文献类型：期刊文献

中文题名：A possible mechanism of mineral responses to elevated atmospheric CO_2 in rice grains

英文题名：A possible mechanism of mineral responses to elevated atmospheric CO2 in rice grains

作者：Guo Jia[1,2] Zhang Ming-qian[2,3] Wang Xiao-wen[1,4] Zhang Wei-jian[2,5]

第一作者：GUO Jia;郭嘉

通信作者：Zhang, WJ[1]

机构：[1]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China;[2]Nanjing Agr Univ, Inst Appl Ecol, Nanjing 210095, Jiangsu, Peoples R China;[3]China Tobacco Fujian Ind Co Ltd, Ctr Technol, Xiamen 361021, Peoples R China;[4]Chinese Acad Engn, Beijing 100088, Peoples R China;[5]Chinese Acad Agr Sci, Key Lab Crop Ecol Physiol & Prod, Inst Crop Sci, Minist Agr, Beijing 100081, Peoples R China

年份：2015

卷号：0

期号：1

起止页码：50-57

中文期刊名：农业科学学报：英文版

外文期刊名：JOURNAL OF INTEGRATIVE AGRICULTURE

收录：CSTPCD;;Scopus;CSCD:【CSCD2015_2016】；

基金：This work was supported by the National Natural Science Foundation of China (31200369), the Lecture and Study for Outstanding Scholars from Home and Abroad, Chinese Academy of Forestry (CAF), 2014. We are grateful to Dr. Hu Shuijin in Department of Plant Pathology, North Carolina State University for his constructive suggestions to this research, Dr. Zhu Jianguo and Dr. Xie Zhubin in the Institute of Soil Science, Chinese Academy of Sciences, China, for his great comments on this investigation.

语种：英文

中文关键词：大气CO2;矿物质;机制;米粒;CO2浓度升高;高浓度CO2;反应;中国东部地区

外文关键词：climate change; free-air CO2 enrichment (FACE); hidden hunger; nutritional quality; paddy field; rice

分类号：S831.5;X131

摘要：Increasing attentions have been paid to mineral concentration decrease in milled rice grains caused by CO2 enrichment, but the mechanisms still remain unclear. Therefore, mineral(Ca, Mg, Fe, Zn and Mn) translocation in plant-soil system with a FACE(Free-air CO2 enrichment) experiment were investigated in Eastern China after 4-yr operation. Results mainly showed that:(1) elevated CO2 significantly increased the biomass of stem and panicle by 21.9 and 24.0%, respectively, but did not affect the leaf biomass.(2) Elevated CO2 significantly increased the contents of Ca, Mg, Fe, Zn, and Mn in panicle by 61.2, 28.9, 87.0, 36.7, and 66.0%, respectively, and in stem by 13.2, 21.3, 47.2, 91.8, and 25.2%, respectively, but did not affect them in leaf.(3) Elevated CO2 had positive effects on the weight ratio of mineral/biomass in stem and panicle. Our results suggest that elevated CO2 can favor the translocation of Ca, Mg, Fe, Zn, and Mn from soil to stem and panicle. The CO2-led mineral decline in milled rice grains may mainly attribute to the CO2-led unbalanced stimulations on the translocations of minerals and carbohydrates from vegetative parts(e.g., leaf, stem, branch and husk) to the grains.
Increasing attentions have been paid to mineral concentration decrease in milled rice grains caused by CO2 enrichment, but the mechanisms still remain unclear. Therefore, mineral (Ca, Mg, Fe, Zn and Mn) translocation in plant-soil system with a FACE (Free-air CO2 enrichment) experiment were investigated in Eastern China after 4-yr operation. Results mainly showed that: (1) elevated CO2 significantly increased the biomass of stem and panicle by 21.9 and 24.0%, respectively, but did not affect the leaf biomass. (2) Elevated CO2 significantly increased the contents of Ca, Mg, Fe, Zn, and Mn in panicle by 61.2, 28.9, 87.0, 36.7, and 66.0%, respectively, and in stem by 13.2, 21.3, 47.2, 91.8, and 25.2%, respectively, but did not affect them in leaf. (3) Elevated CO2 had positive effects on the weight ratio of mineral/biomass in stem and panicle. Our results suggest that elevated CO2 can favor the translocation of Ca, Mg, Fe, Zn, and Mn from soil to stem and panicle. The CO2-led mineral decline in milled rice grains may mainly attribute to the CO2-led unbalanced stimulations on the translocations of minerals and carbohydrates from vegetative parts (e.g., leaf, stem, branch and husk) to the grains.