Anaerobic Elemental Sulfur Reduction by Fungus<i>Fusarium oxysporum</i>
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- ABE Tsuyoshi
- Graduate School of Life and Environmental Sciences, University of Tsukuba
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- HOSHINO Takayuki
- Graduate School of Life and Environmental Sciences, University of Tsukuba
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- NAKAMURA Akira
- Graduate School of Life and Environmental Sciences, University of Tsukuba
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- TAKAYA Naoki
- Graduate School of Life and Environmental Sciences, University of Tsukuba
書誌事項
- タイトル別名
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- Anaerobic Elemental Sulfur Reduction by Fungus Fusarium oxysporum
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説明
Reduction of inorganic sulfur compounds by the fungus Fusarium oxysporum was examined. When transferred from a normoxic to an anoxic environment, F. oxysporum reduced elemental sulfur to hydrogen sulfide (H2S). This reaction accompanied fungal growth and oxidation of the carbon source (ethanol) to acetate. Over 2-fold more of H2S than of acetate was produced, which is the theoretical correlation for the oxidation of ethanol to acetate. NADH-dependent sulfur reductase (SR) activity was detected in cell-free extracts of the H2S-producing fungus, and was found to be up-regulated under the anaerobic conditions. On the other hands both O2 consumption by the cells and cytochrome c oxidase activity by the crude mitochondrial fractions decreased. These results indicate that H2S production involving SR was due to a novel dissimilation mechanism of F. oxysporum, and that the fungus adapts to anaerobic conditions by replacing the energy-producing mechanism of O2 respiration with sulfur reduction.
収録刊行物
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 71 (10), 2402-2407, 2007
公益社団法人 日本農芸化学会
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詳細情報 詳細情報について
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- CRID
- 1390001206479613440
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- NII論文ID
- 10027519599
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- NII書誌ID
- AA10824164
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- ISSN
- 13476947
- 09168451
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- NDL書誌ID
- 8980413
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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