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Article

Genomic Phylogeography of Gymnocarpos przewalskii (Caryophyllaceae): Insights into Habitat Fragmentation in Arid Northwestern China

1
State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
2
National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China
*
Author to whom correspondence should be addressed.
Diversity 2020, 12(9), 335; https://doi.org/10.3390/d12090335
Received: 10 July 2020 / Revised: 13 August 2020 / Accepted: 17 August 2020 / Published: 31 August 2020
(This article belongs to the Special Issue Evolutionary Ecology and Conservation of Native Plants)
Extensive range of deserts and gobis (rocks) had promoted habitat fragmentation of species in arid northwestern China. Distribution of endangered Gymnocarpos przewalskii Maxim. covers most of gobis (rocks) and desert terrain across arid regions of northwestern China. In the present study, we had employed genomic phylogeographical analysis to investigate population structure of G. przewalskii and test the effect of environmental conditions on spatial pattern of genetic diversity. Results showed four groups were identified from east to west: Edge of the Alxa Desert, Hexi Corridor, Hami Basin, and North edge of the Tarim Basin. Genetic diversity was at an equal level among four groups. General linear model (GLM) analysis showed spatial pattern of genetic diversity was significant correlated with three habitat variables including habitat suitability at present (Npre) and last glacial maximum (LGM) (NLGM) periods, and locality habitat stability (NStab). It concluded that habitat fragmentation had triggered lineage divergences of G. przewalskii in response to long-term aridification. Genome-wide single nucleotide polymorphisms (SNPs) could increase the ability of clarifying population structures in comparison with traditional molecular markers. Spatial pattern of genetic diversity was determined by fragmented habitats with high habitat suitability (Npre and NLGM) and stability (NStab). At last, we propose to establish four conservation units which are in consistent with the population grouping to maintain the genetic integrity of this endangered species. View Full-Text
Keywords: arid northwestern China; barcoding; conservation genetics; genome wide SNP; genomic phylogeography; Gymnocarpos przewalskii; habitat fragmentation arid northwestern China; barcoding; conservation genetics; genome wide SNP; genomic phylogeography; Gymnocarpos przewalskii; habitat fragmentation
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MDPI and ACS Style

Zhang, H.-X.; Wang, Q.; Jia, S.-W. Genomic Phylogeography of Gymnocarpos przewalskii (Caryophyllaceae): Insights into Habitat Fragmentation in Arid Northwestern China. Diversity 2020, 12, 335. https://doi.org/10.3390/d12090335

AMA Style

Zhang H-X, Wang Q, Jia S-W. Genomic Phylogeography of Gymnocarpos przewalskii (Caryophyllaceae): Insights into Habitat Fragmentation in Arid Northwestern China. Diversity. 2020; 12(9):335. https://doi.org/10.3390/d12090335

Chicago/Turabian Style

Zhang, Hong-Xiang, Qian Wang, and Su-Wen Jia. 2020. "Genomic Phylogeography of Gymnocarpos przewalskii (Caryophyllaceae): Insights into Habitat Fragmentation in Arid Northwestern China" Diversity 12, no. 9: 335. https://doi.org/10.3390/d12090335

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