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Table 3 Sensitivity of some indicator strains to SID EGY II

From: Unusual non-fluorescent broad spectrum siderophore activity (SID EGYII) by Pseudomonas aeruginosa strain EGYII DSM 101801 and a new insight towards simple siderophore bioassay

Indicator strain

SID EGY II activity (SAU/mL: inhibition zone diameter in mm)a

Gram-nature

Bacteria

 Acinetobactersp. (clinical isolate, Faculty of Medicine, University of Alexandria)

0.00

Gram-negative

 Bacillus subtilis NCTC 10400/ATCC 6633

0.00

Gram-positive

 B. subtilis (environmental strain isolated from soil, Egypt)

173.3 ± 6.7

Gram-positive

 B. subtilis AS1 (environmental strain isolated from soil, Egypt)

0.00

Gram-positive

 Bacillus subtilis EMBLAKE (environmental strain isolated fromEl-Mahmoudia lake, Egypt)

0.00

Gram-positive

 Bacillus sp. YAS 1(environmental strain isolated from soil, Egypt)

0.00

Gram-positive

 Bacillus sp. Ash2 (environmental strain isolated from soil, Egypt)

0.00

Gram-positive

 B. cereus (environmental strain isolated from soil, Egypt)

0.00

Gram-positive

 B. licheniformis SHG2 (environmental strain isolated from soil, Egypt)

0.00

Gram-positive

 B. licheniformis SHG6(environmental strain isolated from soil, Egypt)

0.00

Gram-positive

 B. licheniformis SHG10 DSM 28096 (environmental strain isolated from soil, Egypt)

0.00

Gram-positive

 Campylobacter jejuni NCTC 11322/ATCC 29428

0.00

Gram-negative

 Citrobacter sp. (clinical isolate, Faculty of Medicine, University of Alexandria, Egypt)

0.00

Gram-negative

 Clostridium perfringens NCTC 8237/ATCC 13124

0.00

Gram-positive

 Escherichia coli NCTC 12241/ATCC 25922

250 ± (5.7)

Gram-negative

 E. coli (clinical isolate, Faculty of Medicine, University of Alexandria, Egypt)

0.00

Gram-negative

 Enterococcus sp.(clinical isolate, Faculty of Medicine, University of Alexandria, Egypt)

0.00

Gram-negative

 Enterobacter aerogenes NCTC10006/ATCC13043

0.00

Gram-negative

 Enterobacter sp. (clinical isolate, Faculty of Medicine, University of Alexandria)

130 ± (9.1)

Gram-negative

 Enterococcus faecalis NCTC 12697/ATCC 29212

336 ± (11.2)

Gram-negative

 E. amylovora strain EGY1 DSM 101800 (Plant pathology department, Faculty of Agriculture, University of Alexandria, Egypt)

390 ± (5.8)

Gram-negative

 Klebsiella sp. (clinical isolate, Faculty of Medicine, University of Alexandria, Egypt)

0.00

Gram-negative

 Listeria innocua NCTC 11288/ATCC 33090

0.00

Gram-negative

 Proteus sp. (clinical isolate, Faculty of Medicine, University of Alexandria, Egypt)

0.00

Gram-negative

 Pseudomonas aueroginosa (clinical isolate, Faculty of Medicine, University of Alexandria, Egypt)

0.00

Gram-negative

 Staphylococcus aureus NCTC 12981/ATCC 25923

176 ± (6.3)

Gram-positive

 S. aureus (clinical isolate, Faculty of Medicine, University of Alexandria, Egypt)

0.00

Gram-positive

 S. epidermidis NCTC 13360/ATCC 12228

0.00

Gram-positive

 Shigella boydii ATCC 9207

110 ± (5.8)

Gram-negative

 Salmonella typhi (clinical isolate, Faculty of Medicine, University of Alexandria, Egypt)

0.00

Gram-negative

 S. paratyphi (clinical isolate, Faculty of Medicine, University of Alexandria,Egypt)

236 ± (8.8)

Gram-negative

 S. typhimurium NCTC 12023/ATCC 14028

0.00

Gram-negative

 Saccharomyces cerevisiae NCPF 3178

0.00

–

 Vibrio parahaemolyticus NCTC 3178

160 ± (11.6)

Gram-negative

Fungi and yeasts

 Aspergillus brasiliensis NCPF2275/ATCC16404

0.00

–

 Candida albicans NCPF 3179/ATCC10231

143 ± (8.6)

–

 Candida tropicalis (human clinical isolate from diabetic foot, Department of Microbiology, Medical Research Institute, University of Alexandria, Egypt)

126.6 ± 3.34

–

  1. aMean of three readings
  2. Values in between the parenthesis indicate standard error (SE)