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How carnivorous fungi use three-celled constricting rings to trap nematodes

Keke Liu1, Jianqing Tian, Meichun Xiang

  • 1State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.

Protein & Cell
|April 25, 2012
PubMed

Insights

Predacious fungi use constricting rings, a unique trapping mechanism, to actively capture nematodes. This review explores the evolutionary and molecular basis of these fascinating fungal hunting structures.

Area of Science:

  • Mycology
  • Evolutionary Biology
  • Nematology

Background:

  • Predacious fungi employ diverse trapping structures to capture microscopic prey.
  • Constricting rings represent a unique, active nematode-trapping mechanism among fungal adaptations.

Purpose of the Study:

  • To review current data and hypotheses regarding the evolution of fungal constricting rings.
  • To explore the cytological and molecular mechanisms underlying constricting ring function.

Main Methods:

  • Literature review of studies on predacious fungi and nematode trapping.
  • Analysis of evolutionary trends and conservation of trapping mechanisms.
  • Examination of cytological and molecular data related to ring formation and function.

Main Results:

  • Constricting rings are the only active nematode-capturing devices among fungal trapping structures.
  • The trapping mechanism involves rapid cell volume increase to constrict the ring aperture.
  • Subsequent hyphal penetration and digestion of the ensnared nematode.

Conclusions:

  • The evolution of constricting rings highlights adaptive strategies in fungi for prey capture.
  • Understanding the cytological and molecular basis provides insights into cellular mechanics and evolution.
  • Further research is needed to fully elucidate the evolutionary pathways and molecular underpinnings.

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