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Plant Genetic Information Analysis Lab
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A lab that aims for new plant breeding methods, using plant epigenomes and heterosis as clues.
AboutAbout the lab
From the epigenome to new plant breeding
The Plant Genetic Information Analysis Lab studies how gene activity is regulated through the plant epigenome.
The lab investigates epigenome regulation of traits important in agriculture and of pollination and fertilization, aiming to develop new breeding technologies that use the epigenome.
Using the model plant Arabidopsis thaliana, the lab studies heterosis (hybrid vigor), in which a hybrid made by crossing two lines grows better than both parents.
The lab is one of the research groups in the Gene Research Division of the Tsukuba Plant Innovation Research Center.
Key terms
- Epigenome
- The whole set of marks that determine whether genes are switched on or off, without changing the DNA sequence itself.
- Heterosis (hybrid vigor)
- A phenomenon in which a hybrid made by crossing different lines grows more vigorously than both parents.
- Photorespiration
- A reaction in which oxygen is taken up during photosynthesis, producing ammonium and other compounds in the process.
ResearchResearch themes
The lab aims to clarify how gene expression is regulated through the plant epigenome and to develop new breeding technologies that use it. Focusing on heterosis in Arabidopsis, where hybrids grow larger than both parents, it studies the regulation of metabolism and growth.
*Illustrative imageHeterosis and changes in metabolites
The lab crossed many Arabidopsis lines and compared metabolites according to the strength of heterosis. In collaborative research, it showed that in combinations with strong heterosis, the levels of intermediate metabolites of the TCA cycle, a carbon metabolism pathway, change.
*Illustrative imageNitrogen use and photorespiration in hybrids
In Arabidopsis F1 hybrids showing heterosis, the lab studies the mechanism that reassimilates ammonium produced during photorespiration, as well as the function of glutamine synthetase.
*Illustrative imageHow hybrids tolerate drought
The lab studies the mechanism behind the tolerance to drought (osmotic) stress that is specific to Arabidopsis F1 hybrids.
*Illustrative imageGrowth regulation by the epigenome
Using the reduced growth seen in mutants lacking the met1 gene as a clue, the lab studies the mechanism of epigenetic growth regulation.
MembersFaculty
- ProfessorHiroshi Shiba
- Associate ProfessorDiana Mihaela Buzas
- Assistant ProfessorNaoya Sugi
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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: “The budding Seedling” Martin Stübler / CC BY-SA 4.0 (cropped)
- Heterosis and changes in metabolites: “Citric acid cycle with aconitate 2 ja” Narayanese, WikiUserPedia, YassineMrabet, TotoBaggins, Calvero / CC BY-SA 3.0 (cropped)
- Nitrogen use and photorespiration in hybrids: “Glutamine Synthetase” Rkott / CC BY-SA 4.0 (cropped)
- How hybrids tolerate drought: “Arabidopsis thaliana kz07” Krzysztof Ziarnek, Kenraiz / CC BY-SA 4.0 (cropped)
- Growth regulation by the epigenome: “DNA methylation” Christoph Bock, Max Planck Institute for Informatics / CC BY-SA 3.0 (cropped)
- Related lab
(作物学研究室): “Tomato cultivation in France (2)” Mouh2jijel / CC BY-SA 3.0 (cropped) - Related lab (蔬菜・花卉学研究室): “Plant tissue culture of Violces” 22Kartika / CC BY-SA 3.0 (cropped)
- Related lab (代謝ネットワーク科学研究室): “Metabolomic analyses ( )” Oak Ridge National Laboratory / CC BY 2.0 (cropped)
- Related lab (植物育種学研究室): “Cucumis melo - Диня - Український сорт Забавка” Zenon Sych / CC BY-SA 4.0 (cropped)
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