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

来源：

PLANT SCIENCE | 1994年 / 95卷 / 02期

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

页码：117 / 124

页数：8

共 19 条

[1] EQUIVALENCE BETWEEN PFR AND CYCLIC-AMP IN THE INDUCTION OF D-USNIC ACID DEHYDROGENASE IN THE LICHEN EVERNIA-PRUNASTRI [J].