Morphological and genetic variation within and among four Quercus petraea and Q. robur natural populations

Yücedağ, Cengiz

doi:10.3906/bot-1205-18

Cited by 18 publications

(22 citation statements)

References 42 publications

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“…In Turkey, both Q. robur and Q. petraea occur in similar semi-humid to arid climates (Ugurlu et al, 2012), suggesting different local adaptations of these species in Turkey compared to the European species distribution range. Based on the precipitation effectiveness index (Erinç, 1965), Yücedağ & Gailing (2013) reported that Q. petraea populations were located in semi-humid conditions and Q. robur populations in semi-arid to arid climates. Likewise, Eaton et al (2016) pointed out that these oak species show phenotypic differences in conditions far from their optimum.…”

Section: Introductionmentioning

confidence: 99%

“…Up to now, no studies have been performed on the variation of stomatal density and associations with leaf morphological characters in natural populations of Q. petraea and Q. robur in Turkey. The goals of the present study are (1) to assess differences in stomatal densities between species and between populations within species for two populations of Q. robur and two populations of Q. petraea in northwestern Turkey, (2) to analyze associations of stomatal density with seven leaf morphological characters obtained from a previous study (Yücedağ & Gailing, 2013), and (3) to calculate Phenotypic Trait Differentiation (P ST ) between species and between populations within species for stomatal density and seven leaf morphological characters.…”

Section: Introductionmentioning

confidence: 99%

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Stomatal density in Quercus petraea and Q. robur natural populations in Northern Turkey

Yücedağ¹,

Sanders²,

Musah³

et al. 2019

Dendrobiology

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This study examined variation of stomatal density in two populations of Quercus petraea (Matt.) Liebl. and two populations of Q. robur L. from northwestern Turkey. Stomatal density was determined in fully expanded and dried leaf samples that were collected from trees under natural conditions. Stomatal densities of Q. petraea and Q. robur varied from 186 to 459 per mm 2 (mean value: 333 stomata per mm 2 ) and from 397 to 826 per mm 2 (mean value: 517 stomata per mm 2 ), respectively. Significant differences in stomatal density were found between these two oak species in Turkey as well as between populations within species. Strong and significant negative correlations were observed between stomatal density and leaf length within each species and across the species. While in Central Europe Q. petraea occurs in drier environments than Q. robur, in the present study Q. robur populations grow in more arid environments and have smaller leaves and a higher stomatal density than Q. petraea. Stomatal density had negative correlations with each of the other leaf characters apart from sinus width. In addition, the interspecific P ST value (0.48) for stomatal density was relatively high compared to the mean genetic differentiation calculated at eight microsatellite loci (F ST = 0.030), suggesting different local adaptations of populations. Further studies that include additional populations will be necessary to associate genetic variation at candidate genes with phenotypic and environmental variation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stomatal density in Quercus petraea and Q. robur natural populations in Northern Turkey

Yücedağ¹,

Sanders²,

Musah³

et al. 2019

Dendrobiology

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“…Even leaf morphological traits that are frequently used for species identifi cation show a large variability within species and overlapping frequency distributions among species making the distinction of closely related species at single characters diffi cult. However, multivariate analyses using a set of morphometric, numeric and observed leaf characters in sympatric populations can often be used to differentiate between closely related species with some overlap in the phenotypic extremes (Jensen et al 1993, Curtu et al 2007a, Viscosi et al 2012, Yucedag & Gailing 2013. Putative hybrids have been described based on morphological characters (Jensen et al 1993, Rushton 1993 and/or genetic assignment analyses using discriminating genetic markers (e.g.…”

Section: Introductionmentioning

confidence: 99%

Interspecific gene flow and maintenance of species integrity in oaks

Gailing

Curtu

2014

Ann. For. Res.

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Abstract. Oak species show a wide variation in morphological and physiological characters, and boundaries between closely related species are often not clear-cut. Still, despite frequent interspecific gene flow, oaks maintain distinct morphological and physiological adaptations. In sympatric stands, spatial distribution of species with different ecological requirements is not random but constrained by soil and other micro-environmental factors. Here, we discuss factors that may influence the maintenance of the integrity of oak species in the face of interspecific gene flow. Pre-zygotic isolation (e.g. cross incompatibilities, asynchrony in flowering, pollen competition) and post-zygotic isolation (divergent selection) contribute to the maintenance of species integrity in sympatric oak stands. The antagonistic effects of interspecific gene flow and divergent selection are reflected in the low genetic differentiation between hybridizing oak species at most genomic regions interspersed by regions with signatures of divergent selection (outlier regions). In the near future, the availability of high-density genetic linkage maps anchored to scaffolds of a sequenced Q. robur genome will allow to characterize the underlying genes in these outlier regions and their putative role in reproductive isolation between species. Reciprocal transplant experiments of seedlings between parental environments can be used to characterize selection on outlier genes. High transferability of gene-based markers will enable comparative outlier screens in different oak species.

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“…E-Mail: celine.blanc-jolivet@thuenen.de many studies, but with some asymmetry due to stronger interspecific sexual barriers in Q. petraea (CHYBICKI and BURCZYK, 2013;CURTU et al, 2007a;GERBER et al, 2014;LAGACHE et al, , 2014LEPAIS and GERBER, 2011), although signals of past asymmetric introgression toward Q. petraea could be observed at loci with high interspecific differentiation (GUI-CHOUX et al, 2013). Furthermore, both species seem to actively diverge from each other (GOICOECHEA et al, 2012), which probably results in successful morphological and genetic identification of pure and hybrid individuals (CHYBICKI et al, 2010;CURTU et al, 2007a, b;FORTINI et al, 2015;GUGERLI et al, 2007;GUI-CHOUX et al, 2011NEOPHYTOU, 2014;NEOPHYTOU et al, 2015;YÜCEDAG and GAILING, 2013).…”

Section: Introductionmentioning

confidence: 99%

Tracing the origin and species identity of Quercus robur and Quercus petraea in Europe: a review

Blanc-Jolivet

Liesebach

2015

Silvae Genetica

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Traceability of forest material has received recently increasing interest and European regulations already apply on forest reproductive material and timber. DNA fingerprinting methods allow identification of species and control of geographic origin, providing that genetic reference data is available. In this review, we focus on the two economically important European oak species, Quercus robur and Q. petraea. We describe the available molecular markers and data, and discuss their applicability for traceability systems of forest reproductive material at a European scale. We also provide insights on the use of DNA fingerprinting on timber material.

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Morphological and genetic variation within and among four Quercus petraea and Q. robur natural populations

Cited by 18 publications

References 42 publications

Stomatal density in Quercus petraea and Q. robur natural populations in Northern Turkey

Stomatal density in Quercus petraea and Q. robur natural populations in Northern Turkey

Interspecific gene flow and maintenance of species integrity in oaks

Tracing the origin and species identity of Quercus robur and Quercus petraea in Europe: a review

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