Formation of Biogenic Manganese Oxide Nodules on Hyphae of a New Fungal Isolate of Periconia That Immobilizes Aqueous Copper
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- Tsushima Shihori
- Graduate School of Nanobioscience, Yokohama City University
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- Nishi Yuma
- Graduate School of Nanobioscience, Yokohama City University
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- Suzuki Ryo
- Graduate School of Nanobioscience, Yokohama City University
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- Tachibana Masaru
- Graduate School of Nanobioscience, Yokohama City University
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- Kanaly Robert A.
- Graduate School of Nanobioscience, Yokohama City University
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- Mori Jiro F.
- Graduate School of Nanobioscience, Yokohama City University
書誌事項
- タイトル別名
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- Formation of Biogenic Manganese Oxide Nodules on Hyphae of a New Fungal Isolate of <i>Periconia</i> That Immobilizes Aqueous Copper
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説明
<p>Mn(II)-oxidizing microorganisms are considered to play significant roles in the natural geochemical cycles of Mn and other heavy metals because the insoluble biogenic Mn oxides (BMOs) that are produced by these microorganisms adsorb other dissolved heavy metals and immobilize them as precipitates. In the present study, a new Mn(II)-oxidizing fungal strain belonging to the ascomycete genus Periconia, a well-studied plant-associating fungal genus with Mn(II)-oxidizing activity that has not yet been examined in detail, was isolated from natural groundwater outflow sediment. This isolate, named strain TS-2, was confirmed to oxidize dissolved Mn(II) and produce insoluble BMOs that formed characteristic, separately-located nodules on their hyphae while leaving major areas of the hyphae free from encrustation. These BMO nodules also adsorbed and immobilized dissolved Cu(II), a model analyte of heavy metals, as evidenced by elemental mapping analyses of fungal hyphae-BMO assemblages using a scanning electron microscope with energy-dispersive X-ray spectroscopy (SEM-EDX). Analyses of functional genes within the whole genome of strain TS-2 further revealed the presence of multiple genes predicted to encode laccases/multicopper oxidases that were potentially responsible for Mn(II) oxidation by this strain. The formation of BMO nodules may have functioned to prevent the complete encrustation of fungal hyphae, thereby enabling the control of heavy metal concentrations in their local microenvironments while maintaining hyphal functionality. The present results will expand our knowledge of the physiological and morphological traits of Mn(II)-oxidizing Periconia, which may affect the natural cycle of heavy metals through their immobilization.</p>
収録刊行物
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- Microbes and environments
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Microbes and environments 39 (2), n/a-, 2024
日本微生物生態学会 / 日本土壌微生物学会 / Taiwan Society of Microbial Ecology / 植物微生物研究会 / 極限環境生物学会
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詳細情報 詳細情報について
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- CRID
- 1390581931894370688
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- NII書誌ID
- AA11551577
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- ISSN
- 13474405
- 13426311
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- NDL書誌ID
- 033690334
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 抄録ライセンスフラグ
- 使用不可