The Role of Beneficial Elements in Mitigation of Plant Osmotic Stress

2019 ◽  
pp. 849-854
Author(s):  
Maryam Mozafariyan Meimandi ◽  
Noémi Kappel ◽  
Mohammad Pessarakli
Keyword(s):  
Osmotic Stress ◽  
Beneficial Elements

scholarly journals NMR and LC-MS-Based Metabolomics to Study Osmotic Stress in Lignan-Deficient Flax

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 767
Author(s):  
Kamar Hamade ◽  
Ophélie Fliniaux ◽  
Jean-Xavier Fontaine ◽  
Roland Molinié ◽  
Elvis Otogo Nnang ◽  
...  
Keyword(s):  
Stress Response ◽  
Osmotic Stress ◽  
Biosynthetic Pathway ◽  
Potential Role ◽  
Plant Secondary Metabolites ◽  
Wild Type ◽  
Osmotic Stress Response ◽  
Transgenic Flax ◽  
Insight Into

Lignans, phenolic plant secondary metabolites, are derived from the phenylpropanoid biosynthetic pathway. Although, being investigated for their health benefits in terms of antioxidant, antitumor, anti-inflammatory and antiviral properties, the role of these molecules in plants remains incompletely elucidated; a potential role in stress response mechanisms has been, however, proposed. In this study, a non-targeted metabolomic analysis of the roots, stems, and leaves of wild-type and PLR1-RNAi transgenic flax, devoid of (+) secoisolariciresinol diglucoside ((+) SDG)—the main flaxseed lignan, was performed using 1H-NMR and LC-MS, in order to obtain further insight into the involvement of lignan in the response of plant to osmotic stress. Results showed that wild-type and lignan-deficient flax plants have different metabolic responses after being exposed to osmotic stress conditions, but they both showed the capacity to induce an adaptive response to osmotic stress. These findings suggest the indirect involvement of lignans in osmotic stress response.

Major Compatible Solutes and Structural Adaptation of Proteins in Extremophiles

2022 ◽  
pp. 161-186
Author(s):  
Hardik Shah ◽  
Khushbu Panchal ◽  
Amisha Panchal
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Osmotic Stress ◽  
Amino Acid Composition ◽  
Scientific Community ◽  
Compatible Solutes ◽  
Organic Solutes ◽  
Structural Adaptation ◽  
Extreme Habitats

Extremophiles are the most ancient microbes on the Earth and also a center of attraction for the scientific community for research because of their ability to adapt to extreme habitats. Compatible solutes are among those factors which enable these microorganisms to thrive in such extreme habitats. Under osmotic stress, the majority of extremophiles accumulate specific organic solutes such as amino acids, sugars, polyols, and their derivatives. In addition, proteins in extremophiles are found to be evolved by changing their amino acid composition to alter the hydrophobicity of its core and surface charge to maintain activity. This chapter encompasses a comprehensive study about the role of various compatible solutes in the endurance of microorganisms under extremophilic conditions, synthesis of compatible solutes, nature of extremophilic proteins, and their applications. Furthermore, an attempt has been made to cover various strategies adopted by the scientific community while pursuing research on compatible solutes.

Role of Taurine in Cellular Volume Regulation in Erythrocytes of Air-Breathing Catfish (Clarias magur) Under Osmotic Stress

2019 ◽  
Vol 89 (4) ◽  
pp. 1389-1397
Author(s):  
Bodhisattwa Banerjee ◽  
Debaprasad Koner ◽  
Priyanka Lal ◽  
Suman Kumari ◽  
Rubaiya Hasan ◽  
...  
Keyword(s):  
Osmotic Stress ◽  
Volume Regulation ◽  
Air Breathing ◽  
Cellular Volume

scholarly journals Exogenous Polyamines Only Indirectly Induce Stress Tolerance in Wheat Growing in Hydroponic Culture under Polyethylene Glycol-Induced Osmotic Stress

Life ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 151 ◽  
Author(s):  
Izabela Marcińska ◽  
Kinga Dziurka ◽  
Piotr Waligórski ◽  
Franciszek Janowiak ◽  
Edyta Skrzypek ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Osmotic Stress ◽  
Stress Tolerance ◽  
Hydroponic Culture ◽  
Low Molecular Weight ◽  
Induce Stress ◽  
Protective Mechanisms ◽  
Wheat Seedlings ◽  
Response To Stress

The aim of the present study was to evaluate the effect of osmotic stress caused by polyethylene glycol (PEG) 6000 in hydroponic culture on wheat seedlings of drought-resistant Chinese Spring (CS) and drought-susceptible SQ1 cultivar, and to examine the alleviative role of exogenous polyamines (PAs) applied to the medium. The assessment was based on physiological (chlorophyll a fluorescence kinetics, chlorophyll and water content) as well as biochemical (content of carbohydrates, phenols, proline, salicylic and abscisic acid, activity of low molecular weight antioxidants) parameters, measured after supplementation with PAs (putrescine, spermidine and spermine) on the 3rd, 5th and 7th day of the treatment. The results indicate that PAs ameliorate the effects of stress, indirectly and conditionally inducing stress tolerance of wheat seedlings. In contrast to the susceptible SQ1, the resistant CS cultivar activated its protective mechanisms, adjusting the degree of their activation to the level of the stress, depending on the genetic resources of the plant. Increased accumulation of antioxidants in the resistant CS in response to stress after the application of PAs confirms the hypothesis that PAs are involved in the signaling pathway determining the antioxidative response and the tolerance of wheat plants to drought stress.

The Role of the Actin Cytoskeleton in Equine Spermatozoal Response to Osmotic Stress.

2008 ◽  
Vol 78 (Suppl_1) ◽  
pp. 144-144
Author(s):  
Alysia Thomas ◽  
Liane Correa ◽  
Barry A Ball ◽  
Stuart Meyers
Keyword(s):  
Osmotic Stress ◽  
Actin Cytoskeleton

scholarly journals Nitric Oxide and the Neuroendocrine Control of the Osmotic Stress Response in Teleosts

2019 ◽  
Vol 20 (3) ◽  
pp. 489 ◽  
Author(s):  
Carla Cioni ◽  
Elisa Angiulli ◽  
Mattia Toni
Keyword(s):  
Nitric Oxide ◽  
Stress Response ◽  
Osmotic Stress ◽  
No Synthase ◽  
Hormone Release ◽  
Neurosecretory Neurons ◽  
Osmotic Stress Response ◽  
Osmotic Challenge ◽  
Osmotic Stimuli

The involvement of nitric oxide (NO) in the modulation of teleost osmoresponsive circuits is suggested by the facts that NO synthase enzymes are expressed in the neurosecretory systems and may be regulated by osmotic stimuli. The present paper is an overview on the research suggesting a role for NO in the central modulation of hormone release in the hypothalamo-neurohypophysial and the caudal neurosecretory systems of teleosts during the osmotic stress response. Active NOS enzymes are constitutively expressed by the magnocellular and parvocellular hypophysiotropic neurons and the caudal neurosecretory neurons of teleosts. Moreover, their expression may be regulated in response to the osmotic challenge. Available data suggests that the regulatory role of NO appeared early during vertebrate phylogeny and the neuroendocrine modulation by NO is conservative. Nonetheless, NO seems to have opposite effects in fish compared to mammals. Indeed, NO exerts excitatory effects on the electrical activity of the caudal neurosecretory neurons, influencing the amount of peptides released from the urophysis, while it inhibits hormone release from the magnocellular neurons in mammals.

scholarly journals Polyamine Transport and Role of potE in Response to Osmotic Stress in Escherichia coli

2000 ◽  
Vol 182 (21) ◽  
pp. 6247-6249 ◽  
Author(s):  
Dirk Schiller ◽  
Daniela Kruse ◽  
Helmut Kneifel ◽  
Reinhard Krämer ◽  
Andreas Burkovski
Keyword(s):  
Escherichia Coli ◽  
Osmotic Stress ◽  
Deletion Mutant ◽  
Transport Processes ◽  
Hyperosmotic Shock ◽  
Physiological Conditions ◽  
Polyamine Transport

ABSTRACT When transport of polyamines in Escherichia coli was examined, putrescine excretion was observed under two different physiological conditions: (i) strictly correlated to growth and (ii) following a hyperosmotic shock. Spermidine was not excreted. Characterization of a deletion mutant showed that PotE is not involved in these transport processes.

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