Study on new techniques of environmental control for production of high functional root crops applying oxygen stresses

2014 Fiscal Year Final Research Report

• Project/Area Number: 24580371
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Agricultural environmental engineering
• Research Institution: Kyushu University
• Principal Investigator: EGUCHI Toshihiko 九州大学, 生物環境利用推進センター, 准教授 (40213540)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 根菜類 / 環境制御 / 酸素ストレス / 抗酸化物質 / 機能性強化

Outline of Final Research Achievements

This study aimed to develop new techniques of environmental control for production of high functional root crops on the plant-physiological basis that antioxidant synthesis is activated to eliminate reactive oxygen species (ROS) generated under slight oxygen deficiency.
Short-term gas exchange inhibition, which might generate ROS, applied to sweetpotato tuberous roots. The treatment increased α-tocopherol content in the tuberous root without inhibition of the root thickening. Electrolyte leakage from the tuberous root cells showed that the treatment caused slight stress within the roots. Short-term high temperature treatment applied to the tuberous root also caused the similar stress within the roots. From these results, environmental control techniques that cause slight oxygen stress temporarily in the storage organs of root crops are considered to be practical for production of high value root crops that contain high antioxidant content.

Free Research Field

農学