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Photosynthetic Metabolism Regulation Lab
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The lab uses microalgae to study how photosynthetic organisms respond to the environment and how their metabolism works.
AboutAbout the lab
Exploring how photosynthetic organisms work, using microalgae
The Photosynthetic Metabolism Regulation Lab uses microalgae to study how photosynthetic organisms respond to environmental change and how their metabolism works.
The lab works with a wide range of algae, including cyanobacteria, coccolithophores, haptophytes, labyrinthulids, diatoms, golden algae (Chromophyton rosanoffii), and green algae.
The lab studies how organisms that cannot move sense environmental changes and survive, as well as how coccolithophores build their shells.
The lab's website also introduces it under the name "Plant Metabolism and Physiology Lab."
Key terms
- Two-component system
- A mechanism that detects and relays environmental changes, generally composed of a histidine kinase and a response regulator
- Coccolithophore
- A unicellular marine alga. It fixes CO2 in the ocean through photosynthesis and calcification, and has a shell composed mainly of calcium carbonate
- Coccolith
- An oval-shaped structure composed mainly of calcium carbonate that makes up the shell of a coccolithophore
NewsLab news
An undergraduate student won the Outstanding Presentation Award at the 66th Summer School for Life Sciences
A doctoral student won the Outstanding Oral Presentation Award at the 26th Annual Meeting of the Japan Society for Marine Biotechnology
A paper by a doctoral student was published in BBA - Molecular and Cell Biology of Lipids
A student studying abroad in Malaysia was recognized at a research competition at Universiti Teknologi Malaysia
A paper by a doctoral student was published in Marine Biotechnology
ResearchResearch themes
This lab conducts research using microalgae. Working with cyanobacteria, coccolithophores, haptophytes, labyrinthulids, diatoms, golden algae (Chromophyton rosanoffii), green algae, and others, it studies how photosynthetic organisms respond to the environment and how their metabolism works.
*Illustrative imageTwo-component systems that sense environmental change
Using the cyanobacterium Synechocystis, the lab studies two-component systems, which detect environmental changes and relay the signal. For the genes of two-component systems in the genome, the lab has created gene-disruption mutants wherever possible and analyzed them.
*Illustrative imageAnalysis of genes involved in fatty acid synthesis
Using the cyanobacterium Synechocystis as a base, the lab studies genes of unknown function that are involved in lipid synthesis. It makes cyanobacteria synthesize fatty acids that have been found only in some algae and bacteria, and observes the resulting phenotype.
*Illustrative imagePhotosynthesis and carbon fixation in coccolithophores
Coccolithophores are unicellular marine algae that fix CO2 in the ocean through photosynthesis and calcification. The lab works to clarify this photosynthetic carbon fixation system at the molecular level.
*Illustrative imageFormation of the coccolithophore shell, the coccolith
The lab studies how coccolithophores produce, inside the cell, their shell, the coccolith, which is composed mainly of calcium carbonate. It analyzes the biopolymers involved in its formation, with the aim of clarifying how coccolith formation is controlled.
MembersFaculty
The members of the Photosynthetic Metabolism Regulation Lab are organized into faculty, postdoctoral researchers, graduate students, undergraduate students, and professors emeritus.As of 2026
- ProfessorIwane Suzuki
- Associate ProfessorYoshiaki Maeda
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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: “Red Algae Haematococcus pluvialis 1000X” Rendodge / CC BY 4.0 (cropped)
- Two-component systems that sense environmental change: “Synechococcus cyanobacteria-cultures” Masur / Public domain (cropped)
- Analysis of genes involved in fatty acid synthesis: “Photobioreactor PBR 4000 G IGV Biotech” IGV Biotech / CC BY-SA 3.0 (cropped)
- Photosynthesis and carbon fixation in coccolithophores: “Phytoplankton Bloom in the Barents Sea (Detail) ( )” NASA Goddard Space Flight Center from Greenbelt, MD, USA / CC BY 2.0 (cropped)
- Formation of the coccolithophore shell, the coccolith: “Chalk cliffs - geograph.org.uk - 5362500” N Chadwick / CC BY-SA 2.0 (cropped)
- Related lab (Plant Molecular Physiology Lab): “ISS-56 Arabidopsis plants inside the Advanced Plant Habitat (1)” NASA / Public domain (cropped)
- Related lab (Plant Taxonomy, Phylogeny, and Evolution Lab): “Algae under microscope” Gulnazakh / CC BY-SA 4.0 (cropped)
- Related lab (Plant Molecular Biology Lab): “Watering small tomato plants in a greenhouse” Shixart1985 / CC BY 2.0 (cropped)
- Related lab (Eukaryotic Microbial Genomics Lab (Shigekatsu Suzuki)): “Diatoms through the microscope” Prof. Gordon T. Taylor, Stony Brook University / Public domain (cropped)
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