Modulation of enzyme activities of a lead-adapted strain of Rhizopus arrhizus during bioaccumulation of lead
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články
- MeSH
- antifungální látky metabolismus MeSH
- enzymy metabolismus MeSH
- fungální léková rezistence * MeSH
- fungální proteiny metabolismus MeSH
- kultivační média chemie MeSH
- mycelium účinky léků enzymologie metabolismus MeSH
- olovo metabolismus MeSH
- Rhizopus účinky léků enzymologie metabolismus MeSH
- sulfhydrylové sloučeniny metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- antifungální látky MeSH
- enzymy MeSH
- fungální proteiny MeSH
- kultivační média MeSH
- olovo MeSH
- sulfhydrylové sloučeniny MeSH
Activity of some enzymes of a Pb-adapted strain of Rhizopus arrhizus augmented significantly during bioaccumulation of Pb from a chemically defined medium. The mycelium of a Pb-adapted strain exposed to 1 microg/mL Pb in a defined medium for 10 d at 28 +/- 2 degrees C exhibited, relative to a wild-type strain, increased activities of antioxidant enzymes, i.e. SOD, CAT and GPX and of enzymes like AP and PPO involved in defense against pathogens. Another response is a significant increase in the cellular thiol content after 4 d. The responses to Pb exposure thus include an increase in the antioxidant and anti-pathogen defense, and an increased metal-chelating ability.
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