Effect of plant growth regulators and different nitrogen sources on NADP-isocitrate dehydrogenase activity of radish cotyledons

被引：5
|
作者：
Sood, CR [1 ]
Chanda, SV [1 ]
Singh, YD [1 ]
机构：
[1] Saurashtra Univ, Dept Biosci, Rajkot 360005, Gujarat, India
来源：
ACTA PHYSIOLOGIAE PLANTARUM | 1998年 / 20卷 / 04期
关键词：
Raphanus sativus; isocitrate dehydrogenase; plant growth regulators; nitrogen sources;
D O I：
10.1007/s11738-998-0019-z
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
NADP-isocitrate dehydrogenase (NADP-ICDH) activity of radish (Raphanus sativus L.) seedlings pretreated with various plant growth regulators: KiN, GA, and ABA and different nitrogen sources viz. KNO3, NH4Cl and NH4NO3 in light and dark was investigated. ICDH activity was significantly higher in light than in dark; addition of different nitrogen sources reduced it to a greater extent in NO3 supplementation. Among hormonal treatment only KiN showed slight promotion with KNO3 and NH4NO3. On the other hand in light KNO3 and/or NH4NO3 promoted ICDH activity and among hormones, KiN significantly promoted the activity in KNO3 and NH4NO3 supplemented seedlings while ABA was effective in NH4CL. It is suggested that in non-photosynthetic tissues, NADP-ICDH provides both reductant and carbon skeleton for glutamate synthesis.
引用
收藏
页码：353 / 357
页数：5
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