Inhibitory effect of streptococci on the growth of M. catarrhalis strains and the diversity of putative bacteriocin-like gene loci in the genomes of S. pneumoniae and its relatives

AMB Express

Table 2 Inhibitory effect of streptococci under study on the growth of M. catarrhalis strains

	Size of zones of the inhibition of M. catarrhalis str. 51 growth by streptococci, mm^a
	+ catalase (4000 units/plate)	+ catalase (4000 units/plate) + chloroform	+ catalase (10,000 units/plate)	+ catalase (10,000 units/plate) + chloroform
Test strains
S. pneumoniae
Spn_357	5/6^b	0/0	2	0
Spn_2009	9/10	0/0	10	0
NT S. pneumoniae
Spn-NT_13856	3/8	0/0	2	0
Spn-NT_2298	8/5	0/0	4	0
S. pseudopneumoniae
Spspn_G42	3/2	0/0	4	0
Spspn_22725	3/5	0/0	2	0
S. mitis
Sm_11/5	2/5	9	5	7
Sm_13/39	3/5	5	4	6
Sm_18/56	7/12	6	7	7

^aIn the cases when the bottom agar layer stabbed with the test strains was not treated with catalase, we have observed very extensive, often merging zones of M. catarrhalis strains growth inhibition, or no growth of the indicator strain at all
^bSlash marks the repeat of experiments