63-1 烏來杜鵑5.8S rRNA基因與內轉錄間隔區之選殖及分析
研究彙報第六十三期 , Page 1-11,出版時間: 1999- 6, 詳細內容
本研究設計一組核酸引子 (primer),利用聚合酵素連鎖反應 (polymerase chain reaction, PCR),將烏來杜鵑 (Rhododendron kanehirai Wilson)的 5.8S核糖體核酸 (rRNA)基因與內轉錄間隔區 (internal transcribed spacer, ITS)有效複製,經定序後,複製產物長為 756 bp。此 DNA片段含 43 bp屬於 18S rRNA基因的 3’端,與 70 bp屬於 26S rRNA基因的 5’端。因此,內轉錄間隔區 (ITS)實長為 643 bp,此區包含 ITS1、 5.8S rRNA基因與 ITS2等三區,其長度分別為 253、 164及 226 bp, G+C百分比分別為 51.0、 51.8及 57.7%。
關鍵字: 烏來杜鵑、聚合酵素連鎖反應、 5.8S核糖體核酸基因、核糖體核酸內轉錄間隔區。
The entire internal transcribed spacer (ITS) region between 18S and 26S ribosomal RNA (rRNA) genes of Rhododendron kanehirai Wilson was amplified by polymerase chain reaction (PCR). The length of PCR product was 756 bp. The sequence contained 70 bp of 26S rDNA, ITS region, and 43 bp of 18S rDNA. The length of ITS region was 643 bp in R. kanehirai, including 253 bp of ITS1, 164 bp of 5.8S rRNA gene, and 226 bp of ITS2. The G+C contents of ITS1, 5.8S rDNA, and ITS2 regions were 51.0, 51.8, and 57.7%, respectively. Key words: Rhododendron kanehirai, polymerase chain reaction (PCR); 5.8S rDNA, internal transcribed spacer (ITS).