las enfermedades más limitantes de la producción en este cultivo en el mundo entero. El agente causal es la bacteria Xanthomonas axonopodis pv manihotis. Al establecer plantaciones a partir de semilla infectada se han reportado pérdidas hasta del 80 %, de ahi la necesidad de obtener material de siembra sano. Desde principios de siglo se han implementado tratamientos con agua caliente sobre diversos materiales de propagación portadores de pestes y enfermedades. En el presente estudio se evaluó la sensibilidad térmica in vitro de diferentes cepas e colectadas en tres zonas ecológicas dc Colombia y una de Africa. Por medio de un análisis de regresión se establecieron las condiciones de tratamientos para tos cuales se obtiene una inactivación completa del crecimiento bacteriano. De la misma forma, se estudió el comportamiento de mortalidad en función de las variables temperatura y tiempo de tratamiento. Con los resultados obtenidos se discutió la posibilidad de probar la inhibición in vivo de X. axonopodis pv manihotis y eventualmente el establecimiento de una metodología para limpiar la semilla vegetativa de yuca de este patógeno mediante termoterapia. 1999 2014-10-02T08:33:31Z 2014-10-02T08:33:31Z Journal Article https://hdl.handle.net/10568/44274 es Open Access application/pdf |
| spellingShingle | manihot esculenta heat therapy bacterial diseases termoterapia Ramírez, J.A. Álvarez, E. Marmolejo de la T., F Determinación in vitro de la sensibilidad térmica de cepas de Xanthomonas axonopodis pv manihotis, agente causal de la bacteriosis vascular de la yuca |
| title | Determinación in vitro de la sensibilidad térmica de cepas de Xanthomonas axonopodis pv manihotis, agente causal de la bacteriosis vascular de la yuca |
| title_full | Determinación in vitro de la sensibilidad térmica de cepas de Xanthomonas axonopodis pv manihotis, agente causal de la bacteriosis vascular de la yuca |
| title_fullStr | Determinación in vitro de la sensibilidad térmica de cepas de Xanthomonas axonopodis pv manihotis, agente causal de la bacteriosis vascular de la yuca |
| title_full_unstemmed | Determinación in vitro de la sensibilidad térmica de cepas de Xanthomonas axonopodis pv manihotis, agente causal de la bacteriosis vascular de la yuca |
| title_short | Determinación in vitro de la sensibilidad térmica de cepas de Xanthomonas axonopodis pv manihotis, agente causal de la bacteriosis vascular de la yuca |
| title_sort | determinacion in vitro de la sensibilidad termica de cepas de xanthomonas axonopodis pv manihotis agente causal de la bacteriosis vascular de la yuca |
| topic | manihot esculenta heat therapy bacterial diseases termoterapia |
| url | https://hdl.handle.net/10568/44274 |
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