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Original Article

Strong Accumulation of Chloroplast DNA in the Y Chromosomes of Rumex acetosa and Silene latifolia

Steflova P.a, b · Hobza R.a, c · Vyskot B.a · Kejnovsky E.a, b

Author affiliations

aDepartment of Plant Developmental Genetics, Institute of Biophysics, ASCR, and bLaboratory of Genome Dynamics, CEITEC - Central European Institute of Technology, Masaryk University, Brno, and cLaboratory of Molecular Cytogenetics and Cytometry, Centre of the Region Haná for Biotechnological and Agricultural Research Institute of Experimental Botany, Olomouc, Czech Republic

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Article / Publication Details

First-Page Preview
Abstract of Original Article

Accepted: May 21, 2013
Published online: September 14, 2013
Issue release date: December 2013

Number of Print Pages: 7
Number of Figures: 3
Number of Tables: 0

ISSN: 1424-8581 (Print)
eISSN: 1424-859X (Online)

For additional information: http://www.karger.com/CGR

Abstract

Chloroplast DNA (cpDNA) sequences are often found in plant nuclear genomes, but patterns of their chromosomal distribution are not fully understood. The distribution of cpDNA on the sex chromosomes can only be studied in dioecious plant species possessing heteromorphic sex chromosomes. We reconstructed the whole chloroplast genome of Rumex acetosa (sorrel, XY1Y2 system) from next generation sequencing data. We systematically mapped the chromosomal localization of various regions of cpDNA in R. acetosa and in Silene latifolia (white campion, XY system) using fluorescence in situ hybridization. We found that cpDNA was accumulated on the Y chromosomes of both studied species. In R. acetosa, the entire Y chromosome gathered all parts of cpDNA equally. On the contrary, in S. latifolia, the majority of the cpDNA, corresponding to the single copy regions, was localized in the centromere of the Y chromosome, while the inverted repeat region was present also in other loci. We found a stronger accumulation of cpDNA on the more degenerated Y1 and Y2 chromosomes of R. acetosa than in evolutionary younger S. latifolia Y chromosome. Our data stressed the prominent role of the Y chromosome centromere in cpDNA accumulation.

© 2013 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Article

Accepted: May 21, 2013
Published online: September 14, 2013
Issue release date: December 2013

Number of Print Pages: 7
Number of Figures: 3
Number of Tables: 0

ISSN: 1424-8581 (Print)
eISSN: 1424-859X (Online)

For additional information: http://www.karger.com/CGR


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