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- W2988595280 abstract "Harmful algal blooms (HABs) occur all over the world, producing severely negative effects on human life as well as on marine ecosystems. The algicidal compound, prodigiosin, secreted by algicidal bacteria Hahella sp. KA22 can lyse the harmful alga Heterosigma akashiwo. This study is aimed to investigate the algicidal mechanism of prodigiosin against H. akashiwo by detecting physiological and morphological responses of H. akashiwo to presence of prodigiosin. The results indicated that prodigiosin showed strong algicidal effects on H. akashiwo at the concentration of 3 μg/mL. Chlorophyll a and protein levels of the microalgae decreased significantly while malonaldehyde levels increased at this concentration. Contents of ascorbic acid and activities of superoxide dismutase and peroxidase increased fast with the quick decrease of the reactive oxygen species (ROS). For the 3 μg/mL prodigiosin treatment group, transcription of genes related to photosynthesis and respiration were significantly inhibited at 12 h while respiration related genes increased at 24 h. Collectively, the results indicated that prodigiosin could kill the microalgae by inducing ROS overproduction which could destroy the cell integrity and change the antioxidant system levels and functional gene expression. Our results demonstrated that prodigiosin is an effective algicide for the control of harmful algae." @default.
- W2988595280 created "2019-11-22" @default.
- W2988595280 creator A5010248936 @default.
- W2988595280 creator A5034899868 @default.
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- W2988595280 date "2020-03-01" @default.
- W2988595280 modified "2023-10-17" @default.
- W2988595280 title "Physiological response and morphological changes of Heterosigma akashiwo to an algicidal compound prodigiosin" @default.
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- W2988595280 doi "https://doi.org/10.1016/j.jhazmat.2019.121530" @default.
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