Fig. 4 Phylogenetic analysis of C. procera Expansin A along with some other plant Expansin A genes. Deduced amino acid sequences of full-length EXPA genes were used to construct the tree. EXPANSIN A gene source followed by Swiss ProTrEMBL accession numbers are as follows. Calotropis procera: CpEXPA1:A4GV01, CpEXPA2:A4ZUE5, CpEXPA3:A4GV02, CpEXPA4:A4GV03; Arabidopsis thaliana: AtEXPA1:Q9C554, AtEXPA10:Q9LDR9, AtEXPA15:O80622, AtEXPA5:Q38864, AtEXPA8:O22874, AtEXPA6:Q38865, AtEXPA4:O48818, AtEXPA12:Q9LDJ3, AtEXPA17:Q9ZSI1, AtEXPA11:Q9LNU3, AtEXPA20:Q9SZM1, AtEXPA13:Q9M9P0, AtEXPA7:Q9LN94, AtEXPA22:Q9FL80. Gossypium hirsutum: GhEXPA1:Q8LKK3, GhEXPA2:Q8LKK2, GhEXPA3:Q8LKK1, GhEXPA4:Q8LKK0, GhEXPA5:Q8LKJ9, GhEXPA6:Q8LKJ8. Cucumis sativus: CsEXPA1:Q39625, CsEXPA2:Q39626, CsEXPA3:Q8W5B0, CsEXPA4:Q8W5A9, Oryza sativa: OsEXPA1:Q7XWU8, OsEXPA2:Q40636, OsEXPA3:Q40637, OsEXPA4:A2Y5R6, OsEXPA5:Q6ZGU9, OsEXPA6:Q9M4X7, OsEXPA7:Q852A1, OsEXPA9:Q4PR53, OsEXPA10:Q7XUD0, OsEXPA11:Q4PNY1, OsEXPA12:Q7G6Z2, OsEXPA14:Q4PR51, OsEXPA15:Q4PR50, OsEXPA16:Q69XV9, OsEXPA18:Q4PR48, OsEXPA21:Q10KN4, OsEXPA32:Q6YYWS, OsEXPA33:POC1Y4. Lycopersicon esculentum: LeEXPA1:O04359, LeEXPA2:O82625, LeEXPA4:Q9ZP32, LeEXPA8:Q9FVH0, LeEXPA18:O81999. Populus tremula x Populus tremuloides: PttEXPA1:Q6T5H7. Brassica napus: BnEXPA1:049808. Glycin max: GmEXPA1:Q8GZD3, GmEXPA2:Q8GZD2. Festuca pratensis: FpEXPA1:Q9FY31.