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Chromosome-scale genomes of Quercus sichourensis and Quercus rex provide insights into the evolution and adaptation of Fagaceae

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Journal of Genetics and Genomics 2024年第5期51卷 554-565页

作者： Xue Liu Weixiong Zhang Yongting Zhang Jing Yang Peng Zeng Zunzhe Tian Weibang Sun Jing Cai Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection School of Ecology and EnvironmentNorthwestern Polytechnical UniversityXi'anShaanxi 710072China Yunnan Key Laboratory for Integrative Conservation of Plant Species with Extremely Small Populations Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China

The Fagaceae,a plant family with a wide distribution and diverse adaptability,has garnered significant interest as a subject of study in plant speciation and ***,certain Fagaceae species are regarded as highly valuable wood resources due to the exceptional quality of their *** this study,we present two high-quality,chromosome-scale genome sequences for Quercus sichourensis(848.75 Mb)and Quercus rex(883.46 Mb).Comparative genomics analysis reveals that the difference in the number of plant disease resistance genes and the nonsynonymous and synonymous substitution ratio(Ka/Ks)of protein-coding genes among Fagaceae species are related to different environmental ***,most genes related to starch synthesis in the investigated Quercoideae species are located on a single chromosome,as compared to the outgroup species,Fagus ***,resequencing and population analysis of *** and *** reveal that *** has lower genetic diversity and higher deleterious mutations compared to *** high-quality,chromosome-level genomes and the population genomic analysis of the critically endangered *** and *** will provide an invaluable resource as well as insights for future study in these two species,even the genus Quercus,to facilitate their conservation.

关键词： Adaptation Quercus sichourensis Quercusrex Chromosome-scale genome assembly tandem duplication genes Extremely small populations

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