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Originally published as Genetics Published Articles Ahead of Print on May 6, 2005.
Genetics, Vol. 170, 1431-1434, July 2005, Copyright © 2005
doi:10.1534/genetics.105.040444
Comparison of the X and Y Chromosome Organization in Silene latifolia
Jitka Zluvova*,
,1,
Bohuslav Janousek*,
Ioan Negrutiu and
Boris Vyskot*
* Laboratory of Plant Developmental Genetics, Institute of Biophysics, Academy of Sciences of the Czech Republic, 612 65 Brno, Czech Republic
Laboratoire RDP, ENS Lyon, IFR128 BioSciences Lyon-Gerland, 69364 Lyon, France
1 Corresponding author: Laboratory of Plant Developmental Genetics, Institute of Biophysics, Academy of Sciences of the Czech Republic, Kralovopolska 135, 612 65 Brno, Czech Republic.
E-mail: jitka{at}ibp.cz
Here we compare gene orders on the Silene latifolia sex chromosomes. On the basis of the deletion mapping results (11 markers and 23 independent Y chromosome deletion lines used), we conclude that a part of the Y chromosome (covering a region corresponding to at least 23.9 cM on the X chromosome) has been inverted. The gradient in silent-site divergence suggests that this inversion took place after the recombination arrest in this region. Because recombination arrest events followed by Y chromosome rearrangements also have been found in the human Y chromosome, this process seems to be a general evolutionary pathway.
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