Advances in Understanding Begomovirus Satellites
文献类型: 外文期刊
第一作者: Zhou, Xueping
作者: Zhou, Xueping
作者机构:
关键词: geminivirus;Begomovirus;betasatellite;alphasatellite;pathogenesis;PTGS;TGS
期刊名称:ANNUAL REVIEW OF PHYTOPATHOLOGY, VOL 51 ( 影响因子:13.078; 五年影响因子:17.0 )
ISSN: 0066-4286
年卷期: 2013 年 51 卷
页码:
收录情况: SCI
摘要: Begomoviruses are numerous and geographically widespread viruses that cause devastating diseases in many crops. Monopartite begomoviruses are frequently associated with betasatellites or alphasatellites. Both betasatellite and alphasatellite DNA genomes are approximately half the size of begomovirus DNA genomes. Betasatellites are essential for induction of typical disease symptoms. The beta C1 genes encoded by the betasatellites have important roles in symptom induction, in suppression of transcriptional and posttranscriptional gene silencing, and they can affect jasmonic acid responsive genes. Host plants of begomoviruses have evolved diverse innate defense mechanisms against the beta C1 protein to counter these challenges. Alphasatellites have been identified mainly in monopartite begomoviruses that associate with betasatellites and have no known contributions to pathogenesis of begomovirus-betasatellite disease complexes. Applications of current molecular tools are facilitating viral diagnosis and the discovery of novel species of geminiviruses and satellite DNAs and are also advancing our understanding of the global diversity and evolution of satellite DNAs.
分类号: Plant Sciences
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