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[Resistance to heavy metals in ruminal staphylococci]
1Ustav fyziológie hospodárskych zvierat SAV, Kosice.
Veterinarni Medicina
|January 1, 1994
Summary
Ruminal staphylococci exhibit significant resistance to heavy metals and antibiotics, with one strain showing resistance to all tested agents and producing antimicrobial substances. This highlights their potential as bioindicators in animal environmental studies.
Area of Science:
- Microbiology
- Environmental Science
Context:
- Staphylococci are common in animal rumens.
- Heavy metal and antibiotic resistance are growing concerns in microbial ecosystems.
Purpose:
- To investigate heavy metal and antibiotic resistance in ruminal staphylococci.
- To identify strains with polyresistance and antimicrobial properties.
Summary:
- Screened ruminal staphylococci for resistance to heavy metals (disodium arsenate, cadmium sulphate, mercury chloride, silver nitrate) and antibiotics.
- All strains showed resistance to disodium arsenate and cadmium sulphate; many were resistant to mercury chloride and silver nitrate. All strains were novobiocin resistant.
- Staphylococcus cohnii subsp. urealyticum SCU 40 displayed resistance to all tested heavy metals and five antibiotics, also producing a bacteriocin-like substance.
Impact:
- Provides novel data on heavy metal resistance in ruminal bacteria.
- Suggests a core-resistance relationship between heavy metals and antibiotics.
- Establishes ruminal staphylococci as potential bioindicators for animal environmental monitoring and molecular genetic studies.