The effect of drought stress and Ultraviolet on antioxidant defensive system of enzyme and non-enzyme in three varieties of wheat (Triticum aestivum L. )

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Rezayi Far Zeynab; Fallahi Siamak; GHOLINEZHAD ESMAEIL

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Journal: JOURNAL OF PLANT PROCESS AND FUNCTION Year:2018 | Volume:7 | Issue:24 Page(s): 155-171

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Title

The effect of drought stress and Ultraviolet on antioxidant defensive system of enzyme and non-enzyme in three varieties of wheat (Triticum aestivum L. )

Author(s)

Rezayi Far Zeynab | Fallahi Siamak | GHOLINEZHAD ESMAEIL | Issue Writer Certificate

Keywords

AnthocyaninQ2

Drought stressQ1

FlavonoidsQ2

UV radiationQ2

WheatQ2

Abstract

Drought stress and ultraviolet radiation as stressful environmental factors have deleterious effects on physiological and growth of plants. So in order to evaluate the effect of Drought stress and Ultraviolet on photosynthesis pigments and antioxidant defensive system of enzyme and non-enzyme in three varieties of Wheat (Triticum aestivum L. ), a pot experiment was conducted by using factorial based on completely randomized design (RCD) with three replications in 2015. Treatments were Drought stress in two levels (control and Drought stress by applying 25% of field capacity) and ultraviolet radiation (control and UV-C) and three Wheat varieties ("Zare", "Pishgham" and "Mihan"). In this study, morphological traits, photosynthetic pigments and enzymes affecting on defense system were studied. The results showed that under Drought stress and UV rays, the content of Flavonoids increased in " Mihan" and decreased significantly in "Pishgham" cultivar, while in the same conditions (Drought stress and UV radiation), the content of Anthocyanins increased significantly. Treatment Drought stress and UV caused oxidative stress in different varieties of Wheat. In addition Drought stress increased phenolic compounds and cause to enhance antioxidant enzymes such as catalase activity, superoxide dismutase and peroxidase. The content of soluble sugars increased under drought stess conditions. In Drought stress condition, application UV increased proline amount in all three varieties about 31 percent but in optimum irrigation increased up to 22 percent. Increase of activity of antioxidant enzymes was observed in all three varieties, as well as the content of malondialdehyde and proline increased in all three varieties. UV radiation caused a significant reduction in the concentration of chlorophyll a, b and total chlorophyll. Also Drought stress and UV reduced significantly root and stem dry weight, root and stem length. The interaction between Drought stress and ultraviolet radiation increased damage to the plant. Also "Zare" variety according to increasing Flavonoids and Anthocyanin comparison with "Pishgham" and "Mihan" varieties was provn as tolerant to Drought stress.

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APA: Copy

Rezayi Far, Zeynab, Fallahi, Siamak, & GHOLINEZHAD, ESMAEIL. (2018). The effect of drought stress and Ultraviolet on antioxidant defensive system of enzyme and non-enzyme in three varieties of wheat (Triticum aestivum L. ). JOURNAL OF PLANT PROCESS AND FUNCTION, 7(24 ), 155-171. SID. https://sid.ir/paper/368696/en

Vancouver: Copy

Rezayi Far Zeynab, Fallahi Siamak, GHOLINEZHAD ESMAEIL. The effect of drought stress and Ultraviolet on antioxidant defensive system of enzyme and non-enzyme in three varieties of wheat (Triticum aestivum L. ). JOURNAL OF PLANT PROCESS AND FUNCTION[Internet]. 2018;7(24 ):155-171. Available from: https://sid.ir/paper/368696/en

IEEE: Copy

Zeynab Rezayi Far, Siamak Fallahi, and ESMAEIL GHOLINEZHAD, “The effect of drought stress and Ultraviolet on antioxidant defensive system of enzyme and non-enzyme in three varieties of wheat (Triticum aestivum L. ),” JOURNAL OF PLANT PROCESS AND FUNCTION, vol. 7, no. 24 , pp. 155–171, 2018, [Online]. Available: https://sid.ir/paper/368696/en

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