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Low genetic diversity despite multiple introductions of the invasive plant species Impatiens glandulifera in Europe

Hagenblad, Jenny and Brunet, Jörg and Graae, Bente Jessen (2015). Low genetic diversity despite multiple introductions of the invasive plant species Impatiens glandulifera in Europe. BMC genetics. 16, 1-16
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Official URL: http://dx.doi.org/10.1186/s12863-015-0242-8

Abstract

Background: Invasive species can be a major threat to native biodiversity and the number of invasive plant species is increasing across the globe. Population genetic studies of invasive species can provide key insights into their invasion history and ensuing evolution, but also for their control. Here we genetically characterise populations of Impatiens glandulifera, an invasive plant in Europe that can have a major impact on native plant communities. We compared populations from the species' native range in Kashmir, India, to those in its invaded range, along a latitudinal gradient in Europe. For comparison, the results from 39 other studies of genetic diversity in invasive species were collated.Results: Our results suggest that I. glandulifera was established in the wild in Europe at least twice, from an area outside of our Kashmir study area. Our results further revealed that the genetic diversity in invasive populations of I. glandulifera is unusually low compared to native populations, in particular when compared to other invasive species. Genetic drift rather than mutation seems to have played a role in differentiating populations in Europe. We find evidence of limitations to local gene flow after introduction to Europe, but somewhat less restrictions in the native range. I. glandulifera populations with significant inbreeding were only found in the species' native range and invasive species in general showed no increase in inbreeding upon leaving their native ranges. In Europe we detect cases of migration between distantly located populations. Human activities therefore seem to, at least partially, have facilitated not only introductions, but also further spread of I. glandulifera across Europe.Conclusions: Although multiple introductions will facilitate the retention of genetic diversity in invasive ranges, widespread invasive species can remain genetically relatively invariant also after multiple introductions. Phenotypic plasticity may therefore be an important component of the successful spread of Impatiens glandulifera across Europe.

Authors/Creators:Hagenblad, Jenny and Brunet, Jörg and Graae, Bente Jessen
Title:Low genetic diversity despite multiple introductions of the invasive plant species Impatiens glandulifera in Europe
Series/Journal:BMC genetics (BIB10381382)
Year of publishing :2015
Depositing date:20 January 2015
Volume:16
Page range:1-16
Number of Pages:16
Publisher:BioMed Central Ltd
ISSN:1471-2156
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:F Plant production > F30 Plant genetics and breeding
H Protection of plants and stored products > H60 Weeds and weed control
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Genetics (medical genetics to be 30107 and agricultural genetics to be 40402)
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Botany
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Evolutionary Biology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Agrovoc terms:invasive species, genetic variation, introduced species
Keywords:SSRs, Colonisation events, Exotic species, Molecular diversity, Weeds
URN:NBN:urn:nbn:se:slu:epsilon-e-3181
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3181
Additional ID:
Type of IDID
Web of Science (WoS)000359699200001
DOI10.1186/s12863-015-0242-8
ID Code:12966
Faculty:S - Faculty of Forest Sciences
Department:(S) > Southern Swedish Forest Research Centre
Deposited By: SLUpub Connector
Deposited On:20 Jan 2016 14:19
Metadata Last Modified:06 Feb 2016 23:56

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