The age of the Arabidopsis thaliana genome duplication

The age of the Arabidopsis thaliana genome duplication We estimate the timing of the Arabidopsis thaliana whole-genome duplication by means of phylogenetic and statistical analysis, and propose two possible scenarios for the duplication. The first one, based on the assumption that the duplicated segments diverged from an autotetraploid form, places the duplication at about 38 million years ago, after the Arabidopsislineage diverged from that of soybean (Glycine max) and before it diverged from its sister genus, Brassica. The second scenario assumes that the ancestor was allotetraploid, and suggests that the duplication is younger than 38 million years and may have contributed to the Arabidopsis-Brassica divergence. In each case, our estimate places the age of the genome duplication as significantly younger than previously reported. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

The age of the Arabidopsis thaliana genome duplication

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2003 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1023001130337
Publisher site
See Article on Publisher Site

Abstract

We estimate the timing of the Arabidopsis thaliana whole-genome duplication by means of phylogenetic and statistical analysis, and propose two possible scenarios for the duplication. The first one, based on the assumption that the duplicated segments diverged from an autotetraploid form, places the duplication at about 38 million years ago, after the Arabidopsislineage diverged from that of soybean (Glycine max) and before it diverged from its sister genus, Brassica. The second scenario assumes that the ancestor was allotetraploid, and suggests that the duplication is younger than 38 million years and may have contributed to the Arabidopsis-Brassica divergence. In each case, our estimate places the age of the genome duplication as significantly younger than previously reported.

Journal

Plant Molecular BiologySpringer Journals

Published: Oct 7, 2004

References

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