Expanding known viral diversity in plants: virome of 161 species alongside an ancient canal

Author:

Yang Shixing,Mao Qingqing,Wang Yan,He Jingxian,Yang Jie,Chen Xu,Xiao Yuqing,He Yumin,Zhao Min,Lu Juan,Yang Zijun,Dai Ziyuan,Liu Qi,Yao Yuxin,Lu Xiang,Li Hong,Zhou Rui,Zeng Jian,Li Wang,Zhou Chenglin,Wang Xiaochun,Shen Quan,Xu Hui,Deng Xutao,Delwart Eric,Shan Tongling,Zhang Wen

Abstract

Abstract Background Since viral metagenomic approach was applied to discover plant viruses for the first time in 2006, many plant viruses had been identified from cultivated and non-cultivated plants. These previous researches exposed that the viral communities (virome) of plants have still largely uncharacterized. Here, we investigated the virome in 161 species belonging to 38 plant orders found in a riverside ecosystem. Results We identified 245 distinct plant-associated virus genomes (88 DNA and 157 RNA viruses) belonging to 27 known viral families, orders, or unclassified virus groups. Some viral genomes were sufficiently divergent to comprise new species, genera, families, or even orders. Some groups of viruses were detected that currently are only known to infect organisms other than plants. It indicates a wider host range for members of these clades than previously recognized theoretically. We cannot rule out that some viruses could be from plant contaminating organisms, although some methods were taken to get rid of them as much as possible. The same viral species could be found in different plants and co-infections were common. Conclusions Our data describe a complex viral community within a single plant ecosystem and expand our understanding of plant-associated viral diversity and their possible host ranges.

Funder

Independent Project of Chengdu Research of Giant Panda Breeding

National Key Research and Development Program of China

Jiangsu Provincial Key Research and Development Program

Publisher

Springer Science and Business Media LLC

Subject

Genetics,Applied Microbiology and Biotechnology,Microbiology

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