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Coordinated process of polarized growth in filamentous fungi

Norio Takeshita1,2

  • 1a Department of Microbiology , Institute for Applied Bioscience, Karlsruhe Institute of Technology (KIT) , Karlsruhe , Germany.

Bioscience, Biotechnology, and Biochemistry
|April 29, 2016
PubMed

Insights

Filamentous fungi maintain cell polarity through dynamic cytoskeletal organization and protein trafficking at hyphal tips. This process involves transient assembly and disassembly of polarity sites, crucial for growth and function.

Area of Science:

  • Mycology
  • Cell Biology
  • Biotechnology

Background:

  • Filamentous fungi exhibit extreme polarity, growing continuously at hyphal tips.
  • This polarized growth is vital for fungal pathogenicity and biotechnological applications.
  • Polarized growth necessitates directed transport of proteins and lipids via cytoskeletal networks.

Purpose of the Study:

  • To review recent findings on the mechanisms of polarized fungal growth.
  • To emphasize the roles of the actin and microtubule cytoskeleton in maintaining cell polarity.
  • To explore the function of polarity marker proteins in this process.

Main Methods:

  • Review of current scientific literature.
  • Analysis of findings from super-resolution microscopy studies.
  • Synthesis of research on vesicle trafficking and cytoskeletal dynamics.

Main Results:

  • Cell polarity in filamentous fungi is established and maintained by the cytoskeleton.
  • Vesicle trafficking along actin and microtubule tracks delivers essential components to the hyphal tip.
  • Polarity marker proteins are regulated by membrane insertion and dynamic assembly/disassembly cycles.

Conclusions:

  • The cytoskeleton is fundamental for establishing and maintaining filamentous fungal cell polarity.
  • Dynamic regulation of polarity sites, including transient assembly and disassembly, is key to tip growth.
  • Understanding these mechanisms offers insights into fungal pathogenicity and biotechnology.
Keywords:
Aspergillusactinexocytosismicrotubulepolarity

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