DOI: 10.1016/j.fcr.2020.107753
论文题名: Responses of wheat and rice grain mineral quality to elevated carbon dioxide and canopy warming
作者: Wang J. ; Li L. ; Lam S.K. ; Liu X. ; Pan G.
刊名: Field Crops Research
ISSN: 3784290
出版年: 2020
卷: 249 语种: 英语
英文关键词: Canopy air warming
; Climate change
; Free-air CO2enrichment (FACE)
; Grain quality
; Rice-winter wheat rotation
Scopus关键词: biochemical composition
; canopy
; carbon dioxide
; carbon dioxide enrichment
; climate change
; climate effect
; concentration (composition)
; experimental study
; food quality
; global warming
; rice
; wheat
; Triticum aestivum
英文摘要: 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, warming consistently increased chemical element concentrations by 4.0-81.6% for both crops. Under concurrent elevated [CO2] and warming, macro-elements concentrations were unaffected throughout two consecutive years. Clearly, the positive effect of canopy warming moderately mitigates the negative impact of elevated [CO2] on grain chemical elements. However, greater increases in Mn, Mo, Cr, Ni, Cd and Pb concentrations were observed in concurrent elevated [CO2] and warming treatment compared to elevated [CO2] or warming alone. This indicates that elevated [CO2] and canopy warming act synergistically on heavy metal concentrations, which aggravates the threat of heavy metal toxicity in grain. Therefore, improving grain quality should be endeavored to address the adverse effect from simultaneously elevated [CO2] and warming. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158515
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory for Humid Subtropical Eco-geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, 350007, China; Institute of Resource, Ecosystem and Environment of Agriculture, and Center of Climate Change and Agriculture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China; School of Geographical Science, Fujian Normal University, Fuzhou, 350007, China; School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
Recommended Citation:
Wang J.,Li L.,Lam S.K.,et al. Responses of wheat and rice grain mineral quality to elevated carbon dioxide and canopy warming[J]. Field Crops Research,2020-01-01,249