Table 1.

Operational taxonomic units (OTUs) that showed a significant difference in abundance between healthy and diseased tissues (White’s non-parametric t-test).

Sample	OTU	Class	Order	Best match	Similarity	Origin or bacterial strain	Reference
Healthy	OTU 62	Alphaproteobacteria	Rhodobacterales	HE574911	98%	Euprymna scolopes (squid)	Collins et al., 2012
	OTU 185	Alphaproteobacteria	Rhodobacterales	NR_118329	100%	Loktanella litorea	Yoon et al., 2013
	OTU 102	Alphaproteobacteria	Rhodobacterales	AB611495	97%	Sea water	Yoshida-Takashima et al., 2012
	OTU 362	Chloroflexi	Ardenticatenia	KU688646	96%	Cystoseira compressa (brown algae)	Mancuso et al., 2016
	OTU 380	Alphaproteobacteria	Parvularculales	EF123358	99%	Siderastrea siderea (coral)	Sekar et al., 2008
Band syndrome	OTU 23	Alphaproteobacteria	Rhodobacterales	GU118282	98%	Diploria strigosa (coral)	Sunagawa et al., 2010
	OTU 172	Alphaproteobacteria	Rhodobacterales	AY038533	98%	Black band diseased coral	Frias-Lopez et al., 2002
	OTU 239	Alphaproteobacteria	Rhodobacterales	KY577415	98%	Black band diseased Orbicella faveolata (coral)	Unpublished
Patch disease	OTU 20	Alphaproteobacteria	Rickettsiales	FJ930418	98%	Porites lobata (coral)	Unpublished
	OTU 665	Gammaproteobacteria	Vibrionales	KP329558	100%	Vibrio tubiashii Strain T33	Mohamad et al., 2015

Operational taxonomic units are given together with their best match in GenBank.