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Deep sequencing reveals the first fabavirus infecting peach
Yan He1,2,3, Li Cai1,2,3, Lingling Zhou1,2,3
1State Key Laboratory of Agricultural Microbiology, Wuhan, Hubei, 430070, P.R. China.
Scientific Reports
|September 14, 2017
Summary
A novel virus, Peach leaf pitting-associated virus (PLPaV), was discovered in peach trees suffering from fruit disease. This finding expands our understanding of virus-induced peach diseases.
Area of Science:
- Plant Pathology
- Virology
- Molecular Biology
Background:
- Peach trees (Prunus persica) are affected by a disease causing smaller, cracked fruit, leading to yield and quality losses.
- Viral pathogens are suspected causes of these detrimental effects on peach production.
Purpose of the Study:
- To identify the viral pathogens responsible for disease symptoms in peach trees.
- To characterize a newly discovered virus and its phylogenetic relationship to known viruses.
Main Methods:
- Deep sequencing of small RNAs from symptomatic peach leaves.
- Phylogenetic analysis of the RNA-dependent RNA polymerase gene.
- Biological assays using GF305 peach indicator seedlings.
Main Results:
- Identification of two known viroids and two known viruses.
- Discovery and provisional naming of a novel virus, Peach leaf pitting-associated virus (PLPaV).
- Phylogenetic analysis placed PLPaV in the genus Fabavirus, family Secoviridae.
- PLPaV infection induced leaf-pitting symptoms, distinct from the observed fruit symptoms.
Conclusions:
- This is the first report of a fabavirus infecting peach trees.
- PLPaV exhibits unique molecular and biological characteristics, advancing the knowledge of fabaviruses.
- The identified viruses and viroids contribute to a comprehensive understanding of peach tree diseases.
