2021 Fiscal Year Final Research Report
Development of ultrasonic treatment technology for cultivation of plant with high temperature tolerance
Project/Area Number |
19K06014
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 39030:Horticultural science-related
|
Research Institution | Shizuoka University |
Principal Investigator |
|
Project Period (FY) |
2019-04-01 – 2022-03-31
|
Keywords | ストレス耐性 / 安定生産 / 超音波 / 育苗技術 / 種子プライミング |
Outline of Final Research Achievements |
We found that ultrasonic treatment to seed could improve the high temperature tolerance of plants. When leafy vegetables whose high temperature resistance was improved by sonication were tested and their antioxidant response was investigated, it was clarified that the SOD activity involved in the initial response under high temperature conditions was higher by sonication. This SOD is an enzyme that metabolizes superoxide anion that temporarily increases in seed embryos with water absorption, and the SOD activity was high in sonicated treatments. On the other hand, in crops to which sonication had an adverse effect, cracks were confirmed in the seed coat and the germination rate also decreased. This decrease is particularly remarkable under excessive water conditions, and it is necessary to consider a treatment method for each crop that maintains the water absorption balance during seed germination.
|
Free Research Field |
野菜園芸学
|
Academic Significance and Societal Importance of the Research Achievements |
近年の異常気象は作物の安定生産を脅かし,温暖化対策は産地の維持にも関わる重要な課題である.このような事態に対応するため,生産体系の高度化が進められてきたが,施設化による対策には限界がある.そこで,ストレスに強い作物を利用することが求められるが,遺伝子組み換え作物やゲノム編集技術の利用にはもうしばらく時間が必要であるため,比較的容易に作物の機能を向上できる技術として超音波処理による作物の機能向上は意義深い.この技術は,播種時に一度処理するのみでストレス耐性を向上できるため,他のバイオスティミュラント技術に比べ容易に耐性を向上させ,ノンケミカルな処理であることからその汎用性が大きい技術である.
|