Table 8.
Selection pressure analysis on the Bemisia tabaci SSA1-SG1 α-glucosidase (GH13) genes
| Gene | Likelihood ratio test (LRT) | Number of sites under pervasive selection at P ≤ 0.01 | Presence of episodic diversifying selection | |
|---|---|---|---|---|
| Diversifying selection ( +) | Purifying selection (-) | |||
| ENSSSA1NGT018454 | 132.57 | 8 | 2 | + |
| ENSSSA1UGT001243 | 16.08 | 4 | 0 | + |
| ENSSSA1UGT028152 | 11.54 | 1 | 0 | + |
| ENSSSA1UGT020483 | 2.39 | 1 | 0 | - |
| ENSSSA1NGT009143 | 1.88 | 2 | 0 | - |
| ENSSSA1NGT010254 | 1.06 | 1 | 0 | - |
| ENSSSA1UGT025021 | 0.93 | 3 | 0 | - |
| ENSSSA1UGT025365 | 0.00 | 0 | 0 | - |
| ENSSSA1NGT011100 | 0.00 | 2 | 0 | - |
Analysis of selection pressure acting on the α-glucosidase (GH13) gene of B. tabaci SSA1-SG1-Ug and B. tabaci SSA1-SG1-Ng in “cluster 2”. The adaptive Branch-site Random Effects Likelihood (aBSREL) software analyzed diversifying selection using a branch-site effects model [116], while Fixed Effect Likelihood (FEL) software analyzed the number of sites within a gene with pervasive selection [117]. Three genes showed episodic diversifying selection indicating adaptive evolution