AMMONIUM INHIBITION OF NITRATE UPTAKE BY THE DIATOM, PHAEODACTYLUM-TRICORNUTUM

被引：83

作者：

CRESSWELL, RC

SYRETT, PJ

机构：

[1] Department of Botany and Microbiology, University College of Swansea, Swansea, Wales

来源：

PLANT SCIENCE LETTERS | 1979年 / 14卷 / 04期

关键词：

D O I：

10.1016/S0304-4211(79)90263-3

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Cells of Phaeodactylum tricornutum have a mechanism for uptake of nitrate which leads to its accumulation. The uptake system was absent from ammonium-grown cells but became active during incubation for 2 h with 1.0 μM nitrate. Nitrate uptake into the cells was stopped by addition of 0.3 mM ammonium chloride; it recommenced as soon as the added ammonium had disappeared. It is concluded that ammonium (or a product of its assimilation) can inhibit nitrate metabolism by inhibiting uptake of nitrate. © 1979 Elsevier/North-Holland Scientific Publishers Ltd.

引用

页码：321 / 325

页数：5

共 13 条

[1] LIGHT AND DARK UPTAKE OF NITRATE AND AMMONIUM BY LARGE OCEANIC DINOFLAGELLATES - PYROCYSTIS-NOCTILUCA, PYROCYSTIS-FUSIFORMIS, AND DISSODINIUM-LUNULA [J].