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Protective effects of cerium oxide nanoparticles in grapevine (Vitis vinifera L.) cv. Flame Seedless under salt stress conditions
Ecotoxicology and Environmental Safety ( IF 6.8 ) Pub Date : 2021-06-02 , DOI: 10.1016/j.ecoenv.2021.112402
Gholamreza Gohari 1 , Elnaz Zareei 2 , Havzhin Rostami 1 , Sima Panahirad 2 , Muhittin Kulak 3 , Habib Farhadi 1 , Mojtaba Amini 4 , Maria Del Carmen Martinez-Ballesta 5 , Vasileios Fotopoulos 6
Affiliation  

High levels of soil salinity can cause substantial decline in growth and productivity of crops worldwide, thus representing a major threat to global agriculture. In recent years, engineered nanoparticles (NPs) have been deemed as a promising alternative in combating abiotic stress factors, such as salinity. In this context, the present study was designed to explore the potential of cerium oxide nanoparticles (CeO2NPs) in alleviating salt stress in grapevine (Vitis vinifera L. cv. Flame Seedless) cuttings. Specifically, the interaction between CeO2 NPs (25, 50 and 100 mg L−1) and salinity (25 and 75 mM NaCl) was evaluated by assaying an array of agronomic, physiological, analytical and biochemical parameters. Treatments with CeO2 NPs, in general, alleviated the adverse impacts of salt stress (75 mM NaCl) significantly improving relevant agronomic traits of grapevine. CeO2 NPs significantly ameliorated chlorophyll damage under high levels of salinity. Furthermore, the presence of CeO2 NPs attenuated salinity-induced damages in grapevine as indicated by lower levels of proline, MDA and EL; however, H2O2 content was not ameliorated by the presence of CeO2 NPs under salt stress. Additionally, salinity caused substantial increases in enzymatic activities of GP, APX and SOD, compared with control plants. Similar to stress conditions, all concentrations of CeO2 NPs triggered APX activity, while the highest concentration of CeO2 NPs significantly increased GP activity. However, CeO2 NPs did not significantly modify SOD activity. Considering mineral nutrient profile, salinity increased Na and Cl content as well as Na/K ratio, while it decreased K, P and Ca contents. Nevertheless, the presence of CeO2 NPs did not lead to significant alterations in Na, K and P content of salt-stressed plants. Taken together, current findings suggest that CeO2 NPs could be employed as promising salt-stress alleviating agents in grapevine.



中文翻译:

氧化铈纳米颗粒在葡萄 ( Vitis vinifera L.) cv. 中的保护作用。盐胁迫条件下的火焰无核

高水平的土壤盐分会导致世界范围内农作物的生长和生产力大幅下降,从而对全球农业构成重大威胁。近年来,工程纳米粒子 (NPs) 被认为是对抗非生物胁迫因素(如盐度)的有前途的替代品。在此背景下,本研究旨在探索氧化铈纳米颗粒 (CeO 2 NPs) 在减轻葡萄 ( Vitis vinifera L. cv. Flame Seedless) 插条中的盐胁迫方面的潜力。具体而言,通过测定一系列农艺、生理、分析和生化参数来评估CeO 2 NP(25、50 和 100 mg L -1)与盐度(25 和 75 mM NaCl)之间的相互作用。用 CeO 处理总的来说,2 NPs 减轻了盐胁迫(75 mM NaCl)的不利影响,显着改善了葡萄的相关农艺性状。CeO 2 NPs 显着改善了高盐度下的叶绿素损伤。此外,如脯氨酸、MDA 和 EL 水平较低所表明的,CeO 2 NPs的存在减轻了葡萄藤中盐度引起的损害。然而,在盐胁迫下,CeO 2 NPs的存在并未改善H 2 O 2含量。此外,与对照植物相比,盐度导致 GP、APX 和 SOD 的酶活性显着增加。与应力条件类似,所有浓度的 CeO 2NPs 触发APX 活性,而最高浓度的CeO 2 NPs 显着增加GP 活性。然而,CeO 2 NPs 并未显着改变SOD 活性。考虑到矿物营养成分,盐度增加了 Na 和 Cl 含量以及 Na/K 比,同时降低了 K、P 和 Ca 含量。尽管如此,CeO 2 NPs的存在并未导致盐胁迫植物的 Na、K 和 P 含量发生显着变化。综上所述,目前的研究结果表明,CeO 2 NPs 可用作葡萄树中的有前途的盐胁迫缓解剂。

更新日期:2021-06-02
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