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

David M Wilkinson, Angela Creevy, CL Kalu, David W Schwartzman

Research output: Contribution to journalArticle (journal)peer-review

12 Citations (Scopus)
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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.
Original languageEnglish
Pages (from-to)4-7
JournalMycology: An International Journal on Fungal Biology
Issue number1
Early online date28 Oct 2014
Publication statusPublished - 2015


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