Octadecanoid Pathway (Oryza sativa)

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1-4PlastidCytosolPeroxisome13-HPODLipaseslinoleic acid12, 13-EOTOPC-8:0(beta-oxidation)X3H2OHydroperoxide lyaseDivinyl ether PUFAsAllene oxide cyclasejasmonate:amino acid transferase12-OPDAepoxy hydroxy PUFAsPeroxygenaseL-Isoleucinealpha-linolenic acidOPDA-reductase 3HexanalDivinyl ether synthase13-HPOT9-HPODmembrane lipids9-HPOTLipoxygenaseAllene oxide synthaseJasmonic Acid12-OPDAJasmonic Acid-IsoleucineJasmonic Acid


Plant oxylipins are a diverse class of lipid metabolites that are derived from the oxidation of unsaturated fatty acids. Oxylipins formed in plants include fatty acid hydroperoxides, hydroxy-, oxo-, or keto-fatty acids, divinyl ethers, volatile aldehydes, or the plant hormone Jasmonic Acid (JA).


Alias: Oxylipin pathway

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  1. E. Wassim Chehab, John V. Perea, Banu Gopalan, Steve Theg, Katayoon Dehesh; ''Oxylipin Pathway in Rice and Arabidopsis''; Journal of Integrative Plant Biology; Volume 49 Issue 1, Pages 43 - 51, 2007
  2. Agrawal GK, Tamogami S, Han O, Iwahashi H, Rakwal R; ''Rice octadecanoid pathway.''; Biochem Biophys Res Commun, 2004 PubMed
  3. Mei C, Qi M, Sheng G, Yang Y; ''Inducible overexpression of a rice allene oxide synthase gene increases the endogenous jasmonic acid level, PR gene expression, and host resistance to fungal infection.''; Mol Plant Microbe Interact, 2006 PubMed
  4. Mosblech A, Feussner I, Heilmann I; ''Oxylipins: Structurally diverse metabolites from fatty acid oxidation.''; Plant Physiol Biochem, 2008 PubMed


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87995view13:25, 25 July 2016ElisaOntology Term : 'classic metabolic pathway' added !
87993view13:25, 25 July 2016ElisaOntology Term : 'lipid metabolic pathway' added !
73842view00:21, 26 February 2014MaintBotupdating schema
71968view00:10, 24 October 2013MaintBotremoved data source from nodes without identifier
71863view21:09, 18 October 2013EgonwAdded a bunch of missing metabolite identifiers.
41513view01:50, 2 March 2011MaintBotRemoved redundant pathway information and comments
33401view14:47, 30 November 2009MaintBotRemoved group label
32764view23:43, 3 September 2009MaintBotModified categories
29040view12:27, 27 March 2009MaintBot
28681view00:47, 24 February 2009PjaiswalModified description
28680view00:45, 24 February 2009Pjaiswaladded refs
28679view00:39, 24 February 2009PjaiswalModified description
28678view00:38, 24 February 2009Pjaiswaladded various components
28677view00:32, 24 February 2009PjaiswalPeriodical save, work in progress
28676view00:21, 24 February 2009PjaiswalPeriodical save, work in progress
28675view00:11, 24 February 2009PjaiswalPeriodical save, work in progress
28674view00:01, 24 February 2009PjaiswalPeriodical save, work in progress
28673view23:51, 23 February 2009PjaiswalPeriodical save, work in progress
28672view23:40, 23 February 2009PjaiswalPeriodical save, work in progress
28671view23:30, 23 February 2009PjaiswalPeriodical save, work in progress
28670view23:20, 23 February 2009PjaiswalPeriodical save, work in progress
28669view23:10, 23 February 2009PjaiswalPeriodical save, work in progress
28662view00:25, 21 February 2009Pjaiswaladded new pathway
28661view00:15, 21 February 2009PjaiswalPeriodical save, work in progress
28660view00:05, 21 February 2009PjaiswalNew pathway

External references


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NameTypeDatabase referenceComment
(beta-oxidation)X3GeneProductThree beta-oxidation steps
12, 13-EOTMetabolite20843328 (PubChem-compound) Also called as (9Z,15Z)-(13S)-12,13-epoxyoctadeca-9,11,15-trienoate
12-OPDAMetabolite5280411 (PubChem-compound) 12-oxo phytodienoic acid (12-OPDA)
13-HPODMetabolite5280720 (PubChem-compound) Also called (9Z,11E)-(13S)-13-hydroperoxyoctadeca-9,11-dienoate , 13(S)-hydroperoxyoctadeca-9,11-dienoate
13-HPOTMetabolite25244639 (PubChem-compound) Also called as (9Z,11E,15Z)-(13S)-hydroperoxyoctadeca-9,11,15-trienoate
9-HPODMetabolite25244877 (PubChem-compound) also called 9(S)-hydroperoxy-10(E),12(Z)-octadecadienoic acid
9-HPOTMetabolite25244268 (PubChem-compound) Also called 9(S)-hydroperoxy-10(E),12(Z),15(Z)-octadecatrienoic acid
Allene oxide cyclaseGeneProductAllene oxide cyclase (AOC)
Allene oxide synthaseGeneProductAllene oxide synthase (AOS / CYP74A1/ EC is a member of the cytochrome P450 subfamily 74 (CYP74) of P450 enzymes. It plays an important role in oxylipin metabolism and signalling in plant defence.
Divinyl ether PUFAsMetabolite
Divinyl ether synthaseGeneProductDivinyl ether synthase (DES) catalyzes the conversion of fatty acid hydroperoxides into divinyl ether fatty acids. It is localized in the cytoplasm.
H2OMetaboliteCHEBI:15377 (ChEBI) H2O
HexanalMetabolite6184 (PubChem-compound)
Hydroperoxide lyaseGeneProductHydroperoxide lyase (HPL)
Jasmonic Acid-IsoleucineMetaboliteJA-Ile
Jasmonic AcidMetabolite6894-38-8 (CAS)
L-IsoleucineMetabolite73-32-5 (CAS)
OPC-8:0Metabolite25190962 (PubChem-compound) 3-oxo-2-(2-pentenyl)-cyclo-pentane-1-octanoic acid (OPC-8:0)
OPDA-reductase 3GeneProductOPDA-reductase 3 (OPR3) reduces 12-OPDA into 3-oxo-2-(2-pentenyl)-cyclo-pentane-1-octanoic acid (OPC-8:0), which is transformed to JA by three rounds of β-oxidation
PeroxygenaseGeneProductPeroxygenase (POX)
alpha-linolenic acidMetabolite463-40-1 (CAS)
epoxy hydroxy PUFAsMetabolite
jasmonate:amino acid transferaseGeneProductConjugates Ile to JA
linoleic acidMetabolite60-33-3 (CAS)
membrane lipidsMetabolite

Annotated Interactions

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