School of Agriculture and Food Sciences , The University of Queensland , St. Lucia , Queensland 4072 , Australia.
J Agric Food Chem. 2018 Mar 21;66(11):2572-2579. doi: 10.1021/acs.jafc.7b04153. Epub 2017 Nov 10.
The effects of foliar-applied ZnO nanoparticles (ZnO NPs) and ZnSO on the winter wheat ( Triticum aestivum L.) grain yield and grain quality were studied under field conditions, with the distribution and speciation of Zn within the grain examined using synchrotron-based X-ray fluorescence microscopy and X-ray absorption spectroscopy. Although neither of the two Zn compounds improved the grain yield or quality, both increased the grain Zn concentration (average increments were 5 and 10 mg/kg for ZnSO and ZnO NP treatments, respectively). Across all treatments, this Zn was mainly located within the aleurone layer and crease of the grain, although the application of ZnO NPs also slightly increased Zn within the endosperm. This Zn within the grain was found to be present as Zn phosphate, regardless of the form in which Zn was applied. These results indicate that the foliar application of ZnO NPs appears to be a promising approach for Zn biofortification, as required to improve human health.
采用基于同步加速器的 X 射线荧光显微镜和 X 射线吸收光谱法，研究了叶面喷施氧化锌纳米粒子（ZnO NPs）和 ZnSO4 对冬小麦（Triticum aestivum L.）籽粒产量和品质的影响，考察了籽粒内 Zn 的分布和形态。尽管这两种 Zn 化合物都没有提高籽粒产量或品质，但都增加了籽粒 Zn 浓度（ZnSO4 和 ZnO NP 处理的平均增量分别为 5 和 10mg/kg）。在所有处理中，这种 Zn 主要位于籽粒的糊粉层和腹沟内，尽管施用 ZnO NPs 也略微增加了胚乳内的 Zn。无论施用何种形式的 Zn，籽粒内的 Zn 都被发现以 Zn 磷酸盐的形式存在。这些结果表明，叶面喷施 ZnO NPs 似乎是一种有前途的 Zn 生物强化方法，因为这是改善人类健康所必需的。
