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首页> 外文期刊>Romanian journal of physics >TMA-OH COATED MAGNETIC NANOPARTICLES INTERNALIZED IN VEGETAL TISSUE
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TMA-OH COATED MAGNETIC NANOPARTICLES INTERNALIZED IN VEGETAL TISSUE

机译:植物组织中TMA-OH包覆的磁性纳米粒子

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摘要

The present experimental investigation was focused on the study of assimilatory pigments and nucleic acid levels in young plants intended for agricultural use (the popcorn) in presence of water-ferrofluid in culture medium. The water-ferrofluid was constituted by coating the small ferrophase particles with tetramethylammonium hydroxide and further dispersion in water. After germination, daily supply with 15 mL ferrofluid aqueous suspension per dish of sample was carried out for 12 days during plant growth. Small concentrations of aqueous ferrofluid solution added in culture medium had a stimulating effect on the growth of the plantlets, while the enhanced concentrations of aqueous ferrofluid solution induced an inhibitory effect. We have noticed that toxicity symptoms led to brown spots covering the leaf surface for the enhanced concentrations of aqueous ferrofluid solution added by us in the plants culture medium in this experiment. The iron excess treatment is believed to generate oxidative stress in leaf cells. In this case, photosynthesis might be greatly affected leading to decrease of the metabolic process rate.
机译:本实验研究的重点是研究在培养基中存在水铁磁流体的农业用幼植物(爆米花)中的同化色素和核酸水平。通过用氢氧化四甲铵涂覆小的铁相颗粒并进一步分散在水中来构成水铁磁流体。发芽后,在植物生长期间,每盘样品每天供应15mL的铁磁水悬浮液。在培养基中添加少量的铁磁流体水溶液对幼苗的生长具有刺激作用,而增加的铁磁流体水溶液的浓度则引起抑制作用。我们已经注意到,在本实验中,由于我们在植物培养基中添加的铁磁流体水溶液浓度增加,毒性症状导致叶子表面出现褐色斑点。据信铁过量处理在叶细胞中产生氧化应激。在这种情况下,光合作用可能受到很大影响,从而导致代谢过程速率降低。

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