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Open AccessJournal ArticleDOI

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 ...

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Biochemical and molecular responses of Rosa damascena mill. cv. Kashan to salicylic acid under salinity stress

TL;DR: In this paper , Salicylic acid (SA) is used as an intracellular and extracellular regulator of the plant response, which is known as one of the effective compounds.
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Pre-soaking in Weed Extracts is a Reasonable Approach to Mitigate Fusarium graminearum Infection in Wheat

TL;DR: Natural weed extracts as supplement to chemical antifungals can be safely employed to increase the growth rate and reconfigure the pathophysiological status of wheat seedlings by reducing the detrimental effects of F. graminearum infection.
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Longevity Regulation by Proline Oxidation in Yeast

TL;DR: In this article, the authors showed that proline oxidation, catalyzed by the proline oxidase Put1, a mitochondrial flavin-dependent enzyme converting proline into ∆1-pyrroline-5-carboxylate, controls the chronological lifespan of the yeast Saccharomyces cerevisiae.
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Inhibition of Recombinant Aldose-6-Phosphate Reductase from Peach Leaves by Hexose-Phosphates, Inorganic Phosphate and Oxidants.

TL;DR: The purification and characterization of recombinant Ald6PRase from peach leaves are shown and it is suggested that Ald 6PRase is finely regulated to control carbon partitioning in peach leaves.
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Rainfall does not impair particulate matter accumulation on peri-urban field crops, but improves photosynthetic activity at UV exposure.

TL;DR: In this paper, the authors investigated how climate change, i.e., rainfall, affects the particles' deposition on field crops and how UV radiation can influence crop-particulate pollution interaction with respect to the photosynthetic, and antioxidant activity and their effects on plant health of the economically important cereal crop barley grown at field conditions near a peri-urban environment.
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.
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ASCORBATE AND GLUTATHIONE: Keeping Active Oxygen Under Control

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.
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Roles of glycine betaine and proline in improving plant abiotic stress resistance

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

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.
Related Papers (5)
Trending Questions (2)
Why is proline important for turgur pressure regulation in plant?

Proline is important for turgor pressure regulation in plants as it helps maintain cell turgor or osmotic balance under stressful conditions.

What is the role of proline as a small-molecule metabolite biomarker?

The role of proline as a small-molecule metabolite biomarker is to act as an osmolyte, metal chelator, antioxidative defense molecule, and signaling molecule in plants under stress.