THE EFFECT OF THE INTERACTION BETWEEN WATER STRESS AND POTASSIUM NITRATE ON SOME OF THE PHYSIOLOGICAL RESPONSES OF NICOTIANA TABACUM L.

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NORASTEHNIA AKBAR; FARJADI MALIHEH

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Journal: NOVA BIOLOGICA REPERTA Year:2016 | Volume:2 | Issue:4 Page(s): 260-271

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Title

THE EFFECT OF THE INTERACTION BETWEEN WATER STRESS AND POTASSIUM NITRATE ON SOME OF THE PHYSIOLOGICAL RESPONSES OF NICOTIANA TABACUM L.

Author(s)

NORASTEHNIA AKBAR | FARJADI MALIHEH | Issue Writer Certificate

Keywords

NONENZYMATIC ANTIOXIDANTSQ2

POLYETHYLENE GLYCOLQ2

DROUGHT STRESSQ2

MALONDIALDEHYDEQ1

POTASSIUM NITRATEQ1

Abstract

In this study, water stress was applied by POLYETHYLENE GLYCOL at a concentration of 20 perecentage. To improve the resistance of the plants, the samples were treated by POTASSIUM NITRATE at concentrations 5, 10, and 15 mM within 9 days. Changes in proline, total protein, photosynthetic pigments, carotene, anthocyanin, MALONDIALDEHYDE, phenols, flavonols, flavonoids, soluble sugars and potassium ion were examined. The results showed that tobacco plants which had been exposed to drought used the accumulation of osmolytes such as proline, soluble sugars and potassium in order to balance their osmotic pressure. DROUGHT STRESS also caused oxidative stress and increased the production of active forms of oxygen. As a result, non-enzymatic antioxidant defense system of tobacco plants including anthocyanins, flavonoids, flavonols and beta-carotene increased, which could be considered to be a major step for resistance to drought. The results also showed that the concentration of 15 mM POTASSIUM NITRATE in particular, could significantly improve some of the harmful effects of stress and reduced photosynthetic pigments and proteins. POTASSIUM NITRATE could also bring down the MDA and beta-carotene levels to equivalent levels in control plants. As a result, it seems that using potassium can affect plant resistance to drought and plays an important role to reduce some harmful effects of stress.

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APA: Copy

NORASTEHNIA, AKBAR, & FARJADI, MALIHEH. (2016). THE EFFECT OF THE INTERACTION BETWEEN WATER STRESS AND POTASSIUM NITRATE ON SOME OF THE PHYSIOLOGICAL RESPONSES OF NICOTIANA TABACUM L.. NOVA BIOLOGICA REPERTA, 2(4), 260-271. SID. https://sid.ir/paper/250569/en

Vancouver: Copy

NORASTEHNIA AKBAR, FARJADI MALIHEH. THE EFFECT OF THE INTERACTION BETWEEN WATER STRESS AND POTASSIUM NITRATE ON SOME OF THE PHYSIOLOGICAL RESPONSES OF NICOTIANA TABACUM L.. NOVA BIOLOGICA REPERTA[Internet]. 2016;2(4):260-271. Available from: https://sid.ir/paper/250569/en

IEEE: Copy

AKBAR NORASTEHNIA, and MALIHEH FARJADI, “THE EFFECT OF THE INTERACTION BETWEEN WATER STRESS AND POTASSIUM NITRATE ON SOME OF THE PHYSIOLOGICAL RESPONSES OF NICOTIANA TABACUM L.,” NOVA BIOLOGICA REPERTA, vol. 2, no. 4, pp. 260–271, 2016, [Online]. Available: https://sid.ir/paper/250569/en

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