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Japan, acknowledged as a country with many volcanic activities, has various hot springs associated with colorful microbial mats (biomats). Biomineralization of calcite at Ogawa hot springs in Toyama Prefecture and Chugu hot springs in Ishikawa Prefecture have been investigated. Microbial calcite is formed in the both hot springs. Microbial calcite is covered with cyanobacteria to form thread-ball structure, so-called \"Itodemari-structure\". In the case of Ogawa hot springs, biomats appear with black and green stripes along the flow of hot spring water. Cyanobacteria are 2.7 μm wide and those living in the black biomats, contain abundant S and Ca with traces of Al, Si and P while those in the green biomats are 1.1 μm wide contain abundant S and Ca with traces of Si, P and Cl. Cyanobacteria living in the green biomats of Chugu hot springs are 0.9 μm wide and contained abundant Si, P, S, Cl, K, Ca and Fe.The color of the biomats is considered to reflect the size of the cyanobacteria. Under each biomat, calcite of different size was recognized. The mean diameter of calcite was 67.6 μm under the black and 38.0 μm under the green biomats, respectively. This phenomenon is also considered to be correlated with the size of the cyanobacteria. Light irradiated experiments showed that the fluctuation patterns of pH values are different between these biomats, due to the difference in the potential of photosynthesis. 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温泉バイオマット中の微生物にコントロールされる方解石の結晶成長
http://hdl.handle.net/2297/2566
http://hdl.handle.net/2297/2566ed637feb-0cc1-4c3b-9020-dfca20e92d3e
名前 / ファイル | ライセンス | アクション |
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AN00141768-TAZAKI-106-2.pdf (2.9 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-03 | |||||
タイトル | ||||||
タイトル | 温泉バイオマット中の微生物にコントロールされる方解石の結晶成長 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Crystal growth of calcite in microbial mats in hot springs is controlled by microorganisms | |||||
言語 | ||||||
言語 | jpn | |||||
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 | |||||
著者 |
安多, 剛
× 安多, 剛× 加藤, 裕将× 田崎, 和江 |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学大学院自然科学研究科 | |||||
書誌情報 |
地質学雑誌 巻 106, 号 8, p. 548-549, 発行日 2000-08-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0016-7630 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00141768 | |||||
出版者 | ||||||
出版者 | 日本地質学会 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 富山県の小川温泉と石川県の中宮温泉には緑色と黒色のバイオマットが存在し, シアノバクテリアの関与によって方解石が形成されている.バイオマット中ではシアノバクテリアが方解石に巻き付くことによって糸手鞠構造が形成され, その方解石は球状を呈する.バイオマットの色はバクテリアの大きさを反映しており, バクテリア細胞の体サイズと光合成能力(光応答性)の差異はバイオマット中で生成される方解石のサイズと相関している.代謝活動(光合成能力)が活発なものは小さい方解石を形成し, 活発でないものは大きな方解石を形成する.このことから, 微生物が方解石のサイズをコントロールしていることが示唆された. Japan, acknowledged as a country with many volcanic activities, has various hot springs associated with colorful microbial mats (biomats). Biomineralization of calcite at Ogawa hot springs in Toyama Prefecture and Chugu hot springs in Ishikawa Prefecture have been investigated. Microbial calcite is formed in the both hot springs. Microbial calcite is covered with cyanobacteria to form thread-ball structure, so-called "Itodemari-structure". In the case of Ogawa hot springs, biomats appear with black and green stripes along the flow of hot spring water. Cyanobacteria are 2.7 μm wide and those living in the black biomats, contain abundant S and Ca with traces of Al, Si and P while those in the green biomats are 1.1 μm wide contain abundant S and Ca with traces of Si, P and Cl. Cyanobacteria living in the green biomats of Chugu hot springs are 0.9 μm wide and contained abundant Si, P, S, Cl, K, Ca and Fe.The color of the biomats is considered to reflect the size of the cyanobacteria. Under each biomat, calcite of different size was recognized. The mean diameter of calcite was 67.6 μm under the black and 38.0 μm under the green biomats, respectively. This phenomenon is also considered to be correlated with the size of the cyanobacteria. Light irradiated experiments showed that the fluctuation patterns of pH values are different between these biomats, due to the difference in the potential of photosynthesis. Further TEM observations showed that a number of spherical calcite are formed in bacterial adhesive, which suggests that bacteria in hot springs, play an important role for the nucleation of calcite under photosynthetic conditions, and control the crystal growth of calcite in forming thread-ball structure. | |||||
権利 | ||||||
権利情報 | 日本地質学会の許諾を得て登録 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |