Alleviation of water and osmotic stress-induced changes in nitrogen metabolizing enzymes in Triticum aestivum L. cultivars by potassium

被引：70

作者：

Ahanger, Mohammad Abass ^{[1
]}

Tittal, Megha ^{[1
]}

Mir, Rayees Ahmad ^{[1
]}

Agarwal, R. M. ^{[1
]}

机构：

[1] Univ Gwalior, Sch Studies Bot Jiwaji, Gwalior, India

来源：

PROTOPLASMA | 2017年 / 254卷 / 05期

关键词：

Nitrogen metabolizing enzymes; Water and osmotic stress; Potassium; Triticum aestivum L; NITRATE REDUCTASE-ACTIVITY; RAPID MODULATION; ACID; DROUGHT; LEAVES; WHEAT; AMINOTRANSFERASE; BIOSYNTHESIS; INVOLVEMENT; SEEDLINGS;

D O I：

10.1007/s00709-017-1086-z

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Present communication reports laboratory and pot experiments conducted to study the influence of water and osmotic stress on nitrogen uptake and metabolism in two wheat (Triticum aestivum L) cultivars with and without potassium supplementation. Polyethylene glycol 6000-induced osmotic stress/restricted irrigation caused a considerable decline in the activity of nitrate reductase, glutamate synthase, alanine and aspartate aminotransferases, and glutamate dehydrogenase. Potassium considerably improved nitrogen metabolism under normal water supply conditions and also resulted in amelioration of the negative impact of water and osmotic stresses indicating that potassium supplementation can be used as a potential tool for enhancing the nitrogen use efficiency in wheat for exploiting its genetic potential.

引用

页码：1953 / 1963

页数：11

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