Leaf senescence is not only genetically programmed but also induced by exogenous stress to ensure completion of the plant life cycle, successful reproduction and environmental adaptability. Genetic reprogramming is a major aspect of leaf senescence, and the senescence signaling that follows is controlled by a complex regulatory network. Recent studies suggest that the activity of transcription factors together with epigenetic mechanisms ensures the robustness of this network, with the latter including chromatin remodeling, DNA modification, and RNA-mediated control of transcription factors and other senescence-associated genes. In this review, we provide an overview of the relevant epigenetic mechanisms and summarize recent findings of epigenetic regulators of plant leaf senescence involved in DNA methylation and histone modification along with the functions of small RNAs in this process.
Bibliographical noteFunding Information:
We thank Rae Eden Yumul and Jin Hee Kim for providing valuable comments and editing the manuscript. This manuscript was supported by the Institute for Basic Science (IBS-R013-G2) and the Science Technology and Innovation Committee of Shenzhen Municipality (JCYJ20151116155209176, KQCX20150-33110464302, JCYJ20150630165133401).
© 2018 The Author(s).
All Science Journal Classification (ASJC) codes
- Plant Science