Journal article
Continental-scale variation in seaweed host-associated bacterial communities is a function of host condition, not geography
Environmental microbiology, Vol.17(10), pp.4078-4088
2015
Abstract
Interactions between hosts and associated microbial communities can fundamentally shape the development and ecology of 'holobionts', from humans to marine habitat-forming organisms such as seaweeds. In marine systems, planktonic microbial community structure is mainly driven by geography and related environmental factors, but the large-scale drivers of host-associated microbial communities are largely unknown. Using 16S-rRNA gene sequencing, we characterized 260 seaweed-associated bacterial and archaeal communities on the kelp Ecklonia radiata from three biogeographical provinces spanning 10° of latitude and 35° of longitude across the Australian continent. These phylogenetically and taxonomically diverse communities were more strongly and consistently associated with host condition than geographical location or environmental variables, and a 'core' microbial community characteristic of healthy kelps appears to be lost when hosts become stressed. Microbial communities on stressed individuals were more similar to each other among locations than those on healthy hosts. In contrast to biogeographical patterns of planktonic marine microbial communities, host traits emerge as critical determinants of associated microbial community structure of these holobionts, even at a continental scale. © 2015 Society for Applied Microbiology and John Wiley & Sons Ltd.
Details
- Title
- Continental-scale variation in seaweed host-associated bacterial communities is a function of host condition, not geography
- Authors
- E M Marzinelli (Author) - University of New South WalesAlexandra H Campbell (Author) - University of New South WalesE Zozaya Valdes (Author) - University of New South WalesA Vergés (Author) - University of New South WalesS Nielsen (Author) - University of New South WalesT Wernberg (Author) - University of Western AustraliaT de Bettignies (Author) - University of Western AustraliaS Bennett (Author) - University of Western AustraliaJ G Caporaso (Author) - Northern Arizona University, United StatesT Thomas (Author) - University of New South WalesP D Steinberg (Author) - University of New South Wales
- Publication details
- Environmental microbiology, Vol.17(10), pp.4078-4088
- Publisher
- Wiley-Blackwell Publishing Ltd.
- Date published
- 2015
- DOI
- 10.1111/1462-2920.12972
- ISSN
- 1462-2920; 1462-2920
- Organisation Unit
- School of Health - Biomedicine; University of the Sunshine Coast, Queensland; School of Health and Sport Sciences - Legacy; School of Health and Behavioural Sciences - Legacy
- Language
- English
- Record Identifier
- 99451461702621
- Output Type
- Journal article
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- Domestic collaboration
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- Microbiology
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