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Phylogeographic surveys and apomictic genetic connectivity in the North Atlantic red seaweed Mastocarpus stellatus
Li, Jing-Jing1,2,3; Hu, Zi-Min1,2; Liu, Ruo-Yu1,3; Zhang, Jie1,3; Liu, Shao-Lun4; Duan, De-Lin1,2
2016
Source PublicationMOLECULAR PHYLOGENETICS AND EVOLUTION
Volume94Issue:2016Pages:463-472
SubtypeArticle
AbstractThe North Atlantic red alga Mastocaipus stellatus is characterized by two life histories (sexual-type and direct-type), which correspond to two geographically isolated breeding groups. These features enable M. stellatus to be an interesting model to investigate how environmental shift and apomictic propagation have influenced its population genetic structure, historical demography and distribution dynamic. To test these ideas, we obtained 456 specimens from 15 locations on both sides of the North Atlantic and sequenced portion of the nuclear internal transcribed spacer (ITS), mitochondria] cox2-3 region (COX) and plastid RuBisCo spacer (RLS). Median-joining networks and ML trees inferred from COX and RLS consistently revealed two gene lineages (mtDNA: C-N, C-S; cpDNA: R-N, R-S). The concatenated COX and RLS markers yielded three cytotypes: a northern C-N-R-N, a southern C-S-R-S and a mixed cytotype C-S-R-N, which enabled us to roughly separate samples into D (direct-type life-cycle) and S (sexual-type life-cycle) groups (northern CN-RN and mixed cytotype C-S-R-N = D; southern C-S-R-S = S). Pairwise F-ST analysis of the D group revealed a high level of genetic differentiation both along European coasts and across the Atlantic basin. Bayesian skyline plots (BSPs) and IMa analyses indicated that M. stellatus underwent slight demographic expansion at the late-Pleistocene, with the beginning of divergence between lineages dating to c. 0.189 Ma (95%HPD: 0.083-0.385 Ma). IMa analyses also revealed asymmetric genetic exchange among European populations and a predominant postglacial trans-Atlantic migration from Norway and Galway Bay to North America. Our study highlights the importance of phylogeographic approaches to discover the imprints of climate change, life histories and gene flow in driving population genetic connectivity and biogeographic distribution of intertidal seaweeds in the North Atlantic. (C) 2015 Elsevier Inc. All rights reserved.
KeywordApomictic Propagation Demographic History Gene Flow Mastocarpus Stellatus Palaeoclimatic Oscillation Population Genetic Structure
DOI10.1016/j.ympev.2015.10.029
Indexed BySCI
Language英语
WOS IDWOS:000366443300001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/86612
Collection实验海洋生物学重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266071, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
4.Tunghai Univ, Dept Life Sci, Taichung 40704, Taiwan
First Author AffilicationKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences
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Li, Jing-Jing,Hu, Zi-Min,Liu, Ruo-Yu,et al. Phylogeographic surveys and apomictic genetic connectivity in the North Atlantic red seaweed Mastocarpus stellatus[J]. MOLECULAR PHYLOGENETICS AND EVOLUTION,2016,94(2016):463-472.
APA Li, Jing-Jing,Hu, Zi-Min,Liu, Ruo-Yu,Zhang, Jie,Liu, Shao-Lun,&Duan, De-Lin.(2016).Phylogeographic surveys and apomictic genetic connectivity in the North Atlantic red seaweed Mastocarpus stellatus.MOLECULAR PHYLOGENETICS AND EVOLUTION,94(2016),463-472.
MLA Li, Jing-Jing,et al."Phylogeographic surveys and apomictic genetic connectivity in the North Atlantic red seaweed Mastocarpus stellatus".MOLECULAR PHYLOGENETICS AND EVOLUTION 94.2016(2016):463-472.
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