Effects of light quality on abscisic acid, ethylene metabolism and anthocyanin synthesis in grapes

2015 Fiscal Year Final Research Report

• Project/Area Number: 25450041
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Horticultural science
• Research Institution: Chiba University
• Principal Investigator: Kondo Satoru 千葉大学, 園芸学研究科, 教授 (70264918)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: アブシシン酸 / ブドウ / 青色LED / アントシアニン

Outline of Final Research Achievements

The effects of red- and blue-light irradiation at night on abscisic acid (ABA) synthesis and anthocyanin and sugar concentrations were examined in grape vines, which were grown in two different seasons. In grapes cultivated with early heating, the ABA concentrations were highest in blue-light-emitting diode (LED)-treated skin; however, those in grapes cultivated in the ordinary growing season were highest in red-LED-treated skin. The expressions of 9-cis-epoxycarotenoid dioxygenase (VvNCED1) and ABA 8'-hydroxylase (VvCYP707A1) were high in each treatment at veraison regardless of the growing season. In both seasons, anthocyanin concentrations were highest under the blue-LED treatment, followed by the red-LED treatment. The expressions of VlMYBA1-2, VlMYBA2, and VvUFGT coincided with anthocyanin concentrations. Sugar concentrations were increased by the blue-or red-LED treatment dependent on the growing season.

Free Research Field

果樹生理学