Seed dormancy and the control of germination
TLDR
It is argued that adaptation has taken place on a theme rather than via fundamentally different paths and similarities underlying the extensive diversity in the dormancy response to the environment that controls germination are identified.Abstract:
Seed dormancy is an innate seed property that defines the environmental conditions in which the seed is able to germinate. It is determined by genetics with a substantial environmental influence which is mediated, at least in part, by the plant hormones abscisic acid and gibberellins. Not only is the dormancy status influenced by the seed maturation environment, it is also continuously changing with time following shedding in a manner determined by the ambient environment. As dormancy is present throughout the higher plants in all major climatic regions, adaptation has resulted in divergent responses to the environment. Through this adaptation, germination is timed to avoid unfavourable weather for subsequent plant establishment and reproductive growth. In this review, we present an integrated view of the evolution, molecular genetics, physiology, biochemistry, ecology and modelling of seed dormancy mechanisms and their control of germination. We argue that adaptation has taken place on a theme rather than via fundamentally different paths and identify similarities underlying the extensive diversity in the dormancy response to the environment that controls germination.read more
Citations
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Journal ArticleDOI
Calcium in plant defence-signalling pathways
TL;DR: This work focuses on calcium signalling in plant defence responses, particularly on the generation of the calcium signal and downstream calcium-dependent events participating in the establishment of defence responses with special reference to calcium-binding proteins.
Journal ArticleDOI
Abscisic acid dynamics, signaling, and functions in plants
Kong Chen,Guojun Li,Ray A. Bressan,Chun-Peng Song,Jian-Kang Zhu,Jian-Kang Zhu,Yang Zhao,Yang Zhao +7 more
TL;DR: The dynamics of ABA metabolic pools and signaling that affects many of its physiological functions are reviewed.
Journal ArticleDOI
The evolution of seeds
TL;DR: The recent flurry of research describing the comparative biology of seeds is discussed, and a special emphasis on the evolution of dormancy, the characteristic of seeds that allows for long 'distance' time travel is placed.
Journal ArticleDOI
Plant hormones and seed germination
TL;DR: This review article contains almost a complete set of details, which may affect seed biology during dormancy and growth, including the hormonal signaling of IAA and gibberellins and the significance of plant hormones.
Book ChapterDOI
Cold signalling and cold acclimation in plants
TL;DR: This review has focused on the genetic and signalling pathways activated early after cold exposure, and particularly on the MAP-kinase module, which has been shown to be involved in the cold response.
References
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Seeds. Ecology, Biogeography, and, Evolution of Dormancy and Germination 2nd ed
Carol C. Baskin,Jerry M. Baskin +1 more
Book
Seeds: Ecology, Biogeography, and, Evolution of Dormancy and Germination
Carol C. Baskin,Jerry M. Baskin +1 more
TL;DR: A Geographical Perspective on Germination Ecology: Tropical and Sub-tropical Zones as discussed by the authors, Temperate and Arctic Zones, and Semi-Arctic Zones: Temperate, Subtropical, and Arctic zones.
Journal ArticleDOI
Seeds: Physiology of Development and Germination.
Book
Seeds: Physiology of Development and Germination
J. D. Bewley,Michael Black +1 more
TL;DR: Seeds: Germination, Structure, and Composition; Development-Regulation and Maturation; Mobilization of Stored Seed Reserves; and some Ecophysiological Aspects.
Journal ArticleDOI
Seed Germination and Dormancy.
TL;DR: This review provides both an overview of the essential processes that are associated with germination and a description of the possible impediments thereto that may result in dormancy.