Impacts of climate changes on crop physiology and food quality

被引:217
作者
DaMatta, Fabio M. [1 ]
Grandis, Adriana [2 ]
Arenque, Bruna C. [2 ]
Buckeridge, Marcos S. [2 ]
机构
[1] Univ Fed Vicosa, Dept Biol Vegetal, BR-36570000 Vicosa, MG, Brazil
[2] Univ Sao Paulo, Inst Biociencias, Dept Bot, Lab Fisiol Ecol Plantas LAFIECO, BR-05422970 Sao Paulo, Brazil
基金
巴西圣保罗研究基金会;
关键词
Food quality; Global climatic changes; Global warming; Plant physiology; Photosynthesis; Nitrogen; AIR CO2 ENRICHMENT; CARBON-DIOXIDE ENRICHMENT; ELEVATED ATMOSPHERIC CO2; YIELD RESPONSE; GRAIN QUALITY; PHOTOSYNTHETIC ACCLIMATION; SEED COMPOSITION; HIGH-TEMPERATURE; FLOWERING TIME; HEAT-STRESS;
D O I
10.1016/j.foodres.2009.11.001
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Carbon emissions related to human activities have been significantly contributing to the elevation of atmospheric [CO2] and temperature. More recently, carbon emissions have greatly accelerated, thus much stronger effects on crops are expected. Here, we revise literature data concerning the physiological effects of CO2 enrichment and temperature rise on crop species. We discuss the main advantages and limitations of the most used CO2-enrichment technologies, the Open-Top Chambers (OTCs) and the Free-Air Carbon Enrichment (FACE). Within the conditions expected for the next few years, the physiological responses of crops suggest that they will grow faster, with slight changes in development, such as flowering and fruiting, depending on the species. There is growing evidence suggesting that C-3 crops are likely to produce more harvestable products and that both C-3 and C-4 crops are likely to use less water with rising atmospheric [CO2] in the absence of stressful conditions. However, the beneficial direct impact of elevated [CO2] on crop yield can be offset by other effects of climate change, such as elevated temperatures and altered patterns of precipitation. Changes in food quality in a warmer, high-CO2 world are to be expected, e.g., decreased protein and mineral nutrient concentrations, as well as altered lipid composition. We point out that studies related to changes in crop yield and food quality as a consequence of global climatic changes should be priority areas for further studies, particularly because they will be increasingly associated with food security. (c) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1814 / 1823
页数:10
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