Algicidal Bacteria: A Review of Current Knowledge and Applications to Control Harmful Algal Blooms

Coyne, Kathryn J.; Wang, Yanfei; Johnson, Glen D.

doi:10.3389/fmicb.2022.871177

Cited by 74 publications

(69 citation statements)

References 247 publications

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“…Our findings showed that the algicidal compounds of LD-B6 had freeze-thaw stability, were heat tolerant, and were stable under alkaline conditions, while acidic conditions had a significant effect on the algicidal activity ( Figure 6 ). As described in reviews, algicidal bacteria can produce several kinds of algicidal substances, including ectoenzymes (e.g., serine protease and extracellular agarase), pigments (e.g., isatin and prodigiosin) ( Meyer et al, 2017 ; Wang et al, 2020 ; Coyne et al, 2022 ). Based on the thermal stability of algicidal compounds secreted by strain LD-B6, it is unlikely that this compound is a protein.…”

Section: Discussionmentioning

confidence: 99%

“…However, the implementation of chemical and physical methods for the management of HABs is still limited due to the disadvantages of high cost, poor specificity, and secondary pollution ( Yu et al, 2017 ). Biological methods such as the use of algicidal bacteria have been widely studied in the control of HABs because of their advantages of safety and efficiency ( Wang et al, 2020 ; Coyne et al, 2022 ). Studies have shown that about 50% of the algicidal bacteria belong to the Cytophaga/Flavobacterium/Bacteroidetes (CFB) group, and about 45% belong to Gammaproteobacteria.…”

Section: Introductionmentioning

confidence: 99%

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Isolation and characterization of a high-efficiency algicidal bacterium Pseudoalteromonas sp. LD-B6 against the harmful dinoflagellate Noctiluca scintillans

Yin¹,

Xu²,

Chen³

et al. 2022

Front. Microbiol.

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The dinoflagellate Noctiluca scintillans is a harmful algal species that is globally distributed and poses a certain threat to marine ecosystems. Recent research has shown that the application of algicidal bacteria is a promising method to prevent and control such harmful algal blooms (HABs), given its advantages of safety and efficiency. In this study, a strain of algicidal bacterium LD-B6 with high efficiency against N. scintillans was isolated from the coastal waters of Lianyungang, China. 16S rDNA sequence analysis showed that the strain LD-B6 belongs to the genus Pseudoalteromonas. Furthermore, the algicidal effect of LD-B6 on N. scintillans was investigated. The results showed that strain LD-B6 exerted strong algicidal activity against N. scintillans. After 12 h of bacterial culture addition to algal cultures at a 2% final volume rate, the algicidal activity reached 90.5%, and the algicidal activity of LD-B6 was influenced by the density of N. scintillans. In addition, the algicidal bacterium LD-B6 was found to indirectly lyse algal cells by secreting extracellular compounds. These algicidal compounds were stable, indicating that they are not proteins. Importantly, strain LD-B6 was broadly general, showing varying degrees of lysing effects against five of the six algal species tested. On the basis of the described studies above, the algicidal powder was also initially developed. In summary, the isolated bacterial strain LD-B6 shows the potent algicidal capability to serve as a candidate algicidal bacterium against N. scintillans blooms.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Isolation and characterization of a high-efficiency algicidal bacterium Pseudoalteromonas sp. LD-B6 against the harmful dinoflagellate Noctiluca scintillans

Yin¹,

Xu²,

Chen³

et al. 2022

Front. Microbiol.

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“…In aqueous ecosystems, bacteria are capable of controlling massive growth of algae and cyanobacteria through physical association or the production of algicidal compounds (Coyne et al 2022 ). The aquatic bacterium Streptomyces neyagawaensis has been shown to be capable of suppressing the growth of cyanobacteria (such as Microcystis aeruginosa ) and of a wide range of algae, including Chlorella spp.…”

Section: Microbial Antagonistsmentioning

confidence: 99%

“…The bacterium Phaeobacter inhibens can promote growth of the marine alga Emiliania huxleyi at an early stage (mutualistic interaction) but then kill it at a later stage (antagonistic interaction). Bacteria isolated from diatoms of the genus Pseudo-nitzschia display algicidal activity, and a few bacteria exhibit lytic activity against both cyanobacteria and microcystins (Coyne et al 2022 ).…”

Section: Microbial Antagonistsmentioning

confidence: 99%

Unraveling disparate roles of organisms, from plants to bacteria, and viruses on built cultural heritage

Sanmartín

Bosch-Roig

Pangallo

et al. 2023

Appl Microbiol Biotechnol

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The different organisms, ranging from plants to bacteria, and viruses that dwell on built cultural heritage can be passive or active participants in conservation processes. For the active participants, particular attention is generally given to organisms that play a positive role in bioprotection, bioprecipitation, bioconsolidation, bioremediation, biocleaning, and biological control and to those involved in providing ecosystem services, such as reducing temperature, pollution, and noise in urban areas. The organisms can also evolve or mutate in response to changes, becoming tolerant and resistant to biocidal treatments or acquiring certain capacities, such as water repellency or resistance to ultraviolet radiation. Our understanding of the capacities and roles of these active organisms is constantly evolving as bioprotection/biodeterioration, and biotreatment studies are conducted and new techniques for characterizing species are developed. This brief review article aims to shed light on interesting research that has been abandoned as well as on recent (some ongoing) studies opening up new scopes of research involving a wide variety of organisms and viruses, which are likely to receive more attention in the coming years. Key points • Organisms and viruses can be active or passive players in heritage conservation • Biotreatment and ecosystem service studies involving organisms and viruses are shown • Green deal, health, ecosystem services, and global change may shape future research

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“…H 2 O 2 (17)(18)(19). On the other hand, they may compete for limited inorganic nutrients (20) and produce algicidal compounds (for a recent review see (21)).…”

Section: Introductionmentioning

confidence: 99%

Species-specific exudates from marine phytoplankton drive microbial community composition

Briand

Lassudrie

Noël

et al. 2023

Preprint

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Phytoplankton-bacteria interactions are governed by the transformation of algal-derived organic matter, exchange of metabolites and infochemicals. However, the assembly of the bacterial community within the phycosphere is not well understood. In this study, we performed experiments to tease apart the role of species-specific exometabolites, bacterial/bacterial interactions and algal/bacterial interactions in shaping bacterial community within the phycophere. Twelve bacterial isolates, representative of the main members of the phycosphere microbiome were selected and exposed to phytoplankton extracellular fractions (PEF) from Alexandrium minutum, Prymnesium parvum and Tisochrysis lutea. While all bacterial isolates were able to grow individually on the different PEF, the bacterial community analysis indicated that some species were selected and others were not when grown in a synthetic community (SynCom). In addition, we compared the SynCom assembly in the absence or presence of the harmful algal cells. If PEF, irrespective of the producing alga, allowed the growth of copiotrophic strains, we found that exometabolites of the two different species led to distinct SynCom composition and that the presence of algal cells also influenced the bacterial assemblage. Overall, our results support the assertion that algal exudates and the presence of algae are the main factors driving the composition of the bacterial community.

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Algicidal Bacteria: A Review of Current Knowledge and Applications to Control Harmful Algal Blooms

Cited by 74 publications

References 247 publications

Isolation and characterization of a high-efficiency algicidal bacterium Pseudoalteromonas sp. LD-B6 against the harmful dinoflagellate Noctiluca scintillans

Isolation and characterization of a high-efficiency algicidal bacterium Pseudoalteromonas sp. LD-B6 against the harmful dinoflagellate Noctiluca scintillans

Unraveling disparate roles of organisms, from plants to bacteria, and viruses on built cultural heritage

Species-specific exudates from marine phytoplankton drive microbial community composition

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