Enzymes of the biosynthesis of octadecanoid-derived signalling molecules.

doi:10.1093/JEXBOT/52.354.11

Paper

Enzymes of the biosynthesis of octadecanoid-derived signalling molecules.

Published 2001 · F. Schaller

Journal of experimental botany

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345

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22

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Abstract

It is known that octadecanoids, i.e. jasmonic acid and related compounds are involved in plant defence reactions against (1) microbial pathogens, (2) herbivores and (3) damage by UV-B or UV-C light as well as (4) senescence and (5) mechanotransduction. Jasmonic acid is likely to occur ubiquitously in the plant kingdom, and it has also been found in some fungi. The pathway of octadecanoid biosynthesis was elucidated in the early 80s by Vick and Zimmerman. This review summarizes recent progress in the identification and characterization of octadecanoid biosynthetic enzymes and in the understanding of the regulation of octadecanoid biosynthesis.

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Study Snapshot

Recent progress in identifying and analyzing octadecanoid biosynthetic enzymes has improved our understanding of their regulation and their role in plant defense against pathogens, herbivores, and UV-B and UV-C damage.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Paper

Enzymes of the biosynthesis of octadecanoid-derived signalling molecules.

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References

A novel stress-inducible 12-oxophytodienoate reductase from Arabidopsis thaliana provides a potential link between Brassinosteroid-action and Jasmonic-acid synthesis

Brassinosteroids may influence plant stress responses by stimulating jasmonic acid synthesis through the stress-inducible OPR3 gene in Arabidopsis thaliana.

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Allene oxide cyclase is a homodimeric protein found in tomato, with its activity being influenced by additional amino acids, and its enzymatic function being influenced by wounding of tomato leaves.

Cytochrome P450-dependent metabolism of oxylipins in tomato. Cloning and expression of allene oxide synthase and fatty acid hydroperoxide lyase.

Tomato uses distinct genetic pathways to regulate wound-responsive genes, with LeAOS showing the strongest induction in response to insect damage.

12-Oxophytodienoate reductase 3 (OPR3) is the isoenzyme involved in jasmonate biosynthesis

OPR3 is the key enzyme in jasmonate biosynthesis, effectively converting natural (9S,13S)-12-oxophytodienoic acid to the corresponding 3-2(2′(Z)-pentenyl) cyclopentane-1-octanoic acid (

Expression of allene oxide synthase determines defense gene activation in tomato.

Allene oxide synthase (AOS) expression in tomato leaves determines defense gene activation, with salicylic acid inhibiting both AOS and PIN II expression.

Citations

The Octadecanoids: Synthesis and Bioactivity of 18-Carbon Oxygenated Fatty Acids in Mammals, Bacteria, and Fungi

Octadecanoids play a crucial role in mammalian biological processes, including inflammation, nociception, and cell proliferation, and may serve as biomarkers for health and disease.

Multitrophic and Multilevel Interactions Mediated by Volatile Organic Compounds

Plants communicate with insects using volatile organic compounds (VOCs), which can be harnessed for eco-friendly crop protection and enhancing crop resilience.

Transcriptomic Analysis Reveals the Mechanism of MtLOX24 in Response to Methyl Jasmonate Stress in Medicago truncatula

MtLOX24 plays a crucial role in Medicago truncatula's response to methyl jasmonate stress, affecting leaf wilting, yellowing, and oxidative damage.

SlWRKY81 regulates Spd synthesis and Na+ /K+ homeostasis through interaction with SlJAZ1 mediated JA pathway to improve tomato saline-alkali resistance.

SlWRKY81 enhances tomato saline-alkali stress resistance by regulating Spd synthesis and Na+/K+ homeostasis through interaction with SlJAZ1.

Drought responses and population differentiation of Calohypnum plumiforme inferred from comparative transcriptome analysis.

Under slow desiccation rates, Calohypnum plumiforme moss exhibits complex gene regulatory network changes, highlighting local adaptation and drought resistance.

SlWRKY80-mediated jasmonic acid pathway positively regulates tomato resistance to saline–alkali stress by enhancing spermidine content and stabilizing Na+/K+ homeostasis

Exogenous methyl jasmonate (MeJA) improves tomato resistance to saline-alkali stress by enhancing spermidine content and stabilizing Na+/K+ homeostasis through the activation of SlWRKY80.