沙棘维生素C积累与相关酶活性关系研究  

Study on the Relationship of Vitamin C Accumulation and Related Enzyme Activity in Seabuckthorn

作　　者：耿贵工[1] 

机构地区：[1]青海省农林科学院农业部农产品质量安全风险评估实验室,西宁810016

出　　处：《湖北农业科学》2016年第1期120-123,共4页Hubei Agricultural Sciences

基　　金：国家特色农产品质量安全风险评估项目(GJFP2014010)

摘　　要：探讨沙棘(Hippophae rhamnoides Linn.)不同器官中抗坏血酸(As A)积累与相关代谢酶活性的关系。结果表明,As A在沙棘幼叶和果实中含量较高,在茎和花中含量较低。沙棘幼叶和果实中As A含量主要受L-半乳糖-1,4-内酯脱氢酶(Gal LDH)和脱氢抗坏血酸还原酶(DHAR)活性调节,抗坏血酸氧化酶(AAO)和抗坏血酸过氧化物酶(APX)对As A的积累也有调节作用。The relationship of vitamin C accumulation and related enzyme activity in seabuckthorn was studied. The results showed that the AsA content was superior in young leaves and fruit of seabuckthorn, and lower in stem and flower. The AsA content in young leaves and fruit of seabuckthorn was primarily regulated by GalLDH and DHAR activity and also regu- lated by AAO and APX activity.

关 键 词：沙棘(Hippophae rhamnoides Linn.) 抗坏血酸(AsA) L-半乳糖-1 4-内酯脱氢酶(GalLDH) 抗坏血酸氧化酶(AAO) 抗坏血酸过氧化物酶(APX) 单脱氢抗坏血酸还原酶(MDHAR) 脱氢抗坏血酸还原酶(DHAR) 

分 类 号：S793.6[农业科学—林木遗传育种]