Russo, Ennio ORCID: 0000-0002-7329-3559, D'Ippolito, Giuliana, Fontana, Angelo ORCID: 0000-0002-5453-461X, Sarno, Diana, D'Alelio, Domenico ORCID: 0000-0002-2189-503X, Busseni, Greta, Ianora, Adrianna, von Elert, Eric and Carotenuto, Ylenia ORCID: 0000-0002-7188-9279 (2020). Density-dependent oxylipin production in natural diatom communities: possible implications for plankton dynamics. ISME J., 14 (1). S. 164 - 178. LONDON: NATURE PUBLISHING GROUP. ISSN 1751-7370

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Abstract

Oxylipins are important signal transduction lipoxygenase-derived products of fatty acids that regulate a variety of physiological and pathological processes in plants and animals. In marine diatoms, these molecules can be highly bioactive, impacting zooplankton grazers, bacteria and other phytoplankton. However, the ultimate cause for oxylipin production in diatoms is still poorly understood, from an evolutionary perspective. Here we analysed production of particulate linear oxygenated fatty acids (LOFAs, previously named non-volatile oxylipins) from natural phytoplankton collected weekly for 1 year. We demonstrate for the first time that diatoms are the main LOFA producers in natural phytoplankton assemblages. Interestingly, LOFA-per-cell production decreased with increasing diatom density and was not due to major changes in diatom community composition. An inverse relation was confirmed at a global scale by analysing diatom lipoxygenase unigenes and metagenomes from Tara Oceans datasets. A network analysis suggested that different LOFAs could contribute to modulate co-variations of different diatom taxa. Overall, we offer new insights in diatom chemical ecology, possibly explaining the evolution of oxylipin synthesis in diatoms.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Russo, EnnioUNSPECIFIEDorcid.org/0000-0002-7329-3559UNSPECIFIED
D'Ippolito, GiulianaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fontana, AngeloUNSPECIFIEDorcid.org/0000-0002-5453-461XUNSPECIFIED
Sarno, DianaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
D'Alelio, DomenicoUNSPECIFIEDorcid.org/0000-0002-2189-503XUNSPECIFIED
Busseni, GretaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ianora, AdriannaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
von Elert, EricUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Carotenuto, YleniaUNSPECIFIEDorcid.org/0000-0002-7188-9279UNSPECIFIED
URN: urn:nbn:de:hbz:38-352610
DOI: 10.1038/s41396-019-0518-5
Journal or Publication Title: ISME J.
Volume: 14
Number: 1
Page Range: S. 164 - 178
Date: 2020
Publisher: NATURE PUBLISHING GROUP
Place of Publication: LONDON
ISSN: 1751-7370
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
POLYUNSATURATED ALDEHYDES; REPRODUCTIVE SUCCESS; GROWTH-INHIBITION; CHEMICAL DEFENSE; MARINE DIATOMS; BLOOM; PHYTOPLANKTON; BIOSYNTHESIS; METABOLISM; PLASTICITYMultiple languages
Ecology; MicrobiologyMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/35261

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