Photosynthesis,Metabolite Composition and Anatomical Structure of Oryza sativa and Two Wild Relatives,*** and ***

作     者：Jwakyung SUNG Suyeon LEE Jong-Wook CHUNG Gerald EDWARDS Hojin RYU Taewan KIM 

作者机构：National Institute of Agricultural ScienceRural Development Administration(RDA)WanjuJeollabu-do 55365Korea Department of Industrial Plant Science and TechnologyChungbuk National UniversityCheongju 28644Korea School of Biological ScienceWashington State UniversityPullmanWA 99164-4236USA Department of BiologyChungbuk National UniversityCheongju 28644Korea Department of Plant Resources and Science and Institute of Ecological PhytochemistryHankyung National UniversityAnseong 17579Korea 

出 版 物：《Rice science》 (水稻科学（英文版）)

年 卷 期：2017年第24卷第4期

页      面：218-227页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 09[农学] 0901[农学-作物学] 0836[工学-生物工程] 0902[农学-园艺学] 

基　　金：support of Cooperative Research Program for Agriculture Science&Technology Development(Grant No.PJ010899) Rural Development Administration Republic of Korea 

主　　题：carbohydrate photosynthesis rate nitrogen assimilation metabolite composition leaf rice wild relative 

摘      要：Photosynthesis, enzyme activities and metabolite pools associated with primary carbon metabolism in leaves were studied in O. grandiglumis and O. alta （wild relatives of rice which produce high biomass） versus O. sativa （a japonica cultivar and a indica-japonica hybrid） to assess their potential for identifying traits which might be utilized to enhance rice productivity. The wild relatives had higher rates of photosynthesis on a fresh weight basis, and higher water use efficiency than the O. sativa lines. There were no striking differences in activities of a number of key enzymes in carbon and nitrogen metabolism between the wild relatives and cultivated rice lines. Along with higher rates of photosynthesis on a fresh weight basis, the leaves of the two wild species had higher nitrate content, higher levels of starch, glucose and fructose, and higher levels of organic acids （malate, succinate and acetate）, compared to the O. sativa lines. The results suggested that O. grandiglumis and O. alta have differences in physiology and primary metabolism which might be exploited to improve growth and productivity of cultivated rice.