Please use this identifier to cite or link to this item: https://doi.org/10.1023/A:1008034807216
Title: Phylogenetic analysis of triple gene block viruses based on the TGB 1 homolog gene indicates a convergent evolution
Authors: Wong, S.-M. 
Lee, K.-C. 
Yu, H.-H.
Leong, W.-F.
Keywords: Carlavirus
Cymbidium mosaic potexvirus
Furovirus
Hordeivirus
Phylogeny
Potexvirus
Triple gene block
Issue Date: 1998
Citation: Wong, S.-M., Lee, K.-C., Yu, H.-H., Leong, W.-F. (1998). Phylogenetic analysis of triple gene block viruses based on the TGB 1 homolog gene indicates a convergent evolution. Virus Genes 16 (3) : 295-302. ScholarBank@NUS Repository. https://doi.org/10.1023/A:1008034807216
Abstract: The complete nucleotide sequence of the triple gene block one (TGB 1) of cymbidium mosaic potexvirus (CymMV) was compared to those from other potex-, carla-, furo- and hordeiviruses. Seven conserved motifs in the TGB 1, including the ATP-GTP binding domain (P-Loop) consensus GXXGKTSTS, were found in all four virus genera. We propose that all TGBV can be classified into phylogenetic clusters based on their TGB 1 homolog genes. These clusters can be further delineated to form subgroups. The first cluster comprises the potexviruses which are further subdivided into three subgroups; BaMV, FMV, PlaMV and PapMV (subgroup Ia); CymMV, PAMV, NMV, SMYEaV and WClMV (subgroup Ib) and PVX (subgroup Ic). The second cluster comprises carlaviruses with a dual subgrouping; CVB, LSV, PVM, PMV and ASPV (subgroup IIa) and LVX (subgroup IIb). The third cluster carries the most diverse of TGBV comprising furoviruses PCV, PMTV and BSBV (subgroup IIIa) and hordeiviruses PSLV, BSMV and LRSV (subgroup IIIb). The phylogenetic relationships of triple gene block viruses (TGBV) based on the TGB I homolog gene indicates a convergent evolution.
Source Title: Virus Genes
URI: http://scholarbank.nus.edu.sg/handle/10635/101388
ISSN: 09208569
DOI: 10.1023/A:1008034807216
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