中国东北大豆与日本大豆品种PEPCase基因的多态性

摘要：

@@ Soybeans in Northeast of China are one of the most important genetic resources in the world.In order to use them effectively in soybean breeding, it is necessary to evaluate the main characteristics,especially the quality characteristics such as seed protein content.It is reported that the PEPCase activity in soybean seeds is positively correlated with the seed protein content and negatively correlated with the lipid content[1].PEPCase is also present in seeds of different species[2～4],and may play an important role in auino acid biosynthesis.PEPCase was detected in the protein bodies of developing wheat grains,possibly contributing to storage-protein biosynthesis[5]. A strong correlation between PEPCase activity and protein concentration in seeds of 13 soybean cultivars[1]indicates a possible rate-limiting role of the enzyme in seed storage-protein accumulation.In soybean,PEPCase is encoded by a small family of at least four highly homologous genes[6]and PEPCase catalyzes the carboxylation of phosphonenopyruvate to oxalacetic acid,which increases the number of carbon skeletons of amino acids.

机标关键词：中国、东北大豆、日本、大豆品种、基因的多态性、protein content、quality characteristics、strong correlation、Northeast of China、genetic resources、amino acids、the world

所属期刊栏目：31

分类号：S5(农作物)

资助基金：JIRCAS international project

在线出版日期：2005-11-17（万方平台首次上网日期，不代表论文的发表时间）

页数：共3页

页码：1233-1235