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https://doi.org/10.4995/thesis...
Doctoral thesis . 2015 . Peer-reviewed
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Respuesta de los frutos cítricos a las bajas temperaturas: estudio mediante micromatrices

Authors: Royo, Carolina;

Respuesta de los frutos cítricos a las bajas temperaturas: estudio mediante micromatrices

Abstract

En esta Tesis Doctoral se ha abordado el estudio de la respuesta al frío en el flavedo de frutos cítricos, simulando tratamientos cuarentenarios requeridos para evitar la propagación de plagas con la exportación. Desafortunadamente, hay variedades sensibles que desarrollan síntomas de daño por frío durante este tratamiento. En este trabajo se utilizaron frutos de Clementina de Nules (CN), variedad tolerante, y de Clementina Fortune (F), sensible, para analizar a nivel transcriptómico las respuestas de adaptación y de desarrollo de daños durante la exposición al frío. Para ello (1) se generaron dos genotecas de cDNA (una de longitud completa) representativas de flavedo de frutos CN sometidos a estrés por frío; (2) los cDNAs novedosos obtenidos se incluyeron (10,3%) junto con otros (12672 ESTs totales) para generar la primera micromatriz del Proyecto de Genómica de Cítricos; (3) mediante ésta micromatriz se abordó el análisis transcriptómico de CN y F. Los resultados manifestaron que en ambas variedades se produjo una represión de procesos biosintéticos, principalmente de proteínas y también de lípidos, y se activó su catabolismo. Algunas diferencias transcriptómicas podrían ser causantes, al menos en parte, de la tolerancia de CN, al igual que el retraso de la respuesta al frío en F. Por último, también se detectó un programa de expresión tardío exclusivo de F, que podría relacionarse con el desarrollo de daños.

Keywords

Cítricos, Micromatriz, Frío, Postcosecha, Genoteca, 2415 - Biología molecula, Microarray, Cdna, Frutos, 310808 - Susceptibilidad y resistencia vegetal

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selected citations
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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).
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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.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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