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
More filters
Journal ArticleDOI
Exogenous melatonin improves seed germination in Limonium bicolor under salt stress
TL;DR: The effect of salt stress on seed germination, melatonin concentration, and changes in the concentrations of nutrients, amylase activity, and hormones in L. bicolor seeds with and without pre-treatment with melatonin are examined.
Journal ArticleDOI
Host‐specific Nod‐factors associated with Medicago truncatula nodule infection differentially induce calcium influx and calcium spiking in root hairs
Giulia Morieri,Eduardo Andres Martinez,Andrzej Jarynowski,Hugues Driguez,Richard J. Morris,Giles E. D. Oldroyd,J. Allan Downie +6 more
TL;DR: It is concluded that Nod-factor perception differentially activates the two developmental pathways required for nodulation and that activation of the pathway involving the calcium influx is important for efficient infection.
Journal ArticleDOI
Fluctuation of Arabidopsis seed dormancy with relative humidity and temperature during dry storage
TL;DR: Temperature and relative humidity occurring during prolonged storage of freshly harvested Arabidopsis seeds control dormancy cycling and the expression of molecular regulators of this process.
Journal ArticleDOI
Dormancy removal of apple seeds by cold stratification is associated with fluctuation in H2O2, NO production and protein carbonylation level.
TL;DR: Analysis of the relationship between germinability of embryos isolated from cold or warm stratification and ROS or nitric oxide production and accumulation of protein carbonyl groups found fluctuation of H2O2 andprotein carbonylation seems to play a pivotal role in seed dormancy alleviation by cold stratification, while NO appears to be necessary for seed germination.
Journal ArticleDOI
Melatonin inhibits seed germination by crosstalk with abscisic acid, gibberellin, and auxin in Arabidopsis.
Yan Lv,Jinjing Pan,Houping Wang,Russel J. Reiter,Xia Li,Zongmin Mou,Jiemei Zhang,Zhengping Yao,Dake Zhao,Diqiu Yu +9 more
TL;DR: In this article, the authors showed that a low concentration (10 µM or 100 µM) of melatonin had no effect on seed germination, but when the concentration of Melatonin increased to 500 µm or 1000 µm, seed growth was significantly inhibited in Arabidopsis RNA sequencing analysis.
References
More filters
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.