Spiral and Rotor Patterns Produced by Fairy Ring Fungi.

A broad class of soil fungi form the annular patterns known as 'fairy rings' and provide one of the only means to observe spatio-temporal dynamics of otherwise cryptic fungal growth processes in natural environments. We present observations of novel spiral and rotor patterns produced by fa...

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Main Authors: Nathaniel Karst, David Dralle, Sally Thompson
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2016-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4774996?pdf=render
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author Nathaniel Karst
David Dralle
Sally Thompson
author_facet Nathaniel Karst
David Dralle
Sally Thompson
author_sort Nathaniel Karst
collection DOAJ
description A broad class of soil fungi form the annular patterns known as 'fairy rings' and provide one of the only means to observe spatio-temporal dynamics of otherwise cryptic fungal growth processes in natural environments. We present observations of novel spiral and rotor patterns produced by fairy ring fungi and explain these behaviors mathematically by first showing that a well known model of fairy ring fungal growth and the Gray-Scott reaction-diffusion model are mathematically equivalent. We then use bifurcation analysis and numerical simulations to identify the conditions under which spiral waves and rotors can arise. We demonstrate that the region of dimensionless parameter space supporting these more complex dynamics is adjacent to that which produces the more familiar fairy rings, and identify experimental manipulations to test the transitions between these spatial modes. These same manipulations could also feasibly induce fungal colonies to transition from rotor/spiral formation to a set of richer, as yet unobserved, spatial patterns.
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spelling doaj.art-af72b3b74a4c43ca9b2141b2ba88eb0e2022-12-21T17:24:48ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-01113e014925410.1371/journal.pone.0149254Spiral and Rotor Patterns Produced by Fairy Ring Fungi.Nathaniel KarstDavid DralleSally ThompsonA broad class of soil fungi form the annular patterns known as 'fairy rings' and provide one of the only means to observe spatio-temporal dynamics of otherwise cryptic fungal growth processes in natural environments. We present observations of novel spiral and rotor patterns produced by fairy ring fungi and explain these behaviors mathematically by first showing that a well known model of fairy ring fungal growth and the Gray-Scott reaction-diffusion model are mathematically equivalent. We then use bifurcation analysis and numerical simulations to identify the conditions under which spiral waves and rotors can arise. We demonstrate that the region of dimensionless parameter space supporting these more complex dynamics is adjacent to that which produces the more familiar fairy rings, and identify experimental manipulations to test the transitions between these spatial modes. These same manipulations could also feasibly induce fungal colonies to transition from rotor/spiral formation to a set of richer, as yet unobserved, spatial patterns.http://europepmc.org/articles/PMC4774996?pdf=render
spellingShingle Nathaniel Karst
David Dralle
Sally Thompson
Spiral and Rotor Patterns Produced by Fairy Ring Fungi.
PLoS ONE
title Spiral and Rotor Patterns Produced by Fairy Ring Fungi.
title_full Spiral and Rotor Patterns Produced by Fairy Ring Fungi.
title_fullStr Spiral and Rotor Patterns Produced by Fairy Ring Fungi.
title_full_unstemmed Spiral and Rotor Patterns Produced by Fairy Ring Fungi.
title_short Spiral and Rotor Patterns Produced by Fairy Ring Fungi.
title_sort spiral and rotor patterns produced by fairy ring fungi
url http://europepmc.org/articles/PMC4774996?pdf=render
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AT daviddralle spiralandrotorpatternsproducedbyfairyringfungi
AT sallythompson spiralandrotorpatternsproducedbyfairyringfungi