农业环境科学学报2012，Vol.31Issue(7)：1264-1270,7.
开放式空气中CO2浓度增高(FACE)对常规粳稻蛋白质和氨基酸含量的影响
The Impact of Free Air CO2 Enrichment (FACE) on Protein and Amino Acids Concentration of Conventional Japonica Rice
摘要
Abstract
Rice( Oryza saliva L.) is one of the most important crops in the world and the first staple food in Asia, providing nutrition to a large proportion of the world's population. Rising atmospheric carbon dioxide concentration([CO2]) has numerious impacts on rice production. Compared with growth and grain yield, our understanding in the response of grain quality to elevatedfCO2] is very limited. A field experiment was carried out using the FACE(Free Air CO2 Enrichment) system to evaluate the effects of elevated CO2 concentration on nutrient quality of three conventional japonica varieties, Wuyunjing 21, Yangfujing 18 and Wujing 15 in 2009. Plants were grown at ambient or elevated(200 μmol·mol‐1 higher than ambient) CO2 concentrations. At maturity, the grains were harvested for protein and amino acids analysis. Elevated [C02] decreased protein concentration in milled rice of all tested varieties by 5.6% on average. The contents of total amino acids, essential amino acids and non-essential araino acids were declined under elevated[CO2] by 7.6%, 6.7% and 7.9%, respectively. The percentage of essential amino acids increased and that of the non-essential amino acids declined significantly, but relative concentrations of essential and non-essential amino acids did not show significant changes in response to elevated[CO2]. Concentrations of seven essential amino acids and eight non-essential amino acids were significantly decreased by elevated[CO2]. In general, the responses of Wuyunjing 21 to elevated[CO2] were significantly greater than that of Yangfujing 8 and Wujing 15. The above results suggested that the lower concentrations of rice protein and amino acids would be expected under the atmospheric environment in the middle of this century.关键词
FACE( Free Air CO2 Enrichment)/水稻/蛋白质/氨基酸Key words
FACE(Free Air CO2 Enrichment)/ rice/ protein/ amino acids分类
资源环境引用本文复制引用
周晓冬,赖上坤,周娟,王云霞,董桂春,朱建国,杨连新,王余龙..开放式空气中CO2浓度增高(FACE)对常规粳稻蛋白质和氨基酸含量的影响[J].农业环境科学学报,2012,31(7):1264-1270,7.基金项目
国家自然科学基金(31171460) （31171460）
科技部国际合作与交流项目(2010DFA22770) （2010DFA22770）
江苏省高校自然科学重大基础研究项目(11KJA210003) （11KJA210003）
江苏省作物栽培生理重点实验室开放课题 （）
江苏高校优势学科建设工程资助项目 （）
