Due to the widespread and frequent use of Roundup Ultra 360 SL in crops production, the active substance glyphosate is often present (in the soil or in post-harvest remnants) and may be toxic to plants, including the non-target species. The aim of the current study was to determine the sensitivity of young soybean seedlings to glyphosate in concentrations ranging from 0 to 10 μM. It was demonstrated that the seedlings take small quantities of soil glyphosate up. More of the active substance was found in the shoots than in the roots. From the doses applied, the plant absorbs up to 4% of soil glyphosate, while over 96% remains in the soil. This suggests that only 4% of glyphosate taken up from the soil affects plant seedling development and water management. It modifies the contents of the biogenic amines cadaverine and putrescine as well as the activity of enzymes involved in their biosynthesis, i.e. ornithine decarboxylase and lysine decarboxylase. The free radical content of the roots increased with increasing herbicide doses and time of exposure. The main enzyme involved in the rapid removal of free radicals was superoxide peroxidase, activated by the herbicide treatment, while catalase was not significantly stimulated.

中文翻译：

---

对超级360 SL大豆幼苗的吸收和反应。

由于Roundup Ultra 360 SL在农作物生产中的广泛和频繁使用，活性物质草甘膦经常存在（在土壤中或在收获后的残余物中），并且可能对植物（包括非目标物种）有毒。当前研究的目的是确定浓度为0至10μM的大豆幼苗对草甘膦的敏感性。结果表明，幼苗吸收了少量的草甘膦。在芽中发现的活性物质多于根。从施用的剂量来看，植物吸收了高达4％的土壤草甘膦，而超过96％的残留在土壤中。这表明从土壤中吸收的草甘膦只有4％影响植物幼苗的发育和水分管理。它可以改变生物胺类尸胺和腐胺的含量，以及参与其生物合成的酶的活性，如鸟氨酸脱羧酶和赖氨酸脱羧酶。根的自由基含量随除草剂剂量和接触时间的增加而增加。快速清除自由基中涉及的主要酶是过氧化物过氧化物酶，该酶通过除草剂处理而被激活，而过氧化氢酶则没有受到明显刺激。