| 小麦根细胞质膜氧化还原系统对干旱胁迫反应与K+累积的关系 |
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| 引用本文： | 曹翠玲,高俊凤,曹 薇. 小麦根细胞质膜氧化还原系统对干旱胁迫反应与K+累积的关系[J]. 西北农林科技大学学报(自然科学版), 1996, 24(3): 25-29 |
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| 作者姓名： | 曹翠玲 高俊凤 曹 薇 |
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| 作者单位： | 西北农业大学基础科学系 |
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| 基金项目： | 农业部“八五”应用基础研究资助项目 |
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| 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，但能促进陕合６号小麦根的Ｈ＋分泌和Ｋ＋累积
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| 关 键 词： | 小麦 氧化还原系统 干旱胁迫 K＋累积 |
The Responses of Wheat Root Plasma Membrance Redox System to Water Stress and its Relationship to K+ Accumulation |
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| Cao Cuiling Gao Junfeng Cao Wei. The Responses of Wheat Root Plasma Membrance Redox System to Water Stress and its Relationship to K+ Accumulation[J]. Journal of Northwest A&F University（Natural Science Edition）, 1996, 24(3): 25-29 |
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| Authors: | Cao Cuiling Gao Junfeng Cao Wei |
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| Affiliation: | Cao Cuiling Gao Junfeng Cao Wei ( Department of Basic Science,Northwestern Agricultural University,Yangling,Shaanxi,712100) |
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| Abstract: | Marked activity of NADH-ferricyanide oxidoreductase has been found inplasma membrance from wheat roots.KCN,SHAM and Na3Vo4 have no influence on theactivities of this redox system,but 10Lmol/L DCCD inhibits the activity of this systemslightly.The NADH-ferricyanide activity of two winter wheat cultivars with differentdrought resistance shows similar changing trends under water stress.The activity offerricyanide reductase is declined under the water stress.But,accompanying ferricyanidereductase activity exists an apparent excretion of H+ and a stimulation of K+ influx. |
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| Keywords: | wheat oxidoreductase system water stress |
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