Profile

Takumi Yokomizo

Affiliation

Center for Ecological research, Kyoto University

Society

The Ecological Society of Japan / Japanese Society for Chronobiology / Society of Evolutionary Studies, Japan / European Biological Rhythms Society / Society for Molecular Biology and Evolution

E-mail

turdus.tsugumi#at#gmail.com (Please convert #at# to @)

Education

2015.04 - 2019.03

2019.04 - 2020.09

2020.10 - 2023.03

2019.04 - 2023.03

BSc, Department of Biology, Faculty of Science, Chiba University

MSc, Department of Biology, Division of Advanced Science and Engineering, Graduate School of Science and Engineering, Chiba University

Ph.D. student, Department of Biology, Division of Advanced Science and Engineering, Graduate School of Science and Engineering, Chiba University

Frontier Science Program, Graduate School of Science and Engineering, Chiba University

Work experience

2021.04 - 2023.03

2023.04 - 2024.03

2024.04 -

JSPS Research Fellowship for Young Scientists (DC1), Chiba University

JSPS Research Fellowship for Young Scientists (PD), Chiba University

CER PostDoc Fellow, Center for Ecological Research, Kyoto University

Awards

2019.03

2020.09

2021.03

2022.07

2023.03

Dean's commendation at Chiba University

ESJ69 Best Poster Award

JSC27 Poster Excellence Award

Dean's commendation at Chiba University

EBRS Congress 2022 Poster Excellence Award

Dean's commendation at Chiba University

Researches

Adaptation and molecular response to the tidal cycle in Cardamine scutata

While many plant species live in terrestrial environments, some establish themselves in freshwater or marine environments. Cardamine scutata inhabits both non-tidal and tidal environments along rivers, and individuals in tidal environments are completely submerged at high tide. I am studying the adaptation mechanisms to periodic submergence in a tidal environment, focusing on root and pollen traits and gene expression rhythms. Through this research, I aim to understand how plants adapt to a boundary between terrestrial and aquatic environments with temporal heterogeneity caused by tidal cycles.

Genetic basis of the circatidal rhythm in a mangrove cricket

The mangrove cricket is active on the ground in mangrove forests during low tide and rest on the trees during high tide. This tidally synchronized activity rhythm is thought to be generated by a circatidal clock, an internal clock with a 12-hour cycle. Although the circatidal rhythm is observed in many intertidal species, its genetic basis is largely unknown. I am searching for genes responsible for the oscillation of circatidal rhythms through genome-wide analysis of the expression and molecular modification patterns of genes showing oscillation entrained to the tidal cycle.

Publications

Yokomizo, T. and Y. Takahashi (2020) Changes in transcriptomic response to salinity stress induce the brackish water adaptation in a freshwater snail. Scientific Reports, 10, 16049. https://doi.org/10.1038/s41598-020-73000-8
Yokomizo, T. and Y. Takahashi (2022) Endogenous rhythm variation and adaptation to the tidal environment in the freshwater snail, Semisulcospira reiniana. Frontiers in Ecology and Evolution, 10:1078234.
https://doi.org/10.3389/fevo.2022.1078234
Yokomizo, T. and Y. Takahashi (2024) Plasticity of circadian and circatidal rhythms in activity and transcriptomic dynamics in a freshwater snail. Heredity, 132, 267–274 https://doi.org/10.1038/s41437-024-00680-7

Presentations

Yokomizo, T. and Y. Takahashi. The plastic shift in the endogenous rhythm in tidal adaptation of the freshwater snail. 17th European Biological Rhythms Society Congress, Zurich, Switzerland. (July 2022) [Poster]
Yokomizo, T., and Y. Takahashi. Environment-dependent endogenous rhythms and transcriptomic differentiation in a freshwater snail. The Annual Meeting of the Society for Molecular Biology and Evolution 2023, Ferrara, Italy. (July 2023) [Poster]

and 12 presentations in Japanese conferences