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Molecular Cloning and Characterization of a Serine/Threonine Protein Kinase Gene from Triticum aestivum


To isolate genes related to resistance to Erysiphe graminis DC. ex Merat f.sp. tritici Em. Marchal in wheat (Triticum aestivum L.), differential display analysis was conducted for mRNA extracted from the seedlings of the wheat Haynaldia villosa 6VS/6A L translocation line 92R137 that contains the powdery mildew resistance gene Pm21. A full length cDNA named TaPK1 was isolated. BLAST analysis revealed that it was significantly homologous to Glycine max (L.) Merr. protein kinase (GmPK6) cDNA. TaPK1 encodes a 416 amino acid long polypeptide, which belongs to serine/threonine protein kinase family, also has tyrosine kinase specificity. TaPK1 is a novel protein kinase from wheat. 

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