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Molecular analysis of three new Cherry mottle leaf virus isolates reveals intra-species genetic diversity and inter-species gene transfer

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Abstract

Cherry mottle leaf virus (CMLV) is a pathogen of sweet cherry and several other plant species in the genus Prunus, but only two isolates of the virus were reported previously. Here we determined the complete genome sequences of three CMLV isolates that were collected during 1980s. The coat protein of the CMLV was estimated to be about 22 kDa by protein western blot assay, and agree with the size expected based on their genome sequences. The three isolates share 78.4 to 82.7 % identities at the nucleotide sequence level between each other and 78.7 to 84.3 % identities to the two previously published CMLV isolates SA1162-21 and 95CI215. The high genome sequence divergences among the CMLV isolates were supported by phylogeny analysis. Possible inter-species gene transfer between CMLV and the other species in the genus Trichovirus was revealed by the RDP recombination analysis algorithms.

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Acknowledgments

LS was supported by the Ministry of Education of China and Agriculture and Agri-Food Canada (MOE-AAFC) joint PhD student research program.

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Authors and Affiliations

  1. College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China

    Li Su & Zhihui Cheng

  2. Agriculture and Agri-Food Canada, Summerland Research and Development Centre, Summerland, BC, V0H 1Z0, Canada

    Li Su, Basdeo Bhagwat, Mike Bernardy, Paul A. Wiersma & Yu Xiang

Authors
  1. Li Su
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  2. Basdeo Bhagwat
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  3. Mike Bernardy
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  4. Paul A. Wiersma
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  5. Zhihui Cheng
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  6. Yu Xiang
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Corresponding authors

Correspondence to Zhihui Cheng or Yu Xiang.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Online Resource 1

Supplementary materials and methods (DOCX 26 kb)

Online Resource 2

Supplementary table 1. List of DNA oligo primers for cDNA synthesis, PCR and DNA sequencing (DOCX 28 kb)

Online Resource 3

Supplementary table 2. Recombination events detected in Cherry mottle leaf virus (CMLV) and other Trichovirus species (DOCX 27 kb)

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Su, L., Bhagwat, B., Bernardy, M. et al. Molecular analysis of three new Cherry mottle leaf virus isolates reveals intra-species genetic diversity and inter-species gene transfer. Phytoparasitica 44, 571–574 (2016). https://doi.org/10.1007/s12600-016-0548-8

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  • DOI: https://doi.org/10.1007/s12600-016-0548-8

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