Role of ethylene and proteolytic N‐degron pathway in the regulation of Arabidopsis seed dormancy

2021 ◽  
Author(s):  
Xu Wang ◽  
Malaika Maraya Gomes ◽  
Christophe Bailly ◽  
Eiji Nambara ◽  
Françoise Corbineau
Keyword(s):  
Seed Dormancy ◽  
Arabidopsis Seed

scholarly journals Role of Reactive Oxygen Species in the Regulation of Arabidopsis Seed Dormancy

2011 ◽  
Vol 53 (1) ◽  
pp. 96-106 ◽  
Author(s):  
Juliette Leymarie ◽  
Giedré Vitkauskaité ◽  
Hai Ha Hoang ◽  
Emmanuel Gendreau ◽  
Virginie Chazoule ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Seed Dormancy ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Arabidopsis Seed

Regulation of seed dormancy by abscisic acid and DELAY OF GERMINATION 1

2015 ◽  
Vol 25 (2) ◽  
pp. 82-98 ◽  
Author(s):  
Bas J.W. Dekkers ◽  
Leónie Bentsink
Keyword(s):  
Abscisic Acid ◽  
Seed Dormancy ◽  
Plant Hormone ◽  
Complex Trait ◽  
Hormone Interactions ◽  
Physiological Dormancy ◽  
Recent Developments ◽  
Radicle Emergence ◽  
Dormancy Induction

AbstractPhysiological dormancy has been described as a physiological inhibiting mechanism that prevents radicle emergence. It can be caused by the embryo (embryo dormancy) as well as by the structures that cover the embryo. One of its functions is to time plant growth and reproduction to the most optimal season and therefore, in nature, dormancy is an important adaptive trait that is under selective pressure. Dormancy is a complex trait that is affected by many loci, as well as by an intricate web of plant hormone interactions. Moreover, it is strongly affected by a multitude of environmental factors. Its induction, maintenance, cycling and loss come down to the central paradigm, which is the balance between two key hormonal regulators, i.e. the plant hormone abscisic acid (ABA), which is required for dormancy induction, and gibberellins (GA), which are required for germination. In this review we will summarize recent developments in dormancy research (mainly) in the model plant Arabidopsis thaliana, focusing on two key players for dormancy induction, i.e. the plant hormone ABA and the DELAY OF GERMINATION 1 (DOG1) gene. We will address the role of ABA and DOG1 in relation to various aspects of seed dormancy, i.e. induction during seed maturation, loss during dry seed afterripening, the rehydrated state (including dormancy cycling) and the switch to germination.

scholarly journals Distribution of seed dormancy classes across a fire-prone continent: effects of rainfall seasonality and temperature

2020 ◽  
Author(s):  
Justin C Collette ◽  
Mark K J Ooi
Keyword(s):  
Seed Dormancy ◽  
Critical Role ◽  
Fire Regimes ◽  
Common Species ◽  
Functional Responses ◽  
Stochastic Disturbance ◽  
Climate Gradients ◽  
Selective Pressures ◽  
Rainfall Seasonality

Abstract Background and Aims Different seed dormancy classes control the timing of germination via different cues. The ecological dissimilarities between classes therefore suggest that they are likely to be subject to different selective pressures, and that species within each class will have diverse functional responses. We aimed to investigate this by assessing how variation in the distribution of dormancy classes is correlated with regional environmental factors, in particular rainfall seasonality and temperature. Additionally, we compare the relative proportions of species with physiological (PD) or physical (PY) dormancy to assess whether dormancy class influences their ability to persist under different rainfall seasonality regimes. Methods Dormancy class was assigned for 3990 species from 281 genera occurring across two climate regions, with either winter or aseasonal rainfall, across temperate fire-prone Australia. All regions have similar vegetation and fire regimes. Using a Bayesian framework, we compared the distribution of dormancy classes across temperature and rainfall climate gradients, for threatened and common species. Key Results A high dormant:non-dormant species ratio highlighted the critical role of dormancy across our study regions. Critically, species showing PD were more likely to be threatened in aseasonal rainfall climate regions. Conclusions Our results support the assumption that dormancy is favoured in environments with stochastic disturbance

scholarly journals The Role of CAX1 and CAX3 in Elemental Distribution and Abundance in Arabidopsis Seed

2011 ◽  
Vol 158 (1) ◽  
pp. 352-362 ◽  
Author(s):  
Tracy Punshon ◽  
Kendal Hirschi ◽  
Jian Yang ◽  
Antonio Lanzirotti ◽  
Barry Lai ◽  
...  
Keyword(s):  
Elemental Distribution ◽  
Arabidopsis Seed

scholarly journals The role of COBRA ‐ LIKE 2 function, as part of the complex network of interacting pathways regulating Arabidopsis seed mucilage polysaccharide matrix organization

2018 ◽  
Vol 94 (3) ◽  
pp. 497-512 ◽  
Author(s):  
Daniela Ben‐Tov ◽  
Anat Idan‐Molakandov ◽  
Anat Hugger ◽  
Ilan Ben‐Shlush ◽  
Markus Günl ◽  
...  
Keyword(s):  
Complex Network ◽  
Arabidopsis Seed ◽  
Matrix Organization ◽  
Polysaccharide Matrix ◽  
Seed Mucilage

scholarly journals The Mechanisms Involved in Seed Dormancy Alleviation by Hydrogen Cyanide Unravel the Role of Reactive Oxygen Species as Key Factors of Cellular Signaling during Germination

2009 ◽  
Vol 150 (1) ◽  
pp. 494-505 ◽  
Author(s):  
Krystyna Oracz ◽  
Hayat El-Maarouf-Bouteau ◽  
Ilse Kranner ◽  
Renata Bogatek ◽  
Françoise Corbineau ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Seed Dormancy ◽  
Hydrogen Cyanide ◽  
Cellular Signaling ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Key Factors

scholarly journals Seed dormancy and germination changes of snowbed species under climate warming: the role of pre- and post-dispersal temperatures

2016 ◽  
Vol 118 (3) ◽  
pp. 529-539 ◽  
Author(s):  
Giulietta Bernareggi ◽  
Michele Carbognani ◽  
Andrea Mondoni ◽  
Alessandro Petraglia
Keyword(s):  
Seed Dormancy ◽  
Climate Warming ◽  
Seed Dormancy And Germination

Mapping diploid wheat homologues of Arabidopsis seed ABA signaling genes and QTLs for seed dormancy

2007 ◽  
Vol 114 (7) ◽  
pp. 1129-1139 ◽  
Author(s):  
Shingo Nakamura ◽  
Takao Komatsuda ◽  
Hideho Miura
Keyword(s):  
Seed Dormancy ◽  
Diploid Wheat ◽  
Aba Signaling ◽  
Arabidopsis Seed
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