Identification of a Bacillus thuringiensis Q1 compound with algicidal activity

Qiao, Jian; Zhang, Chenglin

doi:10.1016/j.heliyon.2023.e17649

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…Another bacterium, Alcaligenes denitrificans , through a direct cell–cell interaction, causes cell lysis in the species of cyanobacteria M. aeruginosa , M. viridis and M. wesenbergii , and has a highly specific effect since it does not act against Chlorophyceae species [ 58 ]. Further, the Bacillus thuringiensis Q1 strain secretes a purine-derived compound, 2-[(2-Aceramido-6-oxo-6,9-dihydro-1H-purin-9-yl)methoxy], which has a negative effect on M. aeruginosa and Anabaena flos-aquae by inhibiting chloroplast formation [ 59 ]. Some other examples are listed, such as the bacterium Deinococcus xianganensis Y35 having an algicide effect on Alexandrium tamarense and the isolated compound identified as deinoxanthin [ 60 ], and Pseudoalteromonas sp.…”

Section: Discussionmentioning

confidence: 99%

Identification of a Shewanella halifaxensis Strain with Algicidal Effects on Red Tide Dinoflagellate Prorocentrum triestinum in Culture

Cruz-Balladares,

Avalos,

Vera-Villalobos

et al. 2023

Marine Drugs

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The dinoflagellate Prorocentrum triestinum forms high biomass blooms that discolor the water (red tides), which may pose a serious threat to marine fauna and aquaculture exploitations. In this study, the algicidal effect of a bacterial strain (0YLH) belonging to the genus Shewanella was identified and evaluated against P. triestinum. The algicidal effects on the dinoflagellate were observed when P. triestinum was exposed to cell-free supernatant (CFS) from stationary-phase cultures of the 0YLH strain. After 24 h exposure, a remarkable reduction in the photosynthetic efficiency of P. triestinum was achieved (55.9%), suggesting the presence of extracellular bioactive compounds produced by the bacteria with algicidal activity. Furthermore, the CFS exhibited stability and maintained its activity across a wide range of temperatures (20–120 °C) and pH values (3–11). These findings highlight the algicidal potential of the bacterium Shewanella halifaxensis 0YLH as a promising tool for the environmentally friendly biological control of P. triestinum blooms.

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Section: Discussionmentioning

confidence: 99%