Next Article in Journal
Low Long Terminal Repeat (LTR)-Retrotransposon Expression in Leaves of the Marine Phanerogam Posidonia Oceanica L.
Previous Article in Journal
Biogenic Metal Nanoparticles: A New Approach to Detect Life on Mars?
Open AccessArticle

Diatom-Derived Polyunsaturated Aldehydes Are Unlikely to Influence the Microbiota Composition of Laboratory-Cultured Diatoms

1
School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
2
Scottish Association for Marine Science, Scottish Marine Institute, Oban PA37 1QA, UK
*
Author to whom correspondence should be addressed.
Life 2020, 10(3), 29; https://doi.org/10.3390/life10030029
Received: 11 January 2020 / Revised: 18 February 2020 / Accepted: 20 March 2020 / Published: 24 March 2020
(This article belongs to the Section Microbiology and Engineering)
Diatom-derived oxylipins, including polyunsaturated aldehydes (PUA), are considered to have infochemical, allelochemical and bacteriostatic properties, with plausible roles as grazing deterrents and regulators of inter- and intraspecific competition. However, the extent and mechanisms of how PUA influence diatom–bacteria interactions remain unresolved. In this study, impacts on the diversity of the associated bacterial communities (microbiota) of two contrasting Skeletonema marinoi strains (a PUA and a non-PUA producer) were investigated under three nitrate conditions in batch culture. Further, the response of the culture microbiota was studied when spiked with PUA at ecologically relevant concentrations (86nM octadienal and 290nM heptadienal). Of the 741 identified OTUs, Proteobacteria was the most abundant phylum (62.10%), followed by Bacteroidetes (12.33%) and Firmicutes (6.11%). Escherichia/Shigella were the most abundant genera for all treatments. Similar communities were present in both spiked and non-spiked cultures suggesting they can tolerate PUA exposure at realistic concentrations. This study suggests that PUA are not major drivers of diatom–bacteria interactions in laboratory cultures. View Full-Text
Keywords: bacterioplankton interactions; Skeletonema marinoi; polyunsaturated aldehydes; nitrogen alterations; algae microbiome bacterioplankton interactions; Skeletonema marinoi; polyunsaturated aldehydes; nitrogen alterations; algae microbiome
Show Figures

Figure 1

MDPI and ACS Style

Eastabrook, C.L.; Whitworth, P.; Robinson, G.; Caldwell, G.S. Diatom-Derived Polyunsaturated Aldehydes Are Unlikely to Influence the Microbiota Composition of Laboratory-Cultured Diatoms. Life 2020, 10, 29.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop