Rabies virus diversification in aerial and terrestrial mammals.

Abstract:

:Rabies is a fatal zoonotic infection of the central nervous system of mammals and has been known to humans for millennia. The etiological agent, is a neurotropic RNA virus in the order Mononegavirales, family Rhabdoviridae, genus Lyssavirus. There are currently accepted to be two cycles for rabies transmission: the urban cycle and the sylvatic cycle. The fact that both cycles originated from a common RABV or lyssavirus ancestor and the adaptive divergence that occurred since then as this ancestor virus adapted to a wide range of fitness landscapes represented by reservoir species in the orders Carnivora and Chiroptera led to the emergence of the diverse RABV lineages currently found in the sylvatic and urban cycles. Here we study full genome phylogenies and the time to the most recent common ancestor (TMRCA) of the RABVs in the sylvatic and urban cycles. Results show that there were differences between the nucleotide substitution rates per site per year for the same RABV genes maintained independently in the urban and sylvatic cycles. The results identify the most suitable gene for phylogenetic analysis, heterotachy among RABV genes and the TMRCA for the two cycles.

journal_name

Genet Mol Biol

authors

Oliveira RN,Freire CC,Iamarino A,Zanotto PM,Pessoa R,Sanabani SS,Souza SP,Castilho JG,Batista HBCR,Carnieli P Jr,Macedo CI,Watanabe JT,Brandão PE

doi

10.1590/1678-4685-GMB-2019-0370

subject

Has Abstract

pub_date

2020-07-31 00:00:00

pages

e20190370

issue

3

eissn

1415-4757

issn

1678-4685

pii

S1415-47572020000500601

journal_volume

43

pub_type

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