The diacylglycerol forming pathways differ among floral organs of Petunia hybrida

被引：21

作者：

Nakamura, Yuki ^{[2
]}

Ohta, Hiroyuki ^{[1
,3
]}

机构：

[1] Tokyo Inst Technol, Ctr Biol Resources & Informat, Midori Ku, Yokohama, Kanagawa 2268501, Japan

[2] Tokyo Inst Technol, Grad Sch Biosci & Biotechnol, Midori Ku, Yokohama, Kanagawa 2268501, Japan

[3] Tokyo Inst Technol, Res Ctr Evolving Earth & Planets, Midori Ku, Yokohama, Kanagawa 2268501, Japan

来源：

FEBS LETTERS | 2007年 / 581卷 / 28期

基金：

日本学术振兴会;

关键词：

diacylglycerol; phospholipid; floral organs; phospholipase; Petunia hybrida;

D O I：

10.1016/j.febslet.2007.10.053

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The origin of diacylglycerol, a substrate for membrane lipid biosynthesis, is not fully understood. Here, we report that Petunia hybrida. oral organs contain large amounts of diacylglycerol. Our data suggest that in stamens and pistils diacylglycerol is supplied both from phosphatidylcholine by non-specific phospholipase C activity and de novo via the Kennedy pathway and phosphatidic acid phosphatase, whereas in petals the two-step pathway catalyzed by phospholipase D and phosphatidic acid phosphatase predominates. Therefore, the pathways that supply diacylglycerol differ among. oral reproductive organs, although large amounts of diacylglycerol are commonly accumulated in these organs. (c) 2007 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

引用

页码：5475 / 5479

页数：5

共 26 条

[1] The involvement of cytosolic lipases in converting phosphatidyl choline to substrate for galactolipid synthesis in the chloroplast envelope [J].