ArticlePlant physiology2014
Leaf oil body functions as a subcellular factory for the production of a phytoalexin in Arabidopsis.
Article in Plant physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.
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62 citing papers in PubMed, 129 citations in OpenAlex.
- Lipid droplet proteome plasticity in plant evolution, growth and development, and response to stress.Journal of experimental botany · 2026Review
- Analysis of Metabolic Differences and Core Regulatory Pathways in Lactic Acid Bacteria-Fermented Broths of DifferentFoods (Basel, Switzerland) · 2026Article
- Plant Lipid Droplets and Derived Lipidic Nano-Assemblies: Structure, Biogenesis and Pharmaceutical Applications.Plant biotechnology journal · 2026Review
- Integrated genome-wide association study (GWAS) and metabolomics identify genetic and metabolic drivers of stripe rust resistance in wheat from the Western Himalayas.Functional & integrative genomics · 2026Article
- Arabidopsis root lipid droplets are hubs for membrane homeostasis under heat stress, and triterpenoid synthesis and storage.The New phytologist · 2026Article
- Lipid droplets at the interface of plant defense and pathogen exploitation.Frontiers in plant science · 2026Review
- Rice Peroxygenase-9 Negatively Regulates Production of Reactive Oxygen Species and Increases Cellular Resistance to Abiotic Stress.International journal of molecular sciences · 2025Article
- LIPID RICH 1 modulates allocation of carbon between starch and triacylglycerol in Arabidopsis leaves.Journal of experimental botany · 2025Article
- Powdery mildew induces chloroplast storage lipid formation at the expense of host thylakoids to promote spore production.The Plant cell · 2025Article
- Plasticity of the Arabidopsis leaf lipidome and proteome in response to pathogen infection and heat stress.Plant physiology · 2025Article
- Lipid droplets in plants: turnover and stress responses.Frontiers in plant science · 2025Review
- Development of phytochemical genomics: From decoding metabolome to functional genomics and biotechnology of plant metabolism.Proceedings of the Japan Academy. Series B, Physical and biological sciences · 2025Review
- Exploiting lipid droplet metabolic pathway to foster lipid production: oleosin in focus.Plant cell reports · 2024Review
- Hypoxia increases triacylglycerol levels and unsaturation in tomato roots.BMC plant biology · 2024Article
- Lipid Droplets in EndosymbioticPlants (Basel, Switzerland) · 2024Review
- Lipid droplets inFrontiers in plant science · 2024Article
- Metabolite profiling of susceptible and resistant wheat (Triticum aestivum) cultivars responding to Puccinia striiformis f. sp. tritici infection.BMC plant biology · 2023Article
- Lipid Droplets from Plants and Microalgae: Characteristics, Extractions, and Applications.Biology · 2023Review
- Caleosin/peroxygenases: multifunctional proteins in plants.Annals of botany · 2023Review
- Characterization of Oil Body and Starch Granule Dynamics in Developing Seeds ofInternational journal of molecular sciences · 2023Article
2 more citing papers are in PubMed but not listed here.
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Authors and funding
11 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Oil bodies are intracellular structures present in the seed and leaf cells of many land plants. Seed oil bodies are known to function as storage compartments for lipids. However, the physiological function of leaf oil bodies is unknown. Here, we show that leaf oil bodies function as subcellular factories for the production of a stable phytoalexin in response to fungal infection and senescence. Proteomic analysis of oil bodies prepared from Arabidopsis (Arabidopsis thaliana) leaves identified caleosin (CLO3) and α-dioxygenase (α-DOX1). Both CLO3 and α-DOX1 were localized on the surface of oil bodies. Infection with the pathogenic fungus Colletotrichum higginsianum promoted the formation of CLO3- and α-DOX1-positive oil bodies in perilesional areas surrounding the site of infection. α-DOX1 catalyzes the reaction from α-linolenic acid (a major fatty acid component of oil bodies) to an unstable compound, 2-hydroperoxy-octadecatrienoic acid (2-HPOT). Intriguingly, a combination of α-DOX1 and CLO3 produced a stable compound, 2-hydroxy-octadecatrienoic acid (2-HOT), from α-linolenic acid. This suggests that the colocalization of α-DOX1 and CLO3 on oil bodies might prevent the degradation of unstable 2-HPOT by efficiently converting 2-HPOT into the stable compound 2-HOT. We found that 2-HOT had antifungal activity against members of the genus Colletotrichum and that infection with C. higginsianum induced 2-HOT production. These results defined 2-HOT as an Arabidopsis phytoalexin. This study provides, to our knowledge, the first evidence that leaf oil bodies produce a phytoalexin under a pathological condition, which suggests a new mechanism of plant defense.
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