ArticleThe Plant cell2006
Plastoglobules are lipoprotein subcompartments of the chloroplast that are permanently coupled to thylakoid membranes and contain biosynthetic enzymes.
Article in The Plant cell, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 179 papers.
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179 citing papers in PubMed, 454 citations in OpenAlex.
- Do Nectar Guides in Flowers of TwoPlants (Basel, Switzerland) · 2026Article
- A conserved sequence insert of fibrillins is involved in plastoglobule association and lipid binding.Plant & cell physiology · 2026Article
- Plastoglobules: A metabolic hub for nitrogen assimilation.Plant communications · 2026Article
- A plastoglobuli-localized enzyme links phenylalanine biosynthesis to translational homeostasis in maize.Nature communications · 2026Article
- Article
- Diel remodeling and cellular integration of the nitroplast.bioRxiv : the preprint server for biology · 2026Article
- Carotenoid aggregates negatively impact chlorophyll levels and disrupt chloroplast development in peaches.Molecular horticulture · 2026Article
- What are grana in chloroplasts of vascular plants good for?Annals of botany · 2026Review
- Effect of the Cytokinin Type in the Culture Medium on the Ultrastructure of Leaf Chloroplasts and Photosynthetic Pigment Content of In Vitro Apple (Plants (Basel, Switzerland) · 2026Article
- Plant plastids: from evolutionary origins to functional specialization and organelle interactions.Journal of experimental botany · 2025Review
- Preparation and Negative Staining for Visualization of Cyanoglobule Lipid Droplets Using Transmission Electron Microscopy.Bio-protocol · 2025Article
- Thylakostasis: key factors in thylakoid membrane organization with emphasis on biogenesis and remodeling proteins in vascular plants.Plant & cell physiology · 2025Review
- Stromules: An Incident or Formalized Pathway for Molecules Transfer Between Organelles?International journal of molecular sciences · 2025Review
- Article
- Cyanoglobule lipid droplets are a stress-responsive metabolic compartment of cyanobacteria and the progenitor of plant plastoglobules.The Plant cell · 2025Article
- Age-Specific Physiological Adjustments ofPlants (Basel, Switzerland) · 2025Article
- Comparative physiological and cytological analysis, and omics approach provide clues to the coloring mechanism of the pumpkin yellow stems.BMC plant biology · 2025Article
- Vitamin E in Plants: Biosynthesis Pathways, Biofortification Strategies, and Regulatory Dynamics.International journal of molecular sciences · 2025Review
- Efficacy of green synthesized titanium dioxide nanoparticles in attenuation salt stress in Glycine max plants: modulations in metabolic constituents and cell ultrastructure.BMC plant biology · 2025Article
- Proteome and Metabolome Analyses of Albino Bracts inPlants (Basel, Switzerland) · 2025Article
119 more citing papers are in PubMed but not listed here.
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plastoglobules are lipoprotein particles inside chloroplasts. Their numbers have been shown to increase during the upregulation of plastid lipid metabolism in response to oxidative stress and during senescence. In this study, we used state-of-the-art high-pressure freezing/freeze-substitution methods combined with electron tomography as well as freeze-etch electron microscopy to characterize the structure and spatial relationship of plastoglobules to thylakoid membranes in developing, mature, and senescing chloroplasts. We demonstrate that plastoglobules are attached to thylakoids through a half-lipid bilayer that surrounds the globule contents and is continuous with the stroma-side leaflet of the thylakoid membrane. During oxidative stress and senescence, plastoglobules form linkage groups that are attached to each other and remain continuous with the thylakoid membrane by extensions of the half-lipid bilayer. Using three-dimensional tomography combined with immunolabeling techniques, we show that the plastoglobules contain the enzyme tocopherol cyclase (VTE1) and that this enzyme extends across the surface monolayer into the interior of the plastoglobules. These findings demonstrate that plastoglobules function as both lipid biosynthesis and storage subcompartments of thylakoid membranes. The permanent structural coupling between plastoglobules and thylakoid membranes suggests that the lipid molecules contained in the plastoglobule cores (carotenoids, plastoquinone, and tocopherol [vitamin E]) are in a dynamic equilibrium with those located in the thylakoid membranes.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.