Cooperation and functional diversification of two closely related galactolipase genes for jasmonate biosynthesis

被引：134

作者：

Hyun, Youbong ^{[1
]}

Choi, Sungwook ^{[1
]}

Hwang, Hyun-Ju ^{[1
]}

Yu, Jihyeon ^{[1
]}

Nam, Sang-Jip ^{[2
]}

Ko, Jaeyoung ^{[2
]}

Park, Ju-Young ^{[3
]}

Seo, Young Sam ^{[4
]}

Kim, Eun Yu ^{[4
]}

Ryu, Stephen Beungtae ^{[5
]}

Kim, Woo Taek ^{[4
]}

Lee, Yong-Hwan ^{[3
]}

Kang, Heonjoong ^{[2
]}

Lee, Ilha ^{[1
,6
]}

机构：

[1] Seoul Natl Univ, Dept Biol Sci, Natl Res Lab Plant Dev Genet, Seoul 151742, South Korea

[2] Seoul Natl Univ, Sch Earth & Environm Sci, Seoul 151747, South Korea

[3] Seoul Natl Univ, Dept Agr Biotechnol, Seoul 151921, South Korea

[4] Yonsei Univ, Coll Sci, Dept Biol, Seoul 120749, South Korea

[5] Korea Res Inst Biosci & Biotechnol, Bioevaluat Ctr, Chungbuk 363, South Korea

[6] Seoul Natl Univ, Global Res Lab Flowering, Seoul 151742, South Korea

来源：

DEVELOPMENTAL CELL | 2008年 / 14卷 / 02期

关键词：

D O I：

10.1016/j.devcel.2007.11.010

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Jasmonic acid (JA) plays pivotal roles in diverse plant biological processes, including wound response. Chloroplast lipid hydrolysis is a critical step for JA biosynthesis, but the mechanism of this process remains elusive. We report here that DONGLE (DGL), a homolog of DEFECTIVE IN ANTHER DEHIS-CENCE1 (DAD1), encodes a chloroplast-targeted lipase with strong galactolipase and weak phospholipase A, activity. DGL is expressed in the leaves and has a specific role in maintaining basal JA content under normal conditions, and this expression regulates vegetative growth and is required for a rapid JA burst after wounding. During wounding, DGL and DAD1 have partially redundant functions for JA production, but they show different induction kinetics, indicating temporally separated roles: DGL plays a role in the early phase of JA production, and DAD1 plays a role in the late phase of JA production. Whereas DGL and DAD1 are necessary and sufficient for JA production, phospholipase D appears to modulate wound response by stimulating DGL and DAD1 expression.

引用

页码：183 / 192

页数：10

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