Document Detail

Genetic structure and population variability of tomato yellow leaf curl China virus.
MedLine Citation:
PMID:  17376922     Owner:  NLM     Status:  MEDLINE    
Geminiviruses have circular single-stranded DNA genomes and are important pathogens in tropical and subtropical regions, but their population diversity and variability are poorly understood. Here, we have investigated variations accumulating in Tomato yellow leaf curl China virus (TYLCCNV), a geminivirus in the genus Begomovirus of the family Geminiviridae. The population variation was analyzed in a naturally infected tomato (Solanum lycopersicom) plant and in Nicotiana benthamiana and tomato plants experimentally infected with a swarm of TYLCCNV DNA clones to provide an identical sequence for initiation of infection. Our results demonstrate that the population of TYLCCNV in a naturally infected tomato plant was genetically heterogeneous and that rapid mutation occurred in the populations amplified from N. benthamiana and tomato plants that had been infected with cloned DNA. This feature of the population of TYLCCNV in these plants consisted of the consensus sequence and a pool of mutants that are not identical but are closely related to the consensus sequence, and it coincides with the quasispecies concept described for many RNA viruses. The mutation frequency was circa 10(-4) in N. benthamiana and tomato at 60 days postinoculation, a value comparable to that reported for plant RNA viruses. The quasispecies-like nature of the TYLCCNV populations suggested that TYLCCNV is capable of rapid evolution and adaptation in response to changing agricultural practices.
Linmei Ge; Jiangtao Zhang; Xueping Zhou; Hongye Li
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-03-21
Journal Detail:
Title:  Journal of virology     Volume:  81     ISSN:  0022-538X     ISO Abbreviation:  J. Virol.     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-05-14     Completed Date:  2007-07-12     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  0113724     Medline TA:  J Virol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5902-7     Citation Subset:  IM    
Institute of Biotechnology, Zhejiang University, Hangzhou 310029, People's Republic of China.
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MeSH Terms
Amino Acid Substitution / genetics
Begomovirus / genetics*
Evolution, Molecular
Genetic Heterogeneity*
Genetics, Population*
Lycopersicon esculentum / virology
Tobacco / virology

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