Graphene oxide (GO) is widely used in various scientific fields, including biochemistry and environmental and plant science, because of its unique physicochemical properties. However, there is limited knowledge about the influence of GO on the growth and cadmium (Cd) tolerance of plants used for environmental remediation. The regulation of GO nanosheets on Cd tolerance in jute (Corchorus olitorius L.) and the toxicity responses of the plant were investigated. Jute seedlings were cultivated in a Cd-contaminated aquatic system in the presence of GO at different concentrations (5, 10, and 20 mg/L). Several parameters, including dry biomass, chlorophyll contents, reactive oxygen species level, and antioxidant enzyme activities, were evaluated in this work. The results suggest that the effects of GO exposure on plant Cd tolerance are concentration dependent; at low concentrations, GO could promote the growth of jute and stimulate the activities of antioxidant enzymes and reduce oxidative stress to facilitate Cd uptake in jute seedlings and improve Cd tolerance. However, GO at high concentrations could inhibit plant growth, decrease Cd uptake, and increase oxidative stress. This study develops a possible application of GO nanosheets for Cd remediation at low concentrations; however, it is still in the early phases of exploration. Furthermore, the potential risks of releasing high concentrations of GO require further research.

中文翻译：

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用氧化石墨烯纳米片调节黄麻 (Corchorus olitorius L.) 的 Cd 耐受性和毒性反应

氧化石墨烯 (GO) 因其独特的物理化学性质而被广泛应用于各种科学领域，包括生物化学、环境和植物科学。然而，关于 GO 对用于环境修复的植物的生长和镉 (Cd) 耐受性的影响的知识有限。GO纳米片对黄麻（Corchorus olitorius） Cd耐受性的调控L.) 和植物的毒性反应进行了研究。在不同浓度（5、10 和 20 毫克/升）的 GO 存在下，在受镉污染的水生系统中培育黄麻幼苗。在这项工作中评估了几个参数，包括干生物量、叶绿素含量、活性氧水平和抗氧化酶活性。结果表明GO暴露对植物Cd耐受性的影响呈浓度依赖性；在低浓度下，GO可以促进黄麻的生长，刺激抗氧化酶的活性，减少氧化应激，促进黄麻幼苗对镉的吸收，提高对镉的耐受性。然而，高浓度的 GO 会抑制植物生长，减少 Cd 吸收，并增加氧化应激。该研究开发了 GO 纳米片在低浓度下修复 Cd 的可能应用；然而，它仍处于探索的早期阶段。此外，释放高浓度 GO 的潜在风险需要进一步研究。