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Biological Genetic Information Lab
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The lab explores root spread through genes, aiming for tolerant varieties.
AboutAbout the lab
Using genetic information to aim for drought-tolerant varieties.
The Biological Genetic Information Lab aims to understand the relationship between genetic information and useful traits, and to use that knowledge to breed tolerant crop varieties.
Under drought, plants try to maintain shoot growth by expanding their root zone, but this ability differs greatly among varieties.
To clarify the genetic mechanisms of root system formation that cause this difference, the lab conducts research using rice.
Key terms
- Root zone
- The area over which a plant's roots spread. Under drought, varieties differ in their ability to expand it.
- Lateral root primordium
- The part from which a lateral root (a root that grows sideways) develops, at a stage before the root has fully formed.
- Auxin
- A type of plant hormone. When it accumulates in lateral root primordia, genes involved in expanding the root zone begin to act.
NewsLab news
A master's student won an Outstanding Presentation Award at the master's thesis review session of the Department of Plant Production Science
A student won an Outstanding Presentation Award at the Rice Genetics and Molecular Biology Workshop 2024
ResearchResearch themes
The lab aims to understand the relationship between genetic information and useful traits, and to apply that knowledge to breeding tolerant crop varieties. Focusing on differences in root system formation under drought, it investigates the genetic mechanisms involved.
*Illustrative imageVarietal differences in root system formation under drought
Under drought stress, plants expand their root zone to avoid water shortage and try to maintain shoot growth. This ability differs greatly among varieties, and the lab aims to clarify the genetic mechanisms of root system formation that cause the difference.
*Illustrative imageGenes that control the spread of the root zone
When water is sufficient, the QHB/OsWOX5 gene prevents the root zone from expanding. Under drought, auxin accumulating in lateral root primordia induces expression of the OsWOX10 gene, which promotes expansion. The lab says that much remains unknown about how auxin accumulates and about the downstream genes.
MembersFaculty
- ProfessorYoshiaki Inukai
VoicesStudent voices
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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: “Blond and green rice fields” Basile Morin / CC BY-SA 4.0 (cropped)
- Varietal differences in root system formation under drought: “Snake plant root system, balcony garden” Alok Saldanha / CC BY-SA 4.0 (cropped)
- Genes that control the spread of the root zone: “Root tip” Clematis / CC BY-SA 2.5 (cropped)
- Related lab (熱帯生物資源): “Young rice seedlings in muddy rice field, Indonesia” Undeka 11 / CC BY-SA 4.0 (cropped)
- Related lab (実践アジア開発): “Rural Cambodia” Peter Beardsley from Kittery, ME, USA / CC BY 2.0 (cropped)
- Related lab (実践アフリカ開発): “Rice field DRC” Abdoulma / CC BY-SA 4.0 (cropped)
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