Damage from ultraviolet radiation and its protection and repair mechanisms in plant-dwelling mites
Description: To contribute the development of a novel mite management technology using UVB radiation in greenhouse, we demonstrated 1) molecular mechanisms of UV damage and 2) protective function by antioxidants. With regard to 1), the interrelation between the accumulation of DNA lesion and mortality and photoreactivation were proven. Larvae exposed to UVB radiation died mostly at their protochrysalis stages. Structural protein genes were downregulated in damaged individuals at protochrysalis stage. We also found that low temperature enhanced control effects of UVB irradiation on spider mites. In 2), carotenoids contained in spider mite bodies were identified, and its protective function preventing from lipid peroxide accumulation was demonstrated. Moreover, it was demonstrated that a phytoseiid mite (natural enemy) received the protective effects by antioxidant compounds through pollen diet.
Amount: ¥16,120,000
Funding type: research
Funder scheme: Grant-in-Aid for Scientific Research (B)
Start date: 2014-04-01
End date: 2018-03-31
Investigator: Masahiro Osakabe
Institution: Kyoto University
Funded outputs count: 11
Funder award ID: 26292029
OpenAlex ID: G6281799286