NITRATE REDUCTION IN COTYLEDONS OF CICER-ARIETINUM L - REGULATORY ROLE OF CYTOKININS

被引:17
作者
BUENO, MS
ALONSO, A
VILLALOBOS, N
机构
[1] UNIV SALAMANCA,FAC BIOL,DEPT BIOL VEGETAL FISIOL VEGETAL,E-37008 SALAMANCA,SPAIN
[2] UNIV SALAMANCA,FAC QUIM,DEPT QUIM ANALIT,E-37008 SALAMANCA,SPAIN
关键词
CICER ARIETINUM L CV CASTELLANA; CYTOKININS; EMBRYONIC AXIS; NITRATE REDUCTASE; NITRATE; NITRITE; COTYLEDONS;
D O I
10.1016/0168-9452(94)90085-X
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Application of different concentrations of kinetin to chick-pea seeds inhibits the nitrate reductase activity detected in cotyledons when the seeds are sown without a hormone. However, kinetin concentrations between 10(-6) and 10(-5) M, applied to excised cotyledons are able to induce nitrate reductase activity, which also becomes manifest in an active metabolism of nitrate and nitrite in the cotyledons. The development of nitrate reductase activity in excised cotyledons is due to synthesis of the enzyme, except when induction is carried out by applying low concentrations of cytokinins. In this case, apart from synthesis. an inactive nitrate reductase becomes activated.
引用
收藏
页码:117 / 124
页数:8
相关论文
共 19 条
[1]   EQUIVALENCE BETWEEN PFR AND CYCLIC-AMP IN THE INDUCTION OF D-USNIC ACID DEHYDROGENASE IN THE LICHEN EVERNIA-PRUNASTRI [J].
AVALOS, A ;
VICENTE, C .
PLANT PHYSIOLOGY, 1987, 84 (03) :803-807
[2]  
BRADFORD MM, 1976, ANAL BIOCHEM, V72, P248, DOI 10.1016/0003-2697(76)90527-3
[3]   COMPARATIVE STUDIES ON NITRATE REDUCTASE IN AGROSTEMMA-GITHAGO INDUCED BY NITRATE AND BENZYLADENINE [J].
DILWORTH, MF ;
KENDE, H .
PLANT PHYSIOLOGY, 1974, 54 (06) :821-825
[4]  
GAUDINOVA A, 1990, MOLECULAR ASPECTS OF HORMONAL REGULATION OF PLANT DEVELOPMENT, P225
[5]   THE EFFECT OF CYTOKININS ON NITRATE REDUCTASE-ACTIVITY [J].
GAUDINOVA, A .
BIOLOGIA PLANTARUM, 1990, 32 (02) :89-96
[6]   STUDIES BY ELECTRON-PARAMAGNETIC-RESONANCE SPECTROSCOPY OF THE MOLYBDENUM CENTER OF SPINACH (SPINACIA-OLERACEA) NITRATE REDUCTASE [J].
GUTTERIDGE, S ;
BRAY, RC ;
NOTTON, BA ;
FIDO, RJ ;
HEWITT, EJ .
BIOCHEMICAL JOURNAL, 1983, 213 (01) :137-142
[7]  
Kulaeva O. N., 1980, Plant growth substances 1979 [Skoog, F. (Editor)]., P119
[8]  
Lu J.-L., 1983, Acta Phytophysiologia Sinica, V9, P41
[9]   CYTOKININ ENHANCEMENT OF THE LIGHT INDUCTION OF NITRATE REDUCTASE TRANSCRIPT LEVELS IN ETIOLATED BARLEY LEAVES [J].
LU, JL ;
ERTL, JR ;
CHEN, CM .
PLANT MOLECULAR BIOLOGY, 1990, 14 (04) :585-594
[10]  
Marczenko Z, 1976, SPECTROPHOTOMETRIC D