A General Model to Explain Repeated Turnovers of Sex Determination in the Salicaceae

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dc.creatorYang, Wenlu
dc.creatorWang, Deyan
dc.creatorLi, Yiling
dc.creatorZhang, Zhiyang
dc.creatorTong, Shaofei
dc.creatorLi, Mengmeng
dc.creatorZhang, Xu
dc.creatorZhang, Lei
dc.creatorRen, Liwen
dc.creatorMa, Xinzhi
dc.creatorZhou, Ran
dc.creatorSanderson, Brian J.
dc.creatorKeefover-Ring, Ken
dc.creatorYin, Tongming
dc.creatorSmart, Lawrence B.
dc.creatorLiu, Jianquan
dc.creatorDiFazio, Stephen P.
dc.creatorOlson, Matthew
dc.creatorMa, Tao
dc.date.accessioned2021-09-16T18:02:24Z
dc.date.available2021-09-16T18:02:24Z
dc.date.issued2021
dc.descriptionThis article is available under the Creative Commons CC-BY-NC license and permits non-commercial use, distribution and reproduction in any medium, provided the original work is properly cited.en_US
dc.description.abstractDioecy, the presence of separate sexes on distinct individuals, has evolved repeatedly in multiple plant lineages. However, the specific mechanisms by which sex systems evolve and their commonalities among plant species remain poorly understood. With both XY and ZW sex systems, the family Salicaceae provides a system to uncover the evolutionary forces driving sex chromosome turnovers. In this study, we performed a genome-wide association study to characterize sex determination in two Populus species, P. euphratica and P. alba. Our results reveal an XY system of sex determination on chromosome 14 of P. euphratica, and a ZW system on chromosome 19 of P. alba. We further assembled the corresponding sex-determination regions, and found that their sex chromosome turnovers may be driven by the repeated translocations of a Helitron-like transposon. During the translocation, this factor may have captured partial or intact sequences that are orthologous to a type-A cytokinin response regulator gene. Based on results from this and other recently published studies, we hypothesize that this gene may act as a master regulator of sex determination for the entire family. We propose a general model to explain how the XY and ZW sex systems in this family can be determined by the same RR gene. Our study provides new insights into the diversification of incipient sex chromosomes in flowering plants by showing how transposition and rearrangement of a single gene can control sex in both XY and ZW systems.en_US
dc.identifier.citationWenlu Yang, Deyan Wang, Yiling Li, Zhiyang Zhang, Shaofei Tong, Mengmeng Li, Xu Zhang, Lei Zhang, Liwen Ren, Xinzhi Ma, Ran Zhou, Brian J Sanderson, Ken Keefover-Ring, Tongming Yin, Lawrence B Smart, Jianquan Liu, Stephen P DiFazio, Matthew Olson, Tao Ma, A General Model to Explain Repeated Turnovers of Sex Determination in the Salicaceae, Molecular Biology and Evolution, Volume 38, Issue 3, March 2021, Pages 968–980, https://doi.org/10.1093/molbev/msaa261en_US
dc.identifier.urihttps://doi.org/10.1093/molbev/msaa261
dc.identifier.urihttps://hdl.handle.net/2346/87938
dc.language.isoengen_US
dc.subjectDioecyen_US
dc.subjectSex Determinationen_US
dc.subjectSex Chromosome Turnoveren_US
dc.subjectGenomeen_US
dc.subjectPopulusen_US
dc.titleA General Model to Explain Repeated Turnovers of Sex Determination in the Salicaceaeen_US
dc.typeArticleen_US

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