摘要
小麦根细胞质膜上存在ＮＡＤＨ－Ｋ３Ｆｅ（ＣＮ）６氧化还原酶。ＫＣＮ、ＳＨＡＭ及Ｎａ３ＶＯ４对其活性无影响，ＤＣＣＤ对其有轻微抑制作用。干旱胁迫下，抗旱性不同的两品种小麦根质膜ＮＡＤＨ－Ｋ３Ｆｅ（ＣＮ）６氧化还原酶变化趋势相似。小麦根存在跨膜Ｋ３Ｆｅ（ＣＮ）６还原系统。干旱胁迫下，Ｋ３Ｆｅ（ＣＮ）６还原活力下降。
Marked activity of NADH ferricyanide oxidoreductase has been found in plasma membrance from wheat roots.KCN,SHAM and Na 3Vo 4 have no influence on the activities of this redox system,but 10 μmol/L DCCD inhibits the activity of this system slightly.The NADH ferricyanide activity of two winter wheat cultivars with different drought resistance shows similar changing trends under water stress.The activity of ferricyanide reductase is declined under the water stress.But,accompanying ferricyanide reductase activity exists an apparent excretion of H + and a stimulation of K + influx.
出处
《西北农业大学学报》
CSCD
1996年第3期25-29,共5页
Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)
基金
农业部"八五"应用基础研究资助项目
