Protective effect of inhibitors of succinate dehydrogenase on wheat seedlings during osmotic stress

2017 ◽  
Vol 53 (3) ◽  
pp. 353-358 ◽  
Author(s):  
Yu. E. Kolupaev ◽  
Yu. V. Karpets ◽  
T. O. Yastreb ◽  
E. N. Firsova
Keyword(s):  
Osmotic Stress ◽  
Protective Effect ◽  
Succinate Dehydrogenase ◽  
Wheat Seedlings ◽  
Effect Of Inhibitors

scholarly journals Hydrogen peroxide acts as a signal molecule in CO2 laser pretreatment-induced osmotic tolerance in wheat seedling

2011 ◽  
Vol 57 (No. 9) ◽  
pp. 403-408 ◽  
Author(s):  
Z.B. Qiu ◽  
Q. Li ◽  
Z.Z. Bi ◽  
M. Yue
Keyword(s):  
Hydrogen Peroxide ◽  
Osmotic Stress ◽  
Protective Effect ◽  
Stress Responses ◽  
Wheat Seedling ◽  
Physiological Effect ◽  
Signal Molecule ◽  
Wheat Seedlings ◽  
Water Tolerance ◽  
Promotive Effect

The objective of this study was to test whether hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) is involved in laser pretreatment-induced water tolerance in wheat seedlings due to its nature as a second messenger in stress responses. The results showed that 3 min laser pretreatment could enhance water tolerance in wheat seedlings by decreasing the concentration of malondialdehyde (MDA), the production rate of superoxide radical (O<sub>2</sub><sup>&ndash;</sup>), and increasing the activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX) and glutathione reductase (GR) and the concentration of glutathione (GSH), and having a positive physiological effect on the growth of osmotic stress seedlings. But the promotive effect of laser pretreatment-induced water tolerance in wheat seedling was effectively reversed by addition of 2 mmol AsA (ascorbic acid) or 5 &micro;mol DPI (diphenyle iodonium), but exogenous 100 U/mL CAT could not reversed laser pretreatment-induced protective effect on wheat seedlings under osmotic stress. The results suggest that H<sub>2</sub>O<sub>2</sub> metabolism was involved as signal in the processes of laser-induced water acclimation and laser-induced protective effect was shown to be likely related to NADPH oxidase-dependent H<sub>2</sub>O<sub>2</sub> production.

scholarly journals Optimal Nitrogen Supply Ameliorates the Performance of Wheat Seedlings under Osmotic Stress in Genotype-Specific Manner

Plants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 493 ◽  
Author(s):  
Tania Kartseva ◽  
Anelia Dobrikova ◽  
Konstantina Kocheva ◽  
Vladimir Alexandrov ◽  
Georgi Georgiev ◽  
...  
Keyword(s):  
Osmotic Stress ◽  
Stress Tolerance ◽  
Wheat Variety ◽  
Growth And Yield ◽  
Physiological Status ◽  
Wheat Seedlings ◽  
Modern Variety ◽  
N Supply ◽  
N Assimilation ◽  
N Deficiency

Strategies and coping mechanisms for stress tolerance under sub-optimal nutrition conditions could provide important guidelines for developing selection criteria in sustainable agriculture. Nitrogen (N) is one of the major nutrients limiting the growth and yield of crop plants, among which wheat is probably the most substantial to human diet worldwide. Physiological status and photosynthetic capacity of two contrasting wheat genotypes (old Slomer and modern semi-dwarf Enola) were evaluated at the seedling stage to assess how N supply affected osmotic stress tolerance and capacity of plants to survive drought periods. It was evident that higher N input in both varieties contributed to better performance under dehydration. The combination of lower N supply and water deprivation (osmotic stress induced by polyethylene glycol treatment) led to greater damage of the photosynthetic efficiency and a higher degree of oxidative stress than the individually applied stresses. The old wheat variety had better N assimilation efficiency, and it was also the one with better performance under N deficiency. However, when both N and water were deficient, the modern variety demonstrated better photosynthetic performance. It was concluded that different strategies for overcoming osmotic stress alone or in combination with low N could be attributed to differences in the genetic background. Better performance of the modern variety conceivably indicated that semi-dwarfing (Rht) alleles might have a beneficial effect in arid regions and N deficiency conditions.

scholarly journals Anthocyanins participate in protection of wheat seedlings from osmotic stress

2017 ◽  
Vol 45 (1) ◽  
pp. 47-56 ◽  
Author(s):  
O.Yu. Shoeva ◽  
E.I. Gordeeva ◽  
V.S. Arbuzova ◽  
E.K. Khlestkina
Keyword(s):  
Osmotic Stress ◽  
Wheat Seedlings

scholarly journals New α-Aminophosphonates as Corrosion Inhibitors for Oil and Gas Pipelines Protection

2019 ◽  
Vol 5 (4) ◽  
pp. 963-970 ◽  
Author(s):  
Evgeny Nikitin ◽  
Georgy Shumatbaev ◽  
Dmitriy Terenzhev ◽  
Kirill Sinyashin ◽  
Kamila Kazimova
Keyword(s):  
Protective Effect ◽  
Corrosion Inhibitors ◽  
Oil And Gas ◽  
Oil Industry ◽  
Gravimetric Analysis ◽  
Analysis Method ◽  
Radical Chain ◽  
Concentration Time ◽  
Oil And Gas Pipelines ◽  
Effect Of Inhibitors

The problem of corrosion of metal equipment is one of the most actual problems in oil industry. One of the methods to solve this problem is the development of new low-toxic, accessible and effective corrosion inhibitors. For this purpose, we carried out the synthesis of the new α-aminophosphonates based on syntanyl phosphites, formalin and diethanolamine according to the Kabachnik-Fields reaction. The resulting products are characterized by 1H, 31P, 13C NMR, IR and mass spectroscopy methods. The obtained compounds contain a long radical chain of industrial (poly)ethoxylated alcohol residue with different length of the hydroxyethyl fragment, as well as an active center containing O-P-C-N fragment, which impart them inhibitory properties toward corrosion processes. The anticorrosive activity of the new aminophosphonates was studied by gravimetric analysis method. In the article the effect of concentration, time and degree of ethoxylation of the hydrocarbon radical in alpha-aminophosphonates on the protective effect of inhibitors was studies. It was shown that the obtained aminophosphonates exhibit high values of the protective effect of steel in a highly mineralized medium containing 250 g/m3 СО2 and 200 g/m3 Н2S. The high value of the protective effect (82-85 %) at inhibitor concentration of 25 mg/l was found. The maximum protective effect at 50 mg/ml dosage of the inhibitor is 94.3 %, while there is a decrease of the corrosion rate (less than 0.04 mm/year).

ROS-Dependent Stress-Protective Effect of 24-Epicastasterone and Its Monosalicylate on Wheat Seedlings in Hyperthermia

2021 ◽  
Vol 57 (6) ◽  
pp. 770-777
Author(s):  
R. P. Litvinovskaya ◽  
M. A. Shkliarevskyi ◽  
Yu. E. Kolupaev ◽  
A. I. Kokorev ◽  
V. A. Khripach
Keyword(s):  
Protective Effect ◽  
Wheat Seedlings

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.

scholarly journals Response of growth and antioxidant enzymes to osmotic stress in two different wheat (Triticum aestivum L.) cultivars seedlings

2012 ◽  
Vol 58 (No. 12) ◽  
pp. 534-539 ◽  
Author(s):  
G.Q. Wu ◽  
L.N. Zhang ◽  
Y.Y. Wang
Keyword(s):  
Triticum Aestivum ◽  
Antioxidant Enzymes ◽  
Osmotic Stress ◽  
Wheat Cultivar ◽  
Triticum Aestivum L ◽  
Shoot Length ◽  
The Other ◽  
Wheat Cultivars ◽  
Wheat Seedlings ◽  
Drought Tolerant

&nbsp;To investigate the responses of growth and antioxidant enzymes to osmotic stress in two different wheat cultivars, one drought tolerant (Heshangtou, HST) and the other drought sensitive (Longchun 15, LC15), 15-day-old wheat seedlings were exposed to osmotic stress of &ndash;0.25, &ndash;0.50, and &ndash;0.75 MPa for 2 days. It is found that osmotic stress decreased shoot length in both wheat cultivars, whereas to a lesser degree in HST than in LC15. The contents of malondialdehyde (MDA) and the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) of shoot in both wheat cultivars were increased by osmotic stress. It is clear that MDA contents increased less in the more drought tolerant cultivar HST than in drought sensitive one LC15. On the contrary, POD and CAT activities increased more in HST than LC15 under osmotic stress. As the activity of SOD, however, no significant differences were found between HST and LC15. These results suggest that wheat cultivar HST has higher activities of antioxidant enzymes such as POD and CAT to cope with oxidative damage caused by osmotic stress compared to sensitive LC15. &nbsp;

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