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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MicroRNA156 improves drought stress tolerance in alfalfa (Medicago sativa) by silencing SPL13.
Muhammad Arshad,Biruk A. Feyissa,Biruk A. Feyissa,Lisa Amyot,Banyar Aung,Abdelali Hannoufa,Abdelali Hannoufa +6 more
TL;DR: Results reveal that miR156 improves drought tolerance in alfalfa at least partially by silencing SPL13, and an enhanced accumulation of compatible solute and increased levels of abscisic acid (ABA) and antioxidants in miR 156OE genotypes.
Journal ArticleDOI
Soil Selenium (Se) Biofortification Changes the Physiological, Biochemical and Epigenetic Responses to Water Stress in Zea mays L. by Inducing a Higher Drought Tolerance.
Marika Bocchini,Roberto D’Amato,Simona Ciancaleoni,Maria Chiara Fontanella,Carlo Alberto Palmerini,Gian Maria Beone,Andrea Onofri,Valeria Negri,Gianpiero Marconi,Emidio Albertini,Daniela Businelli +10 more
TL;DR: The effects of exogenous Se supply on physiological and biochemical processes that may influence yield and quality of maize under drought stress conditions are reported and Se may be an activator of particular classes of genes that are involved in tolerance to abiotic stresses.
Journal ArticleDOI
Proline Accumulation Influenced by Osmotic Stress in Arbuscular Mycorrhizal Symbiotic Plants
TL;DR: This review comprehensively addresses the observable facts pertaining to proline accumulation upon AMF association and adherence relevant to stress tolerance and host plant efficiency and efficacy.
Journal ArticleDOI
Ascophyllum nodosum extract biostimulants and their role in enhancing tolerance to drought stress in tomato plants.
TL;DR: The three ANE biostimulants evaluated were found to provide different levels of tolerance to drought stressed tomato plants, with the level of drought tolerance provided related to changes in the concentration of osmolytes and expression of tas14 dehydrin gene.
Journal ArticleDOI
Physiological and biochemical mechanisms associated with trehalose-induced copper-stress tolerance in rice
TL;DR: Modifying the endogenous Tre content by Tre pretreatment improved Cu tolerance in rice plants by inhibiting Cu uptake and regulating the antioxidant and glyoxalase systems, and thereby demonstrated the important role of Tre in mitigating heavy metal toxicity.
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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