Abstract：
:A full-length cDNA encoding wheat peroxisomal ascorbate peroxidase (pAPX) was cloned by Suppression Subtractive Hybridization (SSH) and in silico approach. The cDNA was 1027 bp in length and contained a complete ORF of 876 bp, which encodes a protein of 292 amino acid residues. Its deduced amino acids sequence had 84% identity with that of pAPX from barley. The gene was designated as Ta-pAPX. The Ta-pAPX homologous genes were mapped on wheat chromosome 7A and 7D using Chinese Spring nulli-tetrasomic lines analysis. Northern analysis indicated that, after inoculation by Erysiphe graminis Dc.f.sp. tritici, the expression of Ta-pAPX gene in Yangmai5 was enhanced, but its expression in wheat-Haynaldia villosa 6VS/6AL translocation lines changed a little. The results implied that Ta-pAPX may be related to susceptibility of wheat to powdery mildew. The complete coding sequence of Ta-pAPX was cloned into an expression vector pET32 (a+) and a protein with the same deduced molecular weight (MW) was expressed in E. coli BL21 (DE3), which showed ascorbate peroxidase activity.
journal_name
Mol Biol Repjournal_title
Molecular biology reportsauthors
Chen Y,Wang H,Wang X,Cao A,Chen Pdoi
10.1007/s11033-005-4536-1subject
Has Abstractpub_date
2006-09-01 00:00:00pages
207-13issue
3eissn
0301-4851issn
1573-4978journal_volume
33pub_type
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