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Fate of 14C-labeled microbial products derived from nitrifying bacteria in autotrophic nitrifying biofilms

https://hiroshima.repo.nii.ac.jp/records/2006297
https://hiroshima.repo.nii.ac.jp/records/2006297
97de1b41-ff3c-4851-86a3-0783c87e874f
名前 / ファイル ライセンス アクション
AEM_71_3987.pdf AEM_71_3987.pdf (565.5 KB)
Item type デフォルトアイテムタイプ_(フル)(1)
公開日 2023-03-18
タイトル
タイトル Fate of 14C-labeled microbial products derived from nitrifying bacteria in autotrophic nitrifying biofilms
言語 en
作成者 Okabe, Satoshi

× Okabe, Satoshi

en Okabe, Satoshi

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Kindaichi, Tomonori

× Kindaichi, Tomonori

en Kindaichi, Tomonori

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Ito, Tsukasa

× Ito, Tsukasa

en Ito, Tsukasa

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利情報
権利情報 Copyright (c) American Society for Microbiology
主題
主題Scheme NDC
主題 510
内容記述
内容記述 The cross-feeding of microbial products derived from 14C-labeled nitrifying bacteria to heterotrophic bacteria coexisting in an autotrophic nitrifying biofilm was quantitatively analyzed by using microautoradiography combined with fluorescence in situ hybridization (MAR-FISH). After only nitrifying bacteria were labeled with [14C] bicarbonate, biofilm samples were incubated with and without NH4+ as a sole energy source for 10 days. The transfer of 14C originally incorporated into nitrifying bacterial cells to heterotrophic bacteria was monitored with time by using MAR-FISH. The MAR-FISH analysis revealed that most phylogenetic groups of heterotrophic bacteria except the β-Proteobacteria showed significant uptake of 14C-labeled microbial products. In particular, the members of the Chloroflexi were strongly MAR positive in the culture without NH4+ addition, in which nitrifying bacteria tended to decay. This indicated that the members of the Chloroflexi preferentially utilized microbial products derived from mainly biomass decay. On the other hand, the members of the Cytophaga-Flavobacterium cluster gradually utilized 14C-labeled products in the culture with NH4+ addition in which nitrifying bacteria grew. This result suggested that these bacteria preferentially utilized substrate utilization-associated products of nitrifying bacteria and/or secondary metabolites of 14C-labeled structural cell components. Our results clearly demonstrated that the coexisting heterotrophic bacteria efficiently degraded and utilized dead biomass and metabolites of nitrifying bacteria, which consequently prevented accumulation of organic waste products in the biofilm.
言語 en
出版者
出版者 American Society for Microbiology
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
識別子タイプ DOI
関連識別子 10.1128/AEM.71.7.3987-3994.2005
関連情報
識別子タイプ DOI
関連識別子 http://dx.doi.org/10.1128/AEM.71.7.3987-3994.2005
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0099-2240
収録物識別子
収録物識別子タイプ NCID
収録物識別子 AA00543249
開始ページ
開始ページ 3987
書誌情報 Applied and Environmental Microbiology
Applied and Environmental Microbiology

巻 71, 号 7, p. 3987-3994, 発行日 2005-07
旧ID 20779
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