Mahmood Faisal, Zehra Syeda Sadaf, Hasan Murtaza, Zafar Ayesha, Tariq Tuba, Abdullah Muhammad, Nazir Muniba Anum, Jamil Muhammad, Hassan Shahbaz Gul, Huang Xue, Javed Hafiz Umer, Shu Xugang
Department of Botany, The Islamia University, Bahawalpur63100, Pakistan.
Department of Biotechnology, The Islamia University of Bahawalpur, Bahawalpur63100, Pakistan.
ACS Omega. 2023 Jan 31;8(6):5836-5849. doi: 10.1021/acsomega.2c07545. eCollection 2023 Feb 14.
Massive accumulation of heavy metals in agricultural land as a result of enhanced levels of toxicity in the soil is an emerging global concern. Among various metals, zinc contamination has severe effects on plant and human health through the food chain. To remove such toxicity, a nanotechnological neutralizer, cobalt oxide nanoballs (CoO Nbs) were synthesized by using the extract of . The CoO Nbs were well characterized via UV-vis spectrophotometry, scanning electron microscopy, and X-ray diffraction techniques. Green-synthesized CoO Nbs were exposed over and at different concentrations (25, 50, 75, and 100 ppm). Highly significant results were observed for plant growth by the application of CoO Nbs at 100 ppm, thereby increasing the root length (35%), shoot length (48%), fresh weight (44%), and dry weight (40%) of the species with respect to the control. Furthermore, physiological parameters including chlorophyll contents, relative water contents, and osmolyte contents like proline and sugar showed a prominent increase. The antioxidant activity and atomic absorption supported and justified the positive response to using CoO Nbs that mitigated the heavy-metal zinc stress by improving the plant growth. Hence, the biocompatible CoO Nbs counteract the zinc toxicity for governing and maintaining plant growth. Such nanotechnological tools can therefore step up the cropping system and overcome toxicity to meet the productivity demand along with the development of agricultural management strategies.
由于土壤中毒性水平的提高，农业土地中重金属的大量积累已成为一个新出现的全球问题。在各种金属中，锌污染通过食物链对植物和人类健康产生严重影响。为了消除这种毒性，利用[具体植物名称]的提取物合成了一种纳米技术中和剂——氧化钴纳米球（CoO Nbs）。通过紫外可见分光光度法、扫描电子显微镜和X射线衍射技术对CoO Nbs进行了充分表征。将绿色合成的CoO Nbs以不同浓度（25、50、75和100 ppm）施用于[具体植物名称]和[具体植物名称]。在100 ppm的CoO Nbs处理下，观察到对植物生长有极显著的结果，相对于对照，[具体植物名称]的根长增加了35%、茎长增加了48%、鲜重增加了44%、干重增加了40%。此外，包括叶绿素含量、相对含水量以及脯氨酸和糖等渗透溶质含量在内的生理参数也显著增加。抗氧化活性和原子吸收支持并证明了使用CoO Nbs的积极反应，即通过改善植物生长减轻了重金属锌胁迫。因此，生物相容性的CoO Nbs可对抗锌毒性以调控和维持植物生长。这样的纳米技术工具因此可以提升种植系统并克服毒性，以满足生产力需求并推动农业管理策略的发展。
