Dynamics of microcystin-producing and non-microcystin-producingMicrocystispopulations is correlated with nitrate concentration in a Japanese lake
| Autor: | Takashi Yoshida, Naohiko Hosoda, Mitsuhiro Yoshida, Shingo Hiroishi, Yukari Takashima |
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| Rok vydání: | 2007 |
| Předmět: |
Cyanobacteria
Microcystis Genotype Microcystins Population Dynamics Population Fresh Water Microcystin Polymerase Chain Reaction Microbiology chemistry.chemical_compound Bacterial Proteins Japan Nitrate Phycocyanin polycyclic compounds Genetics Microcystis aeruginosa Peptide Synthases education Molecular Biology Population Density chemistry.chemical_classification education.field_of_study Nitrates biology Hepatotoxin biology.organism_classification chemistry DNA Intergenic |
| Zdroj: | FEMS Microbiology Letters. 266:49-53 |
| ISSN: | 1574-6968 0378-1097 |
| DOI: | 10.1111/j.1574-6968.2006.00496.x |
| Popis: | Temporal changes in hepatotoxin microcystin-producing and non-microcystin-producing Microcystis aeruginosa populations were examined in Lake Mikata, Japan. To monitor the densities of the total M. aeruginosa population and the potential microcystin-producing subpopulation, we used a quantitative real-time PCR assay targeting the phycocyanin intergenic spacer and the microcystin synthetase gene (mcyA), respectively. During the sampling period, the ratio of the mcyA subpopulation to the total M. aeruginosa varied considerably, from 0.5% to 35%. When surface nitrate concentrations increased, there was a rise in the relative abundance of the mcyA subpopulation. This was a positive correlation with the nitrate concentrations (r=0.53, P |
| Databáze: | OpenAIRE |
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