Aphid Viruses: A Brief View of a Long History.

Ya Guo,Lisha Bai,Zhaofei Li,Juntian Ma,Ning Ji

doi:10.3389/finsc.2022.846716

Ya Guo, Lisha Bai + Show 3 more

Open Access

https://doi.org/10.3389/finsc.2022.846716

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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.

Highlights

Viral RNA and its replication intermediates were detected in all developmental stages of aphids and all newborn nymphs collected after laid off and grew on natural tomato plants, and the virus was not integrated into the M. euphorbiae genome, suggesting that MeV1 can be transmitted vertically
We present a brief view of the aphid viruses from several aspects, which include the taxonomy of the virus, characters of the viral genome, integration of certain virus-derived sequences in aphid genomes, infection symptoms and mechanisms, as well as host range and transmission modes
Virus mining using viral transcripts or genomic sequences retrieved from the aphid genome or transcriptome data can save time spent on isolating or purifying virus particles, which usually need to collect a large scale of infected aphids

Summary

Introduction

Viral RNA and its replication intermediates were detected in all developmental stages of aphids and all newborn nymphs collected after laid off and grew on natural tomato plants, and the virus was not integrated into the M. euphorbiae genome, suggesting that MeV1 can be transmitted vertically. Classification and Characters of the Genome of Aphid Iflaviruses Iflaviruses, a group of non-enveloped, small RNA viruses with the virion size ranging from 20 to 30 nm in diameter, belong to the family Iflaviridae.

Results

Conclusion