Regulation of Nitrate Reductase Activity by Abscisic Acid in Poplar (Populus deltoids) Leaves.

被引：0

作者：

Mishra, Ritika ^{[1
]}

Garg, Sanjay K. ^{[1
]}

Sengar, Rakesh Singh ^{[2
]}

机构：

[1] MJP Rohilkhand Univ, Dept Plant Sci, Bareilly, Uttar Pradesh, India

[2] Sardar Vallabh Bhai Patel Univ Agr & Technol, Coll Biotechnol, Meerut 250110, Uttar Pradesh, India

来源：

VEGETOS | 2012年 / 25卷 / 02期

关键词：

Abscisic acid; calcium; nitrate reductase; Populus deltoids; MAIZE SEEDLINGS; NITROGEN; PROTEIN; ASSIMILATION; CALCIUM; ENZYME; GERMINATION; INHIBITION; COTYLEDONS; CYTOKININ;

D O I：

暂无

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Excised leaves from Populus deltoids incubated in half strength Hoagland's solution containing 10mM KNO3 as nitrogen source and 25 to 100 mu M Abscisic acid for 24hr. Nitrate reductase activity were increased at lower concentration (25 mu M) of ABA. Different concentrations of calcium (0.1, 0.5 and 1.0mM) with 25 mu M ABA inhibits the NR activity at lower to higher (0.1 to 1.0mM) concentrations of calcium. Different concentrations of calcium chelator EDTA (0.1 to 1.0mM) and calcium blocker LaCl3 (1.0 to 10.0mM) along with calcium (1.0mM) also decreases NR activity. EDTA specially reduce the availability of extracellular Ca2+ ions and ABA increased the inhibitory effect of LaCl3.

引用

页码：57 / 61

页数：5

共 29 条

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