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Are heterotrophic and silica-rich eukaryotic microbes an important part of the lichen symbiosis?

Wilkinson, DM and Creevy, AL and Kalu, CL and Schwartzman, DW (2015) Are heterotrophic and silica-rich eukaryotic microbes an important part of the lichen symbiosis? Mycology:An International Journal on Fungal Biology: An International Journal on Fungal Biology, 6 (1). pp. 4-7. ISSN 2150-1211

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Abstract

We speculate that heterotrophic and/or silica-rich eukaryotic microorganisms maybe an important part of the lichen symbiosis. None of the very few studies of heterotrophic protists associated with lichens have considered the possibility that they may be of functional significance in the lichen symbiosis. Here we start to develop, currently speculative, theoretical ideas about their potential significance. For example, all the protist taxa identified in lichens we sampled in Ohio USA depend on silica for growth and construction of their cell walls, this could suggest that silica-rich lichen symbionts may be significant in the biogeochemistry of the lichen symbiosis. We also present arguments suggesting a role for protists
in nitrogen cycling within lichen thalli and a potential role in controlling bacterial populations associated with lichens. In this necessarily speculative paper we highlight areas for future research and how newer technologies may be useful for understanding the full suite of organisms involved in the lichen symbiosis.

Keywords: lichens; protists; symbiosis; testate amoebae; diatom; chrysophyte

Item Type: Article
Additional Information: © 2014 The Author(s). Published by Taylor & Francis. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Subjects: Q Science > QK Botany
Q Science > QR Microbiology
Divisions: Natural Sciences and Psychology
Publisher: Taylor and Francis
Date Deposited: 08 May 2015 14:21
Last Modified: 08 May 2015 14:21
DOI or Identification number: 10.1080/21501203.2014.974084
URI: http://researchonline.ljmu.ac.uk/id/eprint/1051

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