Cited by 229Aquatic Ecosystems and Phytoplankton DynamicsMicrobial Natural Products and BiosynthesisBiocrusts and Microbial Ecology

Molecular identification and evolution of the cyclic peptide hepatotoxins, microcystin and nodularin, synthetase genes in three orders of cyanobacteria

Jungblut, Anne-Dorothee, Neilan, Brett A.·2006·Archives of Microbiology

Abstract

The cyanobacterial hepatotoxins, microcystin and nodularin, are produced by a wide range of cyanobacteria. Microcystin production has been reported in the four cyanobacterial orders: Oscillatoriales, Chroococcales, Stigonematales, and Nostocales. The production of nodularin is a distinct characteristic of the Nostocales genus Nodularia. A single rapid method is needed to reliably detect cyanobacteria that are potentially capable of producing these hepatotoxins. To this end, a PCR was designed to detect all potential microcystin and nodularin-producing cyanobacteria from laboratory cultures as well as in harmful algal blooms. The aminotransferase (AMT) domain, which is located on the modules mcyE and ndaF of the microcystin and nodularin synthetase enzyme complexes, respectively, was chosen as the target sequence because of its essential function in the synthesis of all microcystins as well as nodularins. Using the described PCR, it was possible to amplify a 472 bp PCR product from the AMT domains of all tested hepatotoxic species and bloom samples. Sequence data provided further insight into the evolution of the microcystin and nodularin synthetases through bioinformatic analyses of the AMT in microcystin and nodularin synthetases, with congruence between the evolution of 16S rRNA and the AMT domain.

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Crossref · 10.1007/s00203-005-0073-5

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Authors
Jungblut, A.-D., & Neilan, B. A.
Affiliations
UNSW Sydney (AU)
Corresponding author
Neilan, Brett A.
Venue
Archives of Microbiology
Published
2006-01-10
Volume
185
Issue
2
Pages
107-114
ISSN
  • 0003-9276 (ISSN-L)
  • 0302-8933
  • 1432-072X
OpenAlex
W2053104983
Cited by
229
References
60
Citations by year
2026: 9 · 2025: 16 · 2024: 12 · 2023: 17 · 2022: 8 · 2021: 12 · 2020: 14 · 2019: 14 · 2018: 9 · 2017: 17 · 2016: 6 · 2015: 7 · 2014: 11 · 2013: 15 · 2012: 12
FWCI
7.88
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Microbiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Australian Research Council
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
  • Health Sciences › Medicine › Pharmacology › Microbial Natural Products and Biosynthesis
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Biocrusts and Microbial Ecology
Keywords
microcystins, nodularin, cyanobacterial hepatotoxins, Nodularia, harmful algal blooms, cyanobacterial evolution, Oscillatoriales, Chroococcales, Stigonematales, Nostocales
MeSH terms
Cyanobacteria, Bacterial Proteins, Bacterial Toxins, Base Sequence, DNA, Bacterial, Molecular Sequence Data, Peptide Synthases, Peptides, Cyclic, Phylogeny, Sequence Homology, Nucleic Acid, Sequence Analysis, DNA, Evolution, Molecular, Microcystins

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