Biomineralization of silica associated with colonization of an unicellular alga, Cyanidium caldarium, in an acidic hot spring.
Bibliographic Information
- Other Title
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- 酸性温泉中の単細胞藻イデユコゴメのコロニー形成に伴うシリカの生体鉱物化作用
- サンセイ オンセン チュウ ノ タンサイボウ ソウ イデユコゴメ ノ コロニー ケイセイ ニ トモナウ シリカ ノ セイタイ コウブツカ サヨウ
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Abstract
Biomineralization processes of silica associated with colonization of unicellular red alga, Cyanidium caldorium in green biomats were examined in this study. The green biomats occur in Higashi Hot Spring at the Satsuma-Iwo Jima Island in Kagoshima Prefecture, Japan. The biomats consist mainly of C. caldarium cells under acidic condition (<pH 2). The colonies of C. caldarium cells gradually change into angular shape with concentration of silica, and simultaneously organic matter is leached out together with P and S. The XRD and electron diffraction pattern indicated that the concentrated silica transformed from amorphous silica into cristobalite. When the colony developed, the inside part decolorized and became transparent due to loss of chlorophyll. Natural cultivation examination of C. caldarium indicates that the development of the colony depend on solution pH, nutrients, silica-concentration, growth rate of the cells, and eco-system with bacterial condition, and play an important role in silica-biomineralization.
Journal
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- The Journal of the Geological Society of Japan
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The Journal of the Geological Society of Japan 106 (9), 597-608, 2000
The Geological Society of Japan
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Details 詳細情報について
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- CRID
- 1390282681210485760
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- NII Article ID
- 110003013138
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- NII Book ID
- AN00141768
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- COI
- 1:CAS:528:DC%2BD3cXnt1Kksrs%3D
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- ISSN
- 13499963
- 00167630
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- HANDLE
- 2297/2565
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- NDL BIB ID
- 5497453
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed