Researcher Profile Watanabe.K

Department・Position

Water Environment Group／Researcher

Field

Water chemistry, Microbial ecology／Biogeochemical cycle

Thema of investigation and research

Purification of water quality of rivers in Saitama

Joint researches with outside organizations（optional matters）

A new process in the nitrogen cycle by freshwater bacterioplankton and its geochemical impact, funded by the Japan Society for the Promotion of Science (JSPS), a Grant-in-Aid for Scientific Research (C), Project no. 22K12351, 2022–

A new process in the phosphorus cycle by riverine bacterioplankton and its geochemical impact, funded by the Japan Society for the Promotion of Science (JSPS), a Grant-in-Aid for Scientific Research (C), Project no. 19K12313, 2019–2021

Influence of freshwater bacterioplankton to phosphorus cycling in rivers, funded by the Japan Society for the Promotion of Science (JSPS), a Grant-in-Aid for Young Scientists (B), Project no. 15K16122, 2015–2017

Ecology of freshwater bacterioplankton linked to quality of dissolved organic carbon, funded by the Japan Society for the Promotion of Science (JSPS), a Grant-in-Aid for Young Scientists (B), Project no. 23710023, 2011–2013

The subject of research Future aspirations

Biogeochemical cycles in soil and water environments

Degree

Ph. D.

Career

2012–present Researcher at Water Environment Group, Water and Geo-Environment Division, Center for Environment Group (CESS), Japan

2010–2012 Postdoctoral Research Associate at Soil Science Section, Water and Soil Environment Division, National Institute for Environmental Studies (NIES), Japan

2005–2009 Postdoctoral Research Associate at Water Environment Division, Ibaraki Kasumigaura Environmental Science Center, Japan

2005 Ph. D. in Life and Environmental Sciences, University of Tsukuba

Academic society to which belongs

Japanese Society of Microbial Ecology, The Japanese Society of Limnology, The Japanese Association of Organic Geochemists

Writings and Papers

Ogata Y, Watanabe K, Takemine S, Kaida K, Tanokura M, Suda W (2022) Complete genome sequences of Rhodoluna sp. strains KAS3 and KACHI23, isolated from lake and river surface water. Microbiology Resource Announcements, 11, e01122-22.

Ogata Y, Watanabe K, Takemine S, Shindo C, Kurokawa R, Suda W (2022) Whole genome sequence of Sediminibacterium sp. strain TEGAF015 isolated from a shallow eutrophic freshwater lake in Japan. Microbiology Resource Announcements, 11, e00882-22.

Ogata Y, Watanabe K, Takemine S, Kaida K, Tanokura M, Suda W (2022) Complete genome sequence of Aquiluna sp. strain KACHI24, isolated from river surface water. Microbiology Resource Announcements, 11, e00858-22.

Watanabe K, Kitamura T, Ogata Y, Shindo C, Suda W (2022) Flavobacterium ammonificans sp. nov. and Flavobacterium ammoniigenes sp. nov., ammonifying bacteria isolated from surface river water. International Journal of Systematic and Evolutionary Microbiology, 72.

Suda W, Ogata Y, Shindo C, Watanabe K (2022) Complete genome sequences of two Flavobacterium ammonificans strains and a Flavobacterium ammoniigenes strain of ammonifying bacterioplankton isolated from surface river water. Microbiology Resource Announcements e00176-22.

Morikawa Y, Hayashi S, Negishi Y, Masuda C, Watanabe M, Watanabe K, Masaka K, Matsuo A, Suzuki M, Tada C, Seiwa K (2022) Relationship between the vertical distribution of fine roots and residual soil nitrogen along a gradient of hardwood mixture in a conifer plantation. New Phytologist 235, 993–1004.

Mishima I, Masuda S, Kakimoto T, Ikeda K, Watanabe K, Maruo C, Nishimura O (2021) Assessment of nitrous oxide production in eutrophicated rivers with inflow of treated wastewater based on investigation and statistical analysis. Environmental Monitoring and Assessment 193, 93.

Suda W, Ogata Y, Takayasu L, Shindo C, Watanabe K (2021) Complete genome and plasmid sequences of three Fluviibacter phosphoraccumulans polyphosphate-accumulating bacterioplankton strains isolated from surface river water. Microbiology Resource Announcements, 10, e01474-20.

Watanabe K, Morohoshi S, Kunihiro T, Ishii Y, Takayasu L, Ogata Y, Shindo C, Suda W (2020) Fluviibacter phosphoraccumulans gen. nov., sp. nov., a polyphosphate accumulating bacterium of Fluviibacteraceae fam. nov., isolated from surface river water. International Journal of Systematic and Evolutionary Microbiology, 70, 5551–5560.

Nishikiori T, Watanabe M, Koshikawa MK, Takamatsu T, Watanabe K, Yamamura S, Hayashi S (2019) 137Cs transfer from canopies onto forest floors at Mount Tsukuba in the four years following the Fukushima nuclear accident. Science of the Total Environment, 659, 783–789.

Watanabe K, Ishii Y. Komatsu N, Kitamura T, Watanabe M, Yamamura S, Imai A, Hayashi S (2017) Growth rates and tolerance to low water temperatures of freshwater bacterioplankton strains: ecological insights from shallow hypereutrophic lakes in Japan. Hydrobiologia, 792, 67–81.

Watanabe K, Kohzu A, Suda W, Yamamura S, Takamatsu T, Takenaka A, Koshikawa MK, Hayashi S, Watanabe M (2016) Microbial nitrification in throughfall of a Japanese cedar associated with archaea from the tree canopy. SpringerPlus, 5, 1596.

Nishikiori T, Watanabe M, Koshikawa MK, Takamatsu T, Ishii Y, Ito S, Takenaka A, Watanabe K, Hayashi S (2015) Uptake and translocation of radiocesium in cedar leaves following the Fukushima nuclear accident. Science of the Total Environment, 502, 611–616.

Kosaka T, Toh H, Fujiyama A, Sakaki Y, Watanabe K, Meng X-Y, Hanada S, Toyoda A (2014) Physiological and genetic basis for self-aggregation of a thermophilic hydrogenotrophic methanogen, Methanothermobacter strain CaT2. Environmental Microbiology Report, 6, 268–277.

Yamamura S, Watanabe K, Suda W, Tsuboi S, Watanabe M (2014) Effect of antibiotics on redox transformations of arsenic and diversity of arsenite-oxidizing bacteria in sediment microbial communities. Environmental Science & Technology, 48, 350–357.

Kong YH, Watanabe M, Nagano H, Watanabe K, Yashima M, Inubushi K (2013) Effects of land-use type and nitrogen addition on nitrous oxide and carbon dioxide production potentials in Japanese Andosols. Soil Science and Plant Nutrition, 59, 790–799.

Watanabe K, Komatsu N, Kitamura T, Ishii Y, Park H-D, Miyata R, Noda N, Sekiguchi Y, Satou T, Watanabe M, Yamamura S, Imai A, Hayashi S (2012) Ecological niche separation in the Polynucleobacter subclusters linked to quality of dissolved organic matter: a demonstration using a high sensitivity cultivation-based approach. Environmental Microbiology, 14, 2511–2525.

Shimotori K, Watanabe K, Hama T (2012) Fluorescence characteristics of humic-like fluorescent dissolved organic matter produced by various taxa of marine bacteria. Aquatic Microbial Ecology, 65, 249–260.

Imase M, Watanabe K, Kitamura T, Tanaka H, Aoyagi H (2011) Screening for lectin-like protein-producing microorganisms based on cell surface proteins. Canadian Journal of Microbiology, 57, 78–83.

Narukawa M, Watanabe K, Inoue Y (2011) Light-induced root hair formation in lettuce (Lactuca sativa L. cv. Grand Rapids) roots at low pH is brought by chlorogenic acids synthesis and sugar. Journal of Plant Research, 123, 789–799.

Ishii Y, Harigae S, Tanimoto S, Yabe T, Yoshida T, Taki K, Komatsu N, Watanabe K, Negishi M, Tatsumoto H (2010) Spatial variation of phosphorus fractions in bottom sediments and the potential contributions to eutrophication in shallow lakes. Limnology, 11, 5–6.

Ishii Y, Yabe T, Nakamura M, Amano Y, Komatsu N, Watanabe K (2010) Effect of nitrate on phosphorus mobilization from bottom sediment in shallow eutrophic lakes. Journal of Water and Environment Technology, 7, 163–176.

Iwase A, Hideno A, Watanabe K, Mitsuda N, Ohme-Takagi M (2009) A chimeric NST repressor has the potential to improve glucose productivity from plant cell walls. Journal of Biotechnology, 142, 279–284.

Watanabe K, Komatsu N, Ishii Y, Negishi M (2009) Effective isolation of bacterioplankton genus Polynucleobacter from freshwater environments grown on photochemically degraded dissolved organic matter. FEMS Microbiology Ecology, 67, 57–68.

Watanabe K, Imase M, Aoyagi H, Ohmura N, Saiki H, Tanaka H (2008) Development of a novel artificial medium based on utilization of algal photosynthetic metabolites by symbiotic heterotrophs. Journal of Applied Microbiology, 105, 741–751.

Imase M, Watanabe K, Aoyagi H, Tanaka H (2008) Construction of artificial symbiotic community using Chlorella-symbiont association as a model. FEMS Microbiology Ecology, 63, 273–282.

Watanabe K, Imase M, Sasaki K, Ohmura N, Saiki H, Tanaka H (2006) Composition of the sheath of the green alga Chlorella sorokiniana. Letters in Applied Microbiology, 42, 538–543.

Watanabe K, Takihana N, Hanada S, Watanabe Y, Ohmura N, Saiki H, Tanaka H (2005) Symbiotic association in Chlorella culture. FEMS Microbiology Ecology, 51, 187–196.