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Effect of NaCl, copper and cadmium ions on halophytes with different types of salt resistance: accumulation, physiological and biochemical reactions
Functional Plant Biology ( IF 2.6 ) Pub Date : 2021-07-23 , DOI: 10.1071/fp21083
Viktor Nesterov , Elena Bogdanova , Olga Makurina , Svetlana Rozina , Olga Rozentsvet

The capacities of the euhalophyte SaLi-Cornia perennans Willd. and glycohalophyte Artemisia santonica L. to accumulate NaCl, Cu, and Cd, as well as their physiological and biochemical responses to these compounds, was investigated. Seeds were germinated in distilled water for 1–3 days and then sown in containers with sand. Plants were watered with Robinson’s nutrient solution. After 3 months, plants were divided into two groups: experimental and control. In the experimental group, soil was treated with 1M NaCl, 10 mM Cu(NO3)2, and 10 mM Cd(NO3)2 for 24 h. The exposure to high concentration of NaCl in the experiment did not affect the baseline level of Na, which was twice as high in S. perennans as in A. santonica. Plant exposure to Cu and Cd caused their accumulation in the aboveground parts of both species. The accumulation capacity of the euhalophyte was many times higher than that of the glycohalophyte. We analysed functional parameters of leaves by measuring photosynthetic pigments, structural parameters of membranes by assessing the lipid profile, and the balance of pro/antioxidant processes. Using data on changes in several biochemical parameters, the sensitivity of the two different halophytes to metal ions was as follows: for S. perennans – Cu > Na > Cd; for A. santonica – Na > Cu > Cd. Our findings suggest that S. perennans can be used for heavy metal extraction from soil in phytoremediation, whereas A. santonica will be more effective for greening of polluted territories.



中文翻译:

NaCl、铜和镉离子对不同类型耐盐性盐生植物的影响:积累、生理生化反应

植物SaLi - Cornia perennans Willd 的能力。研究了糖盐植物 Artemisia santonica L. 积累 NaCl、Cu 和 Cd,以及它们对这些化合物的生理和生化反应。种子在蒸馏水中发芽 1-3 天,然后播种在装有沙子的容器中。用罗宾逊营养液浇灌植物。3个月后,植物被分成两组:实验组和对照组。在实验组中,土壤用1M NaCl、10 mM Cu(NO 3 ) 2和10 mM Cd(NO 3 ) 2 处理24 小时。实验中暴露于高浓度的 NaCl 不会影响 Na 的基线水平,在S. perennans 中的 Na 基线水平是在A. santonica 中的两倍。植物暴露于铜和镉导致它们在两个物种的地上部分积累。真盐植物的积累能力比糖盐植物高很多倍。我们通过测量光合色素、评估脂质分布的膜结构参数以及促/抗氧化过程的平衡来分析叶子的功能参数。使用几个生化参数变化的数据,两种不同的盐生植物对金属离子的敏感性如下:对于多年生草- Cu > Na > Cd;对于A. santonica– Na > Cu > Cd。我们的研究结果表明,多年生 S. perennans可用于植物修复中从土壤中提取重金属,而A. santonica将更有效地绿化污染地区。

更新日期:2021-07-27
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