Genetic variation of introduced red oak (Quercus rubra) stands in Germany compared to North American populations : научное издание

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1007/s10342-019-01256-5

Ключевые слова: CHLOROPLAST DNA VARIATION; MICROSATELLITE MARKERS; PHYLOGENETIC TREES; L.; INFERENCE; SELECTION; SOFTWARE; LOCI

Аннотация: Although Northern red oak (Quercus rubra L.) is the most important introduced deciduous tree species in Germany, only little is known about its genetic variation. For the first time, we describe patterns of neutral and potentially adaptive nuclear genetic variation in Northern red oak stands across Germany. For this purpose, 792 trees were genotyped including 611 trees from 12 stands in Germany of unknown origin and 181 trees from four populations within the natural distribution area in North America. Our marker set included 12 potentially adaptive (expressed sequence tag-derived simple sequence repeat = EST SSR) and 8 putatively selectively neutral nuclear microsatellite (nSSR) markers. Our results showed that German stands retain comparatively high levels of genetic variation at both EST-SSRs and nSSRs, but are more similar to each other than to North American populations. These findings are in agreement with earlier chloroplast DNA analyses which suggested that German populations originated from a limited geographic area in North America. The comparison between potentially adaptive and neutral microsatellite markers did not reveal differences in the analyzed diversity and differentiation measures for most markers. However, locus FIR013 was identified as a potential outlier locus. Due to the absence of signatures of selection in German stands, we suggest that introduced populations were established with material from provenances that were adapted to environmental conditions similar to those in Germany. However, we analyzed only a limited number of loci which are unlikely to be representative of adaptive genetic differences among German stands. Our results suggest that the apparent introduction from a limited geographic range in North America may go along with a reduced adaptive potential.

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Издание

Журнал: EUROPEAN JOURNAL OF FOREST RESEARCH

Выпуск журнала: Vol. 139, Is. 2

Номера страниц: 321-331

ISSN журнала: 16124669

Место издания: NEW YORK

Издатель: SPRINGER

Авторы

  • Pettenkofer Tim (Univ Gottingen, Fac Forest Sci & Forest Ecol Forest Genet & Fores, Busgenweg 2, D-37077 Gottingen, German)
  • Finkeldey Reiner (Univ Kassel, Monchebergstr 19, D-34125 Kassel, Germany)
  • Mueller Markus (Univ Gottingen, Fac Forest Sci & Forest Ecol Forest Genet & Fores, Busgenweg 2, D-37077 Gottingen, German)
  • Krutovsky Konstantin V. (Univ Gottingen, Fac Forest Sci & Forest Ecol Forest Genet & Fores, Busgenweg 2, D-37077 Gottingen, German; Siberian Fed Univ, Genome Res & Educ Ctr, Lab Forest Genom, Krasnoyarsk 660036, Russia; Russian Acad Sci, NI Vavilov Inst Gen Genet, Lab Populat Genet, Moscow 119333, Russia; Texas A&M Univ, Dept Ecosyst Sci & Management, 2138 TAMU, College Stn, TX 77843 USA)
  • Vornam Barbara (Univ Gottingen, Fac Forest Sci & Forest Ecol Forest Genet & Fores, Busgenweg 2, D-37077 Gottingen, German)
  • Leinemann Ludger (Univ Gottingen, Fac Forest Sci & Forest Ecol Forest Genet & Fores, Busgenweg 2, D-37077 Gottingen, German)
  • Gailing Oliver (Univ Gottingen, Fac Forest Sci & Forest Ecol Forest Genet & Fores, Busgenweg 2, D-37077 Gottingen, German; Michigan Technol Univ, Sch Forest Resources & Environm Sci, Houghton, MI 49931 USA; Univ Gottingen, Ctr Integrated Breeding Res CiBreed, D-37075 Gottingen, Germany)

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