Table 1.

Taxonomic groups of significant differences at species level

Phylum	Class	Order	Family	Genus	Species	WT (%)	IgA−/− (%)	Stamp p value	maaslin2 p value	maaslin2 q value	Gram
Jejunum
Proteobacteria	Betaproteobacteria	Burkholderiales	Alcaligenaceae	Sutterella		0.2 erell	1.2 erell	0.017	0.009716	0.466376	(−)
Bacteroidetes	Bacteroidia	Bacteroidales	S24-7			18.4 roidal	50.6 roida	0.022	0.141442	0.741488	(−)
Actinobacteria	Coriobacteriia	Coriobacteriales	Coriobacteriaceae	Adlercreutzia		0.1 rcreu	0.4 rcreu	0.029	0.021543	0.513532	(+)
Ileum
Actinobacteria	Coriobacteriia	Coriobacteriales	Coriobacteriaceae	Adlercreutzia		0.0 rcreu	0.3 rcreu	0.018	0.032124	0.600348	(+)
Proteobacteria	Deltaproteobacteria	Desulfovibrionales	Desulfovibrionaceae	Desulfovibrio	C21_c20	0.1 c20vi	0.7 c20vi	0.034	0.128786	0.600348	(−)
Proteobacteria	Betaproteobacteria	Burkholderiales	Alcaligenaceae	Sutterella		0.0 erell	0.7 erell	0.037	0.052296	0.600348	(−)
Actinobacteria	Coriobacteriia	Coriobacteriales	Coriobacteriaceae			0.0 obact	0.2 obact	0.043	0.151946	0.600348	(+)
Faeces
Proteobacteria	Deltaproteobacteria	Desulfovibrionales	Desulfovibrionaceae	Desulfovibrio		ND	0.0 lfovi	0.004	0.868091	0.931884	(−)
Proteobacteria	Betaproteobacteria	Burkholderiales	Alcaligenaceae	Sutterella		0.2 erell	0.5 erell	0.004	0.029101	0.641393	(−)
Actinobacteria	Coriobacteriia	Coriobacteriales	Coriobacteriaceae	Adlercreutzia		0.1 rcreu	0.3 rcreu	0.009	0.072939	0.641393	(+)
Firmicutes	Clostridia	Clostridiales	Ruminococcaceae	Oscillospira	guilliermondii	0.6 lierm	0.3 lierm	0.031	0.839028	0.929958	(+)
Firmicutes	Clostridia	Clostridiales	Ruminococcaceae	Faecalibacterium		0.1 aliba	0.0 aliba	0.043	0.223489	0.641393	(+)
Firmicutes	Clostridia	Clostridiales	Lachnospiraceae	Lachnobacterium		0.1 nobac	0.0 nobac	0.046	0.446701	0.694329	(+)
Bacteroidetes	Bacteroidia	Bacteroidales	Paraprevotellaceae	(Prevotella)		0.2 otell	0.6 otell	0.049	0.173527	0.641393	(−)

ND, not detected.