期刊
HYDROBIOLOGIA
卷 666, 期 1, 页码 3-9出版社
SPRINGER
DOI: 10.1007/s10750-010-0563-6
关键词
Copepod; Cyclopoid; Nuclear rDNA; Paracyclopina nana; Transcription repeat unit
资金
- Korea Research Foundation [KRF-2006-C00699, KRF-2007-355-C00059]
- National Research Foundation of Korea [2007-355-C00059] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
As a special reference of the nuclear cistron rDNA of cyclopoid copepods, we obtained the entire DNA sequence of a single rDNA repeat unit from Paracyclopina nana (Cyclopoida: Cyclopettidae). The genomic organization of P. nana rDNA (7,974 bp, 51.7% of GC) was observed to be 18S-ITS1-5.8S-ITS2-28S-IGS in order. Comparative analyses of the rDNA between P. nana and other copepods showed that the intergenic spacer (IGS) was highly informative and divergent, while other coding regions are relatively conserved. We detected eleven poly(T) tracts in the IGS, demonstrating the high AT content in this region. In addition, many sub-repeat sequence patterns (e.g., AG, AT, GC, CCG, TC) such as microsatellites were identified from the rDNA IGS of P. nana. In this article, we show the first complete sequence of rDNA from the order Cyclopoida, providing a better understanding of molecular characteristics in molecular taxonomy.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据