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The Structure and Morphology of Red Algae Chloroplasts

  • Zenilda L. BouzonEmail author
  • Carmen Simioni
  • Eder C. Schmidt
Chapter
Part of the Advances in Photosynthesis and Respiration book series (AIPH, volume 39)

Summary

The morphological and structural aspects of red algae chloroplasts are described in this chapter. Structural and physiological features of the red algal chloroplast demonstrate the occurrence of an endosymbiotic event. Structural features of the red algal chloroplast include phycobilisomes, plastoglobuli, genophores, ribosomes, and pyrenoids in some species. The phycobilisomes are photosynthetic macromolecular aggregates of light-harvesting pigment-protein complexes attached to the stromal side of the thylakoid membrane. In the chloroplast stroma, electron-dense lipid droplets (plastoglobuli) are observed between the thylakoids, and in red algae, these structures are interpreted as lipid material. In chloroplasts, the stroma is filled with plastidial ribosomes and a fibrillar region corresponding to a genophore. Red algae can possess a large variety of colors, ranging from purple-red, pinkish-red, red, brown, yellowish to different gradations of green. These colors arise from a variety of photosynthetic pigments, predominantly chlorophyll a, with accessory pigments found in the phycobiliproteins (allophycocyanin, phycocyanin and phycoerythrin), as well as different carotenoids (violaxanthin, antheraxanthin, lutein, zeaxanthin, β-cryptoxanthin, α-carotene and β-carotene). Floridean starch is the main storage product synthesized in red algae. The floridean starch is stored in granules, which are localized in the cell cytoplasm – outside of the chloroplast.

Keywords

Kappaphycus Alvarezii Chloroplast Division Chloroplast Stroma Accessory Pigment Porphyridium Cruentum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbreviations:

EM

– Electron microscopy;

LM

– Light microscopy;

PAS

– Periodic acid-schiff;

PBS

– Phycobilisome

Notes

Acknowledgments

The authors would like to acknowledge the staff of the Central Laboratory of Electron Microscopy (LCME), Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil, for the use of their transmission electron and confocal microscopes. We appreciate the efforts of everyone contributing to the book.

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Copyright information

© Springer Science+Business Media B.V. 2014

Authors and Affiliations

  • Zenilda L. Bouzon
    • 1
    • 2
    Email author
  • Carmen Simioni
    • 3
  • Eder C. Schmidt
    • 4
  1. 1.Plant Cell Biology Laboratory, Department of Cell Biology, Embryology and GeneticsFederal University of Santa CatarinaFlorianópolisBrazil
  2. 2.Central Laboratory of Electron MicroscopyFederal University of Santa CatarinaFlorianópolisBrazil
  3. 3.Post-Graduate Program in Cell Biology and Development, Department of Cell Biology, Embryology and GeneticsFederal University of Santa CatarinaFlorianópolisBrazil
  4. 4.Postdoctoral Research of Postgraduate Program in Cell Biology and Development, Department of Cell Biology, Embryology and GeneticsFederal University of Santa CatarinaFlorianópolisBrazil

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