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Volume 33, Issue 6
Displaying 1-19 of 19 articles from this issue
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[in Japanese]2004 Volume 33 Issue 6 Pages 411
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Akihiko HOGETSU2004 Volume 33 Issue 6 Pages 412-416
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Motoyuki YODA2004 Volume 33 Issue 6 Pages 417-421
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Haruo KURISU2004 Volume 33 Issue 6 Pages 422-426
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Koji SHIRAISHI2004 Volume 33 Issue 6 Pages 427-431
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Tadashi TAGAWA2004 Volume 33 Issue 6 Pages 432-436
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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[in Japanese]2004 Volume 33 Issue 6 Pages 437
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Shigeru MIYAHARA2004 Volume 33 Issue 6 Pages 438-441
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Hirokazu OCHIAI2004 Volume 33 Issue 6 Pages 442-446
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Kikuo INABA2004 Volume 33 Issue 6 Pages 447-451
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Akimasa NAKAI2004 Volume 33 Issue 6 Pages 452-456
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Junko MURASHITA, Sanae KIMURA, Takao TAKEMIKA2004 Volume 33 Issue 6 Pages 457-461
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Yasutoshi SHIMIZU, Masamitsu OGAWA2004 Volume 33 Issue 6 Pages 462-466
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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Kazuhiro SATOU, Kazue TAZAKI2004 Volume 33 Issue 6 Pages 467-475
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
JOURNAL FREE ACCESSIron bacteria precipitate copious amounts of iron hydroxides in microbial mats normally inhabiting in ironrich water. In this study, the following findings were made on accumulation of Fe and the formation of ironsheath regarding L. ochracea, an iron bacterium which is one of the most common inhabitants of iron microbial mats at neutral pH collected from underground water, by an electron microscopic observation:
(1) In a field experiment, the rate of inorganic precipitation is 1.6, and the rate of precipitation involving iron bacteria is 8.4, so that iron oxidizing bacteria are precipitating iron hydroxides in an amount five times or more of the inorganic precipitates.
(2) By metabolic pathway of live L. ochracea, the iron sheath can be formed in a short time period.
(3) UV-C treatment destroys the iron bacterial cells, thereby inhibiting the formation of iron-microbial mats.
(4) At an early formation stage of iron- sheath of L. ochracea, a fine fibrous network structure is formed around the cell wall. The tubular sheath is composed of thicken fibrous materials.
(5) By the metabolism of the iron bacterium, the oxidized Fe3+ is accumulated in the fine fibrous polysaccharide, thereby forming a sheath made of a complex of iron and an organic substance.
(6) The fine particles of iron hydroxide found on the surface of the sheath are particles of iron hydroxide oxidized inorganically.
(7) The matured sheath fixes low-crystalline ferrihydrite minerals in microbial mats.View full abstractDownload PDF (10546K) -
[in Japanese]2004 Volume 33 Issue 6 Pages 476-477
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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[in Japanese]2004 Volume 33 Issue 6 Pages 478
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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2004 Volume 33 Issue 6 Pages 479-481
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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[in Japanese]2004 Volume 33 Issue 6 Pages 482-483
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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2004 Volume 33 Issue 6 Pages 484
Published: June 20, 2004
Released on J-STAGE: March 18, 2010
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