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題 名 | Universal Primers for Amplification and Sequencing a Noncoding Spacer between the atpB and rbcL Genes of Chloroplast DNA=用以複製及定序一段葉綠體DNA介於atpB及rbcL的非轉譯區間的廣用引子 |
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作 者 | 蔣鎮宇; 彭鏡毅; | 書刊名 | Botanical Bulletin of Academia Sinica |
卷 期 | 39:4 1998.10[民87.10] |
頁 次 | 頁245-250 |
分類號 | 371.8 |
關鍵詞 | 臺灣魔芋; atpB-rbcL的葉綠體基因區間; 聚合酵素連鎖反應; 擬垂枝蘚; 廣用引子; Amorphophallus henryi; atpB-rbcL chloroplast spacer; PCR; Rhytidiadelphus sp.; Universal primers; |
語 文 | 英文(English) |
中文摘要 | 本文旨在提出一對用以複製及定序一段介於葉綠體DNA之atpB及rbcL基因間的非轉 譯區間的廣用引子,引子的設計主要參考地錢、煙草及水稻的序列;用此引子複製出的產物 顯現由苔類植物,經蘚類植物,到維管束植物之區間片段有愈來愈大之趨勢,此一片段如同 其他轉譯區間,其組成為AT較優勢,由於較低的功能限制,其演化速率較快;兩近緣的蘚類 植物,尖葉擬垂枝蘚及擬垂枝蘚,之間具92.2%的相似性,插入或消失鹼基片段極為常見, 尖葉擬垂枝蘚具一個23鹼基片段消失;另外在臺灣魔芋(天南星科)發現族群間之變異,臺 灣柯(殼斗科)則發現群內個體之差異。因此,建議此一基因片段適用於亞種到屬階層的分 子系統學研究,或作為族群遺傳研究之分子標記。 |
英文摘要 | Universal primers for amplifying and sequencing a noncoding spacer between the atpB and rbcL genes of the chloroplast DNA were constructed from the published sequences of Marchantia (a liverwort), tobacco, and rice. Our results indicate an evolutionary trend of increasing spacer size from liverworts, through mosses, to vascular plants. This atpB-rbcL spacer is AT-rich, consistent with other chloroplast noncoding spacers. Due to weak functional constraints, the spacer is evolving rapidly. A sequence identity of 92.2% was observed between spacers of two closely related moss species, Rhytidiadelphus loreus and R. triquestrus. Insetion/deletion events are common in the evolution of this spacer. A 23 bp deletion occurrs in R. loreus. Variation is found between two populations of Amorphophallus henryi (Araceae) and between individuals in a populations of Pasania formosana (Fagaceae). We suggest that this spacer will be useful for molecular systematics at the subspecific, specific, and generic levels and, in some species, for population genetics studies. |
本系統中英文摘要資訊取自各篇刊載內容。