Circular genetic structure of the Abies nephrolepis species complex shaped by the circular landform of Northeast Asia

被引:0
作者
Kwak, Myounghai [1 ]
Nakamura, Koh [2 ]
Xiang, Qiaoping [3 ]
Wen, Jun [4 ]
Lee, Eun Sil [1 ]
Hong, Jaram [5 ]
Kovtonyuk, Nataliya [6 ]
Kryukova, Maria [7 ]
Korchagina, Olga [8 ]
Koo, Kyung Ah [9 ]
Iwaizumi, Masakazu G. [10 ]
Lee, Byoung Yoon [1 ]
Kokubugata, Goro [11 ]
Zhang, Xianchun [3 ]
Lebedev, Dmitry [8 ]
机构
[1] Natl Inst Biol Resources, Incheon 22689, South Korea
[2] Hokkaido Univ, Field Sci Ctr Northern Biosphere, Bot Garden, Sapporo, Japan
[3] Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing, Peoples R China
[4] Smithsonian Inst, Dept Bot, Natl Museum Nat Hist, MRC 166, Washington, DC USA
[5] Korea Univ, Div Life Sci, Seoul, South Korea
[6] Cent Siberian Bot Garden SB RAS, Novosibirsk, Russia
[7] Inst Water & Ecol Problems FEB RAS, Khabarovsk, Russia
[8] Inst FEB RAS, Sakhalin Branch Bot Garden, Yuzhno Sakhalinsk, Russia
[9] Korea Environm Inst, Sejong Si, South Korea
[10] Forestry & Forest Prod Res Inst, Forest Tree Breeding Ctr, Kansai Reg Breeding Off, Okayama, Japan
[11] Natl Museum Nat & Sci, Dept Bot, Tsukuba, Ibaraki, Japan
关键词
Abies nephrolepis species complex; circular overlap; cytoplasmic introgression; hybridization; MIG-seq; Northeast Asia; single nucleotide polymorphism; LAST GLACIAL MAXIMUM; MOLECULAR PHYLOGEOGRAPHY; RETICULATE EVOLUTION; CLIMATE-CHANGE; GENUS ABIES; POPULATION-STRUCTURE; QUATERNARY CLIMATE; MITOCHONDRIAL-DNA; PICEA-JEZOENSIS; HYBRIDIZATION;
D O I
10.1111/jbi.14841
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Aim: Pinaceae have been noted for their tendency towards reticulation as a result of interspecific hybridization. Here, we demonstrated the phylogeographic dynamics of the native Northeast Asian sub-alpine conifer, Abies nephrolepis species complex (ANSC), evolving in circular overlaps along the Northeast Asian landform, which functions as a corridor with the sea, thus acting as a geographic barrier. Location: Northeast Asia: the Korean Peninsula, Japanese Archipelago, Russian Far East and northeastern China. Taxon: Abies nephrolepis species complex (Family Pinaceae, Genus Abies, Section Balsamea, Abies nephrolepis, A. koreana, A. veitchii and A. sachalinensis). Methods: A total of 728 individuals from 38 ANSC populations were analysed using multiplexed inter-simple sequence repeat genotyping by sequencing to capture variations in biparental nuclear genomes. Eight mitochondrial regions and eight chloroplast regions of each individual were sequenced using the MiSeq platform and Sanger sequencing. Species distribution models were generated. Results: Bayesian clustering with 507 nuclear single nucleotide polymorphisms and the discrepancy between cytoplasmic and nuclear genome lineages implied contemporary and ancient connections between neighbouring species in the form of circular overlap. This genetic connectivity was supported by principal component analysis. Strong correlations between genetic distance and geographic distance were observed, suggesting that gene flow occurs through a continuous chain around the sea. We also found that gene flow direction and intensity changed over time, with support from palaeodistribution modelling. Conclusion: Past hybridization events were captured in cytoplasmic genomes, generating heterogeneity across maternal ancestries. This intensive phylogeographic study demonstrates speciation with incomplete reproductive isolation (continuous gene flow) among neighbouring species with an alteration of the direction and intensity of gene flow due to climate change. The divergence of ANSC due to repeated isolation and reconnection caused by heterogenous physiological environments and climate fluctuation provides a model to solve evolutionary scenarios for reticulate evolution in Pinaceae and other plants.
引用
收藏
页码:1533 / 1548
页数:16
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