Comparison of deduced amino acid sequence of PpARF2 and several α-l-arafases, β-xylosidases, and β-glucosidase. Using the ClustalW program, amino acid sequences were aligned and an unrooted phylogenetic tree was generated. Their GenBank accession numbers are ASD1 and ASD2 from Arabidopsis (AY243509 and AY243510), PPARF1 from Japanese pear (AB073311), LeARF from tomato (AB073310), AXAH-I and AXAH-II from barley (AF320324 and AF320325), β-glucosidase from C. rubrum (AY320257), β-xylosidase from peach (partial, AF362990), XYL1 from Fragaria × ananassa (partial, AY486104), ARA-1 and XYL from barley (AY029259 and AY029260), and LeXYL1 and LeXYL2 from tomato (AB041811 and AB041812). At1g02640, At5g49360 (AtBXL1), At5g10560, At1g78060, At3g19620, At5g64570 (AtBXL4), and At5g09730 were β-xylosidases from Arabidopsis.