Journal
HYDROBIOLOGIA
Volume 666, Issue 1, Pages 3-9Publisher
SPRINGER
DOI: 10.1007/s10750-010-0563-6
Keywords
Copepod; Cyclopoid; Nuclear rDNA; Paracyclopina nana; Transcription repeat unit
Categories
Funding
- 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)
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available