ArticleThe Plant cell2011
A monogalactosyldiacylglycerol synthase found in the green sulfur bacterium Chlorobaculum tepidum reveals important roles for galactolipids in photosynthesis.
Article in The Plant cell, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 24 citations in OpenAlex.
- Unusual Genomic and Biochemical Features ofInternational journal of molecular sciences · 2024Article
- Glyceroglycolipid Metabolism Regulations under Phosphate Starvation Revealed by Transcriptome Analysis inMarine drugs · 2020Article
- Biosynthesis of unnatural glycolipids possessing diyne moiety in the acyl chain in the green sulfur photosynthetic bacteriumBiochemistry and biophysics reports · 2017Article
- Role of membrane glycerolipids in photosynthesis, thylakoid biogenesis and chloroplast development.Journal of plant research · 2016Review
- Label Distribution in Tissues of Wheat Seedlings Cultivated with Tritium-Labeled Leonardite Humic Acid.Scientific reports · 2016Article
- Transcriptional regulation of thylakoid galactolipid biosynthesis coordinated with chlorophyll biosynthesis during the development of chloroplasts in Arabidopsis.Frontiers in plant science · 2014Article
- A variety of glycolipids in green photosynthetic bacteria.Photosynthesis research · 2013Article
- Specific gene bciD for C7-methyl oxidation in bacteriochlorophyll e biosynthesis of brown-colored green sulfur bacteria.PloS one · 2013Article
- Chlorobaculum tepidum TLS displays a complex transcriptional response to sulfide addition.Journal of bacteriology · 2013Article
- Phylogeny of galactolipid synthase homologs together with their enzymatic analyses revealed a possible origin and divergence time for photosynthetic membrane biogenesis.DNA research : an international journal for rapid publication of reports on genes and genomes · 2012Article
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Authors and funding
18 authors at 7 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Monogalactosyldiacylglycerol (MGDG), which is conserved in almost all photosynthetic organisms, is the most abundant natural polar lipid on Earth. In plants, MGDG is highly accumulated in the chloroplast membranes and is an important bulk constituent of thylakoid membranes. However, precise functions of MGDG in photosynthesis have not been well understood. Here, we report a novel MGDG synthase from the green sulfur bacterium Chlorobaculum tepidum. This enzyme, MgdA, catalyzes MGDG synthesis using UDP-Gal as a substrate. The gene encoding MgdA was essential for this bacterium; only heterozygous mgdA mutants could be isolated. An mgdA knockdown mutation affected in vivo assembly of bacteriochlorophyll c aggregates, suggesting the involvement of MGDG in the construction of the light-harvesting complex called chlorosome. These results indicate that MGDG biosynthesis has been independently established in each photosynthetic organism to perform photosynthesis under different environmental conditions. We complemented an Arabidopsis thaliana MGDG synthase mutant by heterologous expression of MgdA. The complemented plants showed almost normal levels of MGDG, although they also had abnormal morphological phenotypes, including reduced chlorophyll content, no apical dominance in shoot growth, atypical flower development, and infertility. These observations provide new insights regarding the importance of regulated MGDG synthesis in the physiology of higher plants.
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