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Vol. 114, No. 1, 2006
Issue release date: May 2006
Section title: Original Article
Cytogenet Genome Res 114:77–82 (2006)
(DOI:10.1159/000091932)

Nuclear DNA content and nuclear and cell volume are positively correlated in angiosperms

Jovtchev G. · Schubert V. · Meister A. · Barow M. · Schubert I.
aInstitute of Plant Genetics and Crop Plant Research (IPK), Gatersleben (Germany); bCentral Laboratory of General Ecology (CLGE), Bulgarian Academy of Science, Sofia (Bulgaria); cAcademic Transfusion Medicine Unit and Cancer Division, Section of Experimental Haematology, Royal Infirmary, Glasgow (UK)

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Article / Publication Details

First-Page Preview
Abstract of Original Article

Published online: 5/24/2006

Number of Print Pages: 6
Number of Figures: 2
Number of Tables: 1

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

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

Abstract

Volumes of flow sorted nuclei were analyzed from two highly endopolyploid (diploids with endopolyploid tissues) species (Arabidopsis thaliana and Barbarea stricta), from a less endopolyploid species (Allium cepa) and from two non-endopolyploid species (Chrysanthemum multicolor and Fritillaria uva-vulpis). Intraspecific as well as interspecific comparisons revealed a highly positive correlation (r >0.99) between DNA content and nuclear volume. No significant differences between expected and measured nuclear volumes were noted indicating that chromatin packing is not increased with increasing DNA content in the tested plant species. In epidermis cells of A. thaliana, A. cepa and Ch. multicolor, a lower (r between 0.6 and 0.7) but significant positive correlation between nuclear volume and cell volume was found. This correlation is compatible with the hypothesis that endopolyploidization (EP = consecutive replication cycles not separated by nuclear and cell divisions) might speed up the growth of endopolyploid species and compensate for small genome size.


  

Author Contacts

Request reprints from Ingo Schubert
Institute of Plant Genetics and Crop Plant Research (IPK)
Corrensstr. 3, DE–06466 Gatersleben (Germany)
telephone: +49-390482-5239; fax: +49-390482-5137
e-mail: schubert@ipk-gatersleben.de

  

Article Information

Supported by a grant of the Kultusministerium of the Land Sachsen-Anhalt (3512A/0503T).

Manuscript received: 13 September 2005
Accepted in revised form for publication by M. Schmid,: 20 October 2005.
Number of Print Pages : 6
Number of Figures : 2, Number of Tables : 1, Number of References : 28

  

Publication Details

Cytogenetic and Genome Research

Vol. 114, No. 1, Year 2006 (Cover Date: May 2006)

Journal Editor: Schmid, M. (Würzburg)
ISSN: 1424–8581 (print), 1424–859X (Online)

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


Article / Publication Details

First-Page Preview
Abstract of Original Article

Published online: 5/24/2006

Number of Print Pages: 6
Number of Figures: 2
Number of Tables: 1

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

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


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