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
Dormancy-specific imprinting underlies maternal inheritance of seed dormancy in Arabidopsis thaliana
Urszula Piskurewicz,Mayumi Iwasaki,Daichi Susaki,Christian Megies,Tetsu Kinoshita,Luis Lopez-Molina +5 more
TL;DR: This work provides direct evidence that imprinted genes play a role in regulating germination processes and that preferential maternal allelic expression can implement maternal inheritance of seed dormancy levels.
Journal ArticleDOI
On the role of abscisic acid in seed dormancy of red rice
TL;DR: It is suggested that ABA plays a key role in integrating the dormancy-specific developmental signals with the control of growth, and unidentified developmental effectors that are specific to dormancy appear to stimulate ABA synthesis and to enforce the responsiveness to this phytohormone.
Journal ArticleDOI
Insights into the correlation between Physiological changes in and seed development of tartary buckwheat (Fagopyrum tataricum Gaertn.)
Moyang Liu,Zhaotang Ma,Tianrun Zheng,Wenjun Sun,Yanjun Zhang,Weiqiong Jin,Junyi Zhan,Yuntao Cai,Yujia Tang,Qi Wu,Zizhong Tang,Tongliang Bu,Chenglei Li,Hui Chen +13 more
TL;DR: The development of tartary buckwheat seeds was characterized using light and electron microscopy and measured phytohormone and nutrient accumulation by using high performance liquid chromatography and profiling the expression of key genes using RNA sequencing with the support of the tartary Buckwheat genome revealed novel molecular insights into the correlations between the physiological changes and seed development of Tartary buckWheat.
Journal ArticleDOI
Ethylene activates a plasma membrane Ca2+‐permeable channel in tobacco suspension cells
TL;DR: The results indicate that an elevation of [Ca(2+)](c), resulting from activation of the plasma membrane Ca(2+))-permeable channels by ethylene, is an essential component in ethylene signaling in plants.
Journal ArticleDOI
Seed priming with hormones does not alleviate induced oxidative stress in maize seedlings subjected to salt stress
Rogério F. Carvalho,Fernando Angelo Piotto,Daiana Schmidt,Leila Priscila Peters,Carolina C. Monteiro,Ricardo Antunes Azevedo +5 more
TL;DR: The enhanced biomass of maize seedlings under salt stress that was observed only from ET priming indicates that the stress tolerance in maize from ethylene priming is a fundamental process for stress tolerance acquisition, which is explained, however, by other biochemical mechanisms but not by changes in the antioxidant system.
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.