中文摘要：

阿拉伯半乳糖蛋白（arabinogalactan proteins，AGPs）是一类富含羟脯氨酸／脯氨酸的高度糖基化的蛋白分子，在高等植物的细胞壁、质膜和胞外基质中广泛存在。AGPs是一类重要的糖蛋白，它在被子植物营养生长和生殖发育的各个环节都可能发挥作用，涉及体细胞胚胎发生、细胞增殖、细胞膨大、细胞程序性死亡、损伤防御、根形态建成、花粉管生长以及植物激素信号传导等。植物结构基因组学及功能基因组学的快速发展，使得人们对AGPs的表达模式和功能特点有了更深入的认识。本文首先就AGPs的分子结构和分类，然后重点就利用基因组序列信息分析以及正、反向遗传学等手段进行的AGPs在植物营养生长、生殖发育、细胞程序性死亡，以及分子互作和信号传导等方面的作用的研究进行了综述。

英文摘要：

Arabinogalactan-proteins （AGPs） are oxyproline/hydroxyproline-rich （Hyp-rich） proteins which are highly glycosylated, present at the cell wall, plasma membrane and extracellular matrix （ECM） throughout the plant kingdom. AGPs are considered to be an important family of glycosidoproteins, implicated in diverse vegetative and reproductive processes, including somatic embryogenesis, cell expansion, programmed cell death, wound responses, root morphology, pollen tube growth, and plant hormonal signaling pathways. With the rapid development of plant structural genomics and functional genomics, we have known expression patterns and functions of AGPs at closer range. This paper first summarizes the molecular structure and classification of AGPs, then focuses on its functional research on vegetative growth, reproductive development, programmed cell death, and molecular interaction as well as signal transduction, using genomic sequence information analysis, forward and/or reverse genetic approach.