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- Title
Petal senescence: a hormone view.
- Authors
Nan Ma; Chao Ma; Yang Liu; Shahid, Muhammad Owais; Chengpeng Wang; Junping Gao
- Abstract
Flowers are highly complex organs that have evolved to enhance the reproductive success of angiosperms. As a key component of flowers, petals play a vital role in attracting pollinators and ensuring successful pollination. Having fulfilled this function, petals senesce through a process that involves many physiological and biochemical changes that also occur during leaf senescence. However, petal senescence is distinct, due to the abundance of secondary metabolites in petals and the fact that petal senescence is irreversible. Various phytohormones are involved in regulating petal senescence, and are thought to act both synergistically and antagonistically. In this regard, there appears to be developmental point during which such regulatory signals are sensed and senescence is initiated. Here, we review current understanding of petal senescence, and discuss associated regulatory mechanisms involving hormone interactions and epigenetic regulation.
- Subjects
PLANT reproduction; INFLORESCENCES; PLANT physiology; PLANT growth; ANGIOSPERMS; FLOWERS
- Publication
Journal of Experimental Botany, 2018, Vol 69, Issue 4, p719
- ISSN
0022-0957
- Publication type
Article
- DOI
10.1093/jxb/ery009