Increasing CO2 threatens human nutrition

Article

关键词: CARBON-DIOXIDE CONCENTRATION;    ELEVATED CO2;    ENRICHMENT FACE;    SPRING WHEAT;    GRAIN-YIELD;    NITROGEN;    QUALITY;    PROTEIN;    CEREALS;    GROWTH;   

DOI  :  10.1038/nature13179

来源: SCIE

【 摘 要 】

Dietary deficiencies of zinc and iron are a substantial global public health problem. An estimated two billion people suffer these deficiencies(1), causing a loss of 63 million life-years annually(2,3). Most of these people depend on C-3 grains and legumes as their primary dietary source of zinc and iron. Here we report that C-3 grains and legumes have lower concentrations of zinc and iron when grown under field conditions at the elevated atmospheric CO2 concentration predicted for the middle of this century. C-3 crops other than legumes also have lower concentrations of protein, whereas C-4 crops seem to be less affected. Differences between cultivars of a single crop suggest that breeding for decreased sensitivity to atmospheric CO2 concentration could partly address these new challenges to global health.

【 授权许可】

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