The predation paradox: Synergistic and antagonistic interactions between grazing by crustacean predator and infection by cyanophages promotes bloom formation in filamentous cyanobacteria

Šulčius, Sigitas; Slavuckytė, Kristina; Paškauskas, Ričardas

doi:10.1002/lno.10559

Cited by 8 publications

(7 citation statements)

References 54 publications

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“…The earliest descriptions of cyanophages affecting species within Aphanizomenon also appeared in the literature in the early 1970s [119,120]; however, clear investigations into cyanophages with laboratory propagation and evaluation became more prevalent in the last decade. To date, there have been three studies on cyanophage infectivity in the genera Aphanizomenon [121][122][123]; each of these explored the infectivity of Vb_AphaS-CL131 (hereafter referred to as CL131) in A. flos-aquae. Šulčius et al [121] fully characterized cyanophage CL131, detailing it as a cyanosiphovirus with infectivity against A. flos-aquae isolated from the Curonian Lagoon (Lithuania).…”

Section: Aphanizomenonmentioning

confidence: 99%

“…In a subsequent study, Šulčius et al [122] investigated the impact of natural grazing pressures on CL131 infectivity in A. flos-aquae from the Curonian Lagoon. Daphnia magna was introduced to uninfected and infected A. flos-aquae cultures and incubated for 12 days.…”

Section: Aphanizomenonmentioning

confidence: 99%

“…Daphnia magna was introduced to uninfected and infected A. flos-aquae cultures and incubated for 12 days. Šulčius et al [122] reported that lysis-mediated and grazing-enhanced removal of shorter algal filaments resulted in a shift to longer filaments of A. flos-aquae more resistant to viral and grazer-related pressures. Additionally, the presence of grazers coincided with filament aggregation, which was shown to be widely insensitive to both CL131 and grazers.…”

Section: Aphanizomenonmentioning

confidence: 99%

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A Review of Cyanophage–Host Relationships: Highlighting Cyanophages as a Potential Cyanobacteria Control Strategy

Grasso¹,

Pokrzywinski

Waechter

et al. 2022

Toxins

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Harmful algal blooms (HABs) are naturally occurring phenomena, and cyanobacteria are the most commonly occurring HABs in freshwater systems. Cyanobacteria HABs (cyanoHABs) negatively affect ecosystems and drinking water resources through the production of potent toxins. Furthermore, the frequency, duration, and distribution of cyanoHABs are increasing, and conditions that favor cyanobacteria growth are predicted to increase in the coming years. Current methods for mitigating cyanoHABs are generally short-lived and resource-intensive, and have negative impacts on non-target species. Cyanophages (viruses that specifically target cyanobacteria) have the potential to provide a highly specific control strategy with minimal impacts on non-target species and propagation in the environment. A detailed review (primarily up to 2020) of cyanophage lifecycle, diversity, and factors influencing infectivity is provided in this paper, along with a discussion of cyanophage and host cyanobacteria relationships for seven prominent cyanoHAB-forming genera in North America, including: Synechococcus, Microcystis, Dolichospermum, Aphanizomenon, Cylindrospermopsis, Planktothrix, and Lyngbya. Lastly, factors affecting the potential application of cyanophages as a cyanoHAB control strategy are discussed, including efficacy considerations, optimization, and scalability for large-scale applications.

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Section: Aphanizomenonmentioning

confidence: 99%

Section: Aphanizomenonmentioning

confidence: 99%

Section: Aphanizomenonmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Cyanophage–Host Relationships: Highlighting Cyanophages as a Potential Cyanobacteria Control Strategy

Grasso¹,

Pokrzywinski

Waechter

et al. 2022

Toxins

View full text Add to dashboard Cite

show abstract

“…The cultures of many aquatic organisms, such as fish, crustaceans, and molluscs, are not sterile; therefore, both synergistic and antagonistic interactions between the representatives of this model microcosm can be expected [Sulcius, Slavuckyte and Paskauskas 2017]. The contribution of gut microbes to the metabolism and individual toxicity of substances for various animals and humans is increasingly recognized [Li, He and Jia 2016].…”

Section: Biotic Factorsmentioning

confidence: 99%

Intraspecific Sensitivity to Toxicants – a Methodological Problem of Bioassay: Review

Olkova¹

2021

J. Ecol. Eng.

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The article discusses the scientific studies that reveal the mechanisms of intraspecific differences in responses of organisms to chemical exposure. The factors of individual sensitivity to toxicants are represented by genetic differences between individuals of the same species and genetically unconditioned factors. The genetic factors are mutations, including under-researched mitochondrial DNA mutations and genomic drift, genetic polymorphism, and gender-related differences. Age, conditions of keeping and state of organisms, seasonal variations of body functions, and biotic interactions are considered as the factors that are not related to the genetic apparatus. The article considers a number of works, in which the effects of the combined action of external factors on sensitivity of organisms in model groups are studied.

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“…flos-aquae via reduction of the filament size and due to caused changes in ratio between vegetative cells, heterocytes and akinetes, since the latter two types of A . flos - aquae cells were shown to be insensitive to cyanophage additions ( Šulčius et al, 2015a , 2017 ). Thus, this raises an intriguing question whether and to what extent cyanobacterial viruses (cyanophages) influences N 2 fixation and nitrogen transformation processes in these cyanobacteria, and, in particular, whether viral infections alter the level of gene expression (e.g., nifH ) and net incorporation of N 2 into cyanobacterial biomass.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Flow in Diazotrophic Cyanobacterium Aphanizomenon flos-aquae Is Altered by Cyanophage Infection

et al. 2020

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Viruses can significantly influence cyanobacteria population dynamics and activity, and through this the biogeochemical cycling of major nutrients. However, surprisingly little attention has been given to understand how viral infections alter the ability of diazotrophic cyanobacteria for atmospheric nitrogen fixation and its release to the environment. This study addressed the importance of cyanophages for net 15 N 2 assimilation rate, expression of nitrogenase reductase gene (nifH) and changes in nitrogen enrichment (15 N/ 14 N) in the diazotrophic cyanobacterium Aphanizomenon flosaquae during infection by the cyanophage vB_AphaS-CL131. We found that while the growth of A. flos-aquae was inhibited by cyanophage addition (decreased from 0.02 h −1 to 0.002 h −1), there were no significant differences in nitrogen fixation rates (control: 22.7 × 10 −7 nmol N heterocyte −1 ; infected: 23.9 × 10 −7 nmol N heterocyte −1) and nifH expression level (control: 0.6-1.6 transcripts heterocyte −1 ; infected: 0.7-1.1 transcripts heterocyte −1) between the infected and control A. flos-aquae cultures. This implies that cyanophage genome replication and progeny production within the vegetative cells does not interfere with the N 2 fixation reactions in the heterocytes of these cyanobacteria. However, higher 15 N enrichment at the poles of heterocytes of the infected A. flosaquae, revealed by NanoSIMS analysis indicates the accumulation of fixed nitrogen in response to cyanophage addition. This suggests reduced nitrogen transport to vegetative cells and the alterations in the flow of fixed nitrogen within the filaments. In addition, we found that cyanophage lysis resulted in a substantial release of ammonium into culture medium. Cyanophage infection seems to substantially redirect N flow from cyanobacterial biomass to the production of N storage compounds and N release.

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The predation paradox: Synergistic and antagonistic interactions between grazing by crustacean predator and infection by cyanophages promotes bloom formation in filamentous cyanobacteria

Cited by 8 publications

References 54 publications

A Review of Cyanophage–Host Relationships: Highlighting Cyanophages as a Potential Cyanobacteria Control Strategy

A Review of Cyanophage–Host Relationships: Highlighting Cyanophages as a Potential Cyanobacteria Control Strategy

Intraspecific Sensitivity to Toxicants – a Methodological Problem of Bioassay: Review

Nitrogen Flow in Diazotrophic Cyanobacterium Aphanizomenon flos-aquae Is Altered by Cyanophage Infection

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