文献类型： 外文期刊

作者： Jin, G. ² ; Tang, X. M. ³ ; Niu, Y. ⁴ ; Huang, X. Y. ² ; Chen, T. ² ; Huang, Q. ² ; Zhang, J. ² ; Zhou, R. Y. ¹ ;

作者机构： 1.Guangxi Univ, Coll Agr, Nanning 530004, Guangxi, Peoples R China

2.Guangxi Subtrop Crops Res Inst, Nanning 530001, Guangxi, Peoples R China

3.Guangxi Acad Agr Sci, Cash Crops Res Inst, Nanning 530007, Guangxi, Peoples R China

4.Guangxi Acad Specialty Crops, Guilin 541004, Guangxi, Peoples R China

关键词： NADH dehydrogenase subunit;RNA edit;Cloning;Degenerate primer;Untranslated region

期刊名称：PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：1.039； 五年影响因子：0.77 ）

ISSN： 1851-5657

年卷期： 2017 年 86 卷

页码：

收录情况： SCI

摘要： In plants, the mitochondrial NADH dehydrogenase (complex I) is a large protein complex transferring electrons to ubiquinone. For the nine chondriogenes encoding complex I subunits (nad1, nad2, nad3, nad4, nad4L, nad5, nad6, nad7, and nad9), an efficient strategy for the cloning of complete coding sequences (CDSs) is important. Specific orthologous portions of untranslated regions (UTRs) were found based on multiple sequence alignments of chondriogene orthologues encoding complex I subunits in plant species. Based on the conservation of partial UTRs, a one-step PCR strategy was conceived for the cloning of CDSs of the nine chondriogene orthologues. Using this strategy, the five complete mitochondrial open reading frames (ORFs), which encode mitochondrial NADH dehydrogenase subunits, nad1, nad2, nad6, nad7 and nad9 respectively, were cloned in three angiosperm species: kenaf (Hibiscus cannabinus), camphor tree (Cinnamomum camphora), and ramie (Boehmeria nivea). The fifteen cloned PCR products also included 5' and 3'-UTR partial sequences. Moreover, a potential C-U RNA editing site was identified in the start codon of kenaf nad9. In conclusion, the simple and efficient strategy avoids the use of time-consuming rapid amplification of cDNA ends (RACE) process, and facilitates the cloning mitochondrial complete ORFs whose 5' and 3' flanking UTR contain an orthologous region with some degeneracy in higher plant species.