Molecular basis of activation of plant immune system by atomasphic plasma irradiation and its application to plant disease control

KAKEN

About This Project

Japan Grant Number
JP16K14858 (JGN)
Funding Program
Grants-in-Aid for Scientific Research
Funding Organization
Japan Society for the Promotion of Science

Kakenhi Information

Project/Area Number
16K14858
Research Category
Grant-in-Aid for Challenging Exploratory Research
Allocation Type
  • Multi-year Fund
Review Section / Research Field
  • Biological Sciences > Agriculture > Plant production and environmental agriculture > Plant protection science
Research Institution
  • Tohoku University
Project Period (FY)
2016-04-01 〜 2020-03-31
Project Status
Completed
Budget Amount*help
3,640,000 Yen (Direct Cost: 2,800,000 Yen Indirect Cost: 840,000 Yen)

Research Abstract

When rice seeds were irradiated with atmospheric plasma, the occurrence of "Bakanae disease" and bacterial damping-off disease in rice seedlings was suppressed. Irradiation of Arabidopsis thaliana with plasma reduced the level of virus multiplication. It has been known that reactive oxygen species act as a signaling molecule for plant immune system. Interestingly, the comprehensive analysis of reactive molecules produced by atmospheric plasma irradiation indicated that peroxynitrite (HOONO) and pernitric acid (HOONO2), which have antimicrobial activity, and N2O5 accumulated in gas phase, and NO3- was detected in liquid phase. Furthermore, in plants irradiated with atmospheric plasma, defense-related gene expression: PR1, PDF1.2 and ChiB, was significantly induced, suggesting that plant immune system seems to be activated by irradiation of plants with atmospheric plasma.

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