Bioprospection of actinobacteria derived from freshwater sediments for their potential to produce antimicrobial compounds

Table 1 Antimicrobial activity of selected strains of actinobacteria

Strain	Antibacterial properties					Yeast	Biosynthetic genes
Strain	E. coli	P. aeruginosa	S. aureus	M. luteus	B subtilis	C. albicans	PKS-II	NRPS	phzE
Streptomyces sp. DST25	9.40 ± 0.03^a	12.0 ± 0.06^a	9.00 ± 0.06^a	13.2 ± 0.10^a	12.5 ± 0.2^a	12.5 ± 0.20^a	+	+	−
Streptomyces cellulosae DST28	9.50 ± 0.01^a	10.0 ± 0.10^bc	10.0 ± 0.10^bc	12.7 ± 0.10^a	12.5 ± 0.1^a	11.5 ± 0.50^bc	−	−	−
Streptomyces flavogriseus DST52	15.0 ± 0.01^bc	11.5 ± 0.15^a	8.00 ± 0.05^bde	10.8 ± 0.10^bc	8.4 ± 0.00^bc	15.5 ± 0.05^bde	+	+	−
Streptomyces albidoflavus DST71	13.0 ± 0.30^bde	10.0 ± 0.04^bc	6.60 ± 0.40^bdf	6.20 ± 0.20^bde	15.9 ± 0.2^bde	13.8 ± 0.10^bdfg	−	+	+
Streptomyces sp. DST116	9.00 ± 0.30^a	8.50 ± 0.05^bde	9.20 ± 0.25^a	18.8 ± 0.10^bdfg	14.4 ± 0.2^bdfg	12.9 ± 0.05^a	+	+	−
Streptomyces sp. DST119	8.10 ± 0.10^bdf	7.00 ± 0.10^bdf	8.00 ± 0.10^bde	14.3 ± 0.10^bdfh	14.2 ± 0.1^bdfg	13.1 ± 0.10^bdfh	+	+	+

Mean (± SD) followed by the same letter(s) in each column are not significant different at P < 0.05 using Duncan’s new multiple range test

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