Comparison of the X and Y chromosome organization in Silene latifolia |
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Authors: | Zluvova Jitka Janousek Bohuslav Negrutiu Ioan Vyskot Boris |
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Institution: | Laboratory of Plant Developmental Genetics, Institute of Biophysics, Academy of Sciences of the Czech Republic, 612 65 Brno, Czech Republic. jitka@ibp.cz |
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Abstract: | 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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