Gap-free X and Y chromosome assemblies of Salix arbutifolia reveal an evolutionary change from male to female heterogamety in willows, without a change in the position of the sex-determining locus

© 2024 The Authors New Phytologist © 2024 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 242(2024), 6 vom: 20. Mai, Seite 2872-2887
1. Verfasser: Wang, Yi (VerfasserIn)
Weitere Verfasser: Gong, Guang-Nan, Wang, Yuan, Zhang, Ren-Gang, Hörandl, Elvira, Zhang, Zhi-Xiang, Charlesworth, Deborah, He, Li
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Salix arbutifolia evolutionary strata heteromorphism inversion pericentromeric regions sex chromosome turnovers
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520 |a In the Vetrix clade of Salix, a genus of woody flowering plants, sex determination involves chromosome 15, but an XY system has changed to a ZW system. We studied the detailed genetic changes involved. We used genome sequencing, with chromosome conformation capture (Hi-C) and PacBio HiFi reads to assemble chromosome level gap-free X and Y of Salix arbutifolia, and distinguished the haplotypes in the 15X- and 15Y-linked regions, to study the evolutionary history of the sex-linked regions (SLRs). Our sequencing revealed heteromorphism of the X and Y haplotypes of the SLR, with the X-linked region being considerably larger than the corresponding Y region, mainly due to accumulated repetitive sequences and gene duplications. The phylogenies of single-copy orthogroups within the SLRs indicate that S. arbutifolia and Salix purpurea share an ancestral SLR within a repeat-rich region near the chromosome 15 centromere. During the change in heterogamety, the X-linked region changed to a W-linked one, while the Z was derived from the Y 
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650 4 |a Salix arbutifolia 
650 4 |a evolutionary strata 
650 4 |a heteromorphism 
650 4 |a inversion 
650 4 |a pericentromeric regions 
650 4 |a sex chromosome turnovers 
700 1 |a Gong, Guang-Nan  |e verfasserin  |4 aut 
700 1 |a Wang, Yuan  |e verfasserin  |4 aut 
700 1 |a Zhang, Ren-Gang  |e verfasserin  |4 aut 
700 1 |a Hörandl, Elvira  |e verfasserin  |4 aut 
700 1 |a Zhang, Zhi-Xiang  |e verfasserin  |4 aut 
700 1 |a Charlesworth, Deborah  |e verfasserin  |4 aut 
700 1 |a He, Li  |e verfasserin  |4 aut 
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