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Variation in populations of the coastal dune building grassLeymus arenarius in Iceland revealed by endospermal prolamins

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Abstract

Variation in the endospermal protein patterns of seeds amongst and between inland and coastal populations of the dune building grassLeymus arenarius was examined in Iceland. Seeds were collected from six coastal populations and five inland populations in Iceland. Endospermal proteins (prolamins) of seeds were extracted with Tris-buffered 2-propanol (50%) and β-mercaptoethanol (0.5% v/v). We used 8% and 12% sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) to separate the prolamin protein bands, which were stained with Coomassie Brilliant Blue R. Coastal populations were differentiated from inland populations on the basis of high frequency of high molar weight (HMW) (110–150 kg mol−1) prolamins. Coastal populations had significantly higher proportions of their seed with more than two HMW prolamins, than those of inland populations. Subtle differences were found among the HMW prolamins of coastal and inland populations indicating limited intrapopulation variation. The dynamic environment of sand dunes probably influences the genetic composition of these populations. The results suggest that seeds of the inland and coastal populations should be treated separately in sand dune reclamation and restoration works

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Authors and Affiliations

  1. Department of Biological and Environmental Sciences, Troy University, 36082, Troy, AL, USA

    Greipsson S.

  2. Department of Biology, Georgia State University, 24 Peachtree Center Ave., 30303, Atlanta, GA, USA

    El-Mayas H.

  3. Plant Breeding Biotechnology, Agrifood Research Finland, FIN-31600, Jokioinen, Finland

    Ahokas H.

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  1. Greipsson S.
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  2. El-Mayas H.
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  3. Ahokas H.
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Correspondence to Greipsson S..

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Greipsson, S., El-Mayas, H. & Ahokas, H. Variation in populations of the coastal dune building grassLeymus arenarius in Iceland revealed by endospermal prolamins. J Coast Conserv 10, 101–108 (2004). https://doi.org/10.1652/1400-0350(2004)010[0101:VIPOTC]2.0.CO;2

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  • DOI: https://doi.org/10.1652/1400-0350(2004)010[0101:VIPOTC]2.0.CO;2

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