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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Chemical Derivatization of Metabolite Mass Profiling of the Recretohalophyte Aeluropus lagopoides Revealing Salt Stress Tolerance Mechanism
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COP1 plays a prominent role in drought stress tolerance in Arabidopsis and Pea
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Optimal Duration of Drought Stress Near Harvest for Promoting Bioactive Compounds and Antioxidant Capacity in Kale with or without UV-B Radiation in Plant Factories.
TL;DR: Drought for 3 days before harvest could achieve the highest potential value of kale as a source of natural antioxidants, and an optimal treatment time for maximum antioxidant production is determined.
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A Beginner’s Guide to Osmoprotection by Biostimulants
David Jiménez-Arias,Francisco J. García-Machado,Francisco J. García-Machado,Sarai Morales-Sierra,Ana L. García-García,Ana L. García-García,Antonio J. Herrera,Francisco Valdés,Juan C. Luis,Andrés A. Borges +9 more
TL;DR: A review of the state of the art in the field of biostimulant formulations can be found in this paper, where the most recent state-of-the-art is presented.
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Bridging Between Proline Structure, Functions, Metabolism, and Involvement in Organism Physiology
TL;DR: The role of proline in cellular homeostasis, including redox balance and energy status and their implication as biocatalyst for aldolase activity is reported, which could lead to new opportunities to improve plant tolerance against environmental stresses.
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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