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Isolation, characterization and expression analysis of BrMyb from Erwinia carotovora subsp Carotovora diseased Chinese cabbage

文献类型： 外文期刊

作者： Zhang, Song-He 1 ; Yang, Qing 2 ; Ma, Rong-Cai 2 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Agro Biotechnol Res Ctr, Beijing 100089, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Beijing Agro Biotechnol Res Ctr, Beijing 100089, Peoples R China; Nanjing Agr Univ, Coll Life Sci, Nanjing 210095, Peoples R China

关键词： transcription factor;Erwinia carotovora subsp carotovora;Brassica rapa subsp pekinensis;methyl jasmonic acid;salicylic acid

期刊名称：AFRICAN JOURNAL OF BIOTECHNOLOGY （ 影响因子：0.573； 五年影响因子：0.794 ）

ISSN： 1684-5315

年卷期： 2007 年 6 卷 5 期

页码：

收录情况： SCI

摘要： Plant MYB Transcription factors play important roles in defense responses. We described here a novel gene BrMyb encoding MYB transcription factor homologue was isolated from Erwinia carotovora subsp. Carotovora (Ecc) pathogens diseased Chinese cabbage ( Brassica rapa subsp. pekinensis) and named as BrMyb. The nucleotide sequence of the cloned BrMyb revealed a single open reading frame of 1047 bp coding for 348 amino acids with a theoretical protein size of 48 kDa. The deduced amino acid sequence showed significant homology with Brassica oleracea brassica MYB protein and Arabidopsis thaliana minor MYB protein by 89.2 and 81.2% amino acid sequence identity, respectively. The protein showed significant alignments with a SANT/Myb DNA binding domain in members of MYB family proteins from dicotyledon and monocotyledon. The expression of BrMyb could be detected in developmental leafstalks and enhanced by Ecc infection, injury, methyl jasmonic acid and salicylic acid treatments, respectively. These results suggested that BrMyb might be an old plant gene, and plays roles not only in plant development but also in the response to pathogen infection and other stresses.

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