Abstract: The advance in mobilization of seed storage lipids was reviewed in this paper. There are different hydrolysis pathways of storage lipids in different seeds. It has now been proposed that there are three possible pathways for mobilization of storage lipids in seeds: direct lipase hydrolysis, acyl-CoA-diacylglycerol acyltransferase pathway, and lipoxygenase pathway. The first two pathways are independent of lipoxygenase. These 3 pathways might co-exist during the seed germination. However, there is no any knowledge about which of the 3 pathways is mainly responsible for, and about what is the differences of plants species in the storage lipid hydrolysis. Moreover, all of these 3 pathways have not been confirmed directly by genetic evidence.

Key words:

Seed germination

摘要： 对植物种子萌发过程中贮藏油脂动员的研究进展进行了综述。不同种子的贮藏油脂的降解途径不同。目前提出有3 条途径: 传统的脂酶直接水解途径; 新近发现的酰基-CoA-二酯酰甘油酰基转移酶途径和脂氧合酶(LOX) 途径。前两条途径不依赖于LOX。这3 条途径可能在贮藏油脂动员过程中是并存的,但目前尚不知道在种子萌发过程中油脂降解是以那一条降解途径为主, 以及不同的种之间是否存在差异。此外, 3 条降解途径目前都缺乏分子生物学的直接证据。

关键词: 种子萌发, 油脂动员, 水解途径FONT