Sequence alignment, tertiary structure model and phylogenetic analysis of SpCBF1. a Amino acid sequences alignment. Sequences used for alignment are derived from Solanum tuberosum (StCBF1, ACB45096.1), Solanum commersonii (ScCBF1, ACJ26751.1), Solanum habrochaites (ShCBF1, ACB45087.1), Solanum lycopersicum (SlCBF1, AAS77820.1) Lycopersicon hirsutum (LhCBF1, BAE17131.1), Capsicum annuum (CaCBF1, AAR88363.1), Populus trichocarpa (PtCBF1, ABO48363.1), Arabidopsis thaliana (AtCBF3, ABV27138.1), Arabidopsis thaliana (AtCBF1, AAV80413.1), Arabidopsis thaliana (AtCBF2, AAV80415.1). Boxes indicate conserved regions of CBFs. b Tertiary structure model of SpCBF1. c Phylogenetic analysis. Sequences were aligned by CLUSTALX and analyzed using the MEGA 4.1. Construction was carried out by the parsimony method with 1000 bootstrap replicates and a consensus tree was generated. Database accession numbers are as follows: Solanum pinnatisectum (SpCBF1), Solanum tuberosum (StCBF1, ACB45096.1), Solanum lycopersicum (SlCBF1, AAS77820.1; SlCBF2, AAS77821.1), Solanum commersonii (ScCBF1, ACB45093.1; ScCBF2, ACB45094.1; ScCBF3, ACB45092.1), Solanum habrochaites (ShCBF1, ACB45087.1; ShCBF2, ACB45088.1; ShCBF3, ACB45078.1), Capsicum annuum (CaCBF1, AAR88363.1), Populus trichocarpa (PtCBF1, ABO48363.1), Manihot esculenta (MeCBF1, AFB83707.1), Morus alba var. multicaulis (MamCBF1, AFQ59977.1), Arabidopsis thaliana (AtCBF1, AAV80413.1; AtCBF2, AAV80415.1; AtCBF3, ABV27149.1), Nicotiana tabacum (NtCBF2, ACE73694.1; NtCBF3, ACE73695.1), Betula pendula (BpeCBF1, ADZ23479.1), Betula platyphylla (BplCBF1, ADZ23479.1), Malus domestica (MdCBF1, AAZ20446.1), Camellia sinensis (CsCBF1, AFN93974.1), Gossypium hirsutum (GhCBF1, ABD65473.1), Bruguiera gymnorhiza (BgCBF1, AFU81298.1), Oryza sativa Japonica Grou (OsCBF, NP_001056909.1), Lolium perenne (LpCBF, BAF36838.1), Avena sativa (AsCBF, CAJ21276.1), Aegilops biuncialis (AbCBF2, CBX87016.1)