Sharp genetic discontinuity in the aridity‐sensitive <i>Lindera obtusiloba</i> (Lauraceae): solid evidence supporting the Tertiary floral subdivision in East Asia

Ye, Junwei; Bai, Wei‐Ning; Bao, Lei; Wang, Tianming; Wang, Hongfang; Ge, Jianping

doi:10.1111/jbi.13020

Cited by 40 publications

(69 citation statements)

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“…Persistence in both the northern and the southern region sustaining multiple glacial refugia during historical climatic changes has also been found in the study of Lindera obtusiloba, although the divergence time between the two regions was dated to the Pliocene (Ye et al, 2017). There exist several drivers of genetic differentiation in plants, such as isolation by dispersal limitation, colonization, and/ or adaption (Orsini, Vanoverbeke, Swillen, Mergeay, & De Meester, 2013).…”

Section: Persistence Both In the North And In The South Without Lonmentioning

confidence: 76%

Phylogeography and paleodistribution models of a widespread birch (Betula platyphylla Suk.) across East Asia: Multiple refugia, multidirectional expansion, and heterogeneous genetic pattern

Chen

Lou

2019

Ecology and Evolution

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Widespread tree species cover large geographical areas and play important roles in various vegetation types. Understanding how these species responded to historical climatic changes is important for understanding community assembly mechanisms with evolutionary and conservation implications. However, the location of refugial areas and postglacial history of widespread trees in East Asia remain poorly known. We combined microsatellite data (63 populations, 1756 individuals) and ecological niche modeling to examine the range‐wide population diversity, genetic structure, and historical demography of a pioneer tree species, Asian white birch ( Betula platyphylla Suk.) across East Asia. We found a north‐to‐south trend of declining genetic diversity and five clusters, corresponding to geographical regions. Different clusters were inferred to have diverged through Pleistocene climatic oscillations and have different expansion routes, leading to genetic admixture in some populations. Ecological niche models indicated that the distribution of B. platyphylla during the last glacial maximum still had a large latitude span with slight shifts toward southeast, and northern populations had more variable distribution ranges than those in the south during later climatic oscillations. Our results reflect the relatively stable distribution through the last glacial–interglacial cycles and recent multidirectional expansion of B. platyphylla , providing new hypotheses for the response pattern of widespread tree species to climate change. The gradual genetic pattern from northeast to southwest and alternative distribution dynamics possibly resulted from environmental differences caused by latitude and topographic heterogeneity.

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Section: Persistence Both In the North And In The South Without Lonmentioning

confidence: 76%

Phylogeography and paleodistribution models of a widespread birch (Betula platyphylla Suk.) across East Asia: Multiple refugia, multidirectional expansion, and heterogeneous genetic pattern

Chen

Lou

2019

Ecology and Evolution

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“…The PCR amplification procedure was the same as in Ye, Bai, et al. (). CodonCode Aligner 3.6.1 (http://www.codoncode.com/aligner/) was used with the Clustal module to edit and align all cpDNA sequences.…”

Section: Methodsmentioning

confidence: 99%

“…We amplified and sequenced an intron of rpl16 and three intergenic spacers (psbA-trnH, trnL-trnF and trnS-trnG) (see Table S1 in Appendix S1 in Supporting Information) for all individuals sampled ( Table 1). The PCR amplification procedure was the same as in Ye, Bai, et al (2017).…”

Section: Chloroplast Dna Sequencing and Genetic Diversitymentioning

confidence: 99%

“…The TMRCA of the identified chlorotypes was estimated by secondary calibrations. The crown age of L. aggregata and the three outgroup taxa was estimated using four calibration points following the procedure described in Ye, Bai, et al (2017). We excluded one highly divergent chlorotype (H7, see Results) from this analysis as it is likely to originate from an ancient introgression.…”

Section: Tmrca Estimation and Demographic Historymentioning

confidence: 99%

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Differential Quaternary dynamics of evergreen broadleaved forests in subtropical China revealed by phylogeography of Lindera aggregata (Lauraceae)

Hampe

2019

Journal of Biogeography

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Aim According to palaeo‐biome reconstructions, the subtropical evergreen broadleaved forests (EBLF) in East Asia contracted to a narrow belt south of 24° N during the Last Glacial Maximum (LGM). Yet numerous phylogeographical studies of EBLF plants have inferred glacial refugia north of this area. Here, we aim to further elucidate the Quaternary dynamics of EBLFs using the widespread shrub Lindera aggregata as model. Location Subtropical China. Taxon Lindera aggregata (Sims) Kosterm (angiosperms). Methods Four chloroplast DNA (cpDNA) fragments and 15 low‐copy nuclear genes (LCGs) were sequenced in 19 populations. The time to the most recent common ancestor (TMRCA) was estimated using secondary calibrations. Bayesian algorithms were used to infer population clustering, phylogeny and divergence time. Historical gene flow was estimated using a maximum‐likelihood algorithm. Potential habitats at present and during the LGM were predicted using ecological niche modelling. Results The TMRCA estimate was 1.78 Myr. We observed a shallow cpDNA network organized around one dominant haplotype. The LCGs revealed three distinct genetic clusters that reflected contrasting historical population dynamics. The most ancient cluster was located south of the Nanling and Wuyi Mountains and indicated long‐term population persistence in multiple refugia. The area further north was occupied by two disjunct clusters that dated back to the LGM and showed signatures of a rapid northward expansion from two refugia. We detected noteworthy pollen‐mediated secondary admixture between all three clusters including somewhat preferential southward gene flow. Main conclusions Lindera aggregata represents a rare example of extensive post‐glacial range expansion across the EBLF biome (expansion‐contraction model) that contrasts with its generalized long‐term population stability in the southernmost range parts. Our findings also provide rare evidence for noteworthy post‐glacial gene flow into long‐term refugial populations. They correspond relatively well with palaeo‐biome reconstructions and support the hypothesis that the EBLF has undergone extensive post‐glacial community reshuffling.

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“…species, such as L. melissifolia (Walter) Blume (Echt et al., ), L. benzoin (L.) Blume (Edwards and Niesenbaum, ), and L. glauca (Siebold & Zucc.) Blume (Zhu et al., ), and these nSSRs have been used to investigate evolutionary histories of Lindera species (such as L. obtusiloba Blume [Ye et al., ]). However, no specific cpSSR primers have been developed in the Lindera genus.…”

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confidence: 99%

Development of 20 chloroplast microsatellite primers in wuyao (Lindera aggregata, Lauraceae)

2019

Appl Plant Sci

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Premise of the Study To investigate the population genetics and evolutionary history of wuyao ( Lindera aggregata , Lauraceae) and other Lindera species, polymorphic chloroplast microsatellite (cp SSR ) primers were developed. Methods and Results The complete chloroplast genome of L. glauca was used to design 74 primers for L. aggregata . Agarose gel electrophoresis and Sanger sequencing were used to select 20 polymorphic primers. These primers were then tested in 70 individuals from three populations of L. aggregata . The number of alleles ranged from two to four, and the unbiased haploid diversity index ranged from 0.457 to 0.685. Up to 17 primers successfully amplified in four other Lindera species: L. prattii , L. chunii , L. lungshengensis , and L. pulcherrima var. hemsleyana . Conclusions The 20 primers reported here can potentially be used for future genetic studies of L. aggregata and other Lindera species.

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Sharp genetic discontinuity in the aridity‐sensitive Lindera obtusiloba (Lauraceae): solid evidence supporting the Tertiary floral subdivision in East Asia

Cited by 40 publications

References 55 publications

Phylogeography and paleodistribution models of a widespread birch (Betula platyphylla Suk.) across East Asia: Multiple refugia, multidirectional expansion, and heterogeneous genetic pattern

Phylogeography and paleodistribution models of a widespread birch (Betula platyphylla Suk.) across East Asia: Multiple refugia, multidirectional expansion, and heterogeneous genetic pattern

Differential Quaternary dynamics of evergreen broadleaved forests in subtropical China revealed by phylogeography of Lindera aggregata (Lauraceae)

Development of 20 chloroplast microsatellite primers in wuyao (Lindera aggregata, Lauraceae)

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