Quinone reductase activity is widespread in lichens
| Autor: | Farida V. Minibayeva, Calvin Eddington Moyo, Christiane Liers, Richard P. Beckett |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Collema 0303 health sciences biology 030306 microbiology Tyrosinase Leptogium Reductase biology.organism_classification stomatognathic diseases 03 medical and health sciences chemistry.chemical_compound Enzyme chemistry Biochemistry Oxidoreductase Hydroxyl radical Lichen Ecology Evolution Behavior and Systematics 030304 developmental biology |
| Zdroj: | The Lichenologist. 53:265-269 |
| ISSN: | 1096-1135 0024-2829 |
| Popis: | In our earlier work, we demonstrated that the oxidases tyrosinase (TYR), laccase (LAC), and a heme peroxidase (POX) occur widely in lichens. Here we report on the occurrence of another oxidoreductase enzyme, quinone reductase (QR) (EC 1.6.5.5). While QR has been reported to occur widely in other organisms, there is currently no information on QR activities in lichens. Here we present a survey of QR activity in 14 species of lichens. Results demonstrate that QR activity is readily detectable in all lichen species tested. However, activities vary greatly, with ‘jelly’ lichens in the genera Collema and Leptogium having the highest activities. QR, LAC and POX are all believed to have a role in extracellular hydroxyl radical production. However, in this study no correlation was found between the activities of these enzymes and the rates at which hydroxyl radicals were produced. Possible roles for QR in lichen biology are discussed. |
| Databáze: | OpenAIRE |
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