Harvesting more grain zinc of wheat for human health
Chen, Xin-Ping and Zhang, Yue-Qiang and Tong, Yi-Ping and Xue, Yan-Fang and Liu, Dun-Yi and Zhang, Wei and Deng, Yan and Meng, Qing-Feng and Yue, Shan-Chao and Yan, Peng and Cui, Zhen-Ling and Shi, Xiao-Jun and Guo, Shi-Wei and Sun, Yi-Xiang and Ye, You-Liang and Wang, Zhao-Hui and Jia, Liang-Liang and Ma, Wen-Qi and He, Ming-Rong and Zhang, Xi-Ying and Kou, Chang-Lin and Li, Yan-Ting and Tan, De-Shui and Çakmak, İsmail and Zhang, Fu-Suo and Zou, Chun-Qin (2017) Harvesting more grain zinc of wheat for human health. Scientific Reports, 7 . ISSN 2045-2322
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Official URL: http://dx.doi.org/10.1038/s41598-017-07484-2
Increasing grain zinc (Zn) concentration of cereals for minimizing Zn malnutrition in two billion people represents an important global humanitarian challenge. Grain Zn in field-grown wheat at the global scale ranges from 20.4 to 30.5 mg kg(-1), showing a solid gap to the biofortification target for human health (40 mg kg(-1)). Through a group of field experiments, we found that the low grain Zn was not closely linked to historical replacements of varieties during the Green Revolution, but greatly aggravated by phosphorus (P) overuse or insufficient nitrogen (N) application. We also conducted a total of 320-pair plots field experiments and found an average increase of 10.5 mg kg(-1) by foliar Zn application. We conclude that an integrated strategy, including not only Zn-responsive genotypes, but of a similar importance, Zn application and field N and P management, are required to harvest more grain Zn and meanwhile ensure better yield in wheat-dominant areas.
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