ArticleEnvironmental science and pollution research international2013
Molecular probes for the detection and identification of ichthyotoxic marine microalgae of the genus Pseudochattonella (Dictyochophyceae, Ochrophyta).
Article in Environmental science and pollution research international, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 14 citations in OpenAlex.
- Interspecific Competition Study Between Pseudochattonella farcimen and P. verruculosa (Dictyochophyceae)-Two Ichthyotoxic Species that Co-occur in Scandinavian Waters.Microbial ecology · 2017Article
- Parallel detection of harmful algae using reverse transcription polymerase chain reaction labeling coupled with membrane-based DNA array.Environmental science and pollution research international · 2014Article
- Molecular probes and microarrays for the detection of toxic algae in the genera Dinophysis and Phalacroma (Dinophyta).Environmental science and pollution research international · 2013Article
- Seasonal dynamics of harmful algae in outer Oslofjorden monitored by microarray, qPCR, and microscopy.Environmental science and pollution research international · 2013Article
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3 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Phytoflagellates of the genus Pseudochattonella (Dictyochophyceae, Ochrophyta) form blooms in marine coastal waters in northern Europe, Japan, and New Zealand that at times cause fish kills with severe losses for the aquaculture industry. The aim of this study was to develop molecular probes for the detection and identification of Pseudochattonella at the genus and species level. A variety of probes were developed and applied to either dot blot hybridization, (q)PCR, or microarray format. In the dot blot hybridization assay, five different oligonucleotide probes targeting the small subunit (SSU) rDNA were tested against DNA from 18 microalgal strains and shown to be specific to the genus Pseudochattonella. A genus-specific PCR assay was developed by identifying an appropriate primer pair in the SSU-internal transcribed spacer 1 (ITS1) rDNA region. Its specificity was tested by screening against both target and non-target strains, and the assay was used to confirm the presence or absence of Pseudochattonella species in environmental samples. In order to distinguish between the two species of the genus, two PCR primer pairs each biased towards one of the species were designed in the large subunit (LSU) rDNA D1 domain and used for quantitative real-time PCR. Five selected probes (three SSU and two LSU rDNA) were adapted for the use on microarrays and included on a prototype multi-species microarray for the detection of harmful algae ( http://www.midtal.com ). Finally, microarrays and qPCR were used for the monthly monitoring of a sampling site in outer Oslofjorden during a 1-year period. Members of Pseudochattonella are difficult to identify by light microscopy in Lugol's preserved samples, and the two species Pseudochattonella verruculosa and Pseudochattonella farcimen can be morphologically distinguished only by transmission electron microscopy. The molecular probes designed in this study will be a valuable asset to microscopical detection methods in the monitoring of harmful algae and for biogeographical and ecological studies of this genus.
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