Challenge to uncovering the UV-B receptor in rice

• Project/Area Number: 24657037
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Plant molecular biology/Plant physiology
• Research Institution: Osaka City University
• Principal Investigator: IINO Moritoshi 大阪市立大学, 大学院理学研究科, 教授 (50176054)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: イネ / 紫外線B / 受容体 / 突然変異体

Outline of Final Research Achievements

We demonstrated genetically and physiologically that japonica rice has a UV-B specific signaling system with which coleoptile growth inhibition and anthocyanin accumulation (in purple strains) are induced. In addition, it was shown that these UV-B-specific responses are weakened in indica rice strains. Furthermore, expression of some genes was found to be regulated in parallel to these physiological responses.

Research Products

• [Journal Article] Identification of rice Allene Oxide Cyclase mutants and the function of jasmonate for defence against Magnaporthe oryzae (2013)
  • Author(s): Riemann, M., Haga, K., Shimizu, T., Okada, K., Ando, S., Mochizuki, S., Nishizawa, Y., Yamanouchi, U., Nick, P., Yano, M., Minami, E., Takano, M., Yamane, H., and Iino, M.
  • Journal Title: The Plant Journal Volume: 74 Issue: 2 Pages: 226-238
  • DOI: 10.1111/tpj.12115
  • Peer Reviewed
• [Journal Article] AtLAZY1 is a signaling component required for gravitropism of the Arabidopsis thaliana inflorescence. (2013)
  • Author(s): Yoshihara, T., Spalding, E.P., Iino, M.
  • Journal Title: The Plant Journal Volume: 74 Issue: 2 Pages: 267-279
  • DOI: 10.1111/tpj.12118
  • Peer Reviewed
• [Presentation] UV-B-specific photomorphogenesis in rice and different UV-B responsiveness between japonica and indica cultivars (2014)
  • Author(s): Jiang, L., Iino, M.
  • Organizer: 第18回日本光生物学協会年会
  • Place of Presentation: 大阪市立大学（大阪府大阪市）
  • Year and Date: 2014-08-22
• [Presentation] UV-B-specific photomorphogenesis in rice and different responsiveness between japonica and indica rice.
  • Author(s): Jiang, L., Iino, M.
  • Organizer: The 6th Asia and Oceania Conference on Photobiology
  • Place of Presentation: シドニー, オーストラリア
  • Invited