Elevated CO_(2) increases shoot growth but not root growth and C:N:P stoichiometry of Suaeda aralocaspica plants

作     者：WANG Lei FAN Lianlian JIANG Li TIAN Changyan WANG Lei;FAN Lianlian;JIANG Li;TIAN Changyan

作者机构：State Key Laboratory of Desert and Oasis EcologyXinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China University of Chinese Academy of SciencesBeijing 100049China Research Center for Ecology and Environment of Central AsiaChinese Academy of SciencesUrumqi 830011China 

出 版 物：《Journal of Arid Land》 (干旱区科学（英文版）)

年 卷 期：2021年第13卷第11期

页      面：1155-1162页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：This research was supported by the Strategic Priority Research Program of Chinese Academy of Sciences(XDA2003010302) the National Natural Science Foundation of China(32171514) the State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences(E1510107) 

主　　题：biomass CO_(2)elevation C:N:P stoichiometry seed heteromorphism Suaeda aralocaspica 

摘      要：The purpose of the current study was to investigate the eco-physiological responses,in terms of growth and C:N:P stoichiometry of plants cultured from dimorphic seeds of a single-cell C4 annual Suaeda aralocaspica(Bunge)Freitag and Schütze under elevated CO_(2).A climatic chamber experiment was conducted to examine the effects of ambient(720μg/L)and CO_(2)-enriched(1440μg/L)treatments on these responses in *** at vegetative and reproductive stages in *** showed that elevated CO_(2) significantly increased shoot dry weight,but decreased N:P ratio at both growth *** grown from dimorphic seeds did not exhibit significant differences in growth and C:N:P stoichiometric *** transition from vegetation to reproductive stage significantly increased shoot:root ratio,N and P contents,but decreased C:N,C:P and N:P ratios,and did not affect shoot dry ***,our results indicate that the changes in N:P and C:N ratios between ambient and elevated CO_(2) are mainly caused by the decrease of N content under elevated CO_(2).These results provide an insight into nutritional metabolism of single-cell C4 plants under climate change.