Abstract

The effect of selenium nanocomposite encapsulated in a carrageenan matrix (NC Se/Car) on the Clavibacter michiganensis ssp. sepedonicus (Cms) bacteria (causing potato ring rot) and potato plants has been studied. The electron microscopy data indicate that NC Se/Car comprise spherical selenium nanoparticles (of a wide size range) forming aggregates. The nanocomposite has not been found to exhibit any bacteriostatic and antibiofilm activity against Cms. Our experiments on plants have shown a stimulating effect of NC Se/Car on the plant biometric indicators and a decreased harmful effect of Cms infection. The insignificant accumulation of selenium in the potato tissues treated with NC Se/Car (0.01–0.03% of air-dry weight) has been found. These results allow us to consider NC Se/Car as a plant development stimulator for agricultural crops.

中文翻译：

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角叉菜胶大分子中包裹的硒纳米复合物的生物活性与马铃薯植株的环腐发病机理有关

摘要

角叉菜胶基质（NC Se / Car）中包埋的硒纳米复合物对密歇根氏杆菌属细菌的影响。已经研究了sepedonicus（Cms）细菌（引起马铃薯环腐）和马铃薯植株。电子显微镜数据表明，NC Se / Car包含球形硒纳米颗粒（尺寸范围很广），形成聚集体。尚未发现该纳米复合材料对Cms具有任何抑菌和抗生物膜活性。我们在植物上的实验表明，NC Se / Car对植物生物指标具有刺激作用，而Cms的有害作用则有所降低感染。已经发现，用NC Se / Car处理过的马铃薯组织中硒的积累微不足道（风干重量的0.01-0.03％）。这些结果使我们可以将NC Se / Car视为农作物的植物生长刺激物。