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Cytomembrane differentiation in the endoplasmic reticulum-Golgi apparatus-vesicle complex
Science (New York, N.Y.)
|July 12, 1968
Abstract:
Diversity of cytomembrane types is confirmed in hyphae of the fungus Pythium ultimum by electron microscopy. A transition in membrane morphology across stacks of dictyosome cisternae (from endoplasmic reticulumlike at one pole to plasma membrane-like at the opposite pole) suggests that dictyosomes of the Golgi apparatus are sites of membrane interconversion.
Insights
Electron microscopy revealed diverse cytomembranes in Pythium ultimum hyphae. The Golgi apparatus
Area of Science:
- Mycology and cell biology.
Background:
- Fungal hyphae possess complex cellular structures crucial for growth and development.
- The precise roles of the Golgi apparatus in fungal membrane dynamics are not fully elucidated.
Purpose of the Study:
- To investigate the diversity of cytomembrane types within the hyphae of Pythium ultimum.
- To explore the potential role of dictyosomes in membrane interconversion within fungal cells.
Main Methods:
- Utilizing high-resolution electron microscopy to examine the ultrastructure of Pythium ultimum hyphae.
- Observing and analyzing the morphology of cytomembranes and dictyosome cisternae.
Main Results:
- Confirmed the presence of diverse cytomembrane types in Pythium ultimum hyphae.
- Observed a distinct transition in membrane morphology across dictyosome cisternae, from endoplasmic reticulum-like to plasma membrane-like.
- Identified dictyosomes as potential sites for membrane interconversion.
Conclusions:
- The Golgi apparatus, specifically its dictyosomes, plays a significant role in fungal membrane dynamics.
- Pythium ultimum exhibits sophisticated membrane trafficking and interconversion mechanisms within its hyphae.