Emma Bell
Distribution of thermophilic endospores in a temperate estuary indicate that dispersal history structures sediment microbial communities
Bell, Emma; Blake, Lynsay I.; Sherry, Angela; Head, Ian M.; Hubert, Casey R.J.
Authors
Lynsay I. Blake
Angela Sherry
Ian M. Head
Casey R.J. Hubert
Abstract
Endospores of thermophilic bacteria are found in cold and temperate sediments where they persist in a dormant state. As inactive endospores that cannot grow at the low ambient temperatures, they are akin to tracer particles in cold sediments, unaffected by factors normally governing microbial biogeography (e.g., selection, drift, mutation). This makes thermophilic endospores ideal model organisms for studying microbial biogeography since their spatial distribution can be directly related to their dispersal history. To assess dispersal histories of estuarine bacteria, thermophilic endospores were enriched from sediments along a freshwater‐to‐marine transect of the River Tyne in high temperature incubations (50°C). Dispersal histories for 75 different taxa indicated that the majority of estuarine endospores were of terrestrial origin; most closely related to bacteria from warm habitats associated with industrial activity. A subset of the taxa detected were marine derived, with close relatives from hot deep marine biosphere habitats. These patterns are consistent with the sources of sediment in the River Tyne being predominantly terrestrial in origin. The results point to microbial communities in estuarine and marine sediments being structured by bi‐directional currents, terrestrial run‐off and industrial effluent as vectors of passive dispersal and immigration.
Citation
Bell, E., Blake, L. I., Sherry, A., Head, I. M., & Hubert, C. R. (2018). Distribution of thermophilic endospores in a temperate estuary indicate that dispersal history structures sediment microbial communities. Environmental Microbiology, 20(3), 1134-1147. https://doi.org/10.1111/1462-2920.14056
Journal Article Type | Article |
---|---|
Acceptance Date | Jan 23, 2018 |
Online Publication Date | Feb 23, 2018 |
Publication Date | Mar 1, 2018 |
Deposit Date | Aug 8, 2018 |
Publicly Available Date | Aug 9, 2018 |
Journal | Environmental Microbiology |
Print ISSN | 1462-2912 |
Electronic ISSN | 1462-2920 |
Publisher | Society for Applied Microbiology |
Peer Reviewed | Peer Reviewed |
Volume | 20 |
Issue | 3 |
Pages | 1134-1147 |
DOI | https://doi.org/10.1111/1462-2920.14056 |
Related Public URLs | https://eprint.ncl.ac.uk/227000 |
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Copyright Statement
© 2018 The Authors. Environmental Microbiology published by Society for Applied Microbiology and John Wiley & Sons Ltd This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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