2013 Fiscal Year Final Research Report

Regulation of IPT gene under control of senescence activated promoter

Research Project

Project/Area Number	23780025
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Horticulture/Landscape architecture
Research Institution	Okayama University
Principal Investigator	NAKANO Ryohei 岡山大学, その他の研究科, 准教授 (70294444)
Co-Investigator(Renkei-kenkyūsha)	KUBO Yasutaka 岡山大学, 環境生命科学研究科, 教授 (80167387) USHIJIMA Koichiro 岡山大学, 環境生命科学研究科, 助教 (20379720)
Project Period (FY)	2011 – 2013
Keywords	サイトカイニン / 老化特異的プロモーター / ITP / 花持ち
Research Abstract	Chimeric gene that induced cytokinin biosynthesis regulating gene IPT under the control of senescence activated promoter PSARK (PSARK-IPT) was introduced into floricultural plants such as petunia and chrysanthemum and their shelf-life were observed. As results, in 'Seikonomakoto' chrysanthemum which has a problem of leaf-yellowing during storage and transportation, cut flowers harvested from PSARK-IPT introduced trangenic plants showed markedly delayed leaf-yellowing. They also showed delayed leaf-senescence even under dark condition and ethylene exposure. These results provide valuable information for breeding floricultural plants with stress-tolerance and long-self life that would lead to low cost, energy saving and economical transportation.

(1 results)