ArticleApplied and environmental microbiology2012
Community composition, toxigenicity, and environmental conditions during a cyanobacterial bloom occurring along 1,100 kilometers of the Murray River.
Article in Applied and environmental microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
- Network-Scale Patterns and Drivers of Microcystins in a Heavily Impacted Watershed.Ecosystems (New York, N.Y.) · 2026Article
- Global Occurrence of Cyanotoxins in Drinking Water Systems: Recent Advances, Human Health Risks, Mitigation, and Future Directions.Life (Basel, Switzerland) · 2025Review
- Potential health risk assessment of cyanobacteria across global lakes.Applied and environmental microbiology · 2024Article
- The Changes in Cyanobacterial Concentration of β-Methylamino-L-Alanine during a Bloom Event.Molecules (Basel, Switzerland) · 2022Article
- Linear Six-Carbon Sugar Alcohols Induce Lysis ofFrontiers in microbiology · 2022Article
- Potentially Toxic Planktic and Benthic Cyanobacteria in Slovenian Freshwater Bodies: Detection by Quantitative PCR.Toxins · 2021Article
- Nutrient Regulation of Relative Dominance of Cylindrospermopsin-Producing and Non-cylindrospermopsin-ProducingFrontiers in microbiology · 2021Article
- Global scanning of cylindrospermopsin: Critical review and analysis of aquatic occurrence, bioaccumulation, toxicity and health hazards.The Science of the total environment · 2020Review
- First report of anatoxin-a producing cyanobacteria in Australia illustrates need to regularly up-date monitoring strategies in a shifting global distribution.Scientific reports · 2019Article
- Article
- Influence of cyanobacteria, mixotrophic flagellates, and virioplankton size fraction on transcription of microcystin synthesis genes in the toxic cyanobacterium Microcystis aeruginosa.MicrobiologyOpen · 2018Article
- An evaluation of a handheld spectroradiometer for the near real-time measurement of cyanobacteria for bloom management purposes.Environmental monitoring and assessment · 2017Article
- Satellite monitoring of cyanobacterial harmful algal bloom frequency in recreational waters and drinking source waters.Ecological indicators · 2017Article
- Use of three monitoring approaches to manage a major Chrysosporum ovalisporum bloom in the Murray River, Australia, 2016.Environmental monitoring and assessment · 2017Article
- Influence of temperature, mixing, and addition of microcystin-LR on microcystin gene expression in Microcystis aeruginosa.MicrobiologyOpen · 2017Article
- Temporal Dynamics of the Microbial Community Composition with a Focus on Toxic Cyanobacteria and Toxin Presence during Harmful Algal Blooms in Two South German Lakes.Frontiers in microbiology · 2017Article
- Review
- Microbial communities reflect temporal changes in cyanobacterial composition in a shallow ephemeral freshwater lake.The ISME journal · 2016Article
- Toxic cyanobacterial bloom triggers in missisquoi bay, lake champlain, as determined by next-generation sequencing and quantitative PCR.Life (Basel, Switzerland) · 2015Article
- Comparison of cyanobacterial microcystin synthetase (mcy) E gene transcript levels, mcy E gene copies, and biomass as indicators of microcystin risk under laboratory and field conditions.MicrobiologyOpen · 2014Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A cyanobacterial bloom impacted over 1,100 km of the Murray River, Australia, and its tributaries in 2009. Physicochemical conditions in the river were optimal to support a bloom at the time. The data suggest that at least three blooms occurred concurrently in different sections of the river, with each having a different community composition and associated cyanotoxin profile. Microscopic and genetic analyses suggested the presence of potentially toxic Anabaena circinalis, Microcystis flos-aquae, and Cylindrospermopsis raciborskii at many locations. Low concentrations of saxitoxins and cylindrospermopsin were detected in Anabaena and Cylindrospermopsis populations. A multiplex quantitative PCR was used, employing novel oligonucleotide primers and fluorescent TaqMan probes, to examine bloom toxigenicity. This single reaction method identified the presence of the major cyanotoxin-producing species present in these environmental samples and also quantified the various toxin biosynthesis genes. A large number of cells present throughout the bloom were not potential toxin producers or were present in numbers below the limit of detection of the assay and therefore not an immediate health risk. Potential toxin-producing cells, possessing the cylindrospermopsin biosynthesis gene (cyrA), predominated early in the bloom, while those possessing the saxitoxin biosynthesis gene (sxtA) were more common toward its decline. In this study, the concentrations of cyanotoxins measured via enzyme-linked immunosorbent assay (ELISA) correlated positively with the respective toxin gene copy numbers, indicating that the molecular method may be used as a proxy for bloom risk assessment.
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