Evolution of plant cell wall: Arabinogalactan-proteins from three moss genera show structural differences compared to seed plants
Evolution of plant cell wall: Arabinogalactan-proteins from three moss genera show structural differences compared to seed plants
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DOI：
10.1016/j.carbpol.2017.01.043
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发表时间：
2017-05-01
影响因子：
11.2
通讯作者：
Classen, Birgit
中科院分区：
文献类型：
--
作者：
Bartels, Desiree;Baumann, Alexander;Classen, Birgit
阿拉伯半乳聚糖蛋白（AGPs）是植物细胞壁的重要蛋白多糖。它们似乎存在于大多数种子植物中，如果不是所有种子植物的话，但它们在brabetes中的发生和结构是广泛未知的，实际上是AGP研究的焦点。关于植物细胞壁的进化，我们从三种藓类植物泥炭藓中分离出AGPs，小立碗藓和美丽多鞭藻。苔藓类植物的AGP具有种子植物AGP的结构特征，但也具有独特的特征，特别是3-O-甲基-鼠李糖（俗名acofriose）作为被子植物阿拉伯半乳聚糖蛋白中未发现的末端单糖，以及1，2，3-连接的半乳糖作为阿拉伯半乳聚糖蛋白中从未发现的分支点。(C)2017爱思唯尔有限公司版权所有
Arabinogalactan-proteins (AGPs) are important proteoglycans of plant cell walls. They seem to be present in most, if not all seed plants, but their occurrence and structure in bryophytes is widely unknown and actually the focus of AGP research. With regard to evolution of plant cell wall, we isolated AGPs from the three mosses Sphagnum sp., Physcomitrella patens and Polytrichastrum formosum. The moss AGPs show structural characteristics common for AGPs of seed plants, but also unique features, especially 3-O-methyl-rhamnose (trivial name acofriose) as terminal monosaccharide not found in arabinogalactan-proteins of angiosperms and 1,2,3-linked galactose as branching point never found in arabinogalactan-proteins before. (C) 2017 Elsevier Ltd. All rights reserved.