Allelopathic activity of picocyanobacterium Synechococcus sp. on filamentous cyanobacteria

Sylwia Śliwińska-Wilczewska , Jakub Maculewicz , Aldo Barreiro Felpeto , Vitor Vasconcelos , Adam Latała

Abstract

Allelopathy of picocyanobacterium Synechococcus sp. may be involved in the formation of massive blooms and their subsequent global expansion in many aquatic ecosystems. However, the effect of the allelopathic activity of this species on filamentous cyanobacteria remains unknown. In this study, we tested the allelopathic activity of Synechococcus sp. on growth, pigment content and chlorophyll fluorescence of filamentous cyanobacteria Aphanizomenon flos-aquae, Nostoc sp., Phormidium sp. and Rivularia sp. by single and repeated addition of cell-free filtrate. Negative effects against Nostoc sp. and Phormidium sp. were amplified by repeated filtrate additions compared with single filtrate addition. A maximum reduction in growth and a maximum quantum yield of photosystem II (PSII) photochemistry (Fv/Fm) relative to controls were observed for Phormidium sp. However, the addition of picocyanobacterial filtrate stimulated the growth and Fv/Fm of A. flos-aquae. Synechococcus sp. filtrate had no allelopathic effects on the growth and Fv/Fm of Rivularia sp. Moreover, filtrates caused significant decreases in the chlorophyll a (Chl a) contents of Phormidium sp. and Rivularia sp. cells. The addition of filtrate also resulted in increased cell carotenoid (Car) content in A. flos-aquae and Nostoc sp. These results showed for the first time that picocyanobacterium Synechococcus sp. negatively and positively affected coexisting filamentous cyanobacteria.
Author Sylwia Śliwińska-Wilczewska (FOG / IO / DMEF)
Sylwia Śliwińska-Wilczewska,,
- Division of Marine Ecosystems Functioning
, Jakub Maculewicz (FOG / IO)
Jakub Maculewicz,,
- Institute of Oceanography
, Aldo Barreiro Felpeto
Aldo Barreiro Felpeto,,
-
, Vitor Vasconcelos
Vitor Vasconcelos,,
-
, Adam Latała (FOG / IO / DMEF)
Adam Latała,,
- Division of Marine Ecosystems Functioning
Journal seriesJournal of Experimental Marine Biology and Ecology, ISSN 0022-0981, (A 30 pkt)
Issue year2017
Vol496
Pages16-21
Publication size in sheets0.5
Keywords in Englishallelopathy, bloom, Chlorophyll fluorescence, growth, picocyanobacteria, pigment content
DOIDOI:10.1016/j.jembe.2017.07.008
URL https://doi.org/10.1016/j.jembe.2017.07.008
Languageen angielski
Score (nominal)30
ScoreMinisterial score = 30.0, 26-02-2018, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 26-02-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 1.937 (2) - 2016=2.31 (5)
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