Three-dimensional morphology of bacterial community developed on the index-matched materials

Abstract Herein, we demonstrate that the use of index-matching materials (IMMs) allows direct visualization of microbial cells maintained at a solid–liquid interface through confocal reflection microscopy (CRM). The refractive index mismatch induces a background reflection at the solid–liquid interf...

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Autores principales: Chigusa Okano, Kyosuke Takabe, Tomohiro Hirayama, Nobuhiko Nomura, Yutaka Yawata
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/e804f22cf6c148d6b94209d200fb369c
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spelling oai:doaj.org-article:e804f22cf6c148d6b94209d200fb369c2021-12-02T17:17:40ZThree-dimensional morphology of bacterial community developed on the index-matched materials10.1038/s41598-021-98943-42045-2322https://doaj.org/article/e804f22cf6c148d6b94209d200fb369c2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98943-4https://doaj.org/toc/2045-2322Abstract Herein, we demonstrate that the use of index-matching materials (IMMs) allows direct visualization of microbial cells maintained at a solid–liquid interface through confocal reflection microscopy (CRM). The refractive index mismatch induces a background reflection at the solid–liquid interface that dwarfs the reflection signals from the cells and results in low-contrast images. We found that the IMMs sufficiently suppressed the background reflection at the solid–liquid interface, facilitating the imaging of microbes at the solid surface using CRM. The use of IMMs allowed quantitative analysis of the morphology of the mesh-like structure of Pseudomonas aeruginosa biofilms formed under denitrifying conditions, which led us to propose a novel structural model of the highly porous biofilm structure. These results indicate that the use of CRM coupled with an IMM offers a unique and promising tool for probing the dynamics of biofilm formation, along with visualization of environmental organisms and newly isolated bacteria, for which transformation methods are difficult to establish.Chigusa OkanoKyosuke TakabeTomohiro HirayamaNobuhiko NomuraYutaka YawataNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Chigusa Okano
Kyosuke Takabe
Tomohiro Hirayama
Nobuhiko Nomura
Yutaka Yawata
Three-dimensional morphology of bacterial community developed on the index-matched materials
description Abstract Herein, we demonstrate that the use of index-matching materials (IMMs) allows direct visualization of microbial cells maintained at a solid–liquid interface through confocal reflection microscopy (CRM). The refractive index mismatch induces a background reflection at the solid–liquid interface that dwarfs the reflection signals from the cells and results in low-contrast images. We found that the IMMs sufficiently suppressed the background reflection at the solid–liquid interface, facilitating the imaging of microbes at the solid surface using CRM. The use of IMMs allowed quantitative analysis of the morphology of the mesh-like structure of Pseudomonas aeruginosa biofilms formed under denitrifying conditions, which led us to propose a novel structural model of the highly porous biofilm structure. These results indicate that the use of CRM coupled with an IMM offers a unique and promising tool for probing the dynamics of biofilm formation, along with visualization of environmental organisms and newly isolated bacteria, for which transformation methods are difficult to establish.
format article
author Chigusa Okano
Kyosuke Takabe
Tomohiro Hirayama
Nobuhiko Nomura
Yutaka Yawata
author_facet Chigusa Okano
Kyosuke Takabe
Tomohiro Hirayama
Nobuhiko Nomura
Yutaka Yawata
author_sort Chigusa Okano
title Three-dimensional morphology of bacterial community developed on the index-matched materials
title_short Three-dimensional morphology of bacterial community developed on the index-matched materials
title_full Three-dimensional morphology of bacterial community developed on the index-matched materials
title_fullStr Three-dimensional morphology of bacterial community developed on the index-matched materials
title_full_unstemmed Three-dimensional morphology of bacterial community developed on the index-matched materials
title_sort three-dimensional morphology of bacterial community developed on the index-matched materials
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/e804f22cf6c148d6b94209d200fb369c
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AT tomohirohirayama threedimensionalmorphologyofbacterialcommunitydevelopedontheindexmatchedmaterials
AT nobuhikonomura threedimensionalmorphologyofbacterialcommunitydevelopedontheindexmatchedmaterials
AT yutakayawata threedimensionalmorphologyofbacterialcommunitydevelopedontheindexmatchedmaterials
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