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Sobreexpresión del gen CsCh3 que codifica una quitinasa, en embriones somáticos de Castanea sativa

Authors: Corredoira, Elena; San José, M. Carmen; Ballester, Antonio; Viéitez Martín, Ana María;

Sobreexpresión del gen CsCh3 que codifica una quitinasa, en embriones somáticos de Castanea sativa

Abstract

Las poblaciones de castaño europeo y americano han sido devastadas por el ataque de dos enfermedades fúngicas causadas por Phytophthora cinnamomi y P. cambivora (tinta) y Cryphonectria parasitica (cáncer o chancro). La transformación genética podría ser una herramienta complementaria a los programas de mejora convencional con la introducción de genes que puedan incrementar la resistencia a dichas enfermedades. Al no conocerse los mecanismos de resistencia a ambas enfermedades la transformación ha de hacerse con genes no específicos que puedan conferir algún tipo de resistencia a la entrada o al movimiento de los patógenos dentro del árbol (Connors y col., 2002), como pueden ser genes tipo osmotina y quitinasa. Las quitinasas, enzimas hidrolíticas producidas por las plantas en respuesta a una infección fúngica, actúan degradando la quitina de los hongos con pared celular como es el caso de Cryphonectria parasitica. El objetivo del presente trabajo ha sido obtener castaños con resistencia/tolerancia al chancro transformado embriones somáticos con el gen CsCh3, aislado en castaño, y que codifica una endoquitinasa (Allona y col., 1996). Esta proteína se ha comprobado que posee actividad antifúngica in vitro para Trichoderma viride (Collada y col., 1992).

Trabajo presentado en la X Reunión de la Sociedad Española de Cultivo In Vitro de Tejidos Vegetales, celebrada en Zaragoza (España), del 22 al 24 de octubre de 2013

Esta investigación ha sido financiada parcialmente por la Xunta de Galicia (Proyecto 09MRU002400PR).

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Spain
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green