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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Journal ArticleDOI
The Apoplast: A Key Player in Plant Survival.
Atefeh Farvardin,Ana I. González-Hernández,Eugenio Llorens,Pilar García-Agustín,Loredana Scalschi,Begonya Vicedo +5 more
TL;DR: The diversity of molecules found in the apoplast highlights its importance in the survival of plant cells.
Journal ArticleDOI
Exogenous proline significantly affects the plant growth and nitrogen assimilation enzymes activities in rice (Oryza sativa) under salt stress
TL;DR: The ability of proline in mitigating salt stress-induced damages was correlated with the changes in nitrogen assimilation activities, suggesting that the NO3− content, NR, and GS activities played important roles in regulating nitrogen metabolism under salt stress.
Book ChapterDOI
Plant Responses to Drought Stress: Physiological, Biochemical and Molecular Basis
TL;DR: The present chapter describes the strategies used by plants to adapt to low water potential at physiological, biochemical and molecular levels and the strategies involving genetic engineering used by breeders in order to obtain crop varieties with improved drought tolerance.
Journal ArticleDOI
Plant beneficial rhizospheric microorganisms (PBRMs) mitigate deleterious effects of salinity in sesame (Sesamum indicum L.): Physio-biochemical properties, fatty acids composition and secondary metabolites content
TL;DR: In this paper, the interactive effects of Azospirillum lipoferum and Piriformospora indica on growth attributes and secondary metabolites production of sesame (Sesamum indicum L.) under saline condition were investigated.
Journal ArticleDOI
Genome-Wide Associations of Chlorophyll Fluorescence OJIP Transient Parameters Connected With Soil Drought Response in Barley.
TL;DR: This work allowed us to conclude that drought treatment differentiates the studied lines through the revealing of relationships between water content and the damages to PSII reaction centers or different components of PSII energy transfer chain.
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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