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Modulation of enzyme activities of a lead-adapted strain of Rhizopus arrhizus during bioaccumulation of lead
Bhattacharyya S., Pal T. K., Basumajumdar A.
Jazyk angličtina Země Česko
- MeSH
- antifungální látky metabolismus MeSH
- enzymy metabolismus MeSH
- fungální léková rezistence MeSH
- fungální proteiny metabolismus MeSH
- kultivační média chemie MeSH
- mycelium enzymologie metabolismus účinky léků MeSH
- olovo metabolismus MeSH
- Rhizopus enzymologie metabolismus účinky léků MeSH
- sulfhydrylové sloučeniny metabolismus 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.
Lit.: 14
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- $a Modulation of enzyme activities of a lead-adapted strain of Rhizopus arrhizus during bioaccumulation of lead / $c Bhattacharyya S., Pal T. K., Basumajumdar A.
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- $a Department of Chemical Technology, University of Calcutta, Kolkata sauryya@hotmail.com
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- $a Lit.: 14
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- $a 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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