Planktothrix agardhii

Briand, E., Gugger, M., Frangois, J.C., Bernard, C., Humbert, J.F., Quiblier, C. (2008). Temporal variations in the dynamics of potentially microcystin-producing strains in a bloom-forming Planktothrix agardhii (cyanobacteria) population. Appl. Environ. Microbiol. 74 3839 8. 

Lance, E., Brient, L., Bormans, M. and Gerard, C. Interactions between cyanobacteria and gastrodpods 1. Ingestionof toxic Planktothrix agardhii by Lymnaea stagnalis and the kinetics of microcystin bioaccumulation and detoxification, Aquat. Toxicol, 79, 140, 2006. 

In natural plankton communities, MC-producing and nonproducing strains or clones have been reported to coexist. In the Planktothrix agardhii isolates, for which analytical results are shown in Figure 39.4, MC was detected only in those strains that were positive in a mcyA-specific polymerase chain reaction (PCR) experiment, that is, nonproducing strains lacked the mcy-gene cluster. Producing strains differed markedly in the MC content and the number of structural variants produced from 0.3 DW to 3 mg/g DW and from 2 to 11 structural variants. ... 

Tonk, L. et al.. The microcystin composition of the cyanobacterium Planktothrix agardhii changes toward a more toxic variant with increasing light intensity, Appl. Environ. Microbiol, 71, 5177, 2005. 

EngeUte, C.J., Lawton, L.A., and Jaspars, M., Elevated microcystin and nodularin levels in cyanobacteria growing in spent medium of Planktothrix agardhii. Arch. HydrobioL, 158, 541, 2003. 

Teubner, K. et al.. Alternative blooming of Aphanizomenon flos-aquae ox Planktothrix agardhii induced by the timing of the critical iutrogen phosphorus ratio in hypertrophic riverine lakes, Arch. Hydrobiol. Spec. Issues Advanc. Limnol, 54, 325, 1999. 

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