Biochemical and genetic analysis of a control mechanism for shoot branching

• Project/Area Number: 22580108
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied biochemistry
• Research Institution: Meijo University
• Principal Investigator: MORIKAMI Atsushi 名城大学, 農学部, 教授 (10211608)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 遺伝子 / 植物 / 形作り / 枝分かれ / 脂質 / 形態形成 / 遺伝子発現 / 極長鎖脂肪酸 / 枝わかれ

Research Abstract

By screening an activation tagging library, we isolated an Arabidopsis mutant,chestnut, which has a severe bushy phenotype resulting from the formation ofextra-axillary meristems. Compared to the Col-0 wild type, chestnut showed a 10-30-fold increase in the expression of a transcription factor gene than. The mutation in chestnut leads to the upregulation of PR1 genes, which are required for plant defense responses. This result suggests that the defense responses of plants and the formation of axillary meristems might share some common factors.