ArticleJournal of experimental botany2019
Plastoglobular protein 18 is involved in chloroplast function and thylakoid formation.
Article in Journal of experimental botany, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 29 citations in OpenAlex.
- A conserved sequence insert of fibrillins is involved in plastoglobule association and lipid binding.Plant & cell physiology · 2026Article
- Article
- Get the ball rolling: update and perspective on the role of chloroplast plastoglobule-associated proteins under abiotic stress.Journal of experimental botany · 2025Review
- Cyanoglobule lipid droplets are a stress-responsive metabolic compartment of cyanobacteria and the progenitor of plant plastoglobules.The Plant cell · 2025Article
- Water stress enhances triacylglycerol accumulation via different mechanisms in wild-type and transgenic high-leaf oil tobacco.Plant physiology · 2025Article
- Physiological and Structural Changes in Leaves ofPlants (Basel, Switzerland) · 2024Article
- Sensory plastid-associated PsbP DOMAIN-CONTAINING PROTEIN 3 triggers plant growth- and defense-related epigenetic responses.The Plant journal : for cell and molecular biology · 2023Article
- Biogenesis and Lipase-Mediated Mobilization of Lipid Droplets in Plants.Plants (Basel, Switzerland) · 2022Review
- Article
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plastoglobules are lipoprotein particles that are found in different types of plastids. They contain a very specific and specialized set of lipids and proteins. Plastoglobules are highly dynamic in size and shape, and are therefore thought to participate in adaptation processes during either abiotic or biotic stresses or transitions between developmental stages. They are suggested to function in thylakoid biogenesis, isoprenoid metabolism, and chlorophyll degradation. While several plastoglobular proteins contain identifiable domains, others provide no structural clues to their function. In this study, we investigate the role of plastoglobular protein 18 (PG18), which is conserved from cyanobacteria to higher plants. Analysis of a PG18 loss-of-function mutant in Arabidopsis thaliana demonstrated that PG18 plays an important role in thylakoid formation; the loss of PG18 results in impaired accumulation, assembly, and function of thylakoid membrane complexes. Interestingly, the mutant accumulated less chlorophyll and carotenoids, whereas xanthophyll cycle pigments were increased. Accumulation of photosynthetic complexes is similarly affected in both a Synechocystis and an Arabidopsis PG18 mutant. However, the ultrastructure of cyanobacterial thylakoids is not compromised by the lack of PG18, probably due to its less complex architecture.
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