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. 1973 Apr;51(4):802–804. doi: 10.1104/pp.51.4.802

Differences in Lipid Composition between Undifferentiated and Mature Maize Chloroplasts

Raymond P Poincelot 1
PMCID: PMC366349  PMID: 16658413

Abstract

Lipid compositions of undifferentiated maize (Zea mays) chloroplasts, capable of fixing CO2, were compared with the lipid compositions of mature chloroplasts, which do not fix CO2, located in both the mesophyll and bundle sheath cells. The major lipids found in all three chloroplast types were the glycolipids, monogalactosyl diglyceride and digalactosyl diglyceride, followed by decreasing amounts of sulfolipid, phosphatidyl glycerol, phosphatidyl choline, phosphatidyl inositol, and diphosphatidyl glycerol. Quantitative differences in lipid components were observed among the chloroplast types. The mesophyll and bundle sheath maize chloroplasts differed in their chlorophyll a/chlorophyll b ratios (2.27 and 4.13 respectively) and their content of glycolipid relative to chlorophyll (51.8% glycolipid to 20.9% chlorophyll and 84.5% glycolipid to 10.1% chlorophyll respectively). A comparison between the lipid compositions of maize mesophyll chloroplasts and mesophyll chloroplasts obtained from spinach, sugar beet, and tobacco showed many similarities.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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