Roles of the acidic lipids sulfoquinovosyl diacylglycerol and phosphatidylglycerol in photosynthesis: their specificity and evolution

@article{Sato2004RolesOT,
  title={Roles of the acidic lipids sulfoquinovosyl diacylglycerol and phosphatidylglycerol in photosynthesis: their specificity and evolution},
  author={Norihiro Sato},
  journal={Journal of Plant Research},
  year={2004},
  volume={117},
  pages={495-505}
}
  • N. Sato
  • Published 2004
  • Biology, Medicine
  • Journal of Plant Research
Sulfoquinovosyl diacylglycerol (SQDG) and phosphatidylglycerol (PG) are lipids with negative charges, distributed among membranes of chloroplasts of plants and their postulated progenitors, cyanobacteria, and also widely among membranes of anoxygenic photosynthetic bacteria. Thus, these acidic lipids are of great interest in terms of their roles in the function and evolution of the photosynthetic membranes. The physiological significance of these lipids in photosynthesis has been examined… Expand
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Involvement of sulfoquinovosyl diacylglycerol in DNA synthesis in Synechocystis sp. PCC 6803
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TLDR
An acylated derivative of sulfolipid, 2′-O-acyl-sulfoquinovosyldiacylglycerol (ASQD), is described, suggesting a role for SQDG and/or ASQD in photosynthesis as conducted by C. reinhardtii, particularly under phosphate-limited conditions. Expand
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TLDR
It is demonstrated that PG contributes to the synthesis and/or stability of the PSI complex for maintenance of the cellular content of chlorophyll, and also to construction of thePSI trimer from the monomer at least through stabilization of the trimerized conformation. Expand
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  • Biology, Medicine
  • The Plant journal : for cell and molecular biology
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The total content of anionic thylakoid lipids is limiting for chloroplast structure and function, and is critical for overall photoautotrophic growth and plant development. Expand
Requirement of phosphatidylglycerol for photosynthetic function in thylakoid membranes.
TLDR
It is indicated that PG contributes to the accumulation of chlorophyll-protein complexes in thylakoid membranes, and also to normal functioning of PSII. Expand
The sulfolipid sulfoquinovosyldiacylglycerol is not required for photosynthetic electron transport in Rhodobacter sphaeroides but enhances growth under phosphate limitation.
TLDR
It is concluded that sulfolipid plays no significant unique role in photoheterotrophic growth or photosynthetic electron transport in R. sphaeroides but may function as a surrogate for phospholipids, particularly phosphatidylglycerol, under phosphate-limiting conditions. Expand
Requirement of Phosphatidylglycerol for Maintenance of Photosynthetic Machinery1
TLDR
It was found that instead of the synthesis of the D1 protein, the dimerization of the PSII core monomers was impaired in the PG-deprived mutant cells, suggesting that PG plays an important role in the maintenance of the photosynthetic machinery through theDimerization and reactivation of thePSII core complex. Expand
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TLDR
The results suggest that the role of SQDG is the conservation of the PSII properties in PCC6803, consistent with the results obtained with C. reinhardtii. Expand
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It is demonstrated that PGP1 plays a major role in the biosynthesis of phosphatidylglycerol in chloroplasts, and that phosphatidell cells with chloroplast particles are only found around vascular structures, whereas epidermal cells are enlarged but largely conserved. Expand
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TLDR
These results suggest that the function of Q(B) plastoquinone was inactivated by the PG deprivation, and it is assumed that PG is an indispensable component of the photosystem II reaction center complex to maintain the structural integrity of the Q( B)-binding site. Expand
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TLDR
The results suggest that SQDG is indispensable for PSII activity in Chlamydomonas by maintaining PSII complexes in their proper state. Expand
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