Genome-Wide Identification and Expression Analyses of the PP2C Gene Family in Paulownia fortunei

We explored the composition and roles of protein phosphatase 2C (PP2C) family in Paulownia fortunei. The genome P. fortunei harbored 91 PfPP2C genes, encoding proteins with 120–1107 amino acids (molecular weight range, 13.51–124.81 kDa). PfPP2Cs were distributed 12 subfamilies, 1–15 per subfamily. number types conserved structure domains differed among PP2Cs, but distribution motifs within each subfamily was similar, main motif being 3, 16, 13, 10, 2, 6, 12, 4, 14, 1, 18, 8. genes had 2 to 20 exons. There ABA-response elements promoters 42 response phytohormones, stress other genes. A covariance analysis revealed that gene fragment duplication has played an important role evolution family. significant differences transcript levels some affected by witches’ broom (PaWB) after treatment rifampicin methyl methanesulfonate. PfPP2C02, PfPP2C12, PfPP2C19, PfPP2C80 strongly related PaWB. These findings provide a foundation for further studies on PP2Cs