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Updated role of ABA in seed maturation, dormancy, and germination
- Source :
- Journal of Advanced Research, Journal of Advanced Research, Vol 35, Iss, Pp 199-214 (2022)
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- Graphical abstract<br />Highlights • Functional ABA biosynthesis genes show specific roles for ABA accumulation at different stages of seed development and seedling establishment. • De novo ABA biosynthesis during embryogenesis is required for late seed development, maturation, and induction of primary dormancy. • ABA plays multiple roles with the key LAFL hub to regulate various downstream signaling genes in seed and seedling development. • Key ABA signaling genes ABI3, ABI4, and ABI5 play important multiple functions with various cofactors during seed development such as de-greening, desiccation tolerance, maturation, dormancy, and seed vigor. • The crosstalk between ABA and other phytohormones are complicated and important for seed development and seedling establishment.<br />Background Seed is vital for plant survival and dispersion, however, its development and germination are influenced by various internal and external factors. Abscisic acid (ABA) is one of the most important phytohormones that influence seed development and germination. Until now, impressive progresses in ABA metabolism and signaling pathways during seed development and germination have been achieved. At the molecular level, ABA biosynthesis, degradation, and signaling genes were identified to play important roles in seed development and germination. Additionally, the crosstalk between ABA and other hormones such as gibberellins (GA), ethylene (ET), Brassinolide (BR), and auxin also play critical roles. Although these studies explored some actions and mechanisms by which ABA-related factors regulate seed morphogenesis, dormancy, and germination, the complete network of ABA in seed traits is still unclear. Aim of review Presently, seed faces challenges in survival and viability. Due to the vital positive roles in dormancy induction and maintenance, as well as a vibrant negative role in the seed germination of ABA, there is a need to understand the mechanisms of various ABA regulators that are involved in seed dormancy and germination with the updated knowledge and draw a better network for the underlying mechanisms of the ABA, which would advance the understanding and artificial modification of the seed vigor and longevity regulation. Key scientific concept of review Here, we review functions and mechanisms of ABA in different seed development stages and seed germination, discuss the current progresses especially on the crosstalk between ABA and other hormones and signaling molecules, address novel points and key challenges (e.g., exploring more regulators, more cofactors involved in the crosstalk between ABA and other phytohormones, and visualization of active ABA in the plant), and outline future perspectives for ABA regulating seed associated traits.
- Subjects :
- 0301 basic medicine
Medicine (General)
Science (General)
Desiccation tolerance
Germination
Biology
Q1-390
03 medical and health sciences
chemistry.chemical_compound
R5-920
0302 clinical medicine
Auxin
Agricultural Science
Abscisic acid
Seed morphogenesis
ComputingMethodologies_COMPUTERGRAPHICS
Brassinolide
chemistry.chemical_classification
Multidisciplinary
organic chemicals
fungi
Seed dormancy
food and beverages
Plant Dormancy
Seed development, Seedling establishment
Gibberellins
Cell biology
Phytohormones
030104 developmental biology
chemistry
030220 oncology & carcinogenesis
Seeds
Embryogenesis
Dormancy
Gibberellin
Abscisic Acid
Subjects
Details
- ISSN :
- 20901232
- Volume :
- 35
- Database :
- OpenAIRE
- Journal :
- Journal of Advanced Research
- Accession number :
- edsair.doi.dedup.....2062914eb6434317f048fa15b2c36c0b