期刊
VIROLOGY
卷 404, 期 2, 页码 279-283出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.virol.2010.05.017
关键词
Genetic drift; Population diversity; Plant virus; Virus movement; Virus evolution
类别
资金
- Samuel Roberts Noble Foundation
Genetic bottlenecks are stochastic events that narrow variation in a population. We compared bottlenecks during the systemic infection of Cucumber mosaic virus (CMV) in four host plants. We mechanically inoculated an artificial population of twelve CMV mutants to young leaves of tomato, pepper, Nicotiana benthamiana, and squash. The inoculated leaves and primary and secondary systemically infected leaves were sampled at 2, 10, and 15 days post-inoculation. All twelve mutants were detected in all of the inoculated leaves. The number of mutants recovered from the systemically infected leaves of all host species was reduced significantly, indicating bottlenecks in systemic movement. The recovery frequencies of a few of the mutants were significantly different in each host probably clue to host-specific selective forces. These results have implications for the differences in virus population variation that is seen in different host plants. (C) 2010 Elsevier Inc. All rights reserved.
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