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Publication - Professor Marian Yallop

    Characterising the microbiome of Corallina officinalis, a dominant calcified intertidal red alga


    Brodie, J, Williamson, C, Barker, GL, Walker, RH, Briscoe, A & Yallop, M, 2016, ‘Characterising the microbiome of Corallina officinalis, a dominant calcified intertidal red alga’. FEMS Microbiology Ecology, vol 92.


    The living prokaryotic microbiome of the calcified geniculate (articulated) red alga, Corallina officinalis
    from the intertidal seashore is characterised for the first time based
    on the V6 hypervariable region of 16S rRNA. Results revealed an
    extraordinary diversity of bacteria associated with the microbiome.
    Thirty-five prokaryotic phyla were recovered, of which Proteobacteria,
    Cyanobacteria, Bacteroidetes, Actinobacteria, Planctomycetes,
    Acidobacteria, Verrucomicrobia, Firmicutes and Chloroflexi made up the
    core microbiome. Unclassified sequences made up 25% of sequences,
    suggesting insufficient sampling of the world's oceans/macroalgae. The
    greatest diversity in the microbiome was on the upper shore, followed by
    the lower shore then the middle shore, although the microbiome
    community composition did not vary between shore levels. The C. officinalis
    core microbiome was broadly similar in composition to those reported in
    the literature for crustose coralline algae (CCAs) and free-living
    rhodoliths. Differences in relative abundance of the phyla between the
    different types of calcified macroalgal species may relate to the
    intertidal versus subtidal habit of the taxa and functionality of the
    microbiome components. The results indicate that much work is needed to
    identify prokaryotic taxa, and to determine the nature of the
    relationship of the bacteria with the calcified host spatially,
    temporally and functionally.

    Full details in the University publications repository