scholarly journals Genetic Analysis of Abscisic Acid Signal Transduction

1997 ◽  
Vol 114 (3) ◽  
pp. 751-757 ◽  
Author(s):  
S. Merlot ◽  
J. Giraudat
Keyword(s):  
Signal Transduction ◽  
Abscisic Acid ◽  
Genetic Analysis

scholarly journals Roles of Glutathione in Mediating Abscisic Acid Signaling and Its Regulation of Seed Dormancy and Drought Tolerance

Genes ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1620
Author(s):  
Murali Krishna Koramutla ◽  
Manisha Negi ◽  
Belay T. Ayele
Keyword(s):  
Signal Transduction ◽  
Abscisic Acid ◽  
Seed Dormancy ◽  
Growth And Development ◽  
Current Knowledge ◽  
Stomatal Closure ◽  
Redox Homeostasis ◽  
Critical Role ◽  
Stress Conditions ◽  
Signal Perception

Plant growth and development and interactions with the environment are regulated by phytohormones and other signaling molecules. During their evolution, plants have developed strategies for efficient signal perception and for the activation of signal transduction cascades to maintain proper growth and development, in particular under adverse environmental conditions. Abscisic acid (ABA) is one of the phytohormones known to regulate plant developmental events and tolerance to environmental stresses. The role of ABA is mediated by both its accumulated level, which is regulated by its biosynthesis and catabolism, and signaling, all of which are influenced by complex regulatory mechanisms. Under stress conditions, plants employ enzymatic and non-enzymatic antioxidant strategies to scavenge excess reactive oxygen species (ROS) and mitigate the negative effects of oxidative stress. Glutathione (GSH) is one of the main antioxidant molecules playing a critical role in plant survival under stress conditions through the detoxification of excess ROS, maintaining cellular redox homeostasis and regulating protein functions. GSH has recently emerged as an important signaling molecule regulating ABA signal transduction and associated developmental events, and response to stressors. This review highlights the current knowledge on the interplay between ABA and GSH in regulating seed dormancy, germination, stomatal closure and tolerance to drought.

Abscisic acid resistant mutants in the fern Ceratopteris: characterization and genetic analysis

1985 ◽  
Vol 63 (9) ◽  
pp. 1582-1585 ◽  
Author(s):  
Leslie G. Hickok
Keyword(s):  
Abscisic Acid ◽  
Genetic Analysis ◽  
Sexual Differentiation ◽  
Double Mutant ◽  
Acid Resistance ◽  
The Other ◽  
Additive Effects ◽  
Wild Type ◽  
Resistant Mutants ◽  
Moderate Resistance

Abscisic acid normally inhibits growth and male sexual differentiation (antheridia formation) in gametophytes of the fern Ceratopteris. Abscisic acid resistant mutants show increased growth and sexual differentiation in comparison with the wild type when cultured in the presence of abscisic acid. Two different mutants that confer resistance to the effects of abscisic acid have been fully characterized. One shows moderate resistance and the other strong resistance. The mutations involve separate but linked loci. Recombination between the loci yields double mutant (cis) recombinants that exhibit additive effects and show exceptional levels of abscisic acid resistance.

scholarly journals Genetic Analysis of Gibberellin Signal Transduction

1996 ◽  
Vol 112 (1) ◽  
pp. 11-17 ◽  
Author(s):  
S. M. Swain ◽  
N. E. Olszewski
Keyword(s):  
Signal Transduction ◽  
Genetic Analysis
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