Plants affect the horizontal transmission of a new densovirus infecting the green peach aphid Myzus persicae by modulating honeydew production

In a tritrophic context of plant –insect–entomopathogen, plants play important roles in manipulating the interaction of insects and their pathogenic viruses. Currently, some studies in this field focused on baculoviruses and some RNA viruses, whereas the impact of plants on other insect viruses is largely unknown. Here, we iden tified a new densovirus infecting the green peach aphidMyzus persicae. The complete genome of this virus is 5  727 nt and contains inverted terminal repeats. Genomic organization, transcription strategy, and the phylogenetic status of the virus are distinct from other aphid densoviruses. Cabbage and pepper had no effects on the vertical transmission and saliva-mediated horizontal transmission of the virus among aphids reared on those plants (Mpc and Mpp), but substantially influenced the honeydew-mediated horizontal transmission by modulating the honeydew production. AbstractIn a tritrophic context of plant –insect–entomopathogen, plants play important roles in modulating the interaction of insects and their pathogenic viruses. Currently, the influence of plants on the transmission of insect viruses has been mainly studied on baculoviruses and some RNA viruses, whereas the impact of plants on other insect viruses is largely unknown. Here, we identified a new densovirus infecting the green peach aphidMyzus persicae and tested whether and how host plants influence the transmission of the aphid densovirus. The complete single-stranded DNA genome...

Source: Insect Science - June 28, 2023 Category: Biology Authors: Ya Guo, Yani Zhao, Yang Yang, Yahong Zhang, Yuying Li, Honggang Tian, Tong ‐Xian Liu, Zhaofei Li Tags: ORIGINAL ARTICLE Source Type: research