The ecological risks of hydrogen peroxide as a cyanocide: its effect on the community structure of bacterioplankton

The Efficacy of Hydrogen Peroxide in Mitigating Cyanobacterial Blooms and Altering Microbial Communities across Four Lakes in NY, USA

“…H 2 O 2 has been shown to be effective in controlling Planktothrix in lakes and ponds at similar concentrations to those used here [11,30,31]. This experiment where Planktothrix declined by nearly 80% in relative abundance was also the only instance when the sequenced relative abundance of Microcystis among the cyanobacteria increased following treatment with H 2 O 2 , despite its absolute decline, supporting the hypothesis that Planktothrix is more sensitive to H 2 O 2 than Microcystis [30,32], and in assessing all available literature [11,31,32], may be the most sensitive of the cyanobacterial genera to H 2 O 2.…”

“…The findings presented here contrast slightly with Lin et al (2018) who similarly performed mesocosm experiments and analyzed the 16S rDNA for bacterial community shifts in response to 8mg H 2 O 2 L −1 . While Firmicutes increased in sequenced relative abundance in that study, Proteobacteria and Bacteroidetes were reduced [32], whereas these two groups increased or were generally unchanged in the present study. Those results, however, emanated from a single experiment that was performed in winter in Dianchi Lake, China, where the temperature was 10 • C [32].…”

“…While Firmicutes increased in sequenced relative abundance in that study, Proteobacteria and Bacteroidetes were reduced [32], whereas these two groups increased or were generally unchanged in the present study. Those results, however, emanated from a single experiment that was performed in winter in Dianchi Lake, China, where the temperature was 10 • C [32]. Moreover, changes in relative abundance can be complex as changes in relative abundance of any one group is also dependent on the response of other groups.…”

Cyanobacterial Harmful Algal Blooms in Aquatic Ecosystems: A Comprehensive Outlook on Current and Emerging Mitigation and Control Approaches

“…These have included the impact on bacteria, zooplankton, and phytoplankton, particularly under H 2 O 2 concentration above 4 mg/L, which is the threshold lethal dose for Microcystis sp. [ 65 , 73 , 75 , 91 , 92 , 93 , 94 ]. Though there has been some variability between the reports, likely reflecting local biotic and abiotic conditions, the overall conclusion was that the H 2 O 2 dose required to significantly lower the population of toxic cyanobacteria also affects other organisms (see [ 84 ] in this special issue).…”

The response of Microcystis aeruginosa strain MGK to a single or two consecutive H2O2 applications

“…One of those rests on the relatively higher sensitivity of cyanobacteria to oxidative stress, compared with green algae (Tichy and Vermaas, ; Helman et al ., ; Murik and Kaplan, ). This has been attributed to the strong impact of H 2 O 2 on various aspects of Microcystis growth including circadian rhythms, enzyme activity, programmed cell death and many others (see (Nishiyama et al ., ; Ross et al ., ; Drabkova et al ., ; Barrington and Ghadouani, ; Zilliges et al ., ; Ding et al ., ; Qian et al ., ; Fan et al ., ; Lurling et al ., ; Cobo, ; Gao et al ., ; Huo et al ., ; Wang et al ., ; Weenink et al ., ; Chen et al ., ; Matthijs et al ., ; Liu et al ., ; Lin et al ., ; Schuurmans et al ., ; Wang et al ., ) and references therein). In a recent study, Schuurmans and colleagues (Schuurmans et al ., ) showed that toxic Microcystis strains are more sensitive to H 2 O 2 than non‐toxic cells (including a mutant unable to produce microcystins) and that rapid decomposition of H 2 O 2 is essential for Microcystis survival.…”