Low temperature regulates Arabidopsis Lhcb gene expression in a light-independent manner

  1. Capel, J. 1
  2. Jarillo, J.A. 5
  3. Madueño, F. 4
  4. Jorquera, M.J. 3
  5. Martínez-Zapater, J.M. 2
  6. Salinas, J. 2
  1. 1 Universidad de Almería
    info

    Universidad de Almería

    Almería, España

    ROR https://ror.org/003d3xx08

  2. 2 Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria
    info

    Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria

    Madrid, España

    ROR https://ror.org/011q66e29

  3. 3 Estación Experimental de Zonas Áridas
    info

    Estación Experimental de Zonas Áridas

    Almería, España

    ROR https://ror.org/01hq59z49

  4. 4 Instituto de Biología Molecular y Celular de Plantas Primo Yufera
    info

    Instituto de Biología Molecular y Celular de Plantas Primo Yufera

    Valencia, España

    ROR https://ror.org/04zdays56

  5. 5 University of Pennsylvania
    info

    University of Pennsylvania

    Filadelfia, Estados Unidos

    ROR https://ror.org/00b30xv10

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Revista:
Plant Journal

ISSN: 0960-7412

Año de publicación: 1998

Volumen: 13

Número: 3

Páginas: 411-418

Tipo: Artículo

DOI: 10.1046/J.1365-313X.1998.00039.X PMID: 9680990 SCOPUS: 2-s2.0-0032005970 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Plant Journal

Repositorio institucional: lock_openAcceso abierto Editor

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.