Identification and characterization of a novel geminivirus with a monopartite genome infecting apple trees

文献类型： 外文期刊

第一作者： Zhang, Zhixiang

作者： Zhang, Zhixiang;Lu, Meiguang;Xiao, Hong;Zhou, Xueping;Li, Shifang;Liang, Pengbo;Wang, Hongqing;Navarro, Beatriz;Di Serio, Francesco;Wu, Qingfa

作者机构：

期刊名称：JOURNAL OF GENERAL VIROLOGY （ 影响因子：3.891； 五年影响因子：3.719 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： A novel circular DNA virus sequence has been identified through next-generation sequencing and in silico assembly of small RNAs of 21-24 nt from an apple tree grown in China. The virus genome was cloned using two independent approaches and sequenced. With a size of 2932 nt, it showed the same genomic structure and conserved origin of replication reported for members of the family Geminiviridae. However, the low nucleotide and amino acid sequence identity with known geminiviruses indicated that it was a novel virus, for which the provisional name apple geminivirus (AGV) is proposed. Rolling circle amplification followed by RFLP analyses indicated that AGV was a virus with a monopartite DNA genome. This result was in line with bioassays showing that the cloned viral genome was infectious in several herbaceous plants (Nicotiana bethamiana, Nicotiana glutinosa and Solanum lycopersicum), thus confirming it was complete and biologically active, although no symptoms were observed in these experimental hosts. AGV genome structure and phylogenetic analyses did not support the inclusion of this novel species in any of the established genera in the family Geminiviridae. A survey of 165 apple trees grown in four Chinese provinces showed a prevalence of 7.2 % for AGV, confirming its presence in several cultivars and geographical areas in China, although no obvious relationship between virus infection and specific symptoms was found.

分类号： R37

  • 相关文献
作者其他论文 更多>>

微信小程序