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首页> 外文期刊>Fresenius Environmental Bulletin >EFFECTS OF ZN AND K NUTRITIONAL STATUS ON PROTEIN CONTENT, LIPID PEROXIDATION AND ANTIOXIDATIVE ENZYME ACTIVITIES UNDER THE SALINITY STRESS IN DIFFERENT WHEAT GENOTYPES
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EFFECTS OF ZN AND K NUTRITIONAL STATUS ON PROTEIN CONTENT, LIPID PEROXIDATION AND ANTIOXIDATIVE ENZYME ACTIVITIES UNDER THE SALINITY STRESS IN DIFFERENT WHEAT GENOTYPES

机译：盐分胁迫下不同基因型小麦中ZN和K营养状况对蛋白质含量，脂质过氧化和抗氧化酶活性的影响

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A solution culture experiment was conducted with different zinc (Zn) (2×10~(-8) M and 10~(-6) M) and potassium (K) (100 μM and 2 mM) level using two bread wheat (Triticum aestivum L.), Dagdas and ES-14 and two durum wheat (Triticum durum L.), Kunduru-1149 and Selcuklu-97 genotypes. After 7 days, nutrient solution was salinized by two NaCl levels (0 and 150 mM NaCl) and the effect of Zn and K supplements on protein content, lipid peroxidation (LPX) level, ascorbate peroxidase (APX) and catalase (CAT) activities were evaluated on the 8th day after salinization. Salinity stress led to significant increases in LPX and decreases in protein content. Salinity-induced levels of LPX were significantly reduced by Zn and K supplements and especially by Zn-K supplement in combine. This effect was more significant in durum wheat genotypes. Zinc and K supplements either alone or together elevated the protein content of plants; however this effect was more significant under Zn supplements and in durum wheat genotypes. It was found that, salinity stress significantly enhanced the activities of APX and CAT. Under salinity stress, Zn deficiency significantly stimulated activities of APX and CAT however, such an effect was not found with K. Results showed that detrimental effects of salinity stress in plants could be mitigated with K and Zn supplements by limiting the lipid peroxidation and protein degradation.
机译：使用两个面包小麦（Triticum）对不同水平的锌（Zn）（2×10〜（-8）M和10〜（-6）M）和钾（K）（100μM和2 mM）水平进行溶液培养实验aestivum L。），Dagdas和ES-14以及两个硬粒小麦（Triticum durum L。），Kunduru-1149和Selcuklu-97基因型。 7天后，营养液通过两个NaCl水平（0和150 mM NaCl）盐化，并且锌和钾补充物对蛋白质含量，脂质过氧化（LPX）水平，抗坏血酸过氧化物酶（APX）和过氧化氢酶（CAT）活性的影响在盐渍化后第8天进行评估。盐分胁迫导致LPX显着增加，蛋白质含量降低。锌和钾的补充，特别是联合使用锌-钾的补充，盐度诱导的LPX水平显着降低。在硬粒小麦基因型中这种作用更为显着。锌和钾补充剂单独或共同提高了植物的蛋白质含量；然而，在锌补充剂和硬粒小麦基因型中，这种作用更为明显。发现盐度胁迫显着增强了APX和CAT的活性。在盐胁迫下，锌缺乏显着刺激了APX和CAT的活性，但钾却没有发现这种作用。结果表明，钾和锌补充剂可以通过限制脂质过氧化和蛋白质降解来减轻植物中盐胁迫的有害影响。 。

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