Responses of wheat and rice grain mineral quality to elevated carbon dioxide and canopy warming
Jianqing Wang, Lianqing Li, Shu Kee Lam, Xiaoyu Liu, Genxing Pan
Field Crops Research | ELSEVIER | Published : 2020
The impact of climate change on grain quality is a critical issue for human health. However, how grain chemical element composition responds to climate change stresses has been poorly addressed. An open-air field experiment was conducted to investigate the impacts of factorial combinations of [CO2] (elevated [CO2] (500 ppm) vs ambient [CO2] (410 ppm)) and canopy air warming (+ 2 °C) on grain chemical element concentrations for two consecutive years in a rice-wheat rotation system. Overall, elevated [CO2] decreased the concentrations of most chemical elements by 4.2-20.1% in grain, but remarkably increased grain Mn, Mo, Cr, Ni, Cd and Pb concentrations by 9.2-72.9% for both crops. In contrast..View full abstract
Awarded by National Key R&D Program of China
Awarded by National Natural Science Foundation of China
Awarded by state Special Fund for Agro-scientific Research in the Public Interest "Climate Change Impacts on Crop Production and Mitigation"
This work was financially supported by National Key R&D Program of China (2017YFD0300202) and by National Natural Science Foundation of China (31901165). Construction of the experiment system was funded by the state Special Fund for Agro-scientific Research in the Public Interest "Climate Change Impacts on Crop Production and Mitigation" under a grant number 200903003. The authors declare no conflict of interest.