Iflavirus
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Iflavirus seqs

Iflavirus
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Genus: Iflavirus
  Species Virus Abbreviation
  Antheraea pernyi iflavirus Antheraea pernyi iflavirus APV
  Brevicoryne brassicae virus Brevicoryne brassicae virus  
  Deformed wing virus deformed wing virus DWV
    Kakugo virus KV
  Dinocampus coccinellae paralysis virus Dinocampus coccinellae paralysis virus  
  Ectropis obliqua virus Ectropis obliqua virus EoV
  Infectious flacherie virus* infectious flacherie virus IFV
  Lygus lineolaris virus 1 Lygus lineolaris virus 1 LlV-1
  Lymantria dispar iflavirus 1 Lymantria dispar iflavirus 1  
  Nilaparvata lugens honeydew virus 1 Nilaparvata lugens honeydew virus 1 NlHV-1
  Perina nuda virus Perina nuda virus PnV
  Sacbrood virus sacbrood virus SBV
  Slow bee paralysis virus slow bee paralysis virus SBPV
  Spodoptera exigua iflavirus 1 Spodoptera exigua iflavirus 1  
  Spodoptera exigua iflavirus 2 Spodoptera exigua iflavirus 2  
  Varroa destructor virus-1 Varroa destructor virus 1 VDV-1
  *, type species    

It is clear from sequence comparisons (N.J. Knowles, unpublished observations) that 10 of these viruses can be divided into seven groups (species or genera?) which I have arbitrarily labelled A to G:

A) Infectious flacherie virus (IFV)

B) Sacbrood virus (SBV)

C) Perina nuda virus (PnV) and Evtropis oblique picorna-like virus (EoPV)

D) Deformed wing virus (DWV), Varroa destructor virus 1 (VDV-1) and Kakugo virus (KV)

E) Venturia canescens picorna-like virus (VcPLV)

F) Brevicoryne brassicae picorna-like virus (BBPLV)

G) (Honey) slow bee paralysis virus (BSPV)

Below is a N-J tree of the polymerase region (~500 aa). Each of the seven virus groups could represent a distinct genus.

 

Software: MEGA 3.1
No. of Taxa : 14
Data File : Iflaviridae_pol_2.meg
Data Title : Iflavirus partial pol
Data Type : Amino acid
Analysis : Phylogeny reconstruction
Tree Inference : ==============================
Method : Neighbor-Joining
Phylogeny Test and options : Bootstrap (1000 replicates; seed=64238)
Include Sites : ==============================
Gaps/Missing Data : Pairwise Deletion
Substitution Model : ==============================
Model : Amino: Poisson correction
Substitutions to Include : All
Pattern among Lineages : Same (Homogeneous)
Rates among sites : Uniform rates
No. of Sites : 544
No Of Bootstrap Reps = 1000

 

Table showing the percentage amino acid differences for the polymerase region depicted in the tree above.

 
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 IFV (AB000906) 0    
2 IFV (EF422865) 0.8 0  
3 IFV (EF422866) 0.8 0.4 0
4 SBV (AF092924) 74.5 74.5 74.5 0  
5 SBV (AF469603) 74.9 74.9 74.9 1.7 0
6 PnPV (AF323747) 78.8 78.8 78.8 73.6 73.8 0  
7 EoPV (AY341824) 79.2 78.8 78.8 72.7 72.9 6.9 0
8 DWV (AJ489744) 75.1 75.1 74.8 66.3 66.7 73.9 74.3 0      
9 DWV (AY292384) 75.2 75.2 74.9 66.5 66.9 74 74.4 0 0    
10 VDV (AY251269) 75.4 75.4 75.2 66.9 67.3 74.6 75.5 3.9 3.9 0  
11 KV (AB070959) 75.1 75.1 74.9 66.2 66.6 74.2 74.4 1.2 1.2 3.9 0
12 BBPLV (EF517277) 74.9 74.7 74.7 65.9 65.7 75.4 76.2 58.7 58.7 59.3 58.8 0
13 VcPLV (AY534885) 76.2 75.8 76 71.1 71.1 77.9 78.3 65.4 65.6 65.6 65.1 61.2 0
14 BSPV (EU035616) 74.9 74.7 74.5 70.8 71.2 74.1 74.7 60.8 60.7 61.1 60.5 65.2 70.1 0

Copyright 2006-2017 The Pirbright Institute, UK.