摘要
In many species with sex chromosomes, the Y is a tiny chromosome. However, the dioecious plant Silene latifolia has a giant ~550-megabase Y chromosome, which has remained unsequenced so far. We used a long- and short-read hybrid approach to obtain a high-quality male genome. Comparative analysis of the sex chromosomes with their homologs in outgroups showed that the Y is highly rearranged and degenerated. Recombination suppression between X and Y extended in several steps and triggered a massive accumulation of repeats on the Y as well as in the nonrecombining pericentromeric region of the X, leading to giant sex chromosomes. Using sex phenotype mutants, we identified candidate sex-determining genes on the Y in locations consistent with their favoring recombination suppression events 11 and 5 million years ago.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 630-636 |
| 页数 | 7 |
| 期刊 | Science |
| 卷 | 387 |
| 期 | 6734 |
| DOI | |
| 出版状态 | 已出版 - 7 2月 2025 |
| 已对外发布 | 是 |
指纹
探究 'The Silene latifolia genome and its giant Y chromosome' 的科研主题。它们共同构成独一无二的指纹。引用此
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