Planktothrix is a diverse genus of filamentous cyanobacteria observed to amass in algal blooms in water ecosystems across the globe. Like all Oscillatoriales, Planktothrix species have no heterocysts and no akinetes. Planktothrix are unique because they have trichomes and contain gas vacuoles unlike typical planktonic organisms.[1] Previously, some species of the taxon were grouped within the genus Oscillatoria, but recent work has defined Planktothrix as its own genus.[2] A tremendous body of work on Planktothrix ecology and physiology has been done by Anthony E. Walsby, and the 55.6 kb microcystin synthetase gene which gives these organisms the ability to synthesize toxins has been sequenced.[3]P. agardhii is an example of a type species of the genus.[4]P. agardhii and P. rubescens are commonly observed in lakes of the Northern Hemisphere where they are known producers of potent hepatotoxins called microcystins.[5]
Planktothrix rubescens culture. Note the reddish brown color which gave this strain's algal blooms the name "Burgundy-blood phenomenon"Planktothrix rubescens
^Komarek J (2003). "Planktic oscillatorialean cyanoprokaryotes (short review according to combined phenotype and molecular aspects)". Hydrobiologia. 502: 367–382. doi:10.1007/978-94-017-2666-5_30. ISBN 978-90-481-6433-2.
^Suda S, Watanabe MM, Otsuka S, Mahakahant A, Yongmanitchai W, Nopartnaraporn N, Liu Y, Day JG (September 2002). "Taxonomic revision of water-bloom-forming species of oscillatorioid cyanobacteria". International Journal of Systematic and Evolutionary Microbiology. 52 (Pt 5): 1577–1595. doi:10.1099/00207713-52-5-1577. PMID 12361260.
^Christiansen G, Fastner J, Erhard M, Börner T, Dittmann E (January 2003). "Microcystin biosynthesis in planktothrix: genes, evolution, and manipulation". Journal of Bacteriology. 185 (2): 564–72. doi:10.1128/jb.185.2.564-572.2003. PMC 145317. PMID 12511503.
^Komárek J, Komárková J (2004). "Taxonomic review of the cyanoprokaryotic genera Planktothrix and Planktothricoides" (PDF). Czech Phycology. 4: 1–8.
^Sivonen K, Jones G (1999). "Cyanobacterial toxins". In Chorus I, Bertram J (eds.). Toxic cyanobacteria in water: a guide to public health significance, monitoring and management(PDF). London: E&FN Spon. pp. 41–111.
Planktothrix is a diverse genus of filamentous cyanobacteria observed to amass in algal blooms in water ecosystems across the globe. Like all Oscillatoriales...
Planktothrix agardhii is a species of cyanobacteria belonging to the family Oscillatoriaceae. It has cosmopolitan distribution. "Planktothrix agardhii...
spp., some Aphanizomenon spp., Cylindrospermopsis sp., Lyngbya sp. and Planktothrix sp., among others). Puffer fish and some marine dinoflagellates also...
have been shown to produce geosmin include Anabaena, Phormidium, and Planktothrix, while the main genus in the Actinomyces that produces geosmin is Streptomyces...
banks. In 2009 and 2011, the lake suffered from algal blooms, caused by Planktothrix. Lake Ledro originates from the deposition of a morainal bank during...
Cyanopeptolins (CPs) are a class of oligopeptides produced by Microcystis and Planktothrix algae strains, and can be neurotoxic. The production of cyanopeptolins...
Jean-François; et al. (2003). "The proliferation of the toxic cyanobacterium Planktothrix rubescens following restoration of the largest natural French lake (Lac...
Jean-François; et al. (2003). "The proliferation of the toxic cyanobacterium Planktothrix rubescens following restoration of the largest natural French lake (Lac...
eutrophic waters, increasing in abundance during harmful algal blooms of Planktothrix agardhii. Most species are photosynthetic; therefore, contributing to...
Microcystis aeruginosa but also other Microcystis, as well as members of the Planktothrix, Anabaena, Oscillatoria and Nostoc genera. Microcystin-LR (i.e. X = leucine...
suggested that glyphosate may lead to blooms of another cyanobacterium - Planktothrix - in place of Microcystis. Tooming-Klunderud, Ave (2007). "On the Evolution...
Chatchawan et al. 2012 Planktothricoides Suda & M. M. Watanabe 2002 Planktothrix Anagnostidis & Komárek 1988 Porphyrosiphon Kützing ex Gomont 1892 Proterendothrix...
showed a near doubling in grazing rates on the filamentous cyanobacteria Planktothrix in the presence of chytrid parasites. However, another study conducted...
about 700 m. In December 2013, a toxic cyanobacterial bloom caused by Planktothrix rubescens was observed in the lake, whose water was immediately banned...
Börner, T; Dittmann, E (January 2003). "Microcystin biosynthesis in planktothrix: genes, evolution, and manipulation". Journal of Bacteriology. 185 (2):...
basin at 5 m depth attributed to filamentous cyanobacteria of the genus Planktothrix. This feature shallows throughout the winter. The varved sediments in...
nitrogen fixating algae is present in the lake. During winters and springs, Planktothrix agardhii adopt a red colour which occasionally colours the lake in shades...
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