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Identification of Extrachromosomal Circular DNA in Hop via Rolling Circle Amplification

Identification of Extrachromosomal Circular DNA in Hop via Rolling Circle Amplification During a survey for new viruses affecting hop plants, a circular DNA molecule was identified via rolling circle amplification (RCA) and later characterized. A small region of the 5.7-kb long molecule aligned with a microsatellite region in the Humulus lupulus genome, and no coding sequence was identified. Sequence analysis and literature review suggest that the small DNA molecule is an extranuclear DNA element, specifically, an extrachromosomal circular DNA (eccDNA), and its presence was confirmed by electron microscopy. This work is the first report of eccDNAs in the family Cannabaceae. Additionally, this work highlights the advantages of using RCA to study extrachromosomal DNA in higher plants. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Cytogenetic and Genome Research Karger

Identification of Extrachromosomal Circular DNA in Hop via Rolling Circle Amplification

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References (17)

Publisher
Karger
Copyright
© 2016 S. Karger AG, Basel
ISSN
1424-8581
eISSN
1424-859X
DOI
10.1159/000445849
Publisher site
See Article on Publisher Site

Abstract

During a survey for new viruses affecting hop plants, a circular DNA molecule was identified via rolling circle amplification (RCA) and later characterized. A small region of the 5.7-kb long molecule aligned with a microsatellite region in the Humulus lupulus genome, and no coding sequence was identified. Sequence analysis and literature review suggest that the small DNA molecule is an extranuclear DNA element, specifically, an extrachromosomal circular DNA (eccDNA), and its presence was confirmed by electron microscopy. This work is the first report of eccDNAs in the family Cannabaceae. Additionally, this work highlights the advantages of using RCA to study extrachromosomal DNA in higher plants.

Journal

Cytogenetic and Genome ResearchKarger

Published: Jan 1, 2016

Keywords: Hop; Rolling circle amplification; Extrachromosomal DNA; Circular DNA

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