Cooperation and functional diversification of two closely related galactolipase genes for jasmonate biosynthesis = Jasmonic acid생합성에 관련된 두가지 유사 Galactolipase유전자들의 협동과 기능적 다양성

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Title
Cooperation and functional diversification of two closely related galactolipase genes for jasmonate biosynthesis = Jasmonic acid생합성에 관련된 두가지 유사 Galactolipase유전자들의 협동과 기능적 다양성
Author(s)
Y Hyun; S Choi; H J Hwang; J Yu; S J Nam; J Ko; J Y Park; Y S Seo; E Y Kim; Stephen Beungtae Ryu; W T Kim; Y H Lee; H Kang; I Lee
Bibliographic Citation
Developmental Cell, vol. 14, no. 2, pp. 183-192
Publication Year
2008
Abstract
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 DEHISCENCE1 (DAD1), encodes a chloroplast-targeted lipase with strong galactolipase and weak phospholipase A1 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.
Keyword
SIGNALING
ISSN
1534-5807
Publisher
Elsevier-Cell Press
DOI
http://dx.doi.org/10.1016/j.devcel.2007.11.010
Type
Article
Appears in Collections:
Division of Biomaterials Research > Plant Systems Engineering Research > 1. Journal Articles
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