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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Heavy Metal Stress and Some Mechanisms of Plant Defense Response
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Osmotic adjustment is a prime drought stress adaptive engine in support of plant production
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Arsenic uptake, toxicity, detoxification, and speciation in plants : physiological, biochemical, and molecular aspects
Ghulam Abbas,Behzad Murtaza,Irshad Bibi,Irshad Bibi,Muhammad Shahid,Nabeel Khan Niazi,Nabeel Khan Niazi,Nabeel Khan Niazi,Muhammad Imran Khan,Muhammad Amjad,Munawar Hussain,Natasha +11 more
TL;DR: This review highlights the importance of the As-induced generation of reactive oxygen species (ROS) as well as their damaging impacts on plants at biochemical, genetic, and molecular levels.
Journal ArticleDOI
Proline: a key player in plant abiotic stress tolerance
Gurpreet Kaur,Bavita Asthir +1 more
TL;DR: Proline acts as stress-related signal exhibiting cross tolerance to a range of different stresses and is found to be coupled to several key pathways such as pentose phosphate, tricarboxylic acid, or urea cycles and contributes to, i.e., purine synthesis and the phenylpropanoid pathway.
Journal ArticleDOI
Mechanisms of Plant Responses and Adaptation to Soil Salinity.
Chunzhao Zhao,Chunzhao Zhao,Heng Zhang,Chun-Peng Song,Jian-Kang Zhu,Jian-Kang Zhu,Sergey Shabala,Sergey Shabala +7 more
TL;DR: This review provides a comprehensive summary of the mechanisms of salt stress responses in plants, including salt stress-triggered physiological responses, oxidative stress, salt stress sensing and signaling pathways, organellar stress, ion homeostasis, hormonal and gene expression regulation, metabolic changes, as well as salt tolerance mechanisms in halophytes.
References
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Journal ArticleDOI
Effects of salt and proline on Medicago sativa callus
Ali Akbar Ehsanpour,N. Fatahian +1 more
TL;DR: The data obtained from experiments indicated that the responses of two Medicago cultivars was genotype dependent and addition of exogenous proline to the culture medium increased the dry weight and free proline content of callus.
Journal Article
Alleviation of drought-induced adverse effects in spring wheat (triticum aestivum l.) using proline as a pre-sowing seed treatment
TL;DR: Exogenous application of proline as a pre-sowing seed treatment improved shoot and root fresh and dry weights, shoot length and grain yield under both non-stress and stress conditions and total leaf area per plant only under stress conditions.
Journal ArticleDOI
Role of proline accumulation in response to toxic copper in chlorella sp. (chlorophyceae) cells
TL;DR: The results of the present study indicate that proline may exert some action on the cell surface and suggest that one function of accumulated proline is to reduce the uptake of metal ions.
Journal ArticleDOI
Proline antioxidant role in the common ice plant subjected to salinity and paraquat treatment inducing oxidative stress
TL;DR: The obtained data suggest that stress-induced accumulation of proline in the common ice plant has both osmoprotectory and antioxidant functions.
Ameliorating effect of foliar applied proline on nutrient uptake in water stressed maize (zea mays l.) plants
TL;DR: Exogenous application of proline counteracted the adverse effects of water stress on nutrient uptake because it promoted the uptake of K + , Ca 2+ , N and P in both maize cultivars.
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