The simplified genome sequencing method detects the effects of the genomic differentiation of large-toothed spring moss.

The mountainous species in Nanling region of China are rich in species, have many unique components, have a high degree of heterogeneity in habitats, and the karst and Danxia landscapes are interlaced, presenting a typical special soil habitat island (habitat islands).
the significance of the mechanism of differentiation and driving of plant population differentiation in special habitats is of great significance to understanding the formation and maintenance mechanism of plant diversity.
primulina species rich in diversity, unique, is a typical special soil habitat plant, of which P.juliae is distributed in karst and Danxia soil, is an ideal research material to explore the special soil habitat plant adaptability and species formation.
recently, wang Jing, Feng Chao and other researchers at the South China Botanical Garden of the Chinese Academy of Sciences, under the guidance of researcher Kang Ming, used the method of group genomics research that simplified genome sequencing (RAD) to detect the effects of genetic drift and dis"sistization selection on the genomic differentiation of large-toothed spring moss.
results show that the genetic diversity of the large-toothed spring moss population is low, the effective population is small, the strong bottleneck effect and the significant distance isolation suggest that genetic drift may be an important evolutionary driving force for the species.
redundancy analysis (reduandancy analysis) shows that soil habitats and climatic factors significantly influence genomic variation.
environmental factors influence genomic variation to a greater extent than spatial geography.
these results suggest that local adaptation greatly contributes to the genetic differentiation of the population.
THE SNP's analysis of environmental associations and anomalous sites identified 31 SNP sites that may be disselected, of which 26 SNP scants were related to soil adaptation-related genes.
, in particular soil island habitats, although the non-adaptive evolution process is obvious, adaptive evolutionary mechanisms may play a more important role.
this study provides new insights into the adaptive evolution and species formation of special soil habitat species.
research published in Genome Biology and Evolution.
research has been supported by the National Natural Science Foundation of China, Guangdong Joint Fund key projects, the Chinese Academy of Sciences International Talent Program, etc.
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