GLUTAMINE INDUCES THE N-DEPENDENT ACCUMULATION OF MESSENGER-RNAS ENCODING PHOSPHOENOLPYRUVATE CARBOXYLASE AND CARBONIC-ANHYDRASE IN DETAHED MAIZE LEAF TISSUE

被引：48

作者：

SUGIHARTO, B

SUZUKI, I

BURNELL, JN

SUGIYAMA, T ^{[1
]}

机构：

[1] NAGOYA UNIV,SCH AGR,DEPT AGR CHEM,NAGOYA 46401,JAPAN

[2] QUEENSLAND UNIV TECHNOL,CTR MOLEC BIOTECHNOL,BRISBANE,QLD 4001,AUSTRALIA

来源：

PLANT PHYSIOLOGY | 1992年 / 100卷 / 04期

关键词：

D O I：

10.1104/pp.100.4.2066

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

We have used detached leaves to study the N-dependent control of expression of phosphoenolpyruvate carboxylase (PEPC) and carbonic anhydrase (CA) genes in maize (Zea mays L. cv Golden Cross Bantam T51). Following supplementation with an N-source and zeatin, PEPC and CA mRNA levels increased in leaves detached from N-deficient maize plants. Addition of methionine sulfoximine (MSX), a specific inhibitor of glutamine synthetase, inhibited the nitrate-dependent increase of PEPC and CA mRNA but did not affect the glutamine-dependent increase of PEPC and CA mRNA levels. Glutamine levels in detached maize leaves treated with various N sources in the presence or absence of MSX correlated with the levels of PEPC and CA mRNA. We conclude that glutamine is the most likely effector for controlling the N-dependent expression of PEPC and CA in maize plants.

引用

页码：2066 / 2070

页数：5

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