Plant Mol Biol (2013) 82:503–504 DOI 10.1007/s11103-013-0098-0 PREF ACE Su-Sheng Gan Stefan Ho ¨ rtensteiner Published online: 12 July 2013 Springer Science+Business Media Dordrecht 2013 Senescence in plants refers to unique terminal active bio- made. Ho ¨ rtensteiner (2012) has now offered an update in logical processes leading to the ultimate attrition of a leaf, a this regard. Systems biology is a new holistic approach to ﬂower, a fruit or even a whole plant. In our view, as shown many aspects of biomedical and biological processes below, senescence has two ‘‘domains’’: one is the ‘‘sense’’ including plant senescence, and Guo (2012) has summa- domain and the other is the ‘‘science’’ domain, especially rized the most current understandings of leaf senescence when an ‘‘I’’ is inserted (to ‘‘inhibit’’ senescence), it forms resulting from the use of this approach. Epigenetics rep- a perfect ‘‘science’’ domain. resents another most hot area in life science. Humbeck (2012) reviews the current evidence that leaf senescence is regulated through epigenetic processes. Thus, several epi- genetic mutants were shown to exhibit a senescence phe- notype and the processes to be involved include global chromatin structure changes, senescence-speciﬁc histone modiﬁcations and changes in DNA methylation. It is
Plant Molecular Biology – Springer Journals
Published: Jul 12, 2013
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