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
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Phytase overexpression in Arabidopsis improves plant growth under osmotic stress and in combination with phosphate deficiency.
TL;DR: It is demonstrated that the modulation of PA improves plant growth under osmotic stress, likely via stimulation of enzymatic and non-enzymatic antioxidant systems, and that beside its regulatory role in phosphate homeostasis, PA may be also involved in fine tuning osmosis stress response in plants.
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The Wound Healing Property of N-Methyl-(2S,4R)-trans-4-Hydroxy-L-Proline from Sideroxylon obtusifolium is Related to its Anti-Inflammatory and Antioxidant Actions.
Pedro Everson Alexandre de Aquino,Tamiris de Fátima Goebel de Souza,Flávia A. Santos,Ana Flávia Seraine Custódio Viana,Bianca Oliveira Louchard,Luzia Kalyne Almeida Moreira Leal,Talita Magalhães Rocha,Janaina Serra Azul Monteiro Evangelista,Nayara Coriolano de Aquino,Nylane M.N. Alencar,E.R. Silveira,Glauce Socorro de Barros Viana +11 more
TL;DR: NMP is shown to improve the wound healing process, by upregulating iNOS and COX-2 activities, reducing lipid peroxidation and MPO activity, and increasing GSH contents.
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Biofortification of soybean (Glycine max L.) with Se and Zn, and enhancing its physiological functions by spiking these elements to soil during flowering phase.
TL;DR: Joint Se/Zn application in increasing doses appeared to have a strong synergistic effect on accumulation of these elements in beans and enhanced the physiological functions of the soybean, which may significantly contribute to human health improvement in Se and Zn deficient regions.
Journal ArticleDOI
Identification of Factors Linked to Higher Water-Deficit Stress Tolerance in Amaranthus hypochondriacus Compared to Other Grain Amaranths and A. hybridus , Their Shared Ancestor
Tzitziki González-Rodríguez,Ismael Cisneros-Hernández,Jonathan Acosta Bayona,Enrique Ramírez-Chávez,Norma A. Martínez-Gallardo,Erika Mellado-Mojica,Mercedes Gpe. López-Pérez,Jorge Molina-Torres,John P. Délano-Frier +8 more
TL;DR: It is concluded that physiological modifications improved WDS in A. hypochondriacus by raising its water use efficiency and correlated with an enhanced osmotic adjustment (OA) and a stronger expression of abscisic acid (ABA) marker genes.
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NAC transcription factor expression, amino acid concentration and growth of elite rice cultivars upon salt stress
TL;DR: Both elite rice cultivars exhibit different expression patterns of NAC transcription factors as well as biochemical and physiological responses to salt stress, giving rise to better performance of Cotaxtla plants in comparison to Tres Ríos plants under the authors' experimental conditions.
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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