[Coral-List] New paper on bacterial community shifts in coral mucus and tissue layers under thermal stress (Sonny TM Lee)

sonny lee sonny.lee at auckland.ac.nz
Mon Dec 7 16:18:07 EST 2015

Dear fellow coral people,

Our recent work on hypothesis-driven experiment on bacterial community
shift in different compartments of the coral colony during bleaching has
just been published online in FEMS Microbiology Ecology


Nubbins of *Acropora muricata* were subjected to increasing water
temperatures of 26°C–33°C, to simultaneously explore the bacterial
diversity in coral mucus and tissues by 16S rRNA gene amplicon sequencing. Both
the mucus and tissues of healthy *A. muricata* were dominated by γ-
*Proteobacteria*, but under thermal stress there was a shift towards
bacteria from the *Verrucomicrobiaceae* and α-*Proteobacteria*.
Members of*Cyanobacteria,
Flavobacteria* and *Sphingobacteria* also become more prominent at higher
temperatures. The relative abundance of *Vibrio* spp. in the coral mucus
increased at 29°C, but at 31°C, there was a drop in the relative abundance
of *Vibrio* spp. in the mucus, with a reciprocal increase in the tissues.
On the other hand, during bleaching, the relative abundance of
*Endozoicomonas* spp. decreased in the tissues with a reciprocal increase
in the mucus. This is the first systematic experiment that shows the
potential for a bacterial community shift between the coral surface mucus
and tissues in a thermally stressed coral.


Sonny T M Lee
PhD Candidate, University of Auckland


i: http://www.env.auckland.ac.nz/uoa/

s: sonny_lee_tm

k: i-institution, s-skype

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