Significance of Satellite DNA Revealed by Conservation of a Widespread Repeat DNA Sequence Among Angiosperms

The analysis of plant genome structure and evolution requires comprehensive characterization of repetitive sequences that make up the majority of plant nuclear DNA. In the present study, we analyzed the nature of pCt Kpn I-I and pCt Kpn I-II tandem repeated sequences, reported earlier in Carthamus t...

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Bibliographic Details
Published in:Applied biochemistry and biotechnology 2014-08, Vol.173 (7), p.1790-1801
Main Authors: Mehrotra, Shweta, Goel, Shailendra, Raina, Soom Nath, Rajpal, Vijay Rani
Format: Article
Language:English
Subjects:
Biochemistry
Biological and medical sciences
Biotechnology
Carthamus tinctorius
Chemistry
Chemistry and Materials Science
Conserved Sequence
DNA, Plant - genetics
DNA, Satellite - genetics
Evolutionary biology
Flowers & plants
Fundamental and applied biological sciences. Psychology
Genome, Plant - genetics
Genomes
Magnoliopsida - genetics
Nature conservation
Repetitive Sequences, Nucleic Acid - genetics
Satellite DNA
Sequence Alignment
Taxa
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Summary:The analysis of plant genome structure and evolution requires comprehensive characterization of repetitive sequences that make up the majority of plant nuclear DNA. In the present study, we analyzed the nature of pCt Kpn I-I and pCt Kpn I-II tandem repeated sequences, reported earlier in Carthamus tinctorius . Interestingly, homolog of pCt Kpn I-I repeat sequence was also found to be present in widely divergent families of angiosperms. pCt Kpn I-I showed high sequence similarity but low copy number among various taxa of different families of angiosperms analyzed. In comparison, pCt Kpn I-II was specific to the genus Carthamus and was not present in any other taxa analyzed. The molecular structure of pCt Kpn I-I was analyzed in various unrelated taxa of angiosperms to decipher the evolutionary conserved nature of the sequence and its possible functional role.
ISSN:0273-2289
1559-0291
DOI:10.1007/s12010-014-0966-3