The mitochondrial DNA markers for distinguishing Phalaenopsis species and revealing maternal phylogeny

B. Y. Lin, C. D. Chang, L. L.H. Huang, Y. C. Liu, Y. Y. Su, T. C. Chen, R. H. Lee, H. J. Huang, W. L. Wu, C. C. Chang

研究成果: Article同行評審

9 引文 斯高帕斯(Scopus)

摘要

Moth orchids (Phalaenopsis) are among the top-traded blooming potted plants in the world. To explore mitochondrial DNA (mtDNA) markers for species identification, we located simple sequence repeats in the mtDNA of Phalaenopsis aphrodite subsp. formosana and then pre-screened them for polymorphic markers by their comparison with corresponding mtDNA regions of P. equestris. The combination of 13 selected markers located in intergenic spacers could unambiguously distinguish 15 endemic moth orchids. Five most variable markers with polymorphic information content (PIC) ≥ 0.7 could be combined to classify 18 of 19 endemic moth orchids including parental strains most commonly used in breeding programs. The sequences of four selected mtDNA regions were highly variable, and one region (MT2) could be used to completely distinguish 19 endemic moth orchids. Though mitochondrial introns were highly conserved among moth orchids, evolutionary hotspots, such as variable simple sequence repeats and minisatellite repeats, were identified as useful markers. Furthermore, a marker technology was applied to reveal the maternal inheritance mode of mtDNA in the moth orchids. Moreover, phylogenetic analysis indicates that the mtDNA was nonmonophyletic below the Phalaenopsis genus. In summary, we have revealed a set of mtDNA markers that could be used for identification and phylogenetic study of Phalaenopsis orchids.

原文English
頁(從 - 到)68-78
頁數11
期刊Biologia Plantarum
60
發行號1
DOIs
出版狀態Published - 2016 1月 1

All Science Journal Classification (ASJC) codes

  • 植物科學
  • 園藝科學

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