Bioinformatic analysis of the nucleotide binding site-encoding disease-resistance genes in foxtail millet (Setaria italica (L.) Beauv.)
文献类型： 外文期刊
作者： Zhu, Y. B. 1 ; Xie, X. Q. 3 ; Li, Z. Y. 2 ; Bai, H. 2 ; Dong, L. 2 ; Dong, Z. P. 2 ; Dong, J. G. 1 ;
作者机构： 1.Agr Univ Hebei, Mol Plant Pathol Lab, Baoding, Peoples R China
2.Hebei Acad Agr & Forestry Sci, Millet Inst, Shijiazhuang, Peoples R China
3.Peking Univ, Sch Life Sci, Beijing 100871, Peoples R China
关键词： Foxtail millet;Gene clusters;Phylogenetic tree;Database;Nucleotide-binding site
期刊名称：GENETICS AND MOLECULAR RESEARCH （ 影响因子：0.764； 五年影响因子：0.912 ）
ISSN： 1676-5680
年卷期： 2014 年 13 卷 3 期
页码：
收录情况： SCI
摘要： The nucleotide-binding site (NBS) disease-resistance genes are the largest category of plant disease-resistance gene analogs. The complete set of disease-resistant candidate genes, which encode the NBS sequence, was filtered in the genomes of two varieties of foxtail millet (Yugu1 and 'Zhang gu'). This study investigated a number of characteristics of the putative NBS genes, such as structural diversity and phylogenetic relationships. A total of 269 and 281 NBS-coding sequences were identified in Yugu1 and 'Zhang gu', respectively. When the two databases were compared, 72 genes were found to be identical and 164 genes showed more than 90% similarity. Physical positioning and gene family analysis of the NBS disease-resistance genes in the genome revealed that the number of genes on each chromosome was similar in both varieties. The eighth chromosome contained the largest number of genes and the ninth chromosome contained the lowest number of genes. Exactly 34 gene clusters containing the 161 genes were found in the Yugu1 genome, with each cluster containing 4.7 genes on average. In comparison, the 'Zhang gu' genome possessed 28 gene clusters, which had 151 genes, with an average of 5.4 genes in each cluster. The largest gene cluster, located on the eighth chromosome, contained 12 genes in the Yugu1 database, whereas it contained 16 genes in the 'Zhang gu' database. The classification results showed that the CC-NBS-LRR gene made up the largest part of each chromosome in the two databases. Two TIR-NBS genes were also found in the Yugu1 genome.
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