Table 3

Relative rate tests for comparing the molecular evolutionary rates of 16S rRNA, groEL and gyrB gene sequences between the lineages of the endosymbiont of Nysius plebeius, its free-living relatives and Buchnera aphidicola, the obligate endosymbionts of aphids

GeneLineage 1Lineage 2OutgroupK1aK2bK1–K2Rate ratiocP-valued
16S rRNAEndosymbiont of N. plebeius (AB576918)Escherichia coli (U00096) and Pantoea agglomerans (AY691545)Vibrio cholerae (CP001485)0.0680.0280.0402.43.6 × 10−5
groELEndosymbiont of N. plebeius (AB583951)E. coli (U00096) and P. agglomerans (AB008142)V. cholerae (CP001485)0.0940.0300.0643.11.9 × 10−7
gyrBEndosymbiont of N. plebeius (AB583935)E. coli (U00096) and P. ananatis (NC_013956)V. cholerae (CP001485)0.2120.0600.1523.51.3 × 10−7
16S rRNAEndosymbiont of N. plebeius (AB576918)Buchnera aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.0530.066−0.0130.800.28
groELEndosymbiont of N. plebeius (AB583951)B. aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.0730.0690.0041.10.79
gyrBEndosymbiont of N. plebeius (AB583935)B. aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.1330.167−0.0340.800.21
GeneLineage 1Lineage 2OutgroupK1aK2bK1–K2Rate ratiocP-valued
16S rRNAEndosymbiont of N. plebeius (AB576918)Escherichia coli (U00096) and Pantoea agglomerans (AY691545)Vibrio cholerae (CP001485)0.0680.0280.0402.43.6 × 10−5
groELEndosymbiont of N. plebeius (AB583951)E. coli (U00096) and P. agglomerans (AB008142)V. cholerae (CP001485)0.0940.0300.0643.11.9 × 10−7
gyrBEndosymbiont of N. plebeius (AB583935)E. coli (U00096) and P. ananatis (NC_013956)V. cholerae (CP001485)0.2120.0600.1523.51.3 × 10−7
16S rRNAEndosymbiont of N. plebeius (AB576918)Buchnera aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.0530.066−0.0130.800.28
groELEndosymbiont of N. plebeius (AB583951)B. aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.0730.0690.0041.10.79
gyrBEndosymbiont of N. plebeius (AB583935)B. aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.1330.167−0.0340.800.21
a

Estimated mean distance between lineage 1 and the last common ancestor of lineages 1 and 2.

b

Estimated mean distance between lineage 2 and the last common ancestor of lineages 1 and 2.

c

K1/K2.

d

P-values are estimated by the program RRTree (Robinson-Rechavi and Huchon, 2000). The numbers of nucleotide sites used are 1224, 1010 and 640 for 16S rRNA, groEL and gyrB genes, respectively.

Table 3

Relative rate tests for comparing the molecular evolutionary rates of 16S rRNA, groEL and gyrB gene sequences between the lineages of the endosymbiont of Nysius plebeius, its free-living relatives and Buchnera aphidicola, the obligate endosymbionts of aphids

GeneLineage 1Lineage 2OutgroupK1aK2bK1–K2Rate ratiocP-valued
16S rRNAEndosymbiont of N. plebeius (AB576918)Escherichia coli (U00096) and Pantoea agglomerans (AY691545)Vibrio cholerae (CP001485)0.0680.0280.0402.43.6 × 10−5
groELEndosymbiont of N. plebeius (AB583951)E. coli (U00096) and P. agglomerans (AB008142)V. cholerae (CP001485)0.0940.0300.0643.11.9 × 10−7
gyrBEndosymbiont of N. plebeius (AB583935)E. coli (U00096) and P. ananatis (NC_013956)V. cholerae (CP001485)0.2120.0600.1523.51.3 × 10−7
16S rRNAEndosymbiont of N. plebeius (AB576918)Buchnera aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.0530.066−0.0130.800.28
groELEndosymbiont of N. plebeius (AB583951)B. aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.0730.0690.0041.10.79
gyrBEndosymbiont of N. plebeius (AB583935)B. aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.1330.167−0.0340.800.21
GeneLineage 1Lineage 2OutgroupK1aK2bK1–K2Rate ratiocP-valued
16S rRNAEndosymbiont of N. plebeius (AB576918)Escherichia coli (U00096) and Pantoea agglomerans (AY691545)Vibrio cholerae (CP001485)0.0680.0280.0402.43.6 × 10−5
groELEndosymbiont of N. plebeius (AB583951)E. coli (U00096) and P. agglomerans (AB008142)V. cholerae (CP001485)0.0940.0300.0643.11.9 × 10−7
gyrBEndosymbiont of N. plebeius (AB583935)E. coli (U00096) and P. ananatis (NC_013956)V. cholerae (CP001485)0.2120.0600.1523.51.3 × 10−7
16S rRNAEndosymbiont of N. plebeius (AB576918)Buchnera aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.0530.066−0.0130.800.28
groELEndosymbiont of N. plebeius (AB583951)B. aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.0730.0690.0041.10.79
gyrBEndosymbiont of N. plebeius (AB583935)B. aphidicola str. APS (NC_002528) and B. aphidicola str. Sg (NC_004061)V. cholerae (CP001485)0.1330.167−0.0340.800.21
a

Estimated mean distance between lineage 1 and the last common ancestor of lineages 1 and 2.

b

Estimated mean distance between lineage 2 and the last common ancestor of lineages 1 and 2.

c

K1/K2.

d

P-values are estimated by the program RRTree (Robinson-Rechavi and Huchon, 2000). The numbers of nucleotide sites used are 1224, 1010 and 640 for 16S rRNA, groEL and gyrB genes, respectively.

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