Document Detail


Effects of heavy metals on the production of thiol compounds by the aquatic fungi Fontanospora fusiramosa and Flagellospora curta.
MedLine Citation:
PMID:  16321439     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aquatic hyphomycetes Fontanospora fusiramosa and Flagellospora curta isolated from a clean and a metal-contaminated site, respectively, were tested for the production of thiol compounds when exposed to Cd, Zn, and Cu for short- and long-term periods. After 8 days, control cultures of F. curta had a total thiol (T-SH) concentration in mycelia of 3.46 +/- 0.37 micromol g(-1) dry mass, which was 2.4 times greater than that of F. fusiramosa. In both species, nonprotein (NP-SH) and protein-bound (PB-SH) thiols accounted for 30% and 70% of T-SH, respectively. F. curta increased the production of thiol compounds, namely NP-SH, more rapidly than F. fusiramosa when exposed to Cd or Zn. The greater increases in either NP-SH or PB-SH occurred in F. fusiramosa after long-term exposure to all metals; in this case, the increases of PB-SH overwhelmed those of NP-SH. Long-term exposure to metals also increased the mycelial protein concentration.
Authors:
Luís Guimarães-Soares; Cláudia Pascoal; Fernanda Cássio
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Ecotoxicology and environmental safety     Volume:  66     ISSN:  0147-6513     ISO Abbreviation:  Ecotoxicol. Environ. Saf.     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2006-11-13     Completed Date:  2007-02-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7805381     Medline TA:  Ecotoxicol Environ Saf     Country:  United States    
Other Details:
Languages:  eng     Pagination:  36-43     Citation Subset:  IM    
Affiliation:
Departamento de Biologia, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
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MeSH Terms
Descriptor/Qualifier:
Ascomycota / drug effects*,  metabolism
Cadmium / toxicity
Copper / toxicity
Metals, Heavy / toxicity*
Mycelium / drug effects,  metabolism
Sulfhydryl Compounds / metabolism*
Zinc / toxicity
Chemical
Reg. No./Substance:
0/Metals, Heavy; 0/Sulfhydryl Compounds; 7440-43-9/Cadmium; 7440-50-8/Copper; 7440-66-6/Zinc

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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