Another JA/COI1-independent role of OPDA detected in tomato embryo development.
Jasmonates (JAs) are ubiquitously occurring signaling compounds in plants formed in response to biotic and abiotic stress as well as in development. (+)-7-iso-jasmonoyl isoleucine, the bioactive JA, is involved in most JA-dependent processes mediated by the F-box protein COI1 in a proteasome-dependent manner. However, there is an increasing number of examples, where the precursor of JA biosynthesis, cis-(+)-12-oxophytodienoic acid (OPDA) is active in a JA/COI1-independent manner. Here, we discuss those OPDA-dependent processes, thereby giving emphasis on tomato embryo development. Recent data on seed coat-generated OPDA and its role in embryo development is discussed based on biochemical and genetic evidences.
Department of Molecular Signal Processing; Leibniz Institute of Plant Biochemistry; Weinberg; Halle (Saale), Germany.
Claus
C
Wasternack
Stephan
S
Goetz
Anja
A
Hellwege
Susanne
S
Forner
Miroslav
M
Strnad
Bettina
B
Hause
D003517:Cyclopentanes / Q000378:metabolism*; D005231:Fatty Acids, Unsaturated / Q000378:metabolism*; D018506:Gene Expression Regulation, Plant; D007532:Isoleucine / Q000031:analogs & derivatives / Q000378:metabolism; D018551:Solanum lycopersicum / Q000196:embryology* / Q000235:genetics / Q000378:metabolism*; D008954:Models, Biological; D009154:Mutation / Q000235:genetics; D054883:Oxylipins / Q000378:metabolism*; D010940:Plant Proteins / Q000378:metabolism*; D012639:Seeds / Q000196:embryology* / Q000378:metabolism*; D015398:Signal Transduction
D003517:Cyclopentanes; D005231:Fatty Acids, Unsaturated; D054883:Oxylipins; D010940:Plant Proteins; C532883:jasmonoyl-isoleucine; D007532:Isoleucine; C025999:12-oxophytodienoic acid; C011006:jasmonic acid