天然高分子硒纳米复合材料对植物种子萌发的促生长作用

研究了以阿拉伯半乳聚糖（NC-Se/AG，6.4%Se）、淀粉（NC-Se/St，2%Se）和卡拉胶（NC-Se/Car，12%Se）为基质的三种硒纳米复合物（NCs）对萝卜、大豆和马铃薯的促生长活性。结果表明，NCs处理的植物种子在萌发过程中促进了根系的生长。结果表明，所研究的NCs对脂质过氧化水平和抗氧化酶谷胱甘肽过氧化物酶（GPX）活性均有影响。

在萝卜种子萌发过程中，硒纳米复合物能刺激萝卜根组织的萌发和生长，降低了根组织中双烯共轭物(DC)的含量结果表明，NC-Se/AG溶液浸种可使萝卜根组织中GPX活性提高40%。NC-Se/Car对大豆根系生长的促进作用也可能与GPX的激活有关。此外，在马铃薯植株中，这种NC导致了发芽的刺激；然而，这可能是由于其他抗氧化酶的激活。这些结果使我们可以考虑Se-NCs作为潜在的植物生长刺激剂。

The growth-stimulating activity of three selenium nanocomposites (NCs) in various matrices based on arabinogalactan (NC Se/AG, 6.4% Se), starch (NC Se/St, 2% Se), and carrageenan (NC Se/Car, 12% Se) with respect to plants of radish, soybean, and potato was investigated. It was shown that the treatment of plant seeds with NCs stimulated root growth during germination. It was found that the studied NCs affected both the level of lipid peroxidation and the activity of the antioxidant enzyme glutathione peroxidase (GPX). The treatment of radish seeds with NCs stimulated root growth during their germination and reduced the content of diene conjugates (DC) in root tissues. It was shown that soaking seeds in NC Se/AG solution increased the GPX activity in the tissues of the radish root by 40%. Stimulation of soybean root growth under the influence of NC Se/Car may also be associated with the activation of GPX. Furthermore, in potato plants, this NC led to the stimulation of germination; however, this was probably due to the activation of other antioxidant enzymes. The results obtained allow us to consider Se NCs as potential plant growth stimulants.

https://link.springer.com/article/10.1134%2FS1607672920060113

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