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Zhang Z, Li J, Suddee S, Bouamanivong S, Averyanov LV, Gale SW. Exploring island syndromes: Variable matrix permeability in Phalaenopsis pulcherrima (Orchidaceae), a specialist lithophyte of tropical Asian inselbergs. Front Plant Sci 2023; 14:1097113. [PMID: 36890904 PMCID: PMC9986494 DOI: 10.3389/fpls.2023.1097113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION Plants confined to island-like habitats are hypothesised to possess a suite of functional traits that promote on-spot persistence and recruitment, but this may come at the cost of broad-based colonising potential. Ecological functions that define this island syndrome are expected to generate a characteristic genetic signature. Here we examine genetic structuring in the orchid Phalaenopsis pulcherrima, a specialist lithophyte of tropical Asian inselbergs, both at the scale of individual outcrops and across much of its range in Indochina and on Hainan Island, to infer patterns of gene flow in the context of an exploration of island syndrome traits. METHODS We sampled 323 individuals occurring in 20 populations on 15 widely scattered inselbergs, and quantified genetic diversity, isolation-by-distance and genetic structuring using 14 microsatellite markers. To incorporate a temporal dimension, we inferred historical demography and estimated direction of gene flow using Bayesian approaches. RESULTS We uncovered high genotypic diversity, high heterozygosity and low rates of inbreeding, as well as strong evidence for the occurrence of two genetic clusters, one comprising the populations of Hainan Island and the other those of mainland Indochina. Connectivity was greater within, rather than between the two clusters, with the former unequivocally supported as ancestral. DISCUSSION Despite a strong capacity for on-spot persistence conferred by clonality, incomplete self-sterility and an ability to utilize multiple magnet species for pollination, our data reveal that P. pulcherrima also possesses traits that promote landscape-scale gene flow, including deceptive pollination and wind-borne seed dispersal, generating an ecological profile that neither fully conforms to, nor fully contradicts, a putative island syndrome. A terrestrial matrix is shown to be significantly more permeable than open water, with the direction of historic gene flow indicating that island populations can serve as refugia for postglacial colonisation of continental landmasses by effective dispersers.
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Affiliation(s)
- Zhe Zhang
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants (Hainan University), Ministry of Education, College of Forestry, Hainan University, Haikou, China
- Key Laboratory of Germplasm Resources of Tropical Special Ornamental Plants of Hainan Province, College of Forestry, Hainan University, Haikou, China
| | - Jihong Li
- Flora Conservation Department, Kadoorie Farm & Botanic Garden, Tai Po, Hong Kong, China
| | - Somran Suddee
- Forest Herbarium, Department of National Parks, Wildlife and Plant Conservation, Chatuchak, Bangkok, Thailand
| | - Somsanith Bouamanivong
- Biotechnology and Ecology Institute, Ministry of Science and Technology, Vientiane, Laos
| | - Leonid V. Averyanov
- Komarov Botanical Institute, Russian Academy of Sciences, St. Petersburg, Russia
| | - Stephan W. Gale
- Flora Conservation Department, Kadoorie Farm & Botanic Garden, Tai Po, Hong Kong, China
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Lira MGS, Berbel-Filho WM, Espírito-Santo HMV, Tatarenkov A, Avise JC, de Leaniz CG, Consuegra S, Lima SMQ. Filling the gaps: phylogeography of the self-fertilizing Kryptolebias species (Cyprinodontiformes: Rivulidae) along South American mangroves. J Fish Biol 2021; 99:644-655. [PMID: 33846974 DOI: 10.1111/jfb.14753] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/07/2021] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
Mangrove killifishes of the genus Kryptolebias have been historically classified as rare because of their small size and cryptic nature. Major gaps in distribution knowledge across mangrove areas, particularly in South America, challenge the understanding of the taxonomic status, biogeographical patterns and genetic structuring of the lineages composing the self-fertilizing "Kryptolebias marmoratus species complex." In this study, the authors combined a literature survey, fieldwork and molecular data to fill major gaps of information about the distribution of mangrove killifishes across western Atlantic mangroves. They found that selfing mangrove killifishes are ubiquitously distributed across the Caribbean, Central and South American mangroves and report 14 new locations in South America, extending the range of both the "Central clade" and "Southern clade" lineages which overlap in the Amazon. Although substantial genetic differences were found between clades, the authors also found further genetic structuring within clades, with populations in Central America, north and northeast Brazil generally showing higher levels of genetic diversity compared to the clonal ones in southeast Brazil. The authors discuss the taxonomic status and update the geographical distribution of the Central and Southern clades, as well as potential dispersal routes and biogeographical barriers influencing the distribution of the selfing mangrove killifishes in the western Atlantic mangroves.
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Affiliation(s)
- Mateus G S Lira
- Laboratório de Ictiologia Sistemática e Evolutiva, Departamento de Botânica e Zoologia, Universidade Federal do Rio Grande, Programa de Pós-Graduação em Sistemática e Evolução, Natal, Brazil
| | | | | | - Andrei Tatarenkov
- Department of Ecology and Evolutionary Biology, University of California, Irvine, California, USA
| | - John C Avise
- Department of Ecology and Evolutionary Biology, University of California, Irvine, California, USA
| | | | - Sofia Consuegra
- Department of Biosciences, College of Science, Swansea University, Swansea, UK
| | - Sergio M Q Lima
- Laboratório de Ictiologia Sistemática e Evolutiva, Departamento de Botânica e Zoologia, Universidade Federal do Rio Grande, Programa de Pós-Graduação em Sistemática e Evolução, Natal, Brazil
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Stanisic LJ, Aleksic JM, Dimitrijevic V, Simeunovic P, Glavinic U, Stevanovic J, Stanimirovic Z. New insights into the origin and the genetic status of the Balkan donkey from Serbia. Anim Genet 2017; 48:580-590. [PMID: 28815638 DOI: 10.1111/age.12589] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/15/2017] [Indexed: 11/30/2022]
Abstract
The Balkan donkey (Equus asinus L.) is commonly regarded as a large-sized, unselected, unstructured and traditionally managed donkey breed. We assessed the current genetic status of the three largest E. asinus populations in the central Balkans (Serbia) by analysing the variability of nuclear microsatellites and the mitochondrial (mtDNA) control region of 77 and 49 individuals respectively. We further analysed our mtDNA dataset along with 209 published mtDNA sequences of ancient and modern individuals from 19 European and African populations to provide new insights into the origin and the history of the Balkan donkey. Serbian donkey populations are highly genetically diverse at both the nuclear and mtDNA levels despite severe population decline. Traditional Balkan donkeys in Serbia are rather heterogeneous; we found two groups of individuals with similar phenotypic features, somewhat distinct nuclear backgrounds and different proportions of mtDNA haplotypes belonging to matrilineal Clades 1 and 2. Another group, characterized by larger body size, different coat colour, distinct nuclear gene pool and predominantly Clade 2 haplotypes, was delineated as the Banat donkey breed. The maternal landscape of the large Balkan donkey population is highly heterogeneous and more complex than previously thought. Given the two independent domestication events in donkeys, multiple waves of introductions into the Balkans from Greece are hypothesized. Clade 2 donkeys probably appeared in Greece prior to those belonging to Clade 1, whereas expansion and diversification of Clade 1 donkeys within the Balkans predated that of Clade 2 donkeys.
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Affiliation(s)
- L J Stanisic
- Department of Reproduction, Fertility and Artificial Insemination, Faculty of Veterinary Medicine, University of Belgrade, Bul. oslobodjenja 18, PO Box 310, 11000, Belgrade, Serbia
| | - J M Aleksic
- Institute of Molecular Genetics and Genetic Engineering (IMGGE), University of Belgrade, Vojvode Stepe 444a, PO Box 23, 11010, Belgrade, Serbia
| | - V Dimitrijevic
- Department of Animal Breeding and Genetics, Faculty of Veterinary Medicine, University of Belgrade, Bul. oslobodjenja 18, PO Box 310, 11000, Belgrade, Serbia
| | - P Simeunovic
- Department of Farm Animal Diseases, Faculty of Veterinary Medicine, University of Belgrade, Bul. oslobodjenja 18, PO Box 310, 11000, Belgrade, Serbia
| | - U Glavinic
- Department of Reproduction, Fertility and Artificial Insemination, Faculty of Veterinary Medicine, University of Belgrade, Bul. oslobodjenja 18, PO Box 310, 11000, Belgrade, Serbia
| | - J Stevanovic
- Department of Reproduction, Fertility and Artificial Insemination, Faculty of Veterinary Medicine, University of Belgrade, Bul. oslobodjenja 18, PO Box 310, 11000, Belgrade, Serbia
| | - Z Stanimirovic
- Department of Reproduction, Fertility and Artificial Insemination, Faculty of Veterinary Medicine, University of Belgrade, Bul. oslobodjenja 18, PO Box 310, 11000, Belgrade, Serbia
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Langille BL, Perry R, Keefe D, Barker O, Marshall HD. Mitochondrial population structure and post-glacial dispersal of longnose sucker Catostomus catostomus in Labrador, Canada: evidence for multiple refugial origins and limited ongoing gene flow. J Fish Biol 2016; 89:1378-1392. [PMID: 27350593 DOI: 10.1111/jfb.13042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 04/27/2016] [Indexed: 06/06/2023]
Abstract
Two hundred and eighty-seven longnose sucker Catostomus catostomus were collected from 14 lakes in Labrador, 52 from three lakes in Ontario, 43 from two lakes in British Columbia and 32 from a lake in Yukon; a total of 414 in all. The resulting 34 haplotypes (20 in Labrador) contained moderate haplotypic diversity (h = 0·657) and relatively low nucleotide diversity (π = 3·730 × 10(-3) . Mean ϕST (0·453, P < 0·05) over all populations revealed distinct genetic structuring among C. catostomus populations across Canada, based on province, which was validated by the analysis and spatial analysis of molecular variance (c. 80% variation between provinces). These results probably reflect the historical imprint of recolonization from different refugia and possibly indicate limited ongoing gene flow within provinces. A haplotype network revealed one major and two minor clades within Labrador that were assigned to the Atlantic, Beringian and Mississippian refugia, respectively, with tests of neutrality and mismatch distribution indicative of a recent population expansion in Labrador, dated between c. 3500 and 8300 years ago.
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Affiliation(s)
- B L Langille
- Department of Biology, Memorial University of Newfoundland, St John's, Newfoundland and Labrador, A1B 3X9, Canada
| | - R Perry
- Department of Environment and Conservation, Wildlife Division, Corner Brook, 117 Riverside Drive, P.O Box 2007, NL, A2H 7S1, Canada
| | - D Keefe
- Department of Environment and Conservation, Wildlife Division, Corner Brook, 117 Riverside Drive, P.O Box 2007, NL, A2H 7S1, Canada
| | - O Barker
- Department of Environment and Conservation, Wildlife Division, 10 Burns Road, Whitehorse, YK, Y1A 4Y9, Canada
| | - H D Marshall
- Department of Biology, Memorial University of Newfoundland, St John's, Newfoundland and Labrador, A1B 3X9, Canada
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