| 1. |
Hamamura, N., Exploring microbe-mineral interactions and biotransformation of toxic metalloids for potential application in metal-biotechnology, OIST-KYUDAI JOINT SYMPOSIUM -Bio-inspired wonders and energy innovations, 2024.03. |
| 2. |
Hokimoto, T., Yamashita, D., Mitsunobu, S., Hamamura, N., Biotransformation of antimony and Fe(III) oxyhydroxide by microbial consortium associated with mine tailing soil , 13th Asian Symposium for Microbial Ecology/36th Japanese Society of Microbial Ecology, 2023.10. |
| 3. |
Hamamura, N., Kashima, H., Mitsunobu, , Metagenomic characterization of novel electroactive microorganisms enriched from stibnite mine wastewater, 13th Asian Symposium for Microbial Ecology/36th Japanese Society of Microbial Ecology, 2023.10. |
| 4. |
Hamamura, N., Kashima, H., Mitsunobu, S., Metagenomic characterization of novel electroactive microorganisms enriched from stibnite mine wastewater, Goldschmidt 2023, 2023.07. |
| 5. |
Hamamura, N., Kashima, H., Mitsunobu, S., Characterization of electroactive microorganisms associated with stibnite mine wastewater., Goldschmidt2022, 2022.07. |
| 6. |
Hamamura N, Yamashita D, Mitsunobu S., Microbe-mineral interaction and biotransformation of toxic metalloids, International Conference on Materials and Systems for Sustainability 2021, 2021.11. |
| 7. |
Yamashita D, Mitsunobu S, Hamamura N., Biotransformation potential of antimony-reducing microbial consortium obtained from stibnite mine tailing soil, International Conference on Materials and Systems for Sustainability 2021, 2021.11. |
| 8. |
Yoshimura Y, Okubo T, Kashima H, Hamamura N., Characterization of microbial communities associated with microbial fuel cells , International Conference on Materials and Systems for Sustainability 2021, 2021.11. |
| 9. |
Yamashita D, Mitsunobu S, Hamamura N., Biotransformation potential of antimony-reducing microbial consortium obtained from stibnite mine tailing soil, 日本微生物生態学会第34回大会, 2021.10. |
| 10. |
Natsuko Hamamura, Tomotaka Okubo, Satoshi Mitsunobu, Microbial Biotransformation of Toxic Metalloids and Its Bioremediation Potentials, International Conference on Materials and Systems for Sustainability 2019, 2019.11. |
| 11. |
Hamamura, N., Yamashita, Y., Kataoka, T., Mitsunobu, S., Diversity of microbial arsenic and antimony transformation pathways associated with antimony mine tailing, Goldschmidt2019, 2019.09, Arsenic (As) and antimony (Sb) are both naturally occurring toxic metalloids and are considered to be priority pollutants of interest by the USEPA. Antimony is commonly associated with As in the environment and both elements have similar chemistry and toxicity. The trivalent forms, AsIII and SbIII, are highly reactive with thiol-containing proteins and more toxic to biota than AsV and SbV. Despite their toxicity, microorganisms have developed mechanisms to tolerate and catalyze redox transformation of As and Sb. In this study, we characterized microbial metalloid transformation pathways associated with stibnite mine tailing soils (Ehime, Japan). Total concentrations of Sb and As in the surface soils were 2.28 and 1.24 g kg-1, respectively [1]. By conducting enrichment culturing, relevant As and Sb-transforming bacteria, including aerobic SbIII-oxidizing Pseudomonas and Stenotrophomonas strains and an anaerobic SbIII-oxidizing Mesorhizobium strain, were isolated. These SbIII-oxidizing isolates did not oxidize AsIII, suggesting the involvement of different mechanisms for Sb and As oxidation. In addition, an anaerobic consortium capable of reducing SbV in the presence of lactate were obtained and the precipitation of antimonite as antimony trioxide was confirmed by X-ray absorption near-edge structure (XANES). The influence of the co-contamination with Sb and As on mine soil microbial community was also examined. It was shown that the presence of Sb species affected AsIII oxidation rates and selected distinct AsIII-oxidizing bacteria with higher tolerance to As and Sb toxicity [2]. Collectively, our study revealed the presence of diverse microbial metalloid transformation pathways associated with polluted environments, and the importance of co-existing metalloid as a factor affecting the redox transformation and mobility of arsenic in natural systems.. |
| 12. |
Hamamura, N., Kataoka, T., Functional analysis of microbial communities associated with arsenic transformation in contaminated soil., The 11th Asian Symposium on Microbial Ecology, 2019.05. |
| 13. |
Yoriko Yamashita, Natsuko Hamamura., Characterization and diversity of microbial antimony transformation pathways, The 32nd JSME and 10th ASME, 2018.07. |
| 14. |
Hamamura, N., Microbial biotransformation of toxic metalloids, 環境微生物学最前線２０１７, 2018.02. |
| 15. |
Hamamura, N., Mitsunobu, S., Microbial biotransformation of toxic metalloids and its bioremediation implications, The 14th International Symposium on Persistent Toxic Substance, 2017.09. |
| 16. |
S Amachi, T Tsuchiya, Y Kasahara, N Hamamura, Biogeochemical aresnic cycling unraveled by microbial genome analysis, JpGU-AGU Joint Meeting 2017, 2017.05. |
| 17. |
Misaki Eto, Tetsukazu Yahara, Arika Kuroiwa, Natsuko Hamamura, Diversity and composiiton of rumen microbiome in Sika deers (Cervus nippon yakushimae) from Yakushima Island, Japan, The 9th Asian Symposium on Microbial Ecology, 2017.04. |
| 18. |
Hamamura, N., Huang, H., Damdinsuren, N., Diversity of microbial arsenic transformation pathways and community response to arsenic in a saline lake habitat, The 8th Asian Symposium on Microbial Ecology, 2016.09. |
| 19. |
Hamaura, N., Utsunomiya, S., Nakano, Y., Mitsunobu, S., Microbial antimony transformation associated with antimony mine tailing, Goldschmidt2016, 2016.06. |
| 20. |
Hamamura, N., Mitsunobu, S., Diversity of microbial metalloid transformation pathways and its geochemical implications, Japan Geoscience Union Meeting 2016, 2016.05. |
| 21. |
Natsuko Hamamura, Diversity of microbial arsenic transformation pathways associated with arsenic impacted environments, 4th Internationa Congress on Natural Science, 2015.09. |
| 22. |
Natsuko Hamamura, Biotransformation of toxic metalloids associated with contaminated environments: cellular to community level function and response, Interdisciplinary symposium on Environmental Microbiology for sustainable society, 2015.02. |
| 23. |
Kataoka, T., Hamamura, N., Effect of antimony on arsenite oxidation by soil microbial community., 環境微生物系学会合同大会2014, 2014.10. |
| 24. |
Natsuko Hamamura, Huang, H., Damdinsuren, N., Diversity of microbial arsenic transformation pathways associated with an alkaline saline lake in northern Mongolia., 15th International Symposium on Microbial Ecology Annual Meeting, 2014.08. |
| 25. |
Hamamura, N., Fukushima, K., Huang, H., Kataoka, T., Microbial transformation of toxic elements associated with mine tailing, The 5th Taiwan-Korea-Japan International Symposium on Microbial Ecology, 2013.11. |
| 26. |
Huang, H., Takemoto, K., Hamamura, N., Bioinformatics analysis in meta-transcriptome profiling of microbial response to toxic elements exposure, Annual Convention of Japanese Society for Bioinformatics, 2013.10. |
