Phosphoenolpyruvate carboxylase activity in ear organs is related to protein concentration in grains of winter wheat

被引：14

作者：

Zhang, Y. H. ^{[1
]}

Wang, Z. M. ^{[1
]}

Huang, Q. ^{[1
]}

Shu, W. ^{[1
]}

机构：

[1] China Agr Univ, Coll Agron & Biotechnol, Key Lab Crop Cultivat & Farming Syst, Minist Agr, Beijing 100094, Peoples R China

来源：

JOURNAL OF CEREAL SCIENCE | 2008年 / 47卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ear organs; phosphoenolpyruvate carboxylase; protein content; grain weight; wheat;

D O I：

10.1016/j.jcs.2007.04.011

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

The relationship between phosphoenolpyruvate carboxylase (PEPC) activities in flag leaf blade and ear organs (glume and grain) and protein content of grain as well as grain weight after flowering were studied in different winter wheat (Triticum aestivum L.) genotypes. Results showed higher PEPC activity in the developing grain than in flag leaf blade and glume during grain development. For 16 of the genotypes studied, the mean PEPC activity in the developing grain or glume at 15 and 25 days after flowering was significantly and positively correlated with final protein content of grain. Enzyme activities in glume and flag leaf blade were positively correlated with final grain weight but the activity in developing grain was weakly and negatively correlated with grain weight. The overall data suggest that PEPC may be involved in protein biosynthesis during grain development, and it may have an important role in regulating carbon and nitrogen metabolism in the ear of wheat. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：386 / 391

页数：6

共 38 条

[1] THE PARTITIONING OF NITRATE ASSIMILATION BETWEEN ROOT AND SHOOT OF HIGHER-PLANTS [J].