Takashi Kuratomi
Kyushu University
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Publication
Featured researches published by Takashi Kuratomi.
Frontiers in Microbiology | 2016
Tatsuhiko Hoshino; Takashi Kuratomi; Yuki Morono; Tomoyuki Hori; Hisashi Oiwane; Shoichi Kiyokawa; Fumio Inagaki
Previous studies of microbial communities in deep-sea hydrothermal ferric deposits have demonstrated that members of Zetaproteobacteria play significant ecological roles in biogeochemical iron-cycling. However, the ecophysiological characteristics and interaction between other microbial members in the habitat still remain largely unknown. In this study, we investigated microbial communities in a core sample obtained from shallow hydrothermal iron-oxyhydroxide deposits at Nagahama Bay of Satsuma Iwo-Jima, Japan. Scanning electron microscopic observation showed numerous helical stalk structures, suggesting the occurrence of iron-oxidizing bacteria. Analysis of 16S rRNA gene sequences indicated the co-occurrence of iron-oxidizing Zetaproteobacteria and iron-reducing bacteria such as the genera Deferrisoma and Desulfobulbus with strong correlations on the sequence abundance. CARD-FISH indicated that the numbers of Zetaproteobacteria were not always consistent to the frequency of stalk structures. In the stalk-abundant layers with relatively small numbers of Zetaproteobacteria cells, accumulation of polyphosphate was observed inside Zetaproteobacteria cells, whereas no polyphosphate grains were observed in the topmost layers with fewer stalks and abundant Zetaproteobacteria cells. These results suggest that Zetaproteobacteria store intracellular polyphosphates during active iron oxidation that contributes to the mineralogical growth and biogeochemical iron cycling.
地球科學 | 2015
Takashi Kuratomi
Japan Geoscience Union | 2015
Tatsuhiko Hoshino; Takashi Kuratomi; Tomoyuki Hori; Hisashi Oiwane; Yuki Morono; Fumio Inagaki; Shoichi Kiyokawa
Japan Geoscience Union | 2015
Takashi Kuratomi; Shoichi Kiyokawa; Minoru Ikehara; Shusaku Goto; Tatsuhiko Hoshino; Fumihiko Ikegami; Yuto Minowa
Japan Geoscience Union | 2014
Takashi Kuratomi; Shoichi Kiyokawa; Minoru Ikehara; Shusaku Goto; Tatsuhiko Hoshino; Fumihiko Ikegami; Yuto Minowa
Japan Geoscience Union | 2014
Fumihiko Ikegami; Yuto Minowa; Takashi Kuratomi; Shoichi Kiyokawa; Hisashi Oiwane; Yasuyuki Nakamura; Katsura Kameo
Annual Meeting of the Geological Society of Japan The 121st Annual Meeting(2014' Kagoshima) | 2014
Takashi Kuratomi; Shoichi Kiyokawa; Minoru Ikehara; Shusaku Goto; Tatsuhiko Hoshino; Fumihiko Ikegami; Yuto Minowa
2014 AGU Fall Meeting | 2014
Takashi Kuratomi
Annual Meeting of the Geological Society of Japan The 120th Annual Meeting(2013' Sendai) | 2013
Takashi Kuratomi; Minoru Ikehara; Shusaku Goto; Fumihiko Ikegami; Yuto Minowa
Annual Meeting of the Geological Society of Japan The 120th Annual Meeting(2013' Sendai) | 2013
Fumihiko Ikegami; Shoichi Kiyokawa; Hisashi Oiwane; Yasuhisa Nakamura; Katsura Kameo; Yuto Minowa; Takashi Kuratomi
Collaboration
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National Institute of Advanced Industrial Science and Technology
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