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Título: | Low temperature regulates Arabidopsis Lhcb gene expression in a light-independent manner |
Autor: | Capel Salinas, Juan; Jarillo, José Antonio; Madueño Albi, Francisco CSIC ORCID; Jorquera, María J. CSIC; Martínez-Zapater, José M. CSIC ORCID; Salinas, Julio CSIC ORCID | Fecha de publicación: | 1998 | Editor: | John Wiley & Sons | Citación: | The Plant Journal 13(3): 411–418, (1998) | Resumen: | Low temperature treatment of dark-grown seedlings of Arabidopsis thaliana results in a rapid increase in the amount of mRNAs encoding for the major polypeptides of the light-harvesting complex of photosystem II (Lhcb1 genes). This increase is transient and seems to be due mainly to the accumulation of Lhcb1*3 transcripts, indicating that low temperature differentially regulates the expression of the Arabidopsis Lhcb1 gene family in the dark. A 1.34 kb fragment of the Lhcb1*3 promoter is sufficient to confer low temperature regulation to a reporter gene in transgenic Arabidopsis etiolated seedlings, suggesting that the regulation is occurring at the transcriptional level. The cold-induced accumulation of Lhcb1*3 mRNA is not part of a general response to stressful conditions since no accumulation is detected in response to water stress, anaerobiosis or salt stress. The amount of Lhcb1*3 mRNA decrease in response to exogenous abscisic acid (ABA) suggesting that this phytohormone acts as a negative regulator. Moreover, the accumulation of Lhcb1*3 mRNAs in cold-treated ABA deficient etiolated seedlings is higher than that of wild-type and ABA insensitive etiolated seedlings, indicating that low temperature regulation of Lhcb1*3 is not mediated by ABA. | Descripción: | PMID: 9680990 | Versión del editor: | http://dx.doi.org/10.1046/j.1365-313X.1998.00039.x | URI: | http://hdl.handle.net/10261/42968 | DOI: | 10.1046/j.1365-313X.1998.00039.x | ISSN: | 0960-7412 | E-ISSN: | 1365-313X |
Aparece en las colecciones: | (IBMCP) Artículos (EEZA) Artículos (INIA) Artículos |
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