Variability in enzymatic and non enzymatic antioxidants in wheat (Triticum aestivum L.) genotypes

Patil, Parmeshwar; Gupta, Anil Kumar; Bains, N. S.; Kaur, Kamaljit

doi:10.1007/s40502-021-00584-2

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…A reduction in H 2 O 2 and MDA content was also achieved by raising the amounts and activities of non-enzymatic antioxidants such as Phe (Tables 8, 9), Fla (Figures 4C,D) and enzymatic antioxidants such as POD (Table 3) and SOD (Tables 6, 10) due to the biofertilizer application. Increased DPPH under stress conditions has produced a positive property for eliminating O −2 radicals (Patil et al, 2021). As a confirmation of the results of the present study, another study on wheat has shown that PGPR application under drought stress conditions decreases membrane lipid peroxidation by reducing H 2 O 2 and MDA, maintaining cellular redox balance and, therefore, preventing electrolyte leakage in treated plants (Ahmad et al, 2019;Omara et al, 2022).…”

Section: Discussionsupporting

confidence: 89%

The effect of rhizobia in improving the protective mechanisms of wheat under drought and supplementary irrigation conditions

Vafa

Sohrabi

Mirzaghaderi

et al. 2022

Front. Sustain. Food Syst.

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IntroductionWheat (Triticum aestivum L.) is a strategic crop and one of the world's most essential cereals, providing most of the world's calories and protein needs. Drought stress is one of the main limitations for crop production such as wheat in arid and semi-arid regions. Plants can accumulate antioxidants, carbohydrates, and stress hormones that stimulate cell and molecular regeneration under stress conditions. Irrigation saves water, improves crop photosynthesis, and increases plant ability to absorb water and elements from soil. Therefore, irrigation at the right time or supplementary irrigation can help plant growth and crop yield under drought conditions. Appropriate nutrition with fertilizers increases plants' stress tolerance. Bio-fertilizers are restorative elements used in soil to improve tolerance to stresses such as drought stress. A well-known class of bio-fertilizers is plant growth promoting rhizobacteria (PGPR). These rhizosphere bacteria affect plant development and productivity by interacting with roots. Arbuscular mycorrhizal fungi (AMF) alleviate drought stress in plants by enhancing their ability to absorb water and nutrients from the soil. Seaweed extract bio-fertilizer is organic matter used to increase crop growth and soil fertility. This bio-fertilizer is utilized as growth stimulants and food supplements. Our research analyzed the effects of rhizobia and seaweed extracts on wheat's drought resistance mechanisms.Materials and methodsThis research was conducted in Iran in the crop years of 2017–2018 and 2018–2019 in the research farm of Kurdistan University Faculty of Agriculture located in Dehgolan with coordinates 47°18′ 55″ East and 35°19′ 10″ North with an altitude of 1866 meters above sea level, 45 kilometers east It was done on the wheat plant in Sanandaj city. The experiment was conducted in the form of a split-split plot in the form of a randomized complete block design with four replications. Irrigation treatments as the main factor (no irrigation or dry-land, one irrigation in the booting stage, two irrigations in the booting and spike stages), two wheat cultivars (Sardari and Sirvan) as secondary factors, and the application of biological fertilizers at eight levels including Mycorrhiza + Nitrozist and Phosphozist, Seaweed extract + Nitrozist and Phosphozist, Mycorrhiza + Seaweed extract, Mycorrhiza + Nitrozist and Phosphozist and no application of biological fertilizers (control) as Sub-sub-factors were considered.Results and discussionAccording to the study, when bio-fertilizer was applied with once and twice supplementary irrigation levels, leaf relative water content (RWC) and soluble protein content (SPC) increased, while lack of irrigation increased malondialdehyde (MDA). In both years, bio-fertilizers, especially their combinations, increased the amount and activity of enzymatic and non-enzymatic antioxidants, including peroxidase (POD), superoxide dismutase (SOD), phenol (Phe), flavonoid (Fla), and anthocyanin (Anth). Also, it enhanced the inhibition of free radicals by 2-2-Diphenyl picryl hydrazyl (DPPH) and cleared active oxygen species. It was found that malondialdehyde (MDA) levels were very low in wheat under two times irrigation with averages of 3.3909 and 3.3865 μmol g−1 FW. The results indicated a significant positive relationship between non-enzymatic and enzymatic antioxidants such as Phe, Fla, Anth, DPPH, POD, and SOD enzymes and their role in improving stress under dry-land conditions, especially in the Sardari variety. Biological fertilizers (Mycorrhiza + Nitrozist and Phosphozist + Seaweed extract) increased wheat yield compared to the control. Furthermore, Mycorrhiza + Nitrozist and Phosphozist + Seaweed extract improved grain yield by 8.04% and 6.96% in the 1st and 2nd years, respectively. Therefore, appropriate combinations of microorganisms, beneficial biological compounds, and supplementary irrigation can reduce the adverse effects of drought stress in arid and semi-arid regions.

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Section: Discussionsupporting

confidence: 89%

The effect of rhizobia in improving the protective mechanisms of wheat under drought and supplementary irrigation conditions

Vafa

Sohrabi

Mirzaghaderi

et al. 2022

Front. Sustain. Food Syst.

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“…Abiotic stresses cause high leakage of electrons towards oxygen during photosynthetic and respiratory processes leading to enhancement in reactive oxygen species (ROS) generation (Farooq et al, 2019). ROS are ubiquitous molecules produced as a consequence of normal cellular metabolism (Patil et al, 2021). In plants exposed to heat stress, destructive ROS are often formed, including singlet oxygen ( 1 O2), superoxide radical (O2 -), hydrogen peroxide (H2O2), and hydroxyl radical (OH -), which are responsible for the occurrence of oxidative stress (Blum et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Activity and isoenzyme content of ascorbate peroxidase in wheat genotypes (Triticum aestivum L.) under heat stress conditions

2022

IMBB

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Wheat is a major cereal crop and considered a source of basic calories and protein for more than 80% of the world population. Heat is the major abiotic stress limiting wheat production. Antioxidant enzymes play a key role in the elimination of reactive oxygen species at elevated temperatures and play an important role in the tolerance of wheat to heat stress. İn this purpose the impact of rising temperature on wheat production is gaining concern worldwide. The activity and isoenzyme content of ascorbate peroxidase (APX), in the leaves of four bread wheat genotypes (tolerant genotypes Zirva 85 and Murov 2, stress-sensitive genotypes Gyzyl bugda and Aran), have been studied under conditions of short-term heat stress. Elevated temperatures lead to visible changes in enzyme activity. Heat stress caused a significant increase in APX activity in tolerant genotype Zirva 85. Polyacrylamide gel electrophoresis (PAGE) showed 7 isoforms of APX. Short-term heat stress caused an increase in the intensity of isoform staining in tolerant genotypes Zirva 85 and Murov 2.

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Unraveling the ability of wheat to endure drought stress by analyzing physio-biochemical, stomatal and root architectural traits

Lakde,

Khobra,

Sahi

et al. 2024

Plant Physiol. Rep.

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Variability in enzymatic and non enzymatic antioxidants in wheat (Triticum aestivum L.) genotypes

Cited by 4 publications

References 23 publications

The effect of rhizobia in improving the protective mechanisms of wheat under drought and supplementary irrigation conditions

The effect of rhizobia in improving the protective mechanisms of wheat under drought and supplementary irrigation conditions

Activity and isoenzyme content of ascorbate peroxidase in wheat genotypes (Triticum aestivum L.) under heat stress conditions

Unraveling the ability of wheat to endure drought stress by analyzing physio-biochemical, stomatal and root architectural traits

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