The Silene latifolia genome and its giant Y chromosome
In some species, the Y is a tiny chromosome but the dioecious plant Silene latifolia has a
giant∼ 550 Mb Y chromosome, which has remained unsequenced so far. Here we used a
hybrid approach to obtain a high-quality male S. latifolia genome. Using mutants for sexual
phenotype, we identified candidate sex-determining genes on the Y. Comparative analysis
of the sex chromosomes with outgroups showed the Y is surprisingly rearranged and
degenerated for a∼ 11 MY-old system. Recombination suppression between X and Y …
giant∼ 550 Mb Y chromosome, which has remained unsequenced so far. Here we used a
hybrid approach to obtain a high-quality male S. latifolia genome. Using mutants for sexual
phenotype, we identified candidate sex-determining genes on the Y. Comparative analysis
of the sex chromosomes with outgroups showed the Y is surprisingly rearranged and
degenerated for a∼ 11 MY-old system. Recombination suppression between X and Y …
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