Population genetic structure of N. American and European Phalaris arundinacea L. as inferred from inter-simple sequence repeat markers

Nelson, Michael F.; Anderson, Neil O.; Casler, Michael D.; Jakubowski, Andrew R.

doi:10.1007/s10530-013-0525-9

Cited by 31 publications

(57 citation statements)

References 40 publications

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“…Selected populations were represented by up to dozen individual trees, individuals were selected randomly and all individuals were recorded. The sample size of approximately 20 individuals per populations adequately represents the population, and even exceeds the size of the analysed set of individuals used in studies where ISSR markers were used (López-Aljorna et al 2007;Cox et al 2012;Nelson et al 2014).…”

Section: Methodsmentioning

confidence: 99%

Assessment of genetic variability in autochthonous elm populations using ISSR markers

et al. 2014

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ABSTRACT:Genetic diversity between 110 individuals from 6 elm populations (Ulmus minor, U. glabra and U. laevis) was determined using ISSR markers. Altogether 73 ISSR markers were evaluated with the average rate of polymorphic bands of 99.1%, which indicates high genetic diversity between the populations/species. The higher genetic diversity was revealed particularly in the population of U. glabra and this result was supported by the analysis of genetic diversity and differentiation of elm populations. Molecular analyses of ISSR markers allowed to assess the extent of genetic variability of native elm populations and characterize the levels of their genetic diversity and differentiation. Their further use can be seen in conservation and management activities.

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Section: Methodsmentioning

confidence: 99%

Assessment of genetic variability in autochthonous elm populations using ISSR markers

et al. 2014

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“…[31]; these have been used in our subsequent studies for Phalaris [18,30,43]. Seventy-six markers (MW = 270-1200 base pairs [bp]) were scored and transformed into a binary character matrix (1 = present, 0 = absent).…”

Section: Dna Extraction and Issr Analysesmentioning

confidence: 99%

“…STRUCTURE groupings refer to relationship paterns. After ploting, the K = 2 grouping had the necessary decrease in slope and increase in variance, diagnostic of the true K value, with the greatest number of genotypes/grouping; all other groupings were eliminated [30]. Only results from the K = 2 grouping will be shown.…”

Section: Statistical Analysesmentioning

confidence: 99%

“…Three forage cultivars ('Palaton', 'Vantage', 'Venture') responded to selection for establishment capacity with annual weeds [16]. Invasive genotypes possess wide genotype × environment (G×E) interactions across environments for emergence, tiller production, leaf number and biomass, indicating a lack of stability and wide genetic variation [28][29][30]. Recent molecular studies have shown that central European (Czech) wild populations were genetically similar to the forage 'Chrastava' while difering signiicantly from ornamental cultivars [18].…”

Section: Introductionmentioning

confidence: 99%

“…Recent molecular genetic analyses of herbarium specimens have conirmed the existence of native N. American populations across the continent [38][39][40]. Nelson et al [30] determined that the population genetic structure of wild, forage, and ornamental exotic and N. American Phalaris harbored a high amount of genetic diversity within, as opposed to among, populations. Thus, range expansion of P. arundinacea in N. America is not a result of hybridization among exotic, forage, and native genotypes [38] despite previous theories [28].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Genetic Variability of US and Czech Phalaris Arundinacea L. Wild and Cultivated Populations

Kávová¹,

Kubátová²,

Čurn³

et al. 2018

New Perspectives in Forage Crops

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The spread of invasive plant species in natural habitats has become a worldwide problem with negative impacts. Phalaris arundinacea, an important forage and ornamental crop, is widespread worldwide. In recent years there has been a massive spread of P. arundinacea across North America and Canada. Production of Phalaris seed as a forage crop occurs in northern Minnesota; seeds are sold throughout the world, particularly in central Europe. We tested genetic similarities and diferences between populations in the US (Minnesota) and the Czech Republic using ISSRs to determine potential gene low for this forage crop.The cultivated forage and wild genotypes were dispersed into two groups that overlapped. At least four sets of wild US genotypes are dissimilar to European counterparts and potentially native to N. America. Future work to prove the ancestry of each accession will be necessary. Nonetheless, the sale of forage cultivars related to or derived from European types causes genetic mixing with N. American types. Part of this intercontinental gene low is exacerbated by the production of Phalaris forage seed in Minnesota. The implications of these indings for management of invasive crops native to both continents are signiicant for forage producers, managers, and breeders.

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How many marker loci are necessary? Analysis of dominant marker data sets using two popular population genetic algorithms

Nelson

Anderson

2013

Ecology and Evolution

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The number of marker loci required to answer a given research question satisfactorily is especially important for dominant markers since they have a lower information content than co-dominant marker systems. In this study, we used simulated dominant marker data sets to determine the number of dominant marker loci needed to obtain satisfactory results from two popular population genetic analyses: STRUCTURE and AMOVA (analysis of molecular variance). Factors such as migration, level of population differentiation, and unequal sampling were varied in the data sets to mirror a range of realistic research scenarios. AMOVA performed well under all scenarios with a modest quantity of markers while STRUCTURE required a greater number, especially when populations were closely related. The popular ΔK method of determining the number of genetically distinct groups worked well when sampling was balanced, but underestimated the true number of groups with unbalanced sampling. These results provide a window through which to interpret previous work with dominant markers and we provide a protocol for determining the number of markers needed for future dominant marker studies.

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Population genetic structure of N. American and European Phalaris arundinacea L. as inferred from inter-simple sequence repeat markers

Cited by 31 publications

References 40 publications

Assessment of genetic variability in autochthonous elm populations using ISSR markers

Assessment of genetic variability in autochthonous elm populations using ISSR markers

Genetic Variability of US and Czech Phalaris Arundinacea L. Wild and Cultivated Populations

How many marker loci are necessary? Analysis of dominant marker data sets using two popular population genetic algorithms

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