Aphid Viruses: A Brief View of a Long History

Abstract

Aphids are common agricultural pests with a wide range of hosts from agriculture to forestry plants. As known, aphids also serve as the major vectors to transmit plant viruses. Although numerous studies have focused on interactions between aphids and plant viruses, little is known about the aphid viruses, i.e., the insect viruses that are infectious to aphids. In the past four decades, several aphid viruses have been identified in diverse aphid species. In this review, we present a brief view of the aphid pathogenic viruses from several aspects, including classification of aphid viruses and characters of the viral genome, integration of viral sequences in host genomes, infection symptoms and influence on aphids, as well as host range and transmission modes. Taken together, these studies have increased our understanding of the rarely known aphid viruses, and will potentially contribute to the development of new strategies for controlling aphid populations.

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

“…Currently, only a few densoviruses that infect aphids were identified (Guo et al. , 2022). The influence of plants on the interaction of these viruses with their host aphids are not clear.…”

“…Most of them infect blattarian, dipteran, hemipteran, hymenopteran, lepidopteran, and orthopteran insects and cause negative impact on hosts fitness (Tijssen et al, 2016;Cotmore et al, 2019). Currently, only a few densoviruses that infect aphids were identified (Guo et al, 2022). The influence of plants on the interaction of these viruses with their host aphids are not clear.…”

“…Although MpDV2 shares about 98% nucleotide sequence identity with the genome sequences of MpDV1 and MpnDV in the coverage region, the genomic organization and transcription strategy of MpDV2 are distinct from that of the other 2 viruses (Figs. 1, 2) (van Munster et al, 2003a;Tang et al, 2016;Guo et al, 2022). The genome of MpDV2 contains 3 introns and 4 ORFs.…”

“…Currently, quite a lot is known about the densovirus of aphids (Guo et al. , 2022). Prior studies identified a few densoviruses in the rosy apple aphid Dysaphis plantageinea ( D. plantageinea densovirus 1 and 2, DplDV1, DplDV2) (Ryabov et al.…”

“…Currently, quite a lot is known about the densovirus of aphids (Guo et al, 2022). Prior studies identified a few densoviruses in the rosy apple aphid Dysaphis plantageinea (D. plantageinea densovirus 1 and 2, DplDV1, DplDV2) (Ryabov et al, 2009), the green peach aphid Myzus persicae (M. persicae densovirus 1, MpDV1) (van Munster et al, 2003a), the tobacco aphid M. persicae subsp.…”