Auxotrophic interactions: a stabilizing attribute of aquatic microbial communities?

FEMS Microbiology Ecology
Winifred M JohnsonHeidi Smith

Abstract

Auxotrophy, or an organism's requirement for an exogenous source of an organic molecule, is widespread throughout species and ecosystems. Auxotrophy can result in obligate interactions between organisms, influencing ecosystem structure and community composition. We explore how auxotrophy-induced interactions between aquatic microorganisms affect microbial community structure and stability. While some studies have documented auxotrophy in aquatic microorganisms, these studies are not widespread, and we therefore do not know the full extent of auxotrophic interactions in aquatic environments. Current theoretical and experimental work suggests that auxotrophy links microbial community members through a complex web of metabolic dependencies. We discuss the proposed ways in which auxotrophy may enhance or undermine the stability of aquatic microbial communities, highlighting areas where our limited understanding of these interactions prevents us from being able to predict the ecological implications of auxotrophy. Finally, we examine an example of auxotrophy in harmful algal blooms to place this often theoretical discussion in a field context where auxotrophy may have implications for the development and robustness of algal bloom co...Continue Reading

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Citations

Aug 29, 2020·FEMS Microbiology Ecology·Adrian HoMarcus A Horn
Dec 24, 2020·Applied and Environmental Microbiology·Thomas KaupperAdrian Ho
Jul 17, 2021·Nature Ecology & Evolution·Leonardo OñaChristian Kost
Nov 18, 2021·Proceedings of the National Academy of Sciences of the United States of America·Suhyun KimJang-Cheon Cho
Sep 22, 2021·Annual Review of Genetics·James Umen, Matthew D Herron

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