| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2017: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
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| Outline of Final Research Achievements |
The apoplastic barrier is the structure that separates the inside from the outside of the plant. Apoplastic barrier is composed of lignin (Casparian strip) and suberin composed of lipids. These are the cell wall structure of root endodermal and exodermal cells and form the barrier. However, the mechanism of their formation and their physiological roles remain largely unknown. In this study, using Arabidopsis thaliana, I analyzed genes directly regulated by MYB36, a master regulator of Casparian strip formation, and identified genes that play important functions in the subcellular localization of CASP1, a protein that serves as an important scaffold for Casparian strip formation. I also found that Casparian strip (apoplastic barrier) formation is regulated by low nutrition (potassium) and that this regulation is mediated by MYB36.
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