Cell Biology of Hyphal Growth

Gero Steinberg, Miguel A. Peñalva, Meritxell Riquelme, Han A. Wösten, Steven D. Harris

Research output: Contribution to journalReview article

32 Scopus citations

Abstract

Filamentous fungi are a large and ancient clade of microorganisms that occupy a broad range of ecological niches. The success of filamentous fungi is largely due to their elongate hypha, a chain of cells, separated from each other by septa. Hyphae grow by polarized exocytosis at the apex, which allows the fungus to overcome long distances and invade many substrates, including soils and host tissues. Hyphal tip growth is initiated by establishment of a growth site and the subsequent maintenance of the growth axis, with transport of growth supplies, including membranes and proteins, delivered by motors along the cytoskeleton to the hyphal apex. Among the enzymes delivered are cell wall synthases that are exocytosed for local synthesis of the extracellular cell wall. Exocytosis is opposed by endocytic uptake of soluble and membrane-bound material into the cell. The first intracellular compartment in the endocytic pathway is the early endosomes, which emerge to perform essential additional functions as spatial organizers of the hyphal cell. Individual compartments within septated hyphae can communicate with each other via septal pores, which allow passage of cytoplasm or organelles to help differentiation within the mycelium. This article introduces the reader to more detailed aspects of hyphal growth in fungi.

Original languageEnglish (US)
JournalMicrobiology Spectrum
Volume5
Issue number2
DOIs
StatePublished - Apr 1 2017

ASJC Scopus subject areas

  • Physiology
  • Ecology
  • Immunology and Microbiology(all)
  • Genetics
  • Microbiology (medical)
  • Cell Biology
  • Infectious Diseases

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  • Cite this

    Steinberg, G., Peñalva, M. A., Riquelme, M., Wösten, H. A., & Harris, S. D. (2017). Cell Biology of Hyphal Growth. Microbiology Spectrum, 5(2). https://doi.org/10.1128/microbiolspec.FUNK-0034-2016