银纳米颗粒通过增强金属植物稳定化和提高抗氧化反应来增强植物的抗毒性金属相关的植物毒性。
Silver nanoparticles strengthen against toxic metal-related phytotoxicity via enhanced metal phytostabilization and improved antioxidant responses.
机构信息
Department of Chemical Engineering, Osun State University, Osogbo, Nigeria.
Department of Pure and Applied Chemistry, Osun State University, Osogbo, Nigeria.
出版信息
Int J Phytoremediation. 2023;25(12):1676-1686. doi: 10.1080/15226514.2023.2187224. Epub 2023 Mar 10.
This study investigated the phytostabilization and plant-promoting abilities of silver nanoparticles (AgNPs). Twelve seeds were planted in water and AgNPs (10, 15 and 20 mg mL) irrigated soil for 21 days on soil containing 0.32 ± 0.01, 3.77 ± 0.03, 3.64 ± 0.02, 69.91 ± 9.44 and 13.17 ± 0.11 mg kg of As, Cr, Pb, Mn and Cu, respectively. In soil treated with AgNPs, the metal contents were reduced by 75%, 69%, 62%, 86%, and 76%. The different AgNPs concentrations significantly reduced accumulation of As, Cr, Pb, Mn, and Cu in roots by 80%, 40%, 79%, 57%, and 70%, respectively. There were also reductions in shoots by 100%, 76%, 85%, 64%, and 80%. Translocation factor, bio-extraction factor and bioconcentration factor demonstrated a phytoremediation mechanism based on phytostabilization. Shoots, roots, and vigor index improved by 4%, 16%, and 9%, respectively in grown with AgNPs. Also, AgNPs increased antioxidant activity, carotenoids, chlorophyll a and chlorophyll b by 9%, 56%, 64%, and 63%, respectively, while decreasing malondialdehyde contents in by 35.67%. This study discovered that AgNPs improved the phytostabilization of toxic metals while also contributing to health-promoting properties.
本研究调查了银纳米粒子（AgNPs）的植物稳定化和植物促进能力。将 12 颗种子种植在水中，并用 AgNPs（10、15 和 20mg/mL）灌溉含有 0.32±0.01、3.77±0.03、3.64±0.02、69.91±9.44 和 13.17±0.11mgkg 的 As、Cr、Pb、Mn 和 Cu 的土壤，持续 21 天。在添加 AgNPs 的土壤中，金属含量分别降低了 75%、69%、62%、86%和 76%。不同浓度的 AgNPs 显著降低了根中 As、Cr、Pb、Mn 和 Cu 的积累量，分别降低了 80%、40%、79%、57%和 70%。在地上部分也降低了 100%、76%、85%、64%和 80%。转运因子、生物提取因子和生物浓缩因子表明了一种基于植物稳定化的植物修复机制。在添加 AgNPs 的条件下，地上部分、根部分和活力指数分别提高了 4%、16%和 9%。此外，AgNPs 还提高了抗氧化活性、类胡萝卜素、叶绿素 a 和叶绿素 b，分别提高了 9%、56%、64%和 63%，同时降低了 MDA 含量 35.67%。本研究发现，AgNPs 提高了有毒金属的植物稳定化作用，同时也促进了植物的健康促进特性。
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