Close evolutionary relationship between rice black-streaked dwarf virus and southern rice black-streaked dwarf virus based on analysis of their bicistronic RNAs.
Virol J
; 16(1): 53, 2019 04 27.
Article
em En
| MEDLINE
| ID: mdl-31029143
ABSTRACT
BACKGROUND:
Rice black-streaked dwarf virus (RBSDV) and Southern rice black-streaked dwarf virus (SRBSDV) seriously interfered in the production of rice and maize in China. These two viruses are members of the genus Fijivirus in the family Reoviridae and can cause similar dwarf symptoms in rice. Although some studies have reported the phylogenetic analysis on RBSDV or SRBSDV, the evolutionary relationship between these viruses is scarce.METHODS:
In this study, we analyzed the evolutionary relationships between RBSDV and SRBSDV based on the data from the analysis of codon usage, RNA recombination and phylogenetic relationship, selection pressure and genetic characteristics of the bicistronic RNAs (S5, S7 and S9).RESULTS:
RBSDV and SRBSDV showed similar patterns of codon preference open reading frames (ORFs) in S7 and S5 had with higher and lower codon usage bias, respectively. Some isolates from RBSDV and SRBSDV formed a clade in the phylogenetic tree of S7 and S9. In addition, some recombination events in S9 occurred between RBSDV and SRBSDV.CONCLUSIONS:
Our results suggest close evolutionary relationships between RBSDV and SRBSDV. Selection pressure, gene flow, and neutrality tests also supported the evolutionary relationships.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Vírus de Plantas
/
Reoviridae
/
RNA Viral
/
Evolução Molecular
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article