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A closer look into the microbiome of microalgal cultures

Although bacteria are commonly co-occurring in microalgal cultivation and production systems, little is known about their community structure and how it might be affected by specific microalgal groups or growth conditions. A better understanding about the underlying factors that determine the growth...

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Autores principales: Steinrücken, Pia, Jackson, Steve, Müller, Oliver, Puntervoll, Pål, Kleinegris, Dorinde M. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9908576/
https://www.ncbi.nlm.nih.gov/pubmed/36778846
http://dx.doi.org/10.3389/fmicb.2023.1108018
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author Steinrücken, Pia
Jackson, Steve
Müller, Oliver
Puntervoll, Pål
Kleinegris, Dorinde M. M.
author_facet Steinrücken, Pia
Jackson, Steve
Müller, Oliver
Puntervoll, Pål
Kleinegris, Dorinde M. M.
author_sort Steinrücken, Pia
collection PubMed
description Although bacteria are commonly co-occurring in microalgal cultivation and production systems, little is known about their community structure and how it might be affected by specific microalgal groups or growth conditions. A better understanding about the underlying factors that determine the growth of specific bacterial populations is not only important for optimizing microalgal production processes, but also in the context of product quality when the algal biomass is to be used for future food or feed. We analyzed the bacterial community composition associated with nine microalgal strains in stock culture, maintained in two different growth media, to explore how specific taxonomic microalgal groups, microalgal origin, or the growth medium affect the bacterial community composition. Furthermore, we monitored the bacterial community composition for three Phaeodactylum strains during batch cultivation in bubble columns to examine if the bacterial composition alters during cultivation. Our results reveal that different microalgal genera, kept at the same cultivation conditions over many years, displayed separate and unique bacterial communities, and that different strains of the same genus had very similar bacterial community compositions, despite originating from different habitats. However, when maintained in a different growth medium, the bacterial composition changed for some. During batch cultivation, the bacterial community structure remained relatively stable for each Phaeodactylum strain. This indicates that microalgae seem to impact the development of the associated bacterial communities and that different microalgal genera could create distinct conditions that select for dominance of specific bacteria. However, other factors such as the composition of growth medium also affect the formation of the bacterial community structure.
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spelling pubmed-99085762023-02-10 A closer look into the microbiome of microalgal cultures Steinrücken, Pia Jackson, Steve Müller, Oliver Puntervoll, Pål Kleinegris, Dorinde M. M. Front Microbiol Microbiology Although bacteria are commonly co-occurring in microalgal cultivation and production systems, little is known about their community structure and how it might be affected by specific microalgal groups or growth conditions. A better understanding about the underlying factors that determine the growth of specific bacterial populations is not only important for optimizing microalgal production processes, but also in the context of product quality when the algal biomass is to be used for future food or feed. We analyzed the bacterial community composition associated with nine microalgal strains in stock culture, maintained in two different growth media, to explore how specific taxonomic microalgal groups, microalgal origin, or the growth medium affect the bacterial community composition. Furthermore, we monitored the bacterial community composition for three Phaeodactylum strains during batch cultivation in bubble columns to examine if the bacterial composition alters during cultivation. Our results reveal that different microalgal genera, kept at the same cultivation conditions over many years, displayed separate and unique bacterial communities, and that different strains of the same genus had very similar bacterial community compositions, despite originating from different habitats. However, when maintained in a different growth medium, the bacterial composition changed for some. During batch cultivation, the bacterial community structure remained relatively stable for each Phaeodactylum strain. This indicates that microalgae seem to impact the development of the associated bacterial communities and that different microalgal genera could create distinct conditions that select for dominance of specific bacteria. However, other factors such as the composition of growth medium also affect the formation of the bacterial community structure. Frontiers Media S.A. 2023-01-26 /pmc/articles/PMC9908576/ /pubmed/36778846 http://dx.doi.org/10.3389/fmicb.2023.1108018 Text en Copyright © 2023 Steinrücken, Jackson, Müller, Puntervoll and Kleinegris. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Steinrücken, Pia
Jackson, Steve
Müller, Oliver
Puntervoll, Pål
Kleinegris, Dorinde M. M.
A closer look into the microbiome of microalgal cultures
title A closer look into the microbiome of microalgal cultures
title_full A closer look into the microbiome of microalgal cultures
title_fullStr A closer look into the microbiome of microalgal cultures
title_full_unstemmed A closer look into the microbiome of microalgal cultures
title_short A closer look into the microbiome of microalgal cultures
title_sort closer look into the microbiome of microalgal cultures
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9908576/
https://www.ncbi.nlm.nih.gov/pubmed/36778846
http://dx.doi.org/10.3389/fmicb.2023.1108018
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