Role of proline under changing environments: a review.
TLDR
Review of the literature indicates that a stressful environment results in an overproduction of proline in plants which in turn imparts stress tolerance by maintaining cell turgor or osmotic balance; stabilizing membranes thereby preventing electrolyte leakage; and bringing concentrations of reactive oxygen species within normal ranges, thus preventing oxidative burst in plants.Abstract:
When exposed to stressful conditions, plants accumulate an array of metabolites, particularly amino acids. Amino acids have traditionally been considered as precursors to and constituents of proteins, and play an important role in plant metabolism and development. A large body of data suggests a positive correlation between proline accumulation and plant stress. Proline, an amino acid, plays a highly beneficial role in plants exposed to various stress conditions. Besides acting as an excellent osmolyte, proline plays three major roles during stress, i.e., as a metal chelator, an antioxidative defense molecule and a signaling molecule. Review of the literature indicates that a stressful environment results in an overproduction of proline in plants which in turn imparts stress tolerance by maintaining cell turgor or osmotic balance; stabilizing membranes thereby preventing electrolyte leakage; and bringing concentrations of reactive oxygen species (ROS) within normal ranges, thus preventing oxidative burst ...read more
Citations
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Book ChapterDOI
Effect of Hydrogen Sulfide on Osmotic Adjustment of Plants Under Different Abiotic Stresses
TL;DR: In this article, it has been proved that H2S has immense role to play in abiotic stress responses in plants, and it can induce the accumulation of a range of plant osmolytes like proline, glycine betaine, polyamines, sugars, inorganic ions, etc.
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Differential drought tolerance responses in short-grain aromatic rice germplasms from Koraput valley of Eastern Ghats of India
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Genetic and Physiological Aspects of Drought Tolerance in Smooth Bromegrass
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Dualistic effects of bisphenol A on growth, photosynthetic and oxidative stress of duckweed (Lemna minor)
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The role of CDPKs in plant development, nutrient and stress signaling
Simon Dekomah,Zhenzhen Bi,Richard Dormatey,Yihao Wang,Fasih Haider,Chao Sun,Panfeng Yao,Jiang-Ping Bai +7 more
TL;DR: An overview of the signal transduction mechanisms and functional roles of CDPKs is provided and includes details on the regulation of secondary metabolites, nutrient uptake, regulation of flower development, hormonal regulation, and biotic and abiotic stress responses.
References
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Journal ArticleDOI
Oxidative stress, antioxidants and stress tolerance
TL;DR: Key steps of the signal transduction pathway that senses ROIs in plants have been identified and raise several intriguing questions about the relationships between ROI signaling, ROI stress and the production and scavenging ofROIs in the different cellular compartments.
Journal ArticleDOI
ASCORBATE AND GLUTATHIONE: Keeping Active Oxygen Under Control
Graham Noctor,Christine H. Foyer +1 more
TL;DR: A detailed account of current knowledge of the biosynthesis, compartmentation, and transport of these two important antioxidants, with emphasis on the unique insights and advances gained by molecular exploration are provided.
Journal ArticleDOI
Roles of glycine betaine and proline in improving plant abiotic stress resistance
Muhammad Ashraf,Majid R. Foolad +1 more
TL;DR: In this review article, numerous examples of successful application of these compounds to improve plant stress tolerance are presented and a better understanding of the mechanisms of action of exogenously applied GB and proline is expected to aid their effective utilization in crop production in stress environments.
Journal ArticleDOI
Proline: a multifunctional amino acid
László Szabados,Arnould Savouré +1 more
TL;DR: The compartmentalization of proline biosynthesis, accumulation and degradation in the cytosol, chloroplast and mitochondria is discussed and the role of prolines in cellular homeostasis, including redox balance and energy status, is described.
Journal ArticleDOI
Genes and salt tolerance: bringing them together.
TL;DR: This review lists some candidate genes for salinity tolerance, and draws together hypotheses about the functions of these genes and the specific tissues in which they might operate.
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