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Internal microbial zonation during the massive growth of marimo, a lake ball of Aegagropila linnaei in Lake Akan

Marimo (lake ball) is an uncommon ball-like aggregation of the green alga, Aegagropila linnaei. Although A. linnaei is distributed in fresh and brackish waters in the northern hemisphere, marimo colonies are found only in particular habitats. Here, we report the bacterial communities inside various...

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Autores principales: Nakai, Ryosuke, Wakana, Isamu, Niki, Hironori
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8253969/
https://www.ncbi.nlm.nih.gov/pubmed/34258554
http://dx.doi.org/10.1016/j.isci.2021.102720
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author Nakai, Ryosuke
Wakana, Isamu
Niki, Hironori
author_facet Nakai, Ryosuke
Wakana, Isamu
Niki, Hironori
author_sort Nakai, Ryosuke
collection PubMed
description Marimo (lake ball) is an uncommon ball-like aggregation of the green alga, Aegagropila linnaei. Although A. linnaei is distributed in fresh and brackish waters in the northern hemisphere, marimo colonies are found only in particular habitats. Here, we report the bacterial communities inside various sizes and aggregating structures of natural marimo collected from Lake Akan, Japan. We observed multi-layers composed of sediment particles only in the sizable radial-type marimo with >20 cm diameter and not in the tangled-type marimo. The deeper layers were enriched by Nitrospira, potential sulfur-oxidizing bacteria, and sulfate-reducing bacteria. Microorganisms of the multi-layers would form biofilms incorporating nearby sediment, which would function as microbial “seals” within large radial-type marimo. These findings provide clues to deciphering the growth of endangered marimo.
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spelling pubmed-82539692021-07-12 Internal microbial zonation during the massive growth of marimo, a lake ball of Aegagropila linnaei in Lake Akan Nakai, Ryosuke Wakana, Isamu Niki, Hironori iScience Article Marimo (lake ball) is an uncommon ball-like aggregation of the green alga, Aegagropila linnaei. Although A. linnaei is distributed in fresh and brackish waters in the northern hemisphere, marimo colonies are found only in particular habitats. Here, we report the bacterial communities inside various sizes and aggregating structures of natural marimo collected from Lake Akan, Japan. We observed multi-layers composed of sediment particles only in the sizable radial-type marimo with >20 cm diameter and not in the tangled-type marimo. The deeper layers were enriched by Nitrospira, potential sulfur-oxidizing bacteria, and sulfate-reducing bacteria. Microorganisms of the multi-layers would form biofilms incorporating nearby sediment, which would function as microbial “seals” within large radial-type marimo. These findings provide clues to deciphering the growth of endangered marimo. Elsevier 2021-06-12 /pmc/articles/PMC8253969/ /pubmed/34258554 http://dx.doi.org/10.1016/j.isci.2021.102720 Text en © 2021 The Author(s) https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Article
Nakai, Ryosuke
Wakana, Isamu
Niki, Hironori
Internal microbial zonation during the massive growth of marimo, a lake ball of Aegagropila linnaei in Lake Akan
title Internal microbial zonation during the massive growth of marimo, a lake ball of Aegagropila linnaei in Lake Akan
title_full Internal microbial zonation during the massive growth of marimo, a lake ball of Aegagropila linnaei in Lake Akan
title_fullStr Internal microbial zonation during the massive growth of marimo, a lake ball of Aegagropila linnaei in Lake Akan
title_full_unstemmed Internal microbial zonation during the massive growth of marimo, a lake ball of Aegagropila linnaei in Lake Akan
title_short Internal microbial zonation during the massive growth of marimo, a lake ball of Aegagropila linnaei in Lake Akan
title_sort internal microbial zonation during the massive growth of marimo, a lake ball of aegagropila linnaei in lake akan
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8253969/
https://www.ncbi.nlm.nih.gov/pubmed/34258554
http://dx.doi.org/10.1016/j.isci.2021.102720
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