Phylogeographic investigation of Elaeagnus mollis revealed potential glacial refugia and allopatric divergence in central China

Du, Shuhui; Ye, Zhanyang; Hu, Xiaoyan; Duan, Aiguo; Yu, Wen-Dong; Jian-guo, Zhang; Wang, Zhaoshan

doi:10.1007/s00606-020-01696-2

Cited by 5 publications

(6 citation statements)

References 45 publications

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“…Group G2 contained 28 species in the upper left corner of Figure 4B , and the groups G1 and G3 contained 24 species in the bottom right of Figure 4B . Therefore, the result is also consistent with some reported articles that the Elaeagnus species is native to Eurasia, northeastern Australia, and North America and distributes into the two river basins and the central plains of China along the Hexi corridor, and then to the southeast coast, southwest and north China ( Qin et al, 2007 ; Du et al, 2020 ). The tree species dominated by deciduous shrubs formed the G3 group with narrower leaves, which were mainly distributed in high altitude or high latitude regions, including Gansu, Yunnan, and Guizhou provinces.…”

Section: Resultssupporting

confidence: 91%

Phylogenetic Analysis of Elaeagnus L. in China: A Basis for Genetic Improvement of a Berry Crop

et al. 2022

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Elaeagnus L. is found in wild or grown as ornamental plants and is increasingly regarded as underutilized berry shrubs by breeders. This genus has cosmopolitan distribution with various species widely distributed in China, Europe, the United States, and Canada. Interspecific hybrids, which have been reported several times, have attracted intense interest from plant breeders attempting to develop a fruit crop of Elaeagnus. Orthogonal projections to latent structures discriminant analysis (OPLS-DA) is a powerful statistical modeling tool that provides insights into separations between experimental groups. In this study, the molecular phylogeny of Elaeagnus species was first discussed using the ITS and matK sequences for guiding the construction of a genetic basis pool. A morphological OPLS-DA clustering model based on the genetic divergence was also constructed for the first time, which effectively realized the morphological grouping of Chinese Elaeagnus species. The results showed that a total of 10 wild species widely distributed in China have the potential to develop fruit crops. Particularly, Elaeagnus conferta has the potential to provide a founder species with a large fruit size, while Elaeagnus Gonyanthes has the potential to provide important genetic resources with long pedicel. Elaeagnus lanceolata and Elaeagnus delavayi could be used to domesticate hybrids without spines, and the other five climbing shrubs could be used to develop high-yield crown-type commercial cultivars for automated field management. The top five contributing morphological traits affecting the current clustering model were V9 (flower color), V1 (flowering), V5 (evergreen or deciduous), V3 (leaf size), and V2 (fruiting). Furthermore, the grouping analysis indicated that the V9 was the most important factor affecting morphological clustering. Thereafter, the temporally calibrated phylogeny inferred from the matK sequence was used to reconstruct the origin and evolution of the genus Elaeagnus, and the results inferred an interesting geographic distribution pattern and potential cross-species interactions of Elaeagnus species at low latitudes in China. Our study also highlighted dispersal pattern investigation and genetic background analysis to improve future practices and policies related to species introduction of genetic basis pool.

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Section: Resultssupporting

confidence: 91%

Phylogenetic Analysis of Elaeagnus L. in China: A Basis for Genetic Improvement of a Berry Crop

et al. 2022

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“…5A, ) that could result in a higher adaptation ability. These results suggest that the Qinling Mountains in East Asia might have served as potential glacial refugia and/or as a transition center to maintain the rich genetic variations of this species (Du et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Drivers of intraspecific differentiation of an alpine cold‐tolerant herb, Notopterygium oviforme: Roles of isolation by distance and ecological factors

Liu

Shang

Cheng

et al. 2022

J of Sytematics Evolution

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Determining the mechanisms that drive phenotypic and genetic divergence by species has been a central topic in evolutionary biology for many years. However, the relative contributions of isolation by distance (IBD) and environment factors to species divergence are largely unknown in perennial herbs in East Asia. In this study, we collected population genetic samples of the cold-tolerant perennial herb Notopterygium oviforme R. H. Shan in central China. We integrated the population transcriptomes, whole chloroplast genomes, genotyping-bysequencing, microsatellite markers, and ecological factors to determine the relative contributions of geography, climate, and soil factors to genetic, chemical, and phenotypic divergence. A clear genetic distinction was identified between the West Qinling and East Qinling Mountains geographical groups of N. oviforme based on various molecular datasets. Interestingly, obvious niche conservation might have been responsible for the similarity of most of the leaf functional traits in the two groups. Multiple matrix regression with randomization analysis showed that the spatial intraspecific divergence pattern was mainly due to IBD rather than isolation by environment. In addition, transcriptomic expression divergence and some ecological factors have played key roles in intraspecific lineage differentiation. Approximate Bayesian Computation showed that both lineages have experienced historical population expansion and recent range contraction. Molecular dating suggested that intraspecific divergence was closely associated with dramatic uplifts of the Qinling Mountains in East Asia. These results demonstrate that geographical, geological, and environmental factors together shaped cryptic intraspecific diversification and shifts in the population dynamics of the perennial cold-tolerant herb N. oviforme.

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“…However, phylogeographic research concerning Central China (such as the Loess Plateau and adjacent areas) has been rarely conducted (Wen et al, 2020 ). Some endemic species are narrowly and concentrated distributed in Central China, such as Xanthoceras sorbifolia Bunge (Zhu, 2016 ) and Elaeagnus mollis Diels (Du et al, 2020 ). Furthermore, the Quaternary glaciation cycles had little effect on this area, glaciers only formed in scattered areas of the Loess Plateau and lasted for a relatively short period (Zheng et al, 1998 ).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the Quaternary glaciation cycles had little effect on this area, glaciers only formed in scattered areas of the Loess Plateau and lasted for a relatively short period (Zheng et al, 1998 ). Phylogeographic study of E. mollis , an endangered deciduous shrub species restricted distributed in the Loess Plateau, revealed multiple potential glacial refugia and allopatric divergence in Central China (Du et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity and population dynamic of Ziziphus jujuba var. spinosa (Bunge) Hu ex H. F. Chow in Central China

Yang

et al. 2022

Ecology and Evolution

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Phylogeographic research concerning Central China has been rarely conducted. Population genetic and phylogeography of Ziziphus jujuba var. spinosa (also called sour jujube) were investigated to improve our understanding of plant phylogeographic patterns in Central China. Single‐copy nuclear gene markers and complete chloroplast genome data were applied to 328 individuals collected from 21 natural populations of sour jujube in China. Nucleotide variation of sour jujube was relatively high ( π = 0.00720, θ w = 0.00925), which resulted from the mating system and complex population dynamics. Analysis of molecular variation analysis revealed that most of the total variation was attributed to variation within populations, and a high level of genetic differentiation among populations was detected ( F st = 0.197). Relatively low long‐distance dispersal capability and vitality of pollen contributed to high genetic differentiation among populations. Differences in the environmental conditions and long distance among populations further restricted gene flow. Structure clustering analysis uncovered intraspecific divergence between central and marginal populations. Migrate analysis found a high level of gene flow between these two intraspecific groups. Bayesian skyline plot detected population expansion of these two intraspecific groups. Network and phylogeny analysis of chloroplast haplotypes also found intraspecific divergence, and the divergence time was estimated to occur at about 55.86 Ma. Haplotype native to the Loess Plateau was more ancient, and multiple glacial refugia of sour jujube were found to locate at the Loess Plateau, areas adjacent to the Qinling Mountains and Tianmu Mountains. Species distribution model analysis found a typical contraction‐expansion model corresponding to the Quaternary climatic oscillations. In the future, the distribution of sour jujube may shift to high‐latitude areas. This study provides new insights for phylogeographic research of temperate plant species distributed in Central China and sets a solid foundation for the application of the scientific management strategy of Z. jujuba var. spinosa .

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Phylogeographic investigation of Elaeagnus mollis revealed potential glacial refugia and allopatric divergence in central China

Cited by 5 publications

References 45 publications

Phylogenetic Analysis of Elaeagnus L. in China: A Basis for Genetic Improvement of a Berry Crop

Phylogenetic Analysis of Elaeagnus L. in China: A Basis for Genetic Improvement of a Berry Crop

Drivers of intraspecific differentiation of an alpine cold‐tolerant herb, Notopterygium oviforme: Roles of isolation by distance and ecological factors

Genetic diversity and population dynamic of Ziziphus jujuba var. spinosa (Bunge) Hu ex H. F. Chow in Central China

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