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
Plant plasma membrane-resident receptors: Surveillance for infections and coordination for growth and development.
TL;DR: Recent knowledge advance is discussed in understanding the roles of RLKs and RLPs in plant growth, development, and immunity, and their connection with co-regulatory receptors, leading to activation of diverse intracellular signaling pathways.
Journal ArticleDOI
Expression of ABA signalling genes and ABI5 protein levels in imbibed Sorghum bicolor caryopses with contrasting dormancy and at different developmental stages.
María Verónica Rodríguez,Guillermina M. Mendiondo,Laura Maskin,Gustavo Eduardo Gudesblat,Norberto D. Iusem,Roberto L. Benech-Arnold +5 more
TL;DR: Several genes involved in ABA signalling are regulated differently in imbibed caryopses from two sorghum lines with contrasting pre-harvest sprouting response before - but not after - physiological maturity, supporting a role for the seed coat in regulating ABI5 levels.
Journal ArticleDOI
Developmental mechanisms underlying variable, invariant and plastic phenotypes
TL;DR: Changes in a phenotype in response to the environment, or phenotypic variability within an environment, may also be delivered consistently, in contrast to the view of robustness as being the ability of a genotype to produce a single, invariant phenotype.
Journal ArticleDOI
An investigation to enhance understanding of the stimulation of weed seedling emergence by soil disturbance
Brian J. Schutte,Bradley J. Tomasek,Adam S. Davis,Lars Andersson,D. L. Benoit,Alicia Cirujeda,Jack Dekker,Frank Forcella,José Luis González-Andújar,F. Graziani,Alistair J. Murdoch,Paul Neve,Ilse A. Rasmussen,B. Sera,Jukka Salonen,Francesco Tei,K. S. Tørresen,J. M. Urbano +17 more
TL;DR: Local populations exhibited reduced variance in total emergence measured within sites and across SSD treatments, suggesting that C. album adaptation to local pedo-climatic conditions involves increased consistency in SSD-induced emergence.
Journal ArticleDOI
The hydrogen sulfide signal enhances seed germination tolerance to high temperatures by retaining nuclear COP1 for HY5 degradation.
Zhen Chen,Yawen Huang,Wenjuan Yang,Guanxiao Chang,Ping Li,Jiali Wei,Xiaojun Yuan,Jingling Huang,Xiangyang Hu +8 more
TL;DR: A novel role for the H2S signal is revealed in the modulation of seed germination thermotolerance through the nucleocytoplasmic partitioning of COP1 and the downstream HY5 and ABI5 pathways.
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.