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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Assessment of changes in physiological and biochemical traits in four pistachio rootstocks under drought, salinity and drought + salinity stresses
TL;DR: For the first time, it is proven that K+ ion content has a positive correlation with the ascorbate peroxidase, polyphenol oxidase, catalase and guaiacol per oxidase enzymes activities under drought + salinity stress.
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Effect of Arbuscular Mycorrhizal Fungi, Selenium and Biochar on Photosynthetic Pigments and Antioxidant Enzyme Activity Under Arsenic Stress in Mung Bean (Vigna radiata).
Mohammad Zahangeer Alam,Mohammad Zahangeer Alam,Mohammad Zahangeer Alam,Rebecca J. McGee,Rebecca J. McGee,Md. Anamul Hoque,Golam Jalal Ahammed,Lynne Carpenter-Boggs +7 more
TL;DR: It is concluded that BC, AMF, and Se are all highly effective in enhancing antioxidant defenses as well as the nutritional quality of mung bean crops under As stress.
Journal ArticleDOI
Role of proline and GABA in sexual reproduction of angiosperms
Marco Biancucci,Roberto Mattioli,Giuseppe Forlani,Dietmar Funck,Paolo Costantino,Maurizio Trovato +5 more
TL;DR: Current knowledge on the roles of proline and GABA in plant fertility is surveyed, and future perspectives potentially capable of improving understanding on the functions of these amino acids in pollen development, pollination, and pollen tube guidance are discussed.
Journal ArticleDOI
Is soil contamination by a glyphosate commercial formulation truly harmless to non-target plants? - Evaluation of oxidative damage and antioxidant responses in tomato.
TL;DR: It is unequivocally demonstrated that soil contamination by GLY, applied as part of its commercial formulation Roundup® UltraMax, impairs the growth and physiological performance of tomato plants, and likely of other non-target plant species, after 28 days of exposure by clearly affecting the normal redox homeostasis.
Journal ArticleDOI
Nitric oxide-mediated cross-talk of proline and heat shock proteins induce thermotolerance in Vicia faba L.
Saud Alamri,Manzer H. Siddiqui,Mutahhar Y. Al-Khaishany,M. Nasir Khan,Hayssam M. Ali,Khaled A. Al-Akeel +5 more
TL;DR: In this article, the performance of faba beans (Vicia faba L), genotype C5, was tested to explore the biosynthesis of proline (Pro) in response to heat stress (HS) and the involvement of nitric oxide (NO) and Pro in thermotolerance mechanism and the role of heat shock proteins (HSPs) and proline in defense, and their correlation with the tolerance of fababa bean plant to HS.
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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