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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Touzet, Nicolas Raine, Robin Fleming, Gerard T. A. McCoy, Gary R. |
| Spatial Coverage | Ireland France |
| Description | Author Affiliation: McCoy GR ( The Ryan Institute, National University of Ireland, Galway, Martin Ryan Building, Galway, Ireland, gary.mccoy8@gmail.com.) |
| Abstract | The toxic microalgal species Prymnesium parvum and Prymnesium polylepis are responsible for numerous fish kills causing economic stress on the aquaculture industry and, through the consumption of contaminated shellfish, can potentially impact on human health. Monitoring of toxic phytoplankton is traditionally carried out by light microscopy. However, molecular methods of identification and quantification are becoming more common place. This study documents the optimisation of the novel Microarrays for the Detection of Toxic Algae (MIDTAL) microarray from its initial stages to the final commercial version now available from Microbia Environnement (France). Existing oligonucleotide probes used in whole-cell fluorescent in situ hybridisation (FISH) for Prymnesium species from higher group probes to species-level probes were adapted and tested on the first-generation microarray. The combination and interaction of numerous other probes specific for a whole range of phytoplankton taxa also spotted on the chip surface caused high cross reactivity, resulting in false-positive results on the microarray. The probe sequences were extended for the subsequent second-generation microarray, and further adaptations of the hybridisation protocol and incubation temperatures significantly reduced false-positive readings from the first to the second-generation chip, thereby increasing the specificity of the MIDTAL microarray. Additional refinement of the subsequent third-generation microarray protocols with the addition of a poly-T amino linker to the 5' end of each probe further enhanced the microarray performance but also highlighted the importance of optimising RNA labelling efficiency when testing with natural seawater samples from Killary Harbour, Ireland. |
| ISSN | 09441344 |
| Issue Number | 13 |
| Volume Number | 22 |
| e-ISSN | 16147499 |
| Journal | Environmental Science and Pollution Research |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2015-07-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Environmental Monitoring Methods Haptophyta Genetics Oligonucleotide Array Sequence Analysis Oligonucleotide Probes Acclimatization Dna, Ribosomal France Classification Humans In Situ Hybridization, Fluorescence Ireland Microalgae Nucleic Acid Hybridization Oligonucleotides Phytoplankton Rna Seawater Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine |
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