Development of SCAR markers for species identification of the genus Nepenthes (Nepenthaceae).

Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand.
Pakistan Journal of Biological Sciences 11/2009; 12(22):1455-61. DOI: 10.3923/pjbs.2009.1455.1461
Source: PubMed


Nepenthes species in Thailand, namely N. mirabilis Druce, N. gracilis Korth., N. smilesii Hemsl., N. ampullaria Jack and N. kampotiana Lecomte, were collected for development of Sequence Characterized Amplified Region (SCAR) marker, a genotype identification tool. Forty Random Amplified Polymorphic DNA (RAPD) primers were screened and three successful primers produced different banding patterns including five candidate species-specific markers. The candidate markers were cloned and sequenced. The marker sequences are 602, 379, 420, 473 and 1017 bp for N. mirabilis, N. gracilis, N. smilesii, N. ampullaria and N. kampotiana, respectively. Then the sequences were used to design primers for development of a species-specific band being a SCAR marker, including Mir 1, Mir 2 and Mir 3 for N. mirabilis; Gra 1 and Gra 2 for N. gracilis; Smi 1, Smi 2 and Smi 3 for N. smilesii; Amp 1 and Amp 2 for N. ampullaria and Kam 1 and Kam 2 of N. kampotiana. The primers were evaluated with each other Nepenthes species. Finally, species-specific SCAR markers were successfully developed for N. gracilis, N. ampullaria and N. kampotiana. Application of these markers is feasible for identification of Nepenthes species in Thailand.

36 Reads
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: DNA polymorphism in the cultivar species; Cucumis sativus L., C. melo L. and Benincasa hispida Cogn. of subtribe Cucumerinae (Cucurbitaceae) in the four northeastern provinces of Thailand was examined by using RAPD technique. Twenty 10-mer primers were produced 212 RAPD fragments, ranging from approximately 120 to 2531 bp. The genetic similarities were estimated from banding profiles using a NTSYS* version 2.1 as a basis for dendrogram construction via the UPGMA method. Cluster analysis divided the taxa under study into 2 clades. Moreover, a RAPD marker: Cm (OPJ11 700) was specified to C. melo, and this marker was converted into sequence characterized amplified region (SCAR) marker: Cm (SCJ11 516). A pair of sequence-specific primer of clones Cm (OPJ11 700) amplified a distinct single band of the same size as the RAPD clones. The SCAR marker was developed successfully to identify C. melo genotype.
    American Journal of Plant Sciences 01/2012; 03(08). DOI:10.4236/ajps.2012.38131


36 Reads
Available from