The complex regulation of WRKY53 during leaf senescence of Arabidopsis thaliana.
The complex regulation of WRKY53 during leaf senescence of Arabidopsis thaliana.
复制标题
DOI：
10.1016/j.ejcb.2009.10.014
复制
发表时间：
2010-02
影响因子：
6.6
通讯作者：
U. Zentgraf;T. Laun;Y. Miao
中科院分区：
文献类型：
--
作者：
U. Zentgraf;T. Laun;Y. Miao
许多不同的农业重要性状，如种子的数量和质量、结实期、果实成熟等，都受到衰老的影响。尽管植物的衰老过程很重要，但我们对衰老的调控机制仍然知之甚少。一个核心步骤是转录组的大规模重编程，这意味着转录因子的重要作用。在拟南芥中，12-16%的基因被上调或下调。WRKY转录因子在拟南芥叶片衰老调控中起核心作用。该家族的一个重要成员WRKY53受到不同意想不到的机制的严格调控，是衰老与生物和非生物应激反应之间的趋同节点。
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.