Effect of plant phenolic compounds on the hemocyte concentration and antioxidant enzyme activity in Hyphantria cunea (Drury, 1773) (Lepidoptera: Arctiidae) larvae infected by Hyphantria cunea granulovirus(1)

The aim of this study was to determine the effects of phenolic substances of four plants (apple, mulberry, plum and walnut) on hemocyte concentrations and antioxidant enzyme activity of Hyphantria cunea (Drury, 1773) (Lepidoptera: Arctiidae) larvae infected with Hyphantria cunea granulovirus and uninfected. The plants used in this study were collected in Bafra, Samsun, Turkey in 2019. The phenolic concentrations of the leaves of these plants were determined. Then, the effect of these phenolic on hemocyte concentrations and antioxidant enzyme activity of infected and uninfected larvae were determined. The hemocyte concentrations of all groups increased with virus infection. The concentration of malondialdehyde decreased in all groups as a result of viral infection. The highest superoxide dismutase and catalase activities among both infected and uninfected larvae were in the plum groups with the highest concentration of chlorogenic acid, the lowest glutathione peroxidase activity was also in these groups. All this showed that different phenolic concentrations of host plants affected the hemocyte concentrations and antioxidant enzyme activity of H. cunea larvae. Ondokuz Mayis University Research Foundation Turkey