Document Detail


Excessive Cu and Zn affecting on distribution of the metals and activities of glycolytic and nitrogen incorporating key enzymes in mycelia of ectomycorrhizal fungi Suillus bovinus.
MedLine Citation:
PMID:  11590767     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Concentration of copper and zinc in isolated Suillus bovinus mycelia, used nutrient solution and 0.5 mol/L EDTA mycelia washing solution were measured to investigate the distribution of heavy metals in mycelia growth in excess copper or zinc nutrient solution. Treated with zinc, most of added zinc maintained in used solution, and 9.8%/14.6% was in/on mycelia in treatment, and in treatment 2 was 3.9%/8.0% in/on mycelia. In the copper applications, copper stimulated in more than on mycelia, i.e., 25.9%/4.5% in/on mycelia in treatment, and 7%/18.8% in/on mycelia while most of copper retained in used nutrient solution. Certain amount of copper or zinc uptake by mycelia led to pronounced influence on glycolysis and nitrogen incorporating process of Suillus bovinus, while the tested enzymes kept constant in treatment. In crude extracts of copper treatment 2 mycelia, activities of HK, PFK and GS were inhibited and decrease to 63%, 48% and 38% and GIDH increased by 68% of the control, respectively. The behaviors of these tested enzymes toward zinc corresponded in general with that towards copper. The potential protection of Suillus bovinus for its host plant under excess copper or zinc threaten was discussed.
Authors:
Y Huang; S Tao
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of environmental sciences (China)     Volume:  13     ISSN:  1001-0742     ISO Abbreviation:  J Environ Sci (China)     Publication Date:  2001 Jul 
Date Detail:
Created Date:  2001-10-09     Completed Date:  2002-02-04     Revised Date:  2008-02-08    
Medline Journal Info:
Nlm Unique ID:  100967627     Medline TA:  J Environ Sci (China)     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  337-41     Citation Subset:  IM    
Affiliation:
Department of Urban and Environmental Sciences, Peking University, Beijing 100871, China. yhuang@urban.pku.edu.cn
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MeSH Terms
Descriptor/Qualifier:
Basidiomycota / drug effects*,  enzymology,  growth & development
Copper / pharmacology*
Edetic Acid / pharmacology
Glutamate Dehydrogenase / metabolism
Glutamate-Ammonia Ligase / metabolism
Glycolysis / drug effects*
Hexokinase / metabolism
Nitrogen / metabolism*
Phosphofructokinase-1 / metabolism
Pyruvate Kinase / metabolism
Transaminases / metabolism
Zinc / pharmacology*
Chemical
Reg. No./Substance:
60-00-4/Edetic Acid; 7440-50-8/Copper; 7440-66-6/Zinc; 7727-37-9/Nitrogen; EC 1.4.1.2/Glutamate Dehydrogenase; EC 2.6.1.-/Transaminases; EC 2.6.1.15/glutamine-pyruvate aminotransferase; EC 2.7.1.1/Hexokinase; EC 2.7.1.11/Phosphofructokinase-1; EC 2.7.1.40/Pyruvate Kinase; EC 6.3.1.2/Glutamate-Ammonia Ligase

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


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