The Vacuole System Is a Significant Intracellular Pathway for Longitudinal Solute Transport in Basidiomycete Fungi

DOI Web Site 4 Citations
  • M. Tlalka
    Department of Plant Sciences, University of Oxford, South Parks Road, Oxford OX1 3RB, United Kingdom
  • P. R. Darrah
    Department of Plant Sciences, University of Oxford, South Parks Road, Oxford OX1 3RB, United Kingdom
  • S. C. Watkinson
    Department of Plant Sciences, University of Oxford, South Parks Road, Oxford OX1 3RB, United Kingdom
  • A. Ashford
    School of Biological, Earth and Environmental Sciences, The University of New South Wales, Sydney, NSW 2052, Australia
  • M. D. Fricker
    Department of Plant Sciences, University of Oxford, South Parks Road, Oxford OX1 3RB, United Kingdom

Bibliographic Information

Published
2006-07
Rights Information
  • https://journals.asm.org/non-commercial-tdm-license
DOI
  • 10.1128/ec.00026-06
Publisher
American Society for Microbiology

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Description

<jats:title>ABSTRACT</jats:title> <jats:p>Mycelial fungi have a growth form which is unique among multicellular organisms. The data presented here suggest that they have developed a unique solution to internal solute translocation involving a complex, extended vacuole. In all filamentous fungi examined, this extended vacuole forms an interconnected network, dynamically linked by tubules, which has been hypothesized to act as an internal distribution system. We have tested this hypothesis directly by quantifying solute movement within the organelle by photobleaching a fluorescent vacuolar marker. Predictive simulation models were then used to determine the transport characteristics over extended length scales. This modeling showed that the vacuolar organelle forms a functionally important, bidirectional diffusive transport pathway over distances of millimeters to centimeters. Flux through the pathway is regulated by the dynamic tubular connections involving homotypic fusion and fission. There is also a strongly predicted interaction among vacuolar organization, predicted diffusion transport distances, and the architecture of the branching colony margin.</jats:p>

Journal

  • Eukaryotic Cell

    Eukaryotic Cell 5 (7), 1111-1125, 2006-07

    American Society for Microbiology

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