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Notaguchi Lab
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The lab explores the signals that travel throughout the whole plant body and the mechanisms of grafting.

AboutAbout the lab
How do plants exchange information throughout their whole body?
The Notaguchi Lab (plant physiology) aims to clarify the mechanisms of the robust and flexible ways of living that plants have acquired to adapt in the natural world.
The lab studies everything from how plants receive environmental information locally, to signal transduction inside cells, to systemic signaling at the tissue and whole-plant levels.
Using state-of-the-art cell imaging techniques and original microdevices, the lab conducts research at levels ranging from molecules to whole plants.
Key terms
- Systemic signaling
- A mechanism by which distant parts of a plant exchange information through the vascular bundles
- Grafting
- A method of cutting two plants and joining them so that they grow as one plant
- Vascular bundles
- Bundles of tubes inside a plant that carry water, nutrients, and information
ResearchResearch themes
To clarify the robust and flexible modes of life that plants have acquired to adapt in the natural world, the lab studies everything from the local perception of environmental information, to signal transduction inside cells, to systemic signaling at the tissue and whole-plant levels.
*Illustrative imageSystemic Signaling and Adaptation Strategies
The lab studies systemic signaling by molecules transported through the vascular bundles of plants. The lab has shown that in higher plants, mRNAs are also transported throughout the plant body, and that there are a great many types of them. The lab is investigating the mechanisms and roles of this transport.
*Illustrative imageMechanisms of Grafting
Grafting is a phenomenon in which injured tissues regenerate and cell reprogramming and cell adhesion take place. The lab studies the biological phenomena involved in grafting itself.
MembersFaculty
The members of the Notaguchi Lab are faculty members, postdoctoral researchers, doctoral and master's students, fourth-year undergraduates, and secretaries and technical assistants.As of 2026
- ProfessorMichitaka Notaguchi
- Program-Specific Associate ProfessorMariko Kato
- Program-Specific Associate ProfessorJunpei Takagi
- Assistant ProfessorNobuyoshi Mochizuki
- Assistant ProfessorShiori Nagahara
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Grafting techniques in Uzbekistan” Shuhrataxmedov / CC BY-SA 3.0 (cropped)
- Systemic Signaling and Adaptation Strategies: “Arabidopsis thaliana kz13” Krzysztof Ziarnek, Kenraiz / CC BY-SA 4.0 (cropped)
- Mechanisms of Grafting: “Cleft-grafting Fig1 Fig2 p329 Brett's-Colonists'-Guide-1883” 作者不詳 / Public domain (cropped)
- Related lab (Kyoto University Institute for Chemical Research, Biomolecular Information Lab): “Arabidopsis halleri flower (01)” Andrea Moro / CC BY-SA 4.0 (cropped)
- Related lab (Plant Molecular Physiology Lab): “Stomata of Tradescantia spathacea leaves” Trương Minh Khải / CC BY 4.0 (cropped)
- Related lab (Developmental Genome Science / Animal Embryology Lab): “Siphon exhalant d'ascidie (Ciona intestinalis) (Ifremer )” Olivier Dugornay / CC BY 4.0 (cropped)
- Related lab (Quantum Chemistry Lab): “Amniote rhodopsin 3D structures” Constanze Bickelmann / CC BY-SA 3.0 (cropped)
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