NDLI: Sequence polymorphisms in ribosomal RNA genes and variations in chromosomal loci of Oenothera odorata and O. laciniata

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Sequence polymorphisms in ribosomal RNA genes and variations in chromosomal loci of Oenothera odorata and O. laciniata

Content Provider	Springer Nature Link
Author	Seo, Jun Hyung Bae, Hyo Geun Park, Da Hee Kim, Beom Seok Lee, Jong Wook Lee, Jung In Kim, Dong Hyun Lee, Seok Won Seo, Bong Bo
Copyright Year	2013
Abstract	Numerous studies on Oenothera species have been investigated for the physiological and ecological characteristics. However, no such an information based on molecular cytogenetic has yet been introduced, in turn, is very essential for identifying sequence polymorphisms of rRNA genes with their loci on mitotic phases for further biological researches. In this study, sequence variations of rRNA genes in Oenothera odorata and O. laciniata were examined to identify informative factors as unique or repeat sequences in intra- and inter-specific variations. Intra-specific variation revealed that the sequences of the rRNA genes including the spacer regions were highly conserved revealing only a few variations. From the inter-specific variation, spacer regions of species were completely different as (1) non-homologous sequences in NTS and (2) different type repeat sequences in ITS 1, 2 and 5.8S rRNA, whereas the remaining coding regions were highly conserved. FISH was carried out on mitotic phases using the 5S rDNA of the analyzed sequences. From the interphase and metaphase chromosomes of the examined species, two loci of 5S rDNA in O. odorata and four loci in O. laciniata were confirmed on the telomeric region of the short arm. Due to the small size and unclear centromere of the chromosomes, karyotype could not be completed. However, we confirmed that the chromosomes are organized by meta- and acrocentric chromosomes and the chromosomes with identified loci were assumed to be paired by the location of loci at the telomeric region on the short arm with relative lengths.
Starting Page	117
Ending Page	124
Page Count	8
File Format	PDF
ISSN	19769571
Journal	Genes & Genomics
Volume Number	35
Issue Number	1
e-ISSN	20929293
Language	English
Publisher	The Genetics Society of Korea
Publisher Date	2013-01-29
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	FISH Informative factor Mitotic phase Oenothera rRNA gene Microbial Genetics and Genomics Plant Genetics & Genomics Animal Genetics and Genomics Human Genetics
Content Type	Text
Resource Type	Article
Subject	Genetics Biochemistry Molecular Biology

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