First record of allelopathic activity of the picocyanobacterium Synechococcus sp. on a natural plankton community

Sylwia Śliwińska-Wilczewska , Jakub Maculewicz , Julia Tuszer , Kinga Dobosz , Dagmara Kulasa , Adam Latała


Picocyanobacteria of the genera Synechococcus have been recognized in the last few years as important components of the phytoplankton in most of the world's oceans. Despite the ecological importance of marine Synechococcus, very little is known about their allelopathic effects on phytoplankton organisms. In this study, the influence of allelopathic compounds on the growth, expressed as chlorophyll a (Chl a) and chlorophyll c (Chl c), total abundance and structure of phytoplankton community was investigated by single and multiple addition of cell-free filtrate of picocyanobacterium Synechococcus sp. Our results indicated that picocyanobacterium Synechococcus sp. filtrate had generally an inhibitory effect on all phytoplankton community except the cyanobacteria N. spumigena and Gloeocapsa sp., which increased in the single and multiple filtrate treatment. This study also showed that the degree of inhibition was different for each species, causing a change in the phytoplankton abundance and dominance during the experiment. It was found that diatoms of the genera Navicula, Chaetoceros, Amphora, Coscinodiscus, Grammatophora and Nitzschia were the most affected organisms. This work demonstrated that the allelopathic activity exhibited by the picocyanobacterium Synechococcus sp. is probably one of the major competitive strategies affecting some of the coexisting phytoplankton species in aquatic ecosystems.
Author Sylwia Śliwińska-Wilczewska (FOG / IO / DMEF)
Sylwia Śliwińska-Wilczewska,,
- Division of Marine Ecosystems Functioning
, Jakub Maculewicz (FOG / IO)
Jakub Maculewicz,,
- Institute of Oceanography
, Julia Tuszer (FOG / IO)
Julia Tuszer,,
- Institute of Oceanography
, Kinga Dobosz (FOG / IO)
Kinga Dobosz,,
- Institute of Oceanography
, Dagmara Kulasa (FOG / IO)
Dagmara Kulasa,,
- Institute of Oceanography
, Adam Latała (FOG / IO / DMEF)
Adam Latała,,
- Division of Marine Ecosystems Functioning
Journal seriesEcohydrology & Hydrobiology, ISSN 1642-3593, e-ISSN 2080-3397, (B 15 pkt)
Issue year2017
Publication size in sheets0.5
Keywords in Englishaquatic ecosystem, allelopathy, picocyanobacteria, plankton community, Synechococcus sp.
Languageen angielski
Score (nominal)15
ScoreMinisterial score = 15.0, 26-02-2018, ArticleFromJournal
Ministerial score (2013-2016) = 15.0, 26-02-2018, ArticleFromJournal
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