Molecular mechanism of controlling floral initiation in mango.

• Project/Area Number: 25450049
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Horticultural science
• Research Institution: Kinki University
• Principal Investigator: KANZAKI Shinya 近畿大学, 農学部, 准教授 (20330243)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 花成誘導 / FT遺伝子 / 花成 / マンゴー / ジベレリン

Outline of Final Research Achievements

This study was conducted to analyze the expression pattern of MiFT, which is a main factor for floral induction in Mango, to investigate the effect of endogenous and exogenous factors on floral induction and expression of MiFT, and to analyze the floral related genes other than MiFT. It was revealed that experiencing cool temperature below 15℃ for 130 hours was enough to increase the expression of MiFT in mango. It was also revealed that expression of MiFT in young leaves was lower than old leaves. In addition, some genes that showed down- or up-regulation by the floral-inductive cool temperature in mango leaves were obtained. These genes are under investigation.