国家自然科学基金项目(No. 30760147);海南省自然科学基金项目(No. 311092);中央公益性科研基本业务费项目(No.ITBB120504)共同资助
根据已知物种NBS抗病类基因(RGAs)保守序列设计引物,从芒果品种“金煌”基因组DNA中分离得到了10条同源序列(pp-1~10,GenBnak登录号为HM446507~16)。DNA序列分析表明,这些RGAs在200~300bp区间存在较大变异,Pi值都在0.4以上。同源性分析表明这些序列的同源性差异范围从11.0%~98.4%,离散值范围为1.6~100.7, 10条RGAs可以分为两大类。蛋白序列分析表明,pp-1~10都具有开放读码框,编码的蛋白含有典型的NBS抗病类基因所拥有的P-loop和Kinase-2a结构域,通过同源进化分析可将其分为TIR-NBS-LRR和CC-NBS-LRR两类,与已知物种同源性分别为22%~60%。
According to the conservative sequences of the NBS-LRR disease-resistant genes (RGAs) , we isolated 10 homologous sequences (pp-01~10) from the mango variety ‘Jin Huang’ genomic DNA. Analysis of DNA sequences showed that the RGAs showed more variation in the 200~300-bp region, and Pi value was above 0.4. The clones of pp-01 to 10 showed great homologous differences, with the similarity from 11.0%~98.4% and divergence value from 1.6 to 1000.7 and 10 RGAs can be divided into two groups. pp-01~10 have an open reading frame, and the encoded protein contains the domain of the P-loop and Kinase-2a that were typical character of NBS gene families. pp-01~10 can be divided into two families, TIR-NBS-LRR and CC-NBS-LRR, by analysis of phylogenetic tree, and the homology was 22~60% compared with NBS genes of other known species.
刘洋.芒果NBS类抗病基因同源序列克隆与分析[J].植物遗传资源学报,2013,14(3):571-576.
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