Regulation of Seed Dormancy Cycling in Seasonal Field Environments
Advances in Plant Dormancy, Springer International Publishing Ag, ss.35-47, 2015
- Yayın Türü: Kitapta Bölüm / Araştırma Kitabı
- Basım Tarihi: 2015
- Doi Numarası: 10.1007/978-3-319-14451-1_2
- Yayınevi: Springer International Publishing Ag
- Sayfa Sayıları: ss.35-47
- Boğaziçi Üniversitesi Adresli: Evet
Özet
Seeds respond to a range of environmental signals, using them for both temporal and spatial sensing to alter their depth of dormancy to ensure germination takes place in a favorable habitat and climate space, and in the correct season. Many signals have the potential to inform the seed about its environment; we consider the effects of temperature as a temporal signal and both light and nitrate as spatial signals. A range of molecular mechanisms that regulate dormancy have been identified individually in controlled laboratory studies, but little is known about how this complex set of mechanisms is employed by the seed during dormancy cycling in variable field environments. We report on our published molecular ecophysiological studies of dormancy cycling in field soils with the winter annual Arabidopsis ecotype Cvi. In this work, we show how coordination of regulating mechanisms and signaling networks identified in the laboratory regulate seed dormancy in response to environmental signals in an ecological context.