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Cyanobacterial exopolymer properties differentiate microbial carbonate fabrics

Although environmental changes and evolution of life are potentially recorded via microbial carbonates, including laminated stromatolites and clotted thrombolites, factors controlling their fabric are still a matter of controversy. Herein, we report that the exopolymer properties of different cyanob...

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Autores principales: Shiraishi, Fumito, Hanzawa, Yusaku, Okumura, Tomoyo, Tomioka, Naotaka, Kodama, Yu, Suga, Hiroki, Takahashi, Yoshio, Kano, Akihiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5603507/
https://www.ncbi.nlm.nih.gov/pubmed/28924251
http://dx.doi.org/10.1038/s41598-017-12303-9
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author Shiraishi, Fumito
Hanzawa, Yusaku
Okumura, Tomoyo
Tomioka, Naotaka
Kodama, Yu
Suga, Hiroki
Takahashi, Yoshio
Kano, Akihiro
author_facet Shiraishi, Fumito
Hanzawa, Yusaku
Okumura, Tomoyo
Tomioka, Naotaka
Kodama, Yu
Suga, Hiroki
Takahashi, Yoshio
Kano, Akihiro
author_sort Shiraishi, Fumito
collection PubMed
description Although environmental changes and evolution of life are potentially recorded via microbial carbonates, including laminated stromatolites and clotted thrombolites, factors controlling their fabric are still a matter of controversy. Herein, we report that the exopolymer properties of different cyanobacterial taxa primarily control the microbial carbonates fabrics in modern examples. This study shows that the calcite encrustation of filamentous Phormidium sp. secreting acidic exopolymers forms the laminated fabric of stromatolites, whereas the encrustation of coccoid Coelosphaeriopsis sp. secreting acidic exopolymers and poor calcification of filamentous Leptolyngbya sp. secreting non-acidic exopolymers form peloids and fenestral structures, respectively, i.e. the clotted fabric of thrombolites. Based on these findings, we suggest that the rise and decline of cyanobacteria possessing different exopolymer properties caused the expansion of thrombolites around the Proterozoic/Cambrian boundary.
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spelling pubmed-56035072017-09-20 Cyanobacterial exopolymer properties differentiate microbial carbonate fabrics Shiraishi, Fumito Hanzawa, Yusaku Okumura, Tomoyo Tomioka, Naotaka Kodama, Yu Suga, Hiroki Takahashi, Yoshio Kano, Akihiro Sci Rep Article Although environmental changes and evolution of life are potentially recorded via microbial carbonates, including laminated stromatolites and clotted thrombolites, factors controlling their fabric are still a matter of controversy. Herein, we report that the exopolymer properties of different cyanobacterial taxa primarily control the microbial carbonates fabrics in modern examples. This study shows that the calcite encrustation of filamentous Phormidium sp. secreting acidic exopolymers forms the laminated fabric of stromatolites, whereas the encrustation of coccoid Coelosphaeriopsis sp. secreting acidic exopolymers and poor calcification of filamentous Leptolyngbya sp. secreting non-acidic exopolymers form peloids and fenestral structures, respectively, i.e. the clotted fabric of thrombolites. Based on these findings, we suggest that the rise and decline of cyanobacteria possessing different exopolymer properties caused the expansion of thrombolites around the Proterozoic/Cambrian boundary. Nature Publishing Group UK 2017-09-18 /pmc/articles/PMC5603507/ /pubmed/28924251 http://dx.doi.org/10.1038/s41598-017-12303-9 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Shiraishi, Fumito
Hanzawa, Yusaku
Okumura, Tomoyo
Tomioka, Naotaka
Kodama, Yu
Suga, Hiroki
Takahashi, Yoshio
Kano, Akihiro
Cyanobacterial exopolymer properties differentiate microbial carbonate fabrics
title Cyanobacterial exopolymer properties differentiate microbial carbonate fabrics
title_full Cyanobacterial exopolymer properties differentiate microbial carbonate fabrics
title_fullStr Cyanobacterial exopolymer properties differentiate microbial carbonate fabrics
title_full_unstemmed Cyanobacterial exopolymer properties differentiate microbial carbonate fabrics
title_short Cyanobacterial exopolymer properties differentiate microbial carbonate fabrics
title_sort cyanobacterial exopolymer properties differentiate microbial carbonate fabrics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5603507/
https://www.ncbi.nlm.nih.gov/pubmed/28924251
http://dx.doi.org/10.1038/s41598-017-12303-9
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