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首页> 外文期刊>African Journal of Biotechnology >Antioxidant enzymes as bio-markers for copper tolerance in safflower (Carthamus tinctorius L.)
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Antioxidant enzymes as bio-markers for copper tolerance in safflower (Carthamus tinctorius L.)

机译：抗氧化剂作为红花铜耐性的生物标记（Carthamus tinctorius L.）

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摘要

Activities of antioxidants enzymes were investigated in order to evaluate protective mechanism of plants against oxidative stress induced by high concentration of copper. Safflower (Carthamus tinctorius?L.) plants were exposed to 100 μM copper (Cu) for two weeks under controlled environmental conditions using hydroponic culture. Cu induced changes in chlorophyll and carotenoids pigments. More Cu accumulated in the roots as compared with the leaves. Level of lipid peroxidation and antioxidative enzyme activities (peroxidase, catalase and superoxide dismutase) also correlated with the Cu content of the plant tissues. However, restricted transfer of the metal to the foliage and enhanced activity of peroxidase, catalase and superoxide dismutase may be of great significance for scavenging oxidative stress caused by excessive copper in safflower plants. Thus, these antioxidant enzymes served as good predictors for the evaluation of heavy metal tolerance.
机译：为了评估植物对抗高浓度铜诱导的氧化胁迫的保护机制，研究了抗氧化剂酶的活性。将红花植物（Carthamus tinctorius？L。）使用水培法在受控的环境条件下暴露于100μM铜（Cu）中两周。铜诱导叶绿素和类胡萝卜素色素的变化。与叶片相比，更多的铜在根部积累。脂质过氧化和抗氧化酶活性（过氧化物酶，过氧化氢酶和超氧化物歧化酶）的水平也与植物组织中的铜含量相关。然而，限制金属向叶面的转移以及提高过氧化物酶，过氧化氢酶和超氧化物歧化酶的活性对于清除红花植物中过量铜引起的氧化应激可能具有重要意义。因此，这些抗氧化酶可作为评估重金属耐受性的良好预测指标。

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