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Table 3 Results of distances and codon-based Z tests for purifying selection between and within JAZ group in maize

From: Identification and evolution analysis of the JAZ gene family in maize

  between within dS-dN Stat from test of p-value
JAZ1 JAZ2 JAZ3 JAZ4 JAZ5 dN/dS dS > dN (purifying selection)
JAZ1   0.705 0.536 0.499 0.574 0.076/0.242 3.640* 0.000
JAZ2 0.425   0.639 0.652 0.667 0.048/0.181 2.953* 0.002
JAZ3 0.358 0.464   0.600 0.581 0.140/0.373 4.451* 0.000
JAZ4 0.406 0.415 0.338   0.564 0.165/0.188 0.479 0.316
JAZ5 0.499 0.431 0.411 0.443   0.127/0.434 5.027* 0.000
Overall 0.361/0.525 4.096* 0.000
  1. *dN/dS values were shown for maize JAZ clades. dN and dS values were shown separately at lower and upper corner, respectively for between data. To be considered under purify selection, a dN/dS ratio less than 1 (dS>dN) and a p-value for the Z-test below 0.05 were required (*, P < 0.05). According to these criteria, almost all JAZ genes were determined to be under purify selection, except for JAZ group 4 which was under neutral selection. 16 ZmJAZ sequences in total were included in this analysis