Nomenclature Abstract for Planktothrix agardhii Suda et al. 2002 emend. McNeill et al. 2006.

The research was aimed to understand the composition and dominancy of aquatic microalgae, and to know the potential toxicity of Cyanobacteria occuring in three lakes of Jakarta-Bogor area. The study was done in 2006. The sampling sites were Lake Sunter 2 (North Jakarta), Lake Babakan (South Jakarta), and Lake Lido (Bogor). The water samples were taken using plankton-net (20 tan mesh) with horizontal tow. The results showed that. the number of microalgal genera in Sunter 2, Babakan, and Lido were different, i.e. 10 genera, 40 genera, and 14 genera, respectively. Cyanobacteria were dominant in Sunter 2 (96%) and Babakan (90.01%). The dominant Cyanobacteria in Sunter 2 was Planktothrix agardhii (53.48%), whereas in Babakan was Chroococcus dispersus (68.52%). The second abundant Cyanobacteria in Sunter 2 was Arthrospira (42.54%). Planktothrix agardhii and Arthrospira are known to produce harmful toxin.

Download Full-text

Prevalence of paralytic shellfish poison-producing Planktothrix agardhii and Cylindrospermopsis raciborskii in a Brazilian semi-arid reservoir

Acta Limnologica Brasiliensia ◽

10.1590/s2179-975x5014 ◽

2015 ◽

Vol 27 (2) ◽

pp. 238-246 ◽

Cited By ~ 4

Author(s):

Ismael Keslley Carloto Lopes ◽

Mario Ubirajara Gonçalves Barros ◽

Carlos João Pestana ◽

José Capelo Neto

Keyword(s):

Drinking Water ◽

Water Supply ◽

Drinking Water Supply ◽

Northeastern Brazil ◽

Cylindrospermopsis Raciborskii ◽

Planktothrix Agardhii ◽

Paralytic Shellfish Poison ◽

Paralytic Shellfish ◽

Three Samples ◽

Semi Arid

Aim: The present study aimed to investigate the composition and toxicity of the phytoplankton in Sítios Novos reservoir, used mainly as drinking water supply for approximately 30,000 people.MethodsSamples were collected between January 2010 and June 2011.ResultsDuring this period 19 taxa of cyanobacteria and 22 of algae were identified. Out of 45 samples collected, algae accounted for no more than 10% of the quantified organisms in 44 samples. Cyanobacteria accounted for 100% of the organisms quantified in three samples and for 99% in other 29 samples. Among the cyanobacteria group, Planktothrix agardhii (Gomont) Anagnostidis & Komárek and Cylindrospermopsis raciborskii (Woloszynska) Seenaya & Subbaraju prevailed and both strains were isolated and identified as paralytic shellfish poison (PSP) producers. C. raciborskii strain has shown to produce SXT and dcSXT while P. agardhii strain has shown to produce dcGTX2 or 3.ConclusionsTo the author’s knowledge, this is the first report of PSP-producer cyanobacteria species isolated in Northeastern Brazil and the first reported of a P. agardhii synthesizing dcGTX2/3.

Download Full-text

Metagenome-Assembled Genome Sequences of Raphidiopsis raciborskii and Planktothrix agardhii from a Cyanobacterial Bloom in Kissena Lake, New York, USA

Microbiology Resource Announcements ◽

10.1128/mra.01380-20 ◽

2021 ◽

Vol 10 (2) ◽

Author(s):

Robbie M. Martin ◽

Michael Kausch ◽

Kimarie Yap ◽

John D. Wehr ◽

Gregory L. Boyer ◽

...

Keyword(s):

New York ◽

Cyanobacterial Bloom ◽

Genome Sequences ◽

High Quality ◽

Planktothrix Agardhii ◽

Content Type ◽

Fresh Waters

ABSTRACT Raphidiopsis raciborskii and Planktothrix agardhii are filamentous, potentially toxin-producing cyanobacteria that form nuisance blooms in fresh waters. Here, we report high-quality metagenome-assembled genome sequences of R. raciborskii and P. agardhii collected from a bloom in Kissena Lake, New York.

Download Full-text