Effectiveness of potassium in mitigating the salt-induced oxidative stress in contrasting tomato genotypes

被引:10
|
作者
Amjad, Muhammad [1 ]
Akhtar, Javaid [2 ,3 ]
Anwar-Ul-Haq, Muhammad [2 ,3 ]
Riaz, Muhmmad Atif [2 ]
Saqib, Zulfiqar Ahmad [2 ,3 ]
Murtaza, Behzad [1 ]
Naeem, Muhammad Asif [1 ]
机构
[1] COMSATS Inst Informat Technol, Dept Environm Sci, Vehari 61100, Pakistan
[2] Univ Agr Faisalabad, Inst Soil & Environm Sci, Faisalabad, Pakistan
[3] Univ Agr Faisalabad, Saline Agr Res Ctr, Faisalabad, Pakistan
关键词
Antioxidants; MDA; Lycopersicon esculentum; salt stress; plant growth; LIPID-PEROXIDATION; SALINITY TOLERANCE; FOLIAR APPLICATION; CAKILE-MARITIMA; ANTIOXIDANT; GROWTH; PERFORMANCE; PHOSPHORUS; PHYSIOLOGY; TRANSPORT;
D O I
10.1080/01904167.2016.1201107
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
To check the efficacy of potassiumin alleviating oxidative stress under salt stress, salt-tolerant (Indent(-1)) and salt-sensitive (Red Ball) tomato (Lycopersicon esculentum Mill.) genotypes were exposed to three levels of sodium chloride (NaCl) (0, 75, 150 mM) and two levels of potassium (4.5 and 9 mM) in solution and foliar form. Thirty days of treatments revealed that increasing NaCl stress increased lipid peroxidation (malondialdehyde, MDA) and correspondingly the activity of antioxidant enzymes (superoxide dismutase, SOD; catalase, CAT; and glutathione reductase GR) in both genotypes. However, higher potassium (K) level in solution or foliar spray during the salt-induced stress decreased MDA and antioxidant activity and increased the growth in salt-tolerant genotype than in the salt-sensitive genotype. Decrease in MDA concentration, activity of antioxidant enzymes, and increase in the growth of tomato plants by the application of potassium under salt stress suggest that potassiumis an effective ameliorating agent against salt-induced oxidative damage.
引用
收藏
页码:1926 / 1935
页数:10
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