Genetic Diversity Analysis and Potential Distribution Prediction of Sophora moorcroftiana Endemic to Qinghai–Tibet Plateau, China

Yang, Lan; Li, Huie; Li, Qian; Guo, Qiqiang; Li, Jiangrong

doi:10.3390/f12081106

Cited by 8 publications

(6 citation statements)

References 29 publications

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“…Studies about trees in the QTP region showed that altitude, rather than other environmental factors, was the key factor affecting genetic diversity (e.g. [53,54]), but it is not the scenario we observe in the three herbaceous gentians, although a limited number of populations were tested in this study. Finally, since our analysis did not include other environmental variables, such as soil characteristics, composition and structure, we cannot rule out that habitat adaptation to these environmental variables played a significant role in promoting genetic divergence in the three gentians, as was probably the case in European gentians [25].…”

Section: Did Climatic Preferences Contribute To Divergence?mentioning

confidence: 58%

Between allopatry and secondary contact: differentiation and hybridization among three sympatric Gentiana species in the Qinghai-Tibet Plateau

Favre

Wang

et al. 2022

BMC Plant Biol

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Background Mountains of the world host a significant portion of all terrestrial biodiversity, and the region of the Qinghai-Tibet Plateau (QTP) stands as one of the most remarkable mountain regions on Earth. Because many explosive radiations occurred there, the QTP is a natural laboratory which is ideal to investigate patterns and processes linked to speciation and diversification. Indeed, understanding how closely related and sympatric species diverged is vital to explore drivers fostering speciation, a topic only rarely investigated in the QTP. By combining genomic and environmental data, we explored the speciation process among three closely related and sympatric species, Gentiana hexaphylla, G. lawrencei and G. veitchiorum in the QTP region. Results Combining genome sizes and cytological data, our results showed that G. hexaphylla and G. veitchiorum are diploid, whereas G. lawrencei is tetraploid. Genetic clustering and phylogenetic reconstruction based on genomic SNPs indicated a clear divergence among the three species. Bayesian clustering, migrant, and D-statistic analyses all showed an obvious signature of hybridization among the three species, in particular between G. lawrencei and both G. hexaphylla and G. veitchiorum in almost all populations. Environmental variables related to precipitation and particularly temperature showed significant differences among the three gentians, and in fact a redundancy analysis confirmed that temperature and precipitation were the major climatic factors explaining the genetic differentiation among the three species. Conclusion Our study suggested that ancient hybridization, polyploidization, geological isolation and the evolution of different climatic preferences were all likely to be involved in the divergence of the three Gentiana species, as may be the case for many other taxa in the QTP region.

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Section: Did Climatic Preferences Contribute To Divergence?mentioning

confidence: 58%

Between allopatry and secondary contact: differentiation and hybridization among three sympatric Gentiana species in the Qinghai-Tibet Plateau

Favre

Wang

et al. 2022

BMC Plant Biol

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“…Previous studies on S. moorcroftiana have mainly focused on its population distribution ( Liu et al., 2020 ; Xin et al., 2021 ; Yang et al., 2021 ), soil seed banks ( Zhao et al., 2007 ), medicinal functions ( Wang et al., 2014 ; Luo et al., 2018 ), analysis of transcriptome ( Li et al., 2015 ) and verification of gene functions ( Li et al., 2017 ). In this study, we report, for the first time, the phenotypic and genotypic variations in nine seed traits and the mean repeatability of 15 accessions of S. moorcroftiana .…”

Section: Discussionmentioning

confidence: 99%

“…Because smaller seeds are usually dispersed further by abiotic factors such as water and wind. This is closely related to the external environment such as the altitude, slope, temperature and rainfall of the population ( Liao et al., 2020 ; Yang et al., 2021 ). This was also supported by the correlations between seed traits and altitude and temperature in this study.…”

Section: Discussionmentioning

confidence: 99%

Estimation of morphological variation in seed traits of Sophora moorcroftiana using digital image analysis

Dong

Guo

et al. 2023

Front. Plant Sci.

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Sophora moorcroftiana is a leguminous plant endemic to the Qinghai-Tibet Plateau. It has excellent abiotic stress tolerance and is considered an ideal species for local ecological restoration. However, the lack of genetic diversity in the seed traits of S. moorcroftiana hinders its conservation and utilization on the plateau. Therefore, in this study, genotypic variation and phenotypic correlations were estimated for nine seed traits among 15 accessions of S. moorcroftiana over two years, 2014 and 2019, respectively from 15 sample points. All traits evaluated showed significant (P< 0.05) genotypic variation. In 2014, accession mean repeatability was high for seed perimeter, length, width, and thickness, and 100-seed weight. In 2019, mean repeatability for seed perimeter and thickness, and 100-seed weight were high. The estimates of mean repeatability for seed traits across the two years ranged from 0.382 for seed length to 0.781 for seed thickness. Pattern analysis showed that 100-seed weight was significantly positively correlated with traits such as seed perimeter, length, width, and thickness, and identified populations with breeding pool potential. In the biplot, principal components 1 and 2 explained 55.22% and 26.72% of the total variation in seed traits, respectively. These accessions could produce breeding populations for recurrent selection to develop S. moorcroftiana varieties suitable for restoring the fragile ecological environment of the Qinghai-Tibet Plateau.

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“…The larger the value, the higher the reliability of the distinction between suitable and unsuitable habitats. AUC = 0.5 indicated that the model fails to judge completely, less than 0.8 indicated a low reliability and 0.9~1.0 indicated a high credibility [49]. The evaluation criteria for Kappa value and TSS were excellent, 1.0-0.85; very good, 0.7-0.85; good, 0.55-0.7; fair, 0.4-0.55; fail, <0.4 [50][51][52].…”

Section: Model Building Optimization and Evaluationmentioning

confidence: 99%

“…Due to gymnosperms low migration rate, serious fragmentation of suitable habitats and frequent human activities, it may not be able to quickly adapt to suitable range changes. Therefore, G. pensilis within and outside nature reserves must be managed through in situ and ex situ conservation, habitat wetland conservation, assisted migration and sapling conservation to avoid extinction [29,42,49,91].…”

Section: Conservation Managementmentioning

confidence: 99%

Prediction of Suitable Distribution of a Critically Endangered Plant Glyptostrobus pensilis

Zhang

Yang

et al. 2022

Forests

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Glyptostrobus pensilis is a critically endangered living fossil plant species of the Mesozoic era, with high scientific research and economic value. The aim of this study was to assess the impact of climate change on the potential habitat area of G. pensilis in East Asia. The MaxEnt (maximum entropy) model optimized by the ENMeval data package was used to simulate the potential distribution habitats of G. pensilis since the last interglacial period (LIG, 120–140 ka). The results showed that the optimized MaxEnt model has a high prediction accuracy with the area under the receiver operating characteristic curve (AUC) of 0.9843 ± 0.005. The current highly suitable habitats were found in the northeast of Jiangxi, the east of Fujian; the main climatic factors affecting the geographic distribution of G. pensilis are temperature and precipitation, with precipitation as the dominant factor. The minimum temperature of coldest month (Bio6) may be the key factor restricting the northward distribution of G. pensilis; during the LIG, it contracted greatly in the highly suitable habitat area. In the 2070s, the suitable distribution area will move northward and the area of highly suitable habitat will increase. Seasonal changes in temperature and precipitation may be important climatic factors causing the changes in geographic distribution. The results will provide a theoretical basis for the management and resource protection of G. pensilis.

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Genetic Diversity Analysis and Potential Distribution Prediction of Sophora moorcroftiana Endemic to Qinghai–Tibet Plateau, China

Cited by 8 publications

References 29 publications

Between allopatry and secondary contact: differentiation and hybridization among three sympatric Gentiana species in the Qinghai-Tibet Plateau

Between allopatry and secondary contact: differentiation and hybridization among three sympatric Gentiana species in the Qinghai-Tibet Plateau

Estimation of morphological variation in seed traits of Sophora moorcroftiana using digital image analysis

Prediction of Suitable Distribution of a Critically Endangered Plant Glyptostrobus pensilis

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