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Phylogeography of the highly invasive sugar beet nematode, Heterodera schachtii (Schmidt, 1871), based on microsatellites

Title
Phylogeography of the highly invasive sugar beet nematode, Heterodera schachtii (Schmidt, 1871), based on microsatellites
Authors
Kim J.Ni G.Kim T.Chun J.-Y.Kern E.M.A.Park J.-K.
Ewha Authors
박중기Gang Ni
SCOPUS Author ID
박중기scopus
Issue Date
2019
Journal Title
Evolutionary Applications
ISSN
1752-4563JCR Link
Citation
Evolutionary Applications vol. 12, no. 2, pp. 324 - 336
Keywords
approximate Bayesian computationcryptic lineagecyst nematodeghost populationinvasion genetics
Publisher
Wiley-Blackwell
Indexed
SCOPUS WOS scopus
Document Type
Article
Abstract
Plant-parasitic nematodes (PPNs) threaten crop production worldwide. Yet few studies have examined their intraspecific genetic diversity or patterns of invasion, critical data for managing the spread of these cryptic pests. The sugar beet nematode Heterodera schachtii, a global invader that parasitizes over 200 plant species, represents a model for addressing important questions about the invasion genetics of PPNs. Here, a phylogeographic study using 15 microsatellite markers was conducted on 231 H. schachtii individuals sampled from four continents, and invasion history was reconstructed through an approximate Bayesian computation approach, with emphasis on the origin of newly discovered populations in Korea. Multiple analyses confirmed the existence of cryptic lineages within this species, with the Korean populations comprising one group (group 1) and the populations from Europe, Australia, North America, and western Asia comprising another (group 2). No multilocus genotypes were shared between the two groups, and large genetic distance was inferred between them. Population subdivision was also revealed among the populations of group 2 in both population comparison and STRUCTURE analyses, mostly due to different divergent times between invasive and source populations. The Korean populations showed substantial genetic homogeneity and likely originated from a single invasion event. However, none of the other studied populations were implicated as the source. Further studies with additional populations are needed to better describe the distribution of the potential source population for the East Asian lineage. © 2018 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd
DOI
10.1111/eva.12719
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일반대학원 > 에코과학부 > Journal papers
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