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Comparative physiological and metabolomic analyses revealed that foliar spraying with zinc oxide and silica nanoparticles modulates metabolite profiles in cucumber (Cucumis sativus L.)
Food and Energy Security ( IF 4.0 ) Pub Date : 2021-01-15 , DOI: 10.1002/fes3.269 Sen Li 1, 2 , Juan Liu 1, 2 , Yibo Wang 3 , Yang Gao 1, 2 , Zhipeng Zhang 1, 2 , Jin Xu 1, 2 , Guoming Xing 1, 2
Food and Energy Security ( IF 4.0 ) Pub Date : 2021-01-15 , DOI: 10.1002/fes3.269 Sen Li 1, 2 , Juan Liu 1, 2 , Yibo Wang 3 , Yang Gao 1, 2 , Zhipeng Zhang 1, 2 , Jin Xu 1, 2 , Guoming Xing 1, 2
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Previous studies have reported crop toxicity of zinc oxide nanoparticles (ZnO‐NPs) by root exposure and that silica nanoparticles (SiO2‐NPs) modulate crop growth and soil physicochemical properties. In this study, we determined the effects of foliar exposure to ZnO‐NPs and SiO2‐NPs on the growth and metabolomic profile of cucumber seedlings. Foliar spraying with ZnO‐NPs and SiO2‐NPs improved cucumber plant performance, as indicated by increases in chlorophyll contents, chlorophyll fluorescence parameters, and the fresh/dry weights of leaves and roots. According to metabolomic analysis results, foliar exposure to ZnO‐NPs and SiO2‐NPs induced pronounced changes in the metabolome, especially in the leaves. Besides, ZnO‐NP or SiO2‐NP treatments either upregulated or downregulated the contents of amino acids, organic acids, sugars and glycosides, and secondary metabolites, indicating that the two NPs affected both primary metabolism and secondary metabolism. The elevated levels of several secondary metabolites involved in antioxidative defense imply that the two NPs potentially regulate stress resistance in plants. Overall, these results indicate that different from root exposure, foliar exposure to ZnO‐NPs or SiO2‐NPs is beneficial to plant growth. The present study provides a theoretical basis for the environmental assessment and application of these two NPs in agricultural production.
中文翻译：
比较的生理和代谢组学分析表明，叶面喷施氧化锌和二氧化硅纳米颗粒可调节黄瓜（Cucumis sativus L.）的代谢产物谱。
以前的研究已经报道了根部暴露对氧化锌纳米颗粒（ZnO-NPs）的农作物毒性，而二氧化硅纳米颗粒（SiO 2 -NPs）则调节作物的生长和土壤理化特性。在这项研究中，我们确定了叶片暴露于ZnO-NPs和SiO 2 -NPs对黄瓜幼苗生长和代谢组学谱的影响。叶绿素含量，叶绿素荧光参数以及叶和根的鲜重/干重增加表明，ZnO-NPs和SiO 2 -NPs的叶面喷施改善了黄瓜的性能。根据代谢组学分析结果，叶面暴露于ZnO-NPs和SiO 2 -NPs会引起代谢组的显着变化，尤其是叶片。此外，ZnO-NP或SiO2 NP处理上调或下调氨基酸，有机酸，糖和糖苷以及次生代谢产物的含量，表明这两个NP影响一次代谢和二次代谢。参与抗氧化防御的几种次生代谢产物的水平升高表明这两个NP潜在地调节了植物的抗逆性。总体而言，这些结果表明，与根部暴露不同，叶面暴露于ZnO-NPs或SiO 2 -NPs对植物生长有利。本研究为这两个NP在农业生产中的环境评价和应用提供了理论依据。
更新日期：2021-02-22
中文翻译：
比较的生理和代谢组学分析表明，叶面喷施氧化锌和二氧化硅纳米颗粒可调节黄瓜（Cucumis sativus L.）的代谢产物谱。
以前的研究已经报道了根部暴露对氧化锌纳米颗粒（ZnO-NPs）的农作物毒性，而二氧化硅纳米颗粒（SiO 2 -NPs）则调节作物的生长和土壤理化特性。在这项研究中，我们确定了叶片暴露于ZnO-NPs和SiO 2 -NPs对黄瓜幼苗生长和代谢组学谱的影响。叶绿素含量，叶绿素荧光参数以及叶和根的鲜重/干重增加表明，ZnO-NPs和SiO 2 -NPs的叶面喷施改善了黄瓜的性能。根据代谢组学分析结果，叶面暴露于ZnO-NPs和SiO 2 -NPs会引起代谢组的显着变化，尤其是叶片。此外，ZnO-NP或SiO2 NP处理上调或下调氨基酸，有机酸，糖和糖苷以及次生代谢产物的含量，表明这两个NP影响一次代谢和二次代谢。参与抗氧化防御的几种次生代谢产物的水平升高表明这两个NP潜在地调节了植物的抗逆性。总体而言，这些结果表明，与根部暴露不同，叶面暴露于ZnO-NPs或SiO 2 -NPs对植物生长有利。本研究为这两个NP在农业生产中的环境评价和应用提供了理论依据。
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