Transmission bottlenecks and RNAi collectively influence tick-borne flavivirus evolution.
Transmission bottlenecks and RNAi collectively influence tick-borne flavivirus evolution.
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DOI:
10.1093/ve/vew033
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发表时间:
2016-07
期刊:
影响因子:
5.3
通讯作者:
Brackney DE
中科院分区:
文献类型:
--
作者:
Grubaugh ND;Rückert C;Armstrong PM;Bransfield A;Anderson JF;Ebel GD;Brackney DE
Arthropod-borne RNA viruses exist within hosts as heterogeneous populations of viral variants and, as a result, possess great genetic plasticity. Understanding the micro-evolutionary forces shaping these viruses can provide insights into how they emerge, adapt, and persist in new and changing ecological niches. While considerable attention has been directed toward studying the population dynamics of mosquito-borne viruses, little is known about tick-borne virus populations. Therefore, using a mouse and Ixodes scapularis tick transmission model, we examined Powassan virus (POWV; Flaviviridae, Flavivirus) populations in and between both the vertebrate host and arthropod vector. We found that genetic bottlenecks, RNAi-mediated diversification, and selective constraints collectively influence POWV evolution. Together, our data provide a mechanistic explanation for the slow, long-term evolutionary trends of POWV, and suggest that all arthropod-borne viruses encounter similar selective pressures at the molecular level (i.e. RNAi), yet evolve much differently due to their unique rates and modes of transmission.
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影响因子:
3.3
作者:
Alizon S;Fraser C
通讯作者:
Fraser C
DOI:
10.4269/ajtmh.2004.71.3.0700268
发表时间:
2004-09-01
影响因子:
3.3
作者:
Ebel, GD;Kramer, LD
通讯作者:
Kramer, LD
DOI:
10.4269/ajtmh.2000.63.36
发表时间:
2000-07-01
影响因子:
3.3
作者:
Ebel, GD;Campbell, EN;Telford, SR
通讯作者:
Telford, SR
影响因子:
5.4
作者:
Fusaro, Alice;Monne, Isabella;Cattoli, Giovanni
通讯作者:
Cattoli, Giovanni
影响因子:
6.7
作者:
Brackney DE;Beane JE;Ebel GD
通讯作者:
Ebel GD