• In future, environmental stresses may increase with climate change. (researchsquare.com)
  • Hence now feeding the worlds growing population with shrinking cultivable land area along with environmental stresses has given vital importance in research (Etesami and Bettie 2017). (researchsquare.com)
  • Various environmental stresses lead to excessive production of ROS causing progressive oxidative damage and ultimately cell death. (rehabsociety.org.hk)
  • Our results reveal that CAT1 is an important player in the removal of H2O2 generated under various environmental stresses. (jipb.net)
  • Micronutrient fertilizers affect the digestibility, intermediary metabolism, and oxidative stress in Myzus persicae (Sulzer). (ac.ir)
  • Reactive oxygen species (ROS) are produced during normal cell metabolism but their production is drastically enhanced when plants are exposed to stresses such as high light, low temperatures or drought. (openaire.eu)
  • Severe water stress stops photosynthesis, disrupts metabolism, and kills plants. (stationzilla.com)
  • Thus, NADKc represents the missing link between Ca2+ signaling, metabolism, and the oxidative burst. (rehabsociety.org.hk)
  • Previous soil and plant researchers suggests that use of beneficial soil microorganisms and silicon (Si) in agriculture is a sustainable strategy for alleviation of various biotic and abiotic stresses in plants (Rizwan et al. (researchsquare.com)
  • In water solutions, this substance is present as a monovalent anion, ascorbate- (Asc-), which easily donates electrons to oxidized molecules and scavenges reactive oxygen species (ROS). (deepdyve.com)
  • [9] Research into how vitamin E prevents the process of lipid peroxidation led to the identification of antioxidants as reducing agents that prevent oxidative reactions, often by scavenging reactive oxygen species before they can damage cells. (wikipedia.org)
  • Exposure to toxic metals can intensify the production of reactive oxygen species (ROS), which are continuously produced in both unstressed and stressed plants cells. (typeset.io)
  • Introduction Attempted infection of plants by a nonpathogen or an avir- ulent strain of a pathogen elicits rapid collapse of the chal- The oxidative burst, the generation of reactive oxygen species (ROS) in response to microbial pathogen attack, is a ubiquitous early part of the resistance mechanisms of plant cells. (rehabsociety.org.hk)
  • Clinically, in a disease ameliorated by ascorbate, there is a suppression of symptoms only with very high doses and approximately to that extent which a nonrate-limited,_antioxidant_free_radical_scavenger, might be expected to affect that disease process if all harmful free radicals and highly reactive oxidizing substances were quenched. (mall-net.com)
  • The heavy metal stresses lead to reactive oxygen species (ROS) production, and high concentration of ROS is harmful to plants. (springeropen.com)
  • The cycle involves the antioxidant metabolites: ascorbate, glutathione and NADPH and the enzymes linking these metabolites. (wikipedia.org)
  • Nevertheless, other enzymes (peroxidases) including peroxiredoxins and glutathione peroxidases, which use thioredoxins or glutaredoxins as reducing substrates, also contribute to H2O2 removal in plants. (wikipedia.org)
  • Effects of biofertilizer and nano Zn-Fe oxide on physiological traits, antioxidant enzymes activity and yield of wheat (Triticum aestivum L.) under salinity stress. (ac.ir)
  • Mn deficiency induced the oxidative stress for increase the H 2 O 2 and MDA content in leaves of plants and reduce the activity of antioxidant enzymes and total phenols causing damage to quantum efficiency of photosystem II and pigment content. (biomedcentral.com)
  • These data show that apoplastic redox-active transition metals are involved in the ascorbate-induced [Ca2+]cyt. (deepdyve.com)
  • This mechanism may underlie ascorbate release, signalling phenomena, apoplastic redox reactions, iron acquisition, and control the ionic and electrical equilibrium (together with K+ efflux via GORK channels). (deepdyve.com)
  • 18 The oxidative burst mounted during early plant infection disrupts the cellular redox homeostasis 19 of fungal phytopathogens. (rehabsociety.org.hk)
  • For instance, the redox probe DCFH continues to be utilized to imply intracellular Mito-SOX and H2O2 to point mitochondria-derived O2B? (vittori-lab.com)
  • Furthermore, artifactual development of H2O2 happens from redox bicycling from the DCF radical (33, 34). (vittori-lab.com)
  • but if the ascorbate/dehydroascorbate (AA/DHA) ratio is kept high (the redox potential kept reducing) until the unstable dehydro- ascorbate undergoes hydrolysis or can be reduced back to ascorbate, the dehydroascorbate will do no harm. (mall-net.com)
  • an oxidative burst triggered by the treatment of Arabidopsis plants with a cell wall elicitor prepared from the fungus Fusarium oxysporum could be abolished by knocking down the transcript levels of PRX33 and PRX34 through the transgenic expression of a French bean class III peroxidase cDNA (FBP1) in an antisense orientation (Daudi et al. (rehabsociety.org.hk)
  • Here, we analyze the expression profiles and activities of three catalases under different treatments including drought, cold, oxidative stresses, abscisic acid and salicylic acid in Arabidopsis. (jipb.net)
  • The CONSTANS-like 4 transcription factor, AtCOL4, positively regulates abiotic stress tolerance through an abscisic acid-dependent manner in Arabidopsis [J]. J Integr Plant Biol. (jipb.net)
  • EPR spectroscopy measurements demonstrate that salinity (NaCl) triggers the accumulation of root apoplastic ascorbyl radicals in an A9C-dependent manner, confirming that l-ascorbate leaks through anion channels under depolarization. (deepdyve.com)
  • Cotton plants were grown with different concentrations of MgSO4 in hydroponic medium to create nutrient deficiency (0, 75, 150, 1000 μM Mg). Gradual decreases in growth and photosynthetic rates were observed with declining Mg concentrations and 0, 75, and 150 μM Mg increased oxidative stress as evidenced by H2O2 and lipid peroxidation. (tubitak.gov.tr)
  • Exogenous copper and iron stimulate the ascorbate-induced [Ca2+]cyt. (deepdyve.com)
  • Exogenous ascorbate also induces a moderate increase in programmed cell death symptoms in intact roots, but it does not activate Ca2+ influx currents in patch-clamped root protoplasts. (deepdyve.com)
  • This study investigated the efficiency of sodium nitroprusside (SNP) foliar spraying on basil (Ocimum basilucum) growth and oxidative stress alleviation under drought conditions. (journalcra.com)
  • In addition, an excess of oxidative free radicals also increases the expression of proinflammatory genes and activates the inflammation process [ 18 , 19 ]. (hindawi.com)
  • A novel cDNA encoding glutathione peroxidase of tea plant (Camellia sinensis) was isolated by rapid amplification of cDNA ends (RACE) method and designated as CsGPX2 (GenBank Accession No. JQ247186). (springeropen.com)
  • Despite the fact that ROS have been considered to be damaging molecules, it is recognized that they, especially H2O2, play a major role in cellular signaling pathways and regulation of gene expression in a wide range of organisms including plants. (openaire.eu)
  • 2016) also suggested that H2O2 molecules play dual roles in plant physiological and developmental processes. (researchgate.net)
  • Antioxidants are molecules that reduce ROS and keep the oxidative damage at a minimum. (hindawi.com)
  • Intriguingly, the replacement of gluconate with ascorbate in the patch-clamp pipette reveals a large ascorbate efflux current, which shows sensitivity to the anion channel blocker, anthracene-9-carboxylic acid (A9C), indicative of the ascorbate release via anion channels. (deepdyve.com)
  • [7] [8] The possible mechanisms of action of antioxidants were first explored when it was recognized that a substance with anti-oxidative activity is likely to be one that is itself readily oxidized. (wikipedia.org)
  • The results suggest that Se is an antioxidant or it activates protective mechanisms, which can alleviate oxidative stress in the chloroplasts, and improve the recovery of chlorophyll content following light stress. (typeset.io)
  • However, it has recently been shown that Se increases the antioxidative capacity and stress tolerance of lettuce (Lactuca sativa L.) and ryegrass (Lolium perenne L.). This research was undertaken to investigate the antioxidative properties of Se during photooxidative stress in potato (Solanum tuberosum L.) and to determine the defence mechanisms. (typeset.io)
  • Production of many crops, including onion, under salinity is lagging due to limited information on the physiological, biochemical and molecular mechanisms of salt stress tolerance in plants. (icar.gov.in)
  • Silicon (Si) is a multiple stress attenuator element in plants, however more research is needed to elucidate the actions in the plants defense system with low nutrition of manganese (Mn) for a prolonged period, and the attenuation mechanisms involved in the effects of Mn deficiency on energy cane with high fiber content. (biomedcentral.com)
  • Proposed molecular mechanisms of oxidative stress-induced Nrf2 activation. (hindawi.com)
  • Under oxidative-stressed conditions, cysteine residues of Keap1 are oxidized, forming a disulfide bridge. (hindawi.com)
  • Since glutathione, ascorbate and NADPH are present in high concentrations in plant cells it is assumed that the glutathione-ascorbate cycle plays a key role for H2O2 detoxification. (wikipedia.org)
  • In plants, the glutathione-ascorbate cycle operates in the cytosol, mitochondria, plastids and peroxisomes. (wikipedia.org)
  • Under all drought levels, the most pronounced improvement achieved for SOD activity (3 folds) by applying 250 µM SNP, for APX activity (24 folds) at150 µM SNP and for GR activity (2 folds) at 100 µM higher than untreated stressed plants. (journalcra.com)
  • Here we described the role of Si and its transporters in mitigating abiotic stress condition in horticultural plants. (researchsquare.com)
  • The oxidative stress in Ni-grown plants was higher than Zn-grown plants. (edu.au)
  • Application of 200 μL L -1 ethephon to Ni- or Zn-grown plants significantly alleviated toxicity and reduced the oxidative stress to a greater extent together with the improved net photosynthesis due to induced activity of ascorbate peroxidase and glutathione (GSH) reductase, resulting in increased production of reduced GSH. (edu.au)
  • This review is to assess the mode of action and role of antioxidants in protecting plants from stress caused by the presence of heavy metals in the environment. (typeset.io)
  • The aim of this review is to assess the mode of action and role of antioxidants in protecting plants from stress caused by the presence of heavy metals in the environment. (typeset.io)
  • Plants are especially exposed to oxidative stress caused by photosynthetic processes. (openaire.eu)
  • Water Stress - How Does Plants Respond To Water Stress? (stationzilla.com)
  • A better understanding of the morphoanatomical and physiological basis of water stress resistance in plants could be used to select or create new crop varieties with better underwater productivity. (stationzilla.com)
  • What Are The Impact Of Water Stress On Plants? (stationzilla.com)
  • It has been proved that ROS has two entirely different roles in plants, signal function and oxidative damage. (springeropen.com)
  • Under biotic or abiotic stress, ROS may dramatically accumulate in plants and generate oxidative damage (Faltin et al. (springeropen.com)
  • However, monodehydroascorbate is a radical and if not rapidly reduced it disproportionates into ascorbate and dehydroascorbate (DHA). (wikipedia.org)
  • Dehydroascorbate is reduced to ascorbate by dehydroascorbate reductase (DHAR) at the expense of GSH, yielding oxidized glutathione (GSSG). (wikipedia.org)
  • The complex nature of growth regulation under stress has been highlighted in studies of plant responses to soil water deficit at developmental, physiological, and molecular levels. (stationzilla.com)
  • SNP application alleviate drought stress by reducing H2O2 and MDA content. (journalcra.com)
  • Water stress reduces leaf water potential and stomatal opening, reducing photosynthesis-related genes and CO2 availability. (stationzilla.com)
  • When water levels are low due to water stress, photosynthesis can slow or stop, causing internal food supplies to diminish or disappear. (stationzilla.com)
  • The oxidized ascorbate (monodehydroascorbate, MDA) is regenerated by monodehydroascorbate reductase (MDAR). (wikipedia.org)
  • Na+ but not Cl- or osmotic stress is involved in NaCl-induced expression of Glutathione reductase in roots of rice seedlings , 2009, J Plant Physiol. (github.io)
  • Identification and characterization of a novel chloroplast/mitochondria co-localized glutathione reductase 3 involved in salt stress response in rice , 2013, Plant Mol Biol. (github.io)
  • Gene knockout of glutathione reductase 3 results in increased sensitivity to salt stress in rice. (github.io)
  • Therefore, foliar usage of SNP at 100, 150 and 250 µM might be suggested as an efficient way for enhancing basil tolerance to drought stress. (journalcra.com)
  • Low or moderate doses (doses substantially below bowel tolerance) usually had no noticeable immediate beneficial effects, but high doses (doses just below the amount that would produce diarrhea in a patient tolerant to ascorbate) would have the effect of markedly suppressing symptoms as the high dose levels were reached. (mall-net.com)
  • Mixtures of mineral ascorbates (calcium, magnesium, potassium, zinc, and sometimes sodium) are used in certain circumstances to increase bowel tolerance for even more clinical effectiveness but do not clearly demonstrate the increasing bowel tolerance phenomenon being discussed here. (mall-net.com)
  • To understand the mechanism of tolerance to deferent stresses in tea plant, a new glutathione peroxidase gene of tea plant was cloned and its expression pattern was analyzed under abiotic and biotic stresses. (springeropen.com)
  • Oxidative stress during selenium (Se) deficiency in the seedlings ofTrigonella foenum-graecum grown for 72 h was investigated and the response to supplemented levels of Se (0.5-1 ppm) and mimosine (0.05-1 mM) was evaluated. (typeset.io)
  • When compared to the stressed seedlings, mitochondrial oxygen uptake from seedlings of Se (0.75 ppm) group and mimosine (0.2 mM) group exhibited threefold enhancement in state 3 respiration rate and a controlled state 4 rate, with respiratory control ratios of 5-8. (typeset.io)
  • An early study by Narimanov (2000) reported enhanced germination, emergence and development of seedlings using a short seed soaking treatment with H2O2 in a wide variety of crops including corn (Zea mays L.), beans (Phaseolus sp. (researchgate.net)
  • Peroxidase activity registered a significant increase by threefold in mitochondria and fourfold in soluble fraction in both Se and mimosine groups. (typeset.io)
  • Some of the ROS species are highly toxic and must be detoxified by cellular stress responses, if the plant is to survive and grow. (typeset.io)
  • Many of these types are short-lived, respond quickly with low-molecular pounds mobile reductants (ascorbate and GSH), and will trigger oxidation of important cellular elements (lipid, proteins, and DNA). (vittori-lab.com)
  • The results demonstrate that basil growth significantly decreased under drought stress, while SNP spraying, with all studied concentrations, significantly enhanced plant growth under drought conditions. (journalcra.com)
  • Nitric oxide alleviates aluminum-induced oxidative damage through regulating the ascorbate-glutathione cycle in roots of wheat [J]. J Integr Plant Biol. (jipb.net)
  • Water stress has many similar features with salinity stress, but it is considered as more destructive to agricultural as compared to salt stress (Bodner et al. (researchsquare.com)
  • Horticultural crop production is frequently subjected to the naturally occurring different biotic and abiotic stresses that can substantially reduce the absorption and translation of essential elements and ultimately decrease the crop yield. (researchsquare.com)
  • It puts in place a sequence of events that ultimately protect the cell from oxidative injury. (hindawi.com)
  • Drought or root impairment causes water stress, which affects many invisible processes. (stationzilla.com)
  • The wide spectrum of infectious diseases ameliorated by massive doses of ascorbate indicates some common pathologic processes in these diseases. (mall-net.com)
  • Moreover, this study has elucidated that SA‐induced stomatal closure involves extracellular oxidative burst (Figs 2 & 3) and that the extracellular oxidative burst is mediated with SHAM‐sensitive peroxidases but not NAD(P)H oxidases (Figs 1d & 2). (rehabsociety.org.hk)
  • Out of three SNP concentration tested, 150 μM proved to be the optimal treatment for ameliorating drought stress. (journalcra.com)
  • As indicators of drought stress, H2O2 and MDA content increased. (journalcra.com)
  • A new protein hydrolysate-based biostimulant applied by fertigation promotes relief from drought stress in Capsicum annuum L. (scialert.net)
  • The water-deficit stress, also known as the drought stress, is the more typical type of water stress. (stationzilla.com)
  • In addition, CAT2 is activated by cold and drought stresses and CAT3 is mainly enhanced by abscisic acid and oxidative treatments as well as at the senescence stage. (jipb.net)
  • In the first step of this pathway, H2O2 is reduced to water by ascorbate peroxidase (APX) using ascorbate (ASC) as the electron donor. (wikipedia.org)
  • ROS no son solo productos toxicos del metabolismo aerobico, sino ademas, moleculas senales involucradas en varios procesos de desarrollo en … 54, 2003, The lignin biosynthetic pathway has been studied for more than a century but has undergone major revisions over the past decade. (rehabsociety.org.hk)
  • This review focuses on the effects of oxidative stress and the role of a particular antioxidant system-the Keap1-Nrf2-ARE pathway-on ocular diseases, specifically age-related macular degeneration, cataracts, diabetic retinopathy, and glaucoma. (hindawi.com)
  • The CsGPX2 gene showed strong responses to most abiotic stresses including salinity, heavy metal toxicity, drought, heat, plant hormones, but could not be induced by biotic treatment. (springeropen.com)
  • Glycine betaine functionalized graphene oxide as a new engineering nanoparticle lessens salt stress impacts in sweet basil (Ocimum basilicum L. (scialert.net)
  • Under metal stress, ethylene protected photosynthetic potential by efficient PS II activity and through increased activity of ribulose-1,5-bisphosphate carboxylase and photosynthetic nitrogen use efficiency (P-NUE). (edu.au)
  • The involvement of ethylene in reversal of photosynthetic inhibition by Ni and Zn stress was related to the changes in PS II activity, P-NUE, and antioxidant capacity was confirmed using ethylene action inhibitor, norbornadiene. (edu.au)
  • The oxidative burst or the rapid production of ROS with a subsequent cascade of plant responses to biotic and abiotic stress (Hippeli et al. (rehabsociety.org.hk)
  • Abscisic acid (ABA) is a representative signaling hormone involved in regulating plant stress responses. (mdpi.com)
  • In biological systems 'oxidative stress' results from the presence of elevated levels of CRISPR/Cas-mediated crop trait improvement mainly focuses on yield, quality, and biotic and abiotic resistance. (rehabsociety.org.hk)
  • Citations: Effect of Salt Stress on α-amylase Activity, Sugars Mobilization and Osmotic Potential of Phaseolus vulgaris L. Seeds Var. (scialert.net)
  • Various stresses instigated by complex environmental conditions have affected the production and cultivation of crops (Meena et al. (researchsquare.com)
  • Societal Impact Statement: Given the rapidly increasing drought and temperature stresses associated with climate change, innovative approaches for food security are imperative. (weizmann.ac.il)
  • Inflammation often exacerbates the oxidative stress, creating a self-perpetuating, vicious cycle of oxidation and inflammation [ 20 , 21 ]. (hindawi.com)
  • The results of the present study reveal (1) the Prevalence of oxidative stress inT. foenum-graecum during Se deficiency, (2) enhanced mitochondrial functional efficiency mediated by Se and mimosine independently, and (3) an antitoxidative role for mimosine during Se deficiency. (typeset.io)