番茄脂肪氧合酶与乙烯释放量的关系  

Lipoxygenase and Its Relation to Ethylene Production and Ripening of Tomato Fruits

作　　者：罗云波[1] 生吉萍[1] 李钰 夏红进 

机构地区：[1]中国农业大学食品学院

出　　处：《园艺学报》1999年第1期28-32,共5页Acta Horticulturae Sinica

基　　金：国家自然科学基金

摘　　要：不同成熟时期的番茄，其果皮和隔壁部位的乙烯释放量与脂肪氧合酶（ＬＯＸ）活性变化趋势一致；外施ＬＯＸ底物亚油酸、亚麻酸，可促进番茄组织的乙烯释放，而非ＬＯＸ底物的饱和脂肪酸对乙烯释放没有明显的促进作用；外施ＬＯＸ代谢产物茉莉酮酸、愈创木酸亦可促进乙烯释放，而ＬＯＸ抑制剂对乙烯释放有抑制作用。对ＬＯＸ及ＬＯＸ途径与番茄乙烯释放及衰老生理的关系做了讨论。The results of this article indicate that changes in ethylene production correlated with changes in LOX activity in pericarp and columella of tomato fruits(Lycoperiscon exculentu Mill cv.Caruso)at different stages after harvest. Application of LA and LNA,the substrates of LOX,results in increase of ethylene production,and the promoting capacity of fatty acid is only specific to substrates of LOX Promotion of ethylene production can also be observed after treating with JA and TA,the metabolites of LOX.While inhibitors of LOX,nPG and NDGA can inhibit ethylene production.LOX,LOX pathway and their relation to ethylene production and senescence of tomato fruits are also discussed.

关 键 词：番茄 脂肪氧合酶 酶活性 乙烯释放量 果实成熟衰老 

分 类 号：S641.201[农业科学—蔬菜学]