气候变化领域集成服务门户(CCPortal): Study on the Origin and Classification of Two Poplar Species on the Qinghai-Tibet Plateau

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DOI	10.3390/f14051003
	Study on the Origin and Classification of Two Poplar Species on the Qinghai-Tibet Plateau
	Shi, Yu-Jie; Mi, Jia-Xuan; Huang, Jin-Liang; He, Fang; Chen, Liang-Hua; Wan, Xue-Qin
发表日期	2023
EISSN	1999-4907
卷号	14 期号:5
英文摘要	Poplar not only has important ecological and economic value, but also is a model woody plant in scientific research. However, due to the rich morphological variation and extensive interspecific hybridization, the taxonomy of the genus Populus is very confused, especially in the Sect. Tacamahaca. Based on the extensive investigation of Populus on the Plateau and its surrounding areas, two taxa (Populus kangdingensis and Populus schneideri var. tibetica) that are very similar in morphology and habitat and are in doubt in taxonomy were found. First of all, we set up 14 sample sites, carried out morphological investigation and statistics, and found that there were a few morphological traits that could be distinguished between the two taxa. Further phylogenetic analysis based on the whole genome resequencing data showed that the two taxa were hybrid progenies of P. xiangchengensis and P. simonii. Through gene flow detection and genetic differentiation analysis, it was found that there was still strong gene flow from P. xiangchengensis to the two taxa, and there was almost no differentiation between the two taxa. Therefore, P. schneideri var. tibetica should be classified into P. kangdingensis as same taxa. Finally, the population history was reconstructed by PSMC and ABC models, and it was found that they all belonged to a hybrid origin, and the change in population size was closely related to the Quaternary ice age. In addition, the hybrid population has better adaptability, and the suitable distribution area may expand in the future. This study provided a novel and comprehensive method for the phylogeny of Populus and laid a foundation for the development and utilization of poplar resources.
关键词	classification Populus morphology genomics origin adaptability
英文关键词	CHLOROPLAST TRNT-TRNF; GENETIC-RELATIONSHIPS; NUCLEOTIDE-SEQUENCES; POPULUS-TRICHOCARPA; GENOME; HYBRIDIZATION; COMPONENTS; PHYLOGENY; FORMAT
WOS研究方向	Forestry
WOS记录号	WOS:000997993200001
来源期刊	FORESTS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283444
作者单位	Sichuan Agricultural University
推荐引用方式 GB/T 7714	Shi, Yu-Jie,Mi, Jia-Xuan,Huang, Jin-Liang,et al. Study on the Origin and Classification of Two Poplar Species on the Qinghai-Tibet Plateau[J],2023,14(5).
APA	Shi, Yu-Jie,Mi, Jia-Xuan,Huang, Jin-Liang,He, Fang,Chen, Liang-Hua,&Wan, Xue-Qin.(2023).Study on the Origin and Classification of Two Poplar Species on the Qinghai-Tibet Plateau.FORESTS,14(5).
MLA	Shi, Yu-Jie,et al."Study on the Origin and Classification of Two Poplar Species on the Qinghai-Tibet Plateau".FORESTS 14.5(2023).