期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 66, 期 37, 页码 9645-9656出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.8b03840
关键词
bioaccumulation; dissolution; residual zinc; transformation; translocation factor; ZnO nanoparticles
资金
- United States Agency for International Development (USAID) Feed the Future Soil Fertility Technology Adoption, Policy Reform and Knowledge Management Project
- U.S. Department of Agriculture (USDA)-NIFA Nanotechnology for Agriculture and Food Systems [2016-67021-24985]
This study evaluated weathered and fresh ZnO-nanoparticles and Zn-salt effects on nutrient acquisition and redistribution in wheat. Weathered and fresh ZnO-nanoparticles and Zn-salt significantly increased grain yield by 15% and 29%, respectively. Postharvest soil acidification indicated ZnO-nanoparticles dissolved during growth. Zn was significantly bioaccumulated from both Zn types, but with low root-to-shoot bioaccumulation efficiency: 24% and 20% for weathered nanoparticles and salt, and 48% and 30% for fresh nanoparticles and salt. Grain Zn content was increased 186% and 229% by weathered nanoparticles and salt, and 229% and 300% by fresh nanoparticles and salt. Shoot-to-grain translocation efficiency was high: 167% and 177% for weathered nanoparticles and salt, and 209% and 155% for fresh nanoparticles and salt. However, Zincon assay indicated grain Zn does not exist as ions. This study demonstrates that ZnO-nanoparticles and Zn-salt vary in their effects on nutrient acquisition in wheat, with relevance for biofortification of Zn for human nutrition.
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