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Taneda Lab
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A lab that explores how plants adapt to their environments by studying the mechanisms and structures behind water transport.
AboutAbout the lab
Exploring plant adaptation through form and water flow
The Taneda Lab investigates the functions of plant form and physiological traits, and studies the paths by which land plants have adapted to a wide range of environments.
Because plants cannot move, their form is directly tied to their function, from visible shapes to fine structures that can only be seen under a microscope.
Taking advantage of Nikko's location surrounded by mountains, the lab focuses on adaptation to harsh cold environments and on the characteristics of plants that grow at different elevations.
The lab is located at the Nikko Branch (Nikko Botanical Garden) of the Botanical Gardens, Graduate School of Science.
Key terms
- Vessel
- A pathway for transporting water in plants, formed by cells connected end to end into long, pipe-like tubes
- Tracheid
- An elongated, hollow cell that transports water. It is narrower than a vessel and passes water to neighboring cells through small pores in its side walls
- Woody plant
- A plant, such as a tree, that keeps growing for many years as its trunk becomes hard and thick
NewsLab news
Paper on winter drought stress in Veitch's fir (Abies veitchii) published in bsj-review
A student won an Outstanding Poster Award at the 3rd Young Researchers' Meeting on Plant–Climate Feedback
Published a commentary paper on a study of xylem morphology in lianas
A student won the Best Poster Award at the 72nd Annual Meeting of the Ecological Society of Japan
Paper from a collaborative study on the response of conifers to warming published in Canadian Journal of Forest Research
ResearchResearch themes
The lab studies how plants adapt to their environments, focusing on the mechanisms that carry water drawn up from the soil to the leaves, and on the form of roots, stems, and leaves. Using subalpine conifers, ferns, and both saplings and mature trees of woody plants as study subjects, it examines the form and function of water-conducting tissues and the changes in plant traits that accompany growth.
*Illustrative imageThe significance of changes that accompany tree growth
In woody plants, which grow over many years, the lab investigates the meaning of the various changes that occur in roots, stems, and leaves as the plant grows, focusing on the amounts of resources such as nitrogen and carbon within an individual.
*Illustrative imageWhy ferns acquired vessels
Most ferns have only tracheids, but some, such as bracken, acquired vessels independently of angiosperms. By comparing their water-conducting capacity and photosynthetic rates, the lab explores the adaptive significance of acquiring vessels.
*Illustrative imageThe form of tissues that transport water efficiently
Focusing on the diameter and length of vessels and tracheids and on the fine structure of pits, the lab investigates how differences in form and water transport among plants with different lifestyles relate to environmental adaptation.
*Illustrative imageThe balance of roots, stems, and leaves and water transport
Roots, stems, and leaves differ both in how easily water flows through them and in their roles other than water transport. Focusing on how biomass is allocated to roots, stems, and leaves, the lab examines the functions and environmental factors that determine plant form.
MembersFaculty
The members of the Taneda Lab consist of faculty, technical staff, project researchers, and doctoral students.As of 2026
- Associate ProfessorHaruhiko TanedaPublications ↗
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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: “Nikko” Ka23 13 / CC BY 4.0 (cropped)
- The significance of changes that accompany tree growth: “Pterostyrax hispidus kz03” Krzysztof Ziarnek, Kenraiz / CC BY-SA 4.0 (cropped)
- Why ferns acquired vessels: “Bracken (Pteridium aquilinum) frond unfurling” Rosser1954 / CC BY-SA 4.0 (cropped)
- The form of tissues that transport water efficiently: “Woody Dicot Stem Tangential Section Quercus 400x ( )” Berkshire Community College Bioscience Image Library / CC0 (cropped)
- The balance of roots, stems, and leaves and water transport: “Small tree with nudes roots” Lanntaron / CC BY-SA 3.0 (cropped)
- Related lab (川北篤研究室): “Bunkyou Koishikawa Botanical Greenhouse 1” 京浜にけ / CC BY 3.0 (cropped)
- Related lab (植物進化生態学研究室): “P1000491 Petunia axillaris (Solanaceae) Flower” Magnus Manske / CC BY-SA 3.0 (cropped)
- Related lab (発生進化研究室(塚谷研)): “Leaf venation of Dorstenia” SebastianBlumeArt / CC BY-SA 4.0 (cropped)
- Related lab (植物生理学研究室): “Marchantia polymorpha - Common Liverwort 03” Jasper Shide / CC0 (cropped)
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