The impact of global warming on the uptake of arsenic into rice plants

全球变暖对水稻吸收砷的影响

• 批准号: 270208124
• 负责人: Professorin Dr. E. Marie Muehe, Ph.D.
• 金额: --
• 依托单位: Department of Earth System Science
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/270208124?language=en
• 关键词: impact; global; warming; uptake; arsenic

Rice is the staple food worldwide. Unfortunately, global rice yield is already falling behind population growth. One of the reasons for this is the presence of highly toxic arsenic in many South and Southeast Asian paddy soils, which is known to decrease rice growth and productivity. The current change in Earths climate is known to cause land loss due to desertification and inundation and lower (rice) crop yields, thus, threating the global food security. According to the highest emission scenario for greenhouse gases presented in the 5th assessment report of the Intergovernmental Panel on Climate Change, global annual temperatures could rise by more than 5°C by the year 2100. How increased temperatures and greenhouse gas concentrations affect the uptake of arsenic into rice and ultimately the quality and production of this crop is unknown and the main research question of this proposal.

大米是全世界的主食。不幸的是，全球稻米产量已经落后于人口增长。造成这种情况的原因之一是许多南亚和东南亚的稻田土壤中含有剧毒的砷，众所周知，砷会降低水稻的生长和生产力。众所周知，目前地球气候的变化会导致荒漠化和洪水导致土地流失和（水稻）作物产量下降，从而威胁全球粮食安全。根据政府间气候变化专门委员会第五次评估报告中提出的温室气体最高排放情景，到2100年，全球年气温可能上升5°C以上。气温和温室气体浓度的升高如何影响水稻对砷的吸收，并最终影响水稻的品质和产量，这也是本提案的主要研究问题。