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Eur J Cell Biol. 2010 Feb-Mar;89(2-3):133-7. doi: 10.1016/j.ejcb.2009.10.014. Epub 2009 Dec 9.

The complex regulation of WRKY53 during leaf senescence of Arabidopsis thaliana.

Author information

1
Center for Plant Molecular Biology (ZMBP), General Genetics, University of Tübingen, Auf der Morgenstelle 28, D-72076 Tübingen, Germany. ulrike.zentgraf@uni-tuebingen.de

Abstract

Many different agriculturally important traits, e.g. number and quality of seeds, timing of seed set, fruit ripening, are affected by senescence. Despite the importance of the senescence processes in plants, our knowledge on regulatory mechanisms of senescence is still poor. A central step is a massive reprogramming of the transcriptome, implying an important role of transcription factors. In Arabidopsis 12-16% of all genes are up- or down-regulated. WRKY transcription factors play a central role in controlling leaf senescence in Arabidopsis. One important member of this family, WRKY53, is tightly regulated by different unexpected mechanisms and is a convergence node between senescence and biotic and abiotic stress responses.

PMID:
20004496
DOI:
10.1016/j.ejcb.2009.10.014
[Indexed for MEDLINE]

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