The DOI matches its Crossref record; 22 of the 22 references it cites were found in a registry or an index.
Galactolipid synthesis in chloroplast inner envelope is essential for proper thylakoid biogenesis, photosynthesis, and embryogenesis
Open accessAbstract
The biogenesis of thylakoid membranes, an indispensable event for the photoautotrophic growth of plants, requires a significant increase in the level of the unique thylakoid membrane lipid monogalactosyldiacylglycerol (MGDG), which constitutes the bulk of membrane lipids in chloroplasts. The final step in MGDG biosynthesis occurs in the plastid envelope and is catalyzed by MGDG synthase. Here we report the identification and characterization of an Arabidopsis mutant showing a complete defect in MGDG synthase 1. The mutant seeds germinated as small albinos only in the presence of sucrose. The seedlings lacked galactolipids and had disrupted photosynthetic membranes, leading to the complete impairment of photosynthetic ability and photoautotrophic growth. Moreover, invagination of the inner envelope, which is not seen in mature WT chloroplasts, was observed in the mutant, supporting an old hypothesis that envelope invagination is a major event in early chloroplast biogenesis. In addition to the defective seedling phenotype, embryo development was arrested in the mutant, although seeds with impaired embryos could germinate heterotrophically. These results demonstrate the importance of galactolipids not only in photosynthetic growth but also in embryogenesis.
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Cites
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Galactolipids rule in seed plants
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Self-citationVIPP1 , a nuclear gene of Arabidopsis thaliana essential for thylakoid membrane formation
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Cited by
Fatty Acid– and Lipid-Mediated Signaling in Plant Defense
Lim, G.-H., Singhal, R., Kachroo, A., & Kachroo, P. (2017) · Annual Review of Phytopathology · doi:10.1146/annurev-phyto-080516-035406 · Cited by 448
Configuration of the sugar head of glycolipids in thylakoid membranes
Apdila, E. T., & Awai, K. (2017) · Genes & Genetic Systems · doi:10.1266/ggs.17-00047 · Cited by 13
Metadata
- Authors
- Kobayashi, K., Kondo, M., Fukuda, H., Nishimura, M., & Ohta, H.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2007-10-23
- Volume
- 104
- Issue
- 43
- Pages
- 17216-17221
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2009326225
- Cited by
- 302
- References
- 22
- FWCI
- 7.18
- Type
- journal article
- Language
- en
- Open access
- green
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- Kobayashi, K., Kondo, M., Fukuda, H., Nishimura, M., & Ohta, H. (2007). Galactolipid synthesis in chloroplast inner envelope is essential for proper thylakoid biogenesis, photosynthesis, and embryogenesis. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0704680104
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