Genetic Diversity and Phylogenetic Analysis of Citrus tristeza virus Isolates from Turkey

Table 4

Estimates of the average evolutionary divergence over sequence pairs of the CP genes of CTV isolates from different citrus growing regions of the world belonging to previously established strain groups.

Mean Evolutionary Distance
Within Groups			Between Groups
Groups	d	SE		Group 2	Group 6	Group 4	Group 1	Group 3	Group 5
Group 2	0.026	0.003	Group 2		0.010	0.010	0.008	0.009	0.011
Group 6	0.019	0.003	Group 6	0.083		0.010	0.009	0.010	0.011
Group 4	0.015	0.003	Group 4	0.086	0.080		0.010	0.009	0.011
Group 1	0.021	0.003	Group 1	0.058	0.078	0.088		0.010	0.011
Group 3	0.030	0.004	Group 3	0.077	0.081	0.074	0.077		0.011
Group 5	0.011	0.002	Group 5	0.084	0.093	0.090	0.087	0.090
Overall	0.089	0.006
Mean Evolutionary Diversity
				d	SE
Within groups				0.020	0.001
Interpopulational				0.049	0.005
Entire Population				0.070	0.006
Coefficient of Evolutionary Differentiation				0.7066	0.0183

Estimates of standard error (SE) obtained by a bootstrap procedure (1000 replicates) are shown in bold in corresponding column. Analyses were conducted using the Kimura 2-parameter model [34]. The analysis involved 76 nucleotide sequences with a total of 672 positions in the final dataset. Evolutionary analyses were conducted in MEGA6 [35] after removing all ambiguous positions for each sequence pair.