Discovery of Four Novel Viruses Associated with Flower Yellowing Disease of Green Sichuan Pepper () by Virome Analysis

Overview

Journal Viruses

Publisher MDPI

Specialty Microbiology

Date 2019 Aug 3

PMID 31370205

Citations 19

Authors

Mengji Cao

Song Zhang

Min Li

Yingjie Liu

Peng Dong

Shanrong Li

Mi Kuang

Ruhui Li

Yan Zhou

Affiliations

Soon will be listed here.

Abstract

An emerging virus-like flower yellowing disease (FYD) of green Sichuan pepper ( v. ) has been recently reported. Four new RNA viruses were discovered in the FYD-affected plant by the virome analysis using high-throughput sequencing of transcriptome and small RNAs. The complete genomes were determined, and based on the sequence and phylogenetic analysis, they are considered to be new members of the genera (), (unassigned), (), and (), respectively. Therefore, the tentative names corresponding to these viruses are green Sichuan pepper-nepovirus (GSPNeV), -idaeovirus (GSPIV), -enamovirus (GSPEV), and -nucleorhabdovirus (GSPNuV). The viral population analysis showed that GSPNeV and GSPIV were dominant in the virome. The small RNA profiles of these viruses are in accordance with the typical virus-plant interaction model for . Rapid and sensitive RT-PCR assays were developed for viral detection, and used to access the geographical distributions. The results revealed a correlation between GSPNeV and the FYD. The viruses pose potential threats to the normal production of green Sichuan pepper in the affected areas due to their natural transmission and wide spread in fields. Collectively, our results provide useful information regarding taxonomy, transmission and pathogenicity of the viruses as well as management of the FYD.

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