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Applied and Environmental Microbiology, September 2000, p. 4145-4148, Vol. 66, No. 9
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Molecular Phylogeny of Anabaena circinalis and Its Identification in Environmental Samples by PCR

Kim M. Fergusson and Christopher P. Saint*

The Cooperative Research Centre for Water Quality and Treatment, Australian Water Quality Centre, SA Water Corporation, Salisbury, South Australia 5108, Australia

Received 24 April 2000/Accepted 29 June 2000

Although the cyanobacterium Anabaena circinalis occurs worldwide, Australian isolates are believed to exclusively possess the saxitoxin group neurotoxins (paralytic shellfish poisons). Identification of A. circinalis in a mixed population is complicated due to limited morphological differences between Anabaena species. Sequence analysis of the DNA-dependent RNA polymerase (rpoC1) gene from 24 Anabaena isolates, including 12 designated A. circinalis, permitted a phylogenetic analysis to be performed. In addition, an A. circinalis-specific PCR was developed and tested successfully on environmental samples.

* Corresponding author. Mailing address: Australian Water Quality Centre, SA Water Corporation, Private Mail Bag 3, Salisbury, South Australia 5108, Australia. Phone: 618 8259 0331. Fax: 618 8259 0228. E-mail: chris.saint{at}sawater.sa.gov.au.

Applied and Environmental Microbiology, September 2000, p. 4145-4148, Vol. 66, No. 9
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.


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