Table 4B.

SOB community composition based on taxonomic information of the soxB and 16S rRNA genes.

Family level	OTUs		Total abundance (%)
	16S rRNA	soxB	16S rRNA	soxB
Spirochaetaceae	30	8	0.03–0.69	0.85–5.04
Chlorobiaceae	–	2	–	0.13–13.08
Helicobacteraceae	5	–	0.02–4.57	–
Rhodospirillaceae	42	5	0.24–1.43	0.12–3.75
Rhodobacteraceae	27	20	0.27–3.32	1.33–14.74
Bradyrhizobiaceae	1	35	0–0.01	15.79–36.26
Hyphomicrobiaceae	16	2	1.38–2.67	0.01–3.51
Rhizobiaceae	1	–	0–0.01	–
Neisseriaceae	1	–	0–0.03	–
Comamonadaceae	7	3	0.02–0.15	0.05–2.88
Ectothiorhodospiraceae	10	2	0.07–0.56	0.09–6.38
Thiotrichaceae	7	2	0–0.07	0.06–1.60
Piscirickettsiaceae	44	4	0.52–13.67	0–3.38
Burkholderiaceae	–	6	–	0.13–4.82
Oxalobacteraceae	–	1	–	0–4.36
Hydrogenophilaceae	–	1	–	0–0.44
Chromatiaceae	–	18	–	0.25–7.39
Halothiobacillaceae	–	2	–	0–1.42

–, Not detected.