Molecular analysis of phosphomannomutase (PMM) genes reveals a unique PMM duplication event in diverse Triticeae species and the main PMM isozymes in bread wheat tissues

Table 2 Relative synonymous substitutions of PMM genes from rice, B. distachyon, bread wheat, and barley ^a

*PMM*genes compared	Number of substitutions per synonymous site (dS)	Averaged dS
OsPMM/BdPMM	0.4231 ± 0.0646
OsPMM/HvPMM-1	0.4807 ± 0.0723
OsPMM/TaPMM-A1	0.4324 ± 0.0656	0.4385 ± 0.0669 (OsPMM/TaPMM1 genes)
OsPMM/TaPMM-B1	0.4573 ± 0.0701
OsPMM/TaPMM-D1	0.4259 ± 0.0651
OsPMM/TaPMM-B2	0.5150 ± 0.0791	0.4997 ± 0.0763 (OsPMM/TaPMM2 genes)
OsPMM/TaPMM-D2	0.4844 ± 0.0735
BdPMM/HvPMM-1	0.3449 ± 0.0542
BdPMM/TaPMM-A1	0.2884 ± 0.0471	0.2974 ± 0.0486 (BdPMM/TaPMM1 genes)
BdPMM/TaPMM-B1	0.3121 ± 0.0508
BdPMM/TaPMM-D1	0.2918 ± 0.0479
BdPMM/TaPMM-B2	0.3647 ± 0.0583	0.3503 ± 0.0562 (BdPMM/TaPMM2 genes)
BdPMM/TaPMM-D2	0.3358 ± 0.0541
HvPMM-1/TaPMM-A1	0.0921 ± 0.0229	0.0971 ± 0.0237 (HvPMM-1/TaPMM1 genes)
HvPMM-1/TaPMM-B1	0.1126 ± 0.0261
HvPMM-1/TaPMM-D1	0.0867 ± 0.0222
HvPMM-1/TaPMM-B2	0.1857 ± 0.0355	0.1826 ± 0.0351 (HvPMM-1/TaPMM2 genes)
HvPMM-1/TaPMM-D2	0.1795 ± 0.0346
TaPMM-B1/TaPMM-B2	0.1567 ± 0.0323	0.1398 ± 0.0299 (TaPMM1/TaPMM2 genes)

^a The dS values and their standard deviations were calculated using PMM cDNA coding sequences. TaPMM-A2 was not included in the calculation owing to the occurrence of mutation in its coding region.

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