TABLE 1 

Comparison of genome features of various insect bacterial endosymbionts

Species
described
Chromosome
size (bp)
No. of
plasmids
[size (bp)]
Protein
coding (%)
G+C
content (%)
No. of
predicted
CDSs
No. of
rRNA
operons
tRNANo. of
pseudogenes
Average ORF
length (bp)
Wigglesworthia spp.
W. morsitans719,5351 (5,198)83.92562023411979
W. brevipalpisa697,7421 (5,280)8922.56182348988
Sodalis glossinidiusb 4,171,1463 (121,356)50.954.72,432769972873
Blochmannia floridanusc 705,557083.227.458313761,007
Buchnera strains
 BApe640,6811 (≥15,044)8826.358313212988
 BSgf641,4542 (~22,267)g84.526.254513833978
  • a  As reported by Akman et al. (16) and with our own revision.

  • b  As reported by Toh et al. (7).

  • c  As reported by Gil et al. (21).

  • d  Buchnera aphidicola strains BAp and BSg were selected because of similar 16S rRNA genetic distances between isolates relative to W. morsitans and W. brevipalpis.

  • e  B. aphidicola strain isolated from Acyrthosiphon pisum as reported by Shigenobu et al. (19).

  • f  B. aphidicola strain isolated from Schizaphis graminum as reported by Tamas et al. (20).

  • g  Tryptophan plasmid size as reported by Lai et al. (62).