Abstract:
:The present study evaluates an optical bioassay based on green photosynthetic microalgae as a promising alternative for monitoring of relevant seawater pollutants. Photosystem II fluorescence parameters from several microalgae species were examined in the presence of three common marine pesticides that act as photosynthesis inhibitors. The three pollutants were detected within 10 min in concentrations between ng/L-μg/L. The different algae species showed slightly diverse pesticide sensitivities, being Chlorella mirabilis the most sensitive one. Potential interferences due to oil-spill pollutants were discarded. The lipid content was characterized to identify microorganisms with suitable mechanisms that could facilitate stress acclimatization. C. mirabilis presented elevated content of unsaturated lipids, showing a promising potential for biosensing in saline stress conditions. The optimized microalgae-based bioassay was preliminarily incorporated into a marine buoy for autonomous pre-screening of pesticides in coastal areas, demonstrating its suitability for real-time monitoring of marine water and quantitative evaluation of total biotoxicity.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Moro L,Pezzotti G,Turemis M,Sanchís J,Farré M,Denaro R,Giacobbe MG,Crisafi F,Giardi MTdoi
10.1016/j.marpolbul.2018.02.036subject
Has Abstractpub_date
2018-04-01 00:00:00pages
212-221issue
1eissn
0025-326Xissn
1879-3363pii
S0025-326X(18)30124-3journal_volume
129pub_type
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journal_title:Marine pollution bulletin
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journal_title:Marine pollution bulletin
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journal_title:Marine pollution bulletin
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journal_title:Marine pollution bulletin
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