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Table 2 Estimated Ka/Ks ratios of the duplicated BrAQP genes with their divergence time in B. rapa

From: Genome-wide expression profiling of aquaporin genes confer responses to abiotic and biotic stresses in Brassica rapa

Duplicated gene pairs Ks Ka Ka/Ks Duplication type Purify selection Time (mya)
BrSIP1;1b (MF1) vs. BrSIP1;1a (LF) 0.191 0.034 0.18 Segmental Yes 0.64
BrSIP2;1b (MF2) vs. BrSIP2;1a (MF1) 0.241 0.059 0.24 Segmental Yes 0.80
BrSIP2;1b (MF2) vs. BrSIP2;1c (LF) 0.307 0.084 0.27 Segmental Yes 1.02
BrNIP1;2b (MF1) vs. BrNIP1;2a (LF) 0.314 0.006 0.02 Segmental Yes 1.05
BrNIP3;1a (MF1) vs. BrNIP3;1b (MF2) 0.421 0.051 0.12 Segmental Yes 1.40
BrNIP4;1 (MF2) vs. BrNIP4;2b (MF2) 0.376 0.068 0.18 Tandem Yes 1.25
BrNIP4;2b (MF2) vs. BrNIP4;2c (MF2) 0.338 0.077 0.23 Tandem Yes 1.13
BrNIP5;1b (MF1) vs. BrNIP5;1a (MF2) 0.282 0.006 0.02 Segmental Yes 0.94
BrNIP6;1b (LF) vs. BrNIP6;1a (MF1) 0.283 0.034 0.12 Segmental Yes 0.94
BrPIP1;1a (LF) vs. BrPIP1;1b (MF1) 0.229 0.012 0.05 Segmental Yes 0.76
BrPIP1;1a (LF) vs. BrPIP1;2b (LF) 0.727 0.018 0.02 Segmental Yes 2.42
BrPIP1;1a (LF) vs. BrPIP1;3b (LF) 0.925 0.091 0.10 Segmental Yes 3.08
BrPIP1;1b (MF1) vs. BrPIP1;3b (LF) 0.867 0.085 0.10 Segmental Yes 2.89
BrPIP1;1b (MF1) vs. BrPIP1;2b (LF) 0.768 0.012 0.02 Segmental Yes 2.56
BrPIP1;2b (LF) vs. BrPIP1;2a (MF1) 0.224 0.027 0.12 Segmental Yes 0.75
BrPIP1;2b (LF) vs. BrPIP1;3a (MF2) 1.013 0.054 0.05 Segmental Yes 3.38
BrPIP1;2b (LF) vs. BrPIP1;3b (LF) 0.948 0.066 0.07 Segmental Yes 3.16
BrPIP1;3a (MF2) vs. BrPIP1;4 (MF1) 0.672 0.041 0.06 Segmental Yes 2.24
BrPIP1;3b (LF) vs. BrPIP1;3a (MF2) 0.114 0.017 0.15 Segmental Yes 0.38
BrPIP1;3b (LF) vs. BrPIP1;4 (MF1) 0.705 0.047 0.07 Segmental Yes 2.35
BrPIP2;1 (LF) vs. BrPIP2;2b (LF) 0.693 0.152 0.22 Segmental Yes 2.31
BrPIP2;1 (LF) vs. BrPIP2;2a (MF2) 0.786 0.160 0.20 Segmental Yes 2.62
BrPIP2;2b (LF) vs. BrPIP2;2a (MF2) 0.377 0.026 0.07 Segmental Yes 1.26
BrPIP2;3a (MF2) vs. BrPIP2;3b (LF) 0.410 0.023 0.06 Segmental Yes 1.37
BrPIP2;3a (MF2) vs. BrPIP2;5a (LF) 1.160 0.195 0.17 Segmental Yes 3.87
BrPIP2;3a (MF2) vs. BrPIP2;4c (LF) 2.817 0.117 0.04 Segmental Yes 9.39
BrPIP2;3b (LF) vs. BrPIP2;2a (MF2) 0.351 0.006 0.02 Segmental Yes 1.17
BrPIP2;3b (LF) vs. BrPIP2;1 (LF) 0.734 0.026 0.04 Segmental Yes 2.45
BrPIP2;3b (LF) vs. BrPIP2;4c (LF) 1.325 0.091 0.07 Segmental Yes 4.42
BrPIP2;4a (MF2) vs. BrPIP2;4b (MF1) 0.106 0.020 0.19 Segmental Yes 0.35
BrPIP2;4a (MF2) vs. BrPIP2;4c (LF) 0.172 0.012 0.07 Segmental Yes 0.57
BrPIP2;4b (MF1) vs. BrPIP2;4c (LF) 0.142 0.020 0.14 Segmental Yes 0.47
BrPIP2;5a (LF) vs. BrPIP2;5b (MF2) 0.374 0.028 0.07 Segmental Yes 1.25
BrPIP2;7a (MF2) vs. BrPIP2;7c (MF1) 0.176 0.035 0.20 Segmental Yes 0.59
BrPIP2;7a (MF2) vs. BrPIP2;7b (LF) 0.415 0.032 0.08 Segmental Yes 1.38
BrPIP2;7b (LF) vs. BrPIP2;7c (MF1) 0.304 0.011 0.04 Segmental Yes 1.01
BrTIP1;1 (MF1) vs. BrTIP1;2b (MF1) 0.590 0.093 0.16 Segmental Yes 1.97
BrTIP1;1 (MF1) vs. BrTIP1;2a (LF) 0.590 0.061 0.10 Segmental Yes 1.97
BrTIP1;2a (LF) vs. BrTIP1;2b (MF1) 0.964 0.167 0.17 Segmental Yes 3.21
BrTIP2;1a (LF) vs. BrTIP2;1b (MF2) 0.133 0.035 0.26 Segmental Yes 0.44
BrTIP2;1a (LF) vs. BrTIP2;1c (MF1) 0.170 0.029 0.17 Segmental Yes 0.57
BrTIP2;1b (MF2) vs. BrTIP2;1c (MF1) 0.134 0.017 0.13 Segmental Yes 0.45
BrTIP2;3a (LF) vs. BrTIP2;3b (MF1) 0.514 0.041 0.08 Segmental Yes 1.71
BrTIP3;1a (MF1) vs. BrTIP3;1b (LF) 0.337 0.051 0.15 Segmental Yes 1.12
BrTIP3;2a (LF) vs. BrTIP3;2b (MF1) 0.354 0.017 0.05 Segmental Yes 1.18
  1. LF less fractioned subgenome, MF more fractioned subgenome (MF1 and MF2), Ks the number of synonymous substitutions per synonymous site, Ka the number of nonsynonymous substitutions per nonsynonymous site, MYA million years ago