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THE ULTRASTRUCTURE OF PORPHYRIDIUM CRUENTUM
Open accessAbstract
An electron microscopic examination of Porphyridium cruentum revealed the presence of mitochondria which had been reported absent in this aerobic organism. The chloroplast in this red alga was found to contain small granules (about 320 A) regularly arranged along the parallel chloroplast lamellae. The chloroplast granules differ in size and staining intensity from the ribosomes located in the cytoplasm. Two tubular elements are described. One type (450 to 550 A) is associated with the Golgi bodies. Another type (350 A), in the cell periphery, is believed to connect the endoplasmic reticulum and the cell membrane. Daughter nuclei were found to be positioned at opposite ends of the cell prior to commencement of cell division. Cytokinesis is accomplished by an annular median constriction causing the gradual separation of the chloroplast, pyrenoid, and other cell organelles, resulting in two equal daughter cells. No appreciable differences were observed between cells grown in high light (400 ft-c) and low light (40 ft-c). Structural differences between young and old cells were compared.
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Cited by
The phycobilisome, a light-harvesting complex responsive to environmental conditions
Grossman, A. R., Schaefer, M. R., Chiang, G. G., & Collier, J. L. (1993) · Microbiological Reviews · doi:10.1128/mr.57.3.725-749.1993 · Cited by 649
Sui, S.-F. (2021) · Annual Review of Biophysics · doi:10.1146/annurev-biophys-062920-063657 · Cited by 72
Metadata
- Authors
- Gantt, E., & Conti, S. F.
- Venue
- The Journal of Cell Biology
- Publisher
- Rockefeller University Press
- Published
- 1965-08-01
- Volume
- 26
- Issue
- 2
- Pages
- 365-381
- ISSN
- 0021-9525 (ISSN-L)
- 1540-8140
- OpenAlex
- W2100026621
- Cited by
- 195
- References
- 0
- FWCI
- 3.80
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: THE ULTRASTRUCTURE OF PORPHYRIDIUM CRUENTUM. https://app.cochat.ai/papers/10.1083/jcb.26.2.365
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- Gantt, E., & Conti, S. F. (1965). THE ULTRASTRUCTURE OF PORPHYRIDIUM CRUENTUM. The Journal of Cell Biology. https://doi.org/10.1083/jcb.26.2.365
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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