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Background <p>Although advances in metagenomics, viral diversity and non-retroviral endogenous viral elements (EVEs) in wheat aphids remain underexplored. By analyzing 470 publicly available datasets and one laboratory-generated transcriptome, the RNA virome and EVEs in the genomes of <i>Sitobion avenae</i>, <i>Schizaphis graminum</i>, and <i>Rhopalosiphum padi</i> were systematically investigated.</p> Results <p>We identified 43 RNA viruses, including 12 novel and 31 known RNA viruses. These viruses were widely distributed and abundant in different geographic populations of three wheat aphid species. +ssRNA viruses were the dominant type of aphid viruses. Besides, 90 EVEs were discovered in the genomes of three aphid species. In addition, the EVEs exhibit potential domestication and novel functional roles within aphid genomes.</p> Conclusions <p>This study expands the understanding of RNA virus diversity in aphids and provides valuable insights into the potential functions of EVEs in virus-host coevolution.</p>

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Diversity and evolution analysis of RNA viruses in three wheat aphid species

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月7日

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  • Ke-Hui Feng,
  • Yu-Hua Qi,
  • Zhuang-Xin Ye,
  • Ting Li,
  • Gao-Yang Jiao,
  • Chuan-Xi Zhang,
  • Jian-Ping Chen,
  • Gang Lu,
  • Jun-Min Li

摘要

Background

Although advances in metagenomics, viral diversity and non-retroviral endogenous viral elements (EVEs) in wheat aphids remain underexplored. By analyzing 470 publicly available datasets and one laboratory-generated transcriptome, the RNA virome and EVEs in the genomes of Sitobion avenae, Schizaphis graminum, and Rhopalosiphum padi were systematically investigated.

Results

We identified 43 RNA viruses, including 12 novel and 31 known RNA viruses. These viruses were widely distributed and abundant in different geographic populations of three wheat aphid species. +ssRNA viruses were the dominant type of aphid viruses. Besides, 90 EVEs were discovered in the genomes of three aphid species. In addition, the EVEs exhibit potential domestication and novel functional roles within aphid genomes.

Conclusions

This study expands the understanding of RNA virus diversity in aphids and provides valuable insights into the potential functions of EVEs in virus-host coevolution.