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Paper Information

Journal:   NOVA BIOLOGICA REPERTA   WINTER 2016 , Volume 2 , Number 4; Page(s) 260 To 271.
 
Paper: 

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

 
DOI: 

10.21859/acadpub.nbr.2.4.260

 
Author(s):  NORASTEHNIA AKBAR*, FARJADI MALIHEH
 
* DEPARTMENT OF BIOLOGY, FACULTY OF SCIENCES, UNIVERSITY OF GUILAN, RASHT, IRAN
 
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.

 
Keyword(s): NONENZYMATIC ANTIOXIDANTS, POLYETHYLENE GLYCOL, DROUGHT STRESS, MALONDIALDEHYDE, POTASSIUM NITRATE
 
 
References: 
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Click to Cite.
APA: Copy

NORASTEHNIA, A., & FARJADI, M. (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. https://www.sid.ir/en/journal/ViewPaper.aspx?id=509363



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. 2016 [cited 2021May10];2(4):260-271. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=509363



IEEE: Copy

NORASTEHNIA, A., FARJADI, M., 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, [online] 2(4), pp.260-271. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=509363.



 
 
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