Back to Search
Start Over
Cooperation and Functional Diversification of Two Closely Related Galactolipase Genes for Jasmonate Biosynthesis
- Source :
- Developmental Cell. 14:183-192
- Publication Year :
- 2008
- Publisher :
- Elsevier BV, 2008.
-
Abstract
- Summary 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 A 1 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.
- Subjects :
- Transcriptional Activation
Chloroplasts
Arabidopsis
Cyclopentanes
Biology
Genes, Plant
Phospholipases A
General Biochemistry, Genetics and Molecular Biology
chemistry.chemical_compound
Biosynthesis
Gene Expression Regulation, Plant
Galactolipase
Phospholipase D
Oxylipins
Jasmonate
Molecular Biology
Gene
Phospholipase A
Plant Stems
Arabidopsis Proteins
Jasmonic acid
Genetic Variation
Cell Biology
Phospholipases A1
Plant Leaves
Chloroplast
Phenotype
Biochemistry
chemistry
Organ Specificity
Seedlings
SIGNALING
Carboxylic Ester Hydrolases
Developmental Biology
Subjects
Details
- ISSN :
- 15345807
- Volume :
- 14
- Database :
- OpenAIRE
- Journal :
- Developmental Cell
- Accession number :
- edsair.doi.dedup.....5cf47ee4a88cb5944742c40e2ae4bc22
- Full Text :
- https://doi.org/10.1016/j.devcel.2007.11.010