Bidirectional gene flow between Fagus sylvatica L. and F. orientalis Lipsky despite strong genetic divergence

Forest Ecology and Management, Journal Year: 2023, Volume and Issue: 537, P. 120947 - 120947

Published: March 28, 2023

Language: Английский

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Indications of Genetic Admixture in the Transition Zone between Fagus sylvatica L. and Fagus sylvatica ssp. orientalis Greut. & Burd

Diversity, Journal Year: 2019, Volume and Issue: 11(6), P. 90 - 90

Published: June 10, 2019

Two subspecies of European beech (Fagus sylvatica L.) can be found in southeast Europe: Fagus ssp. L. and orientalis (Lipsky) Greut. & Burd. Lipsky). In a previous study, based on genetic diversity patterns morphological characters, indications hybridization between both were northeastern Greece, known contact zone F. orientalis. Nevertheless, potential admixture has not been investigated systematically before. Here, we structure 14 populations originating from Greece Turkey as well two reference Germany nine expressed sequence tag-simple repeat (EST-SSR) markers. Very low differentiation was detected among (mean GST: 0.005) 0.008), but substantial the 0.122). Indications for revealed one population Greece. One markers showed specific allele frequencies may used diagnostic marker future studies to discriminate subspecies.

Language: Английский

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Morphological and genetic variation in natural populations of Quercus vulcanica and Q. frainetto

Plant Systematics and Evolution, Journal Year: 2021, Volume and Issue: 307(1)

Published: Jan. 13, 2021

Language: Английский

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Genetic differentiation of indigenous (Quercus robur L.) and late flushing oak stands (Q. robur L. subsp. slavonica (Gáyer) Mátyás) in western Germany (North Rhine-Westphalia)

European Journal of Forest Research, Journal Year: 2021, Volume and Issue: 140(5), P. 1179 - 1194

Published: June 26, 2021

Abstract Slavonian oaks ( Quercus robur subsp. slavonica (Gáyer) Mátyás) originating from Croatia have been cultivated in Germany mainly the Münsterland region of North Rhine-Westphalia since second half nineteenth century. Compared to indigenous pedunculate oak stands Germany, they are characterised by their late bud burst, but also excellent bole shape and faster height growth. Previously, (= flushing oaks) were studied at chloroplast (cp) DNA markers order determine geographical origin. The origin material is probably Sava lowland between Zagreb Belgrade. In present study, aim was genetically differentiate using nuclear markers. For this purpose, we used 20 Simple Sequence Repeats (nSSRs). A total 37 (mean: 18.6 samples per population with an age 95 210 years) examined, which 21 characterized as three for not clear. Maternally inherited analysed earlier all validate geographic We found that native represented two genetic clusters weakly differentiated. (N a = 9.85, r 8.689, H o 0.490, e 0.540) showed similar levels variation 7.850, 7.846, 0.484, 0.526). Differences growth phenology low consistent differentiation groups suggest both taxa represent different ecotypes specific local adaptations, perhaps separated less overlapping flowering phenologies. microsatellite combination cpDNA suitable stands.

Language: Английский

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Genetic diversity and structure of Oriental and European beech populations from Iran and Europe

Silvae genetica/Silvae Genetica, Journal Year: 2020, Volume and Issue: 69(1), P. 55 - 62

Published: Jan. 1, 2020

Abstract Genetic variation is a major component of plant development and adaptation, recent studies have shown that genetic among species can important ecological effects. Oriental beech ( Fagus orientalis Lipsky) dominant tree in the Hyrcanian forests, where it occupies approximately 18 % forested area. In this study, nine expressed sequence tag simple repeat (EST-SSR) markers were used to determine diversity structure Iranian populations growing at different altitudes. We further compared structures F. sylvatica L. population from hybrid zone two taxa southeast Europe, central Europe. All showed high diversity, which was similar other The differentiation very low. contrast, distinct found between analyzed European ). One EST-SSR identified differentiate G ST : 0.503) with pronounced allele frequency differences taxa. Specifically, characteristic 189 almost absent all present low frequencies regions. This study helps extend knowledge populations. It gives insights into center edge species’ distribution range as well beech.

Language: Английский

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Assessing heat stress tolerance in Castanea sativa

Forestry An International Journal of Forest Research, Journal Year: 2022, Volume and Issue: unknown

Published: July 2, 2022

Abstract Increasing temperatures and heat waves decimate the productivity survival of valuable trees like European chestnut (Castanea sativa Miller). The main objectives this study were to assess variation in stress tolerance within between populations, select molecular markers associated with tolerance, use selected explore adaptive potential C. tolerate stress. Forty-eight from three Spanish wild populations contrasting climate characteristics used. Seven out 20 expressed sequence tag- simple repeat (EST-SSR) selected. To validate markers, progenies 48 subjected for 7 days their was assessed through morphological physiological changes. Leaf proline content induced by highest least thermophilic population. Genetic structure analysis revealed a cluster that included 81 per cent seedlings most Signatures positive selection detected using VIT099 POR016 antioxidant response plants damage. These should be as candidates early individuals tolerant sativa. Molecular findings converged better understand adaptation global warming.

Language: Английский

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Genetic variability of indigenous (Quercus robur L.) and late flushing oak (Quercus robur L. subsp. slavonica (Gáyer) Mátyás) in adult stands compared with their natural regeneration

European Journal of Forest Research, Journal Year: 2022, Volume and Issue: 141(6), P. 1073 - 1088

Published: Aug. 29, 2022

Abstract Slavonian oak ( Quercus robur subsp. slavonica (Gáyer) Mátyás) is currently gaining interest in forestry due to forest restructuring Germany caused by climate change. oaks originating from Croatia have been introduced into mainly the Münsterland region of North Rhine-Westphalia since second half nineteenth century. They are characterized their late bud burst, long clear bole, stem straightness and faster height diameter growth compared indigenous Germany. In this study, genetic differentiation adult trees respective progeny two stands Hamm-Westtünnen, was evaluated. Genetic diversity structure were estimated using 23 nuclear simple sequence repeat (SSRs) 5 maternally inherited chloroplast microsatellite markers (cpSSRs). The mean expected heterozygosity 0.545 allelic richness 6.23 indicate high studied populations. group progenies (A R = 8.40, H o 0.524, e 0.559, F IS 0.064) shows similar levels variation as 8.37, 0.513, 0.554, 0.075). between low (F ST 0.013). assignment individuals STRUCTURE revealed that populations divided clusters. There no evidence extensive hybridization or gene flow native populations, possibly different timing burst taxa.

Language: Английский

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Genetic diversity of Dalbergia melanoxylon Guill. & Perr. populations in the Ferlo zone (Senegal) using nuclear and chloroplast microsatellite markers

Genetic Resources and Crop Evolution, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 15, 2024

Abstract Dalbergia melanoxylon Guill. & Perr. is a highly valued species in the Ferlo region, and its wood used for various purposes by local populations, including firewood, service wood, timber. This multifunctionality has weakened it been identified as threatened previous research. The aim of this study was to investigate genetic variability three populations (LC, VC, YC) along north–south rainfall gradient, support species’ sustainable management conservation. Eighteen microsatellite markers were used, eight nuclear (nSSR) 10 chloroplast (cpSSR) markers, test their transferability D. variability. results showed that all nSSRs cpSSRs transferable, however, only five one cpSSR polymorphic downstream analysis. Based on nSSRs, comparatively high, but non-significantly different, variation found (LC: H e = 0.650, VC: 0.674, YC: 0.706), indications inbreeding detected. For single cpSSR, haplotypes identified. Haplotype diversity (H d ) varied LC 0.536), VC 0.577), YC 0.674). Low moderate differentiation observed between ( F st nSSR 0.019 0.133) suggesting recent fragmentation not yet impacted could become more pronounced future generations. finding underscores need further research effective conservation strategies region.

Language: Английский

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Oak Population Genomics

Population genomics, Journal Year: 2021, Volume and Issue: unknown

Published: Jan. 1, 2021

Language: Английский

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Genetische Charakterisierung der slawonischen Stieleiche (Quercus robur subsp. slavonica (Gáyer) Mátyás) in Deutschland

Published: Jan. 1, 2024

Der Aufbau und die Bestockung von Wäldern haben einen starken Einfluss auf Waldökosysteme sowie deren Leistungen Funktionen. Aus heutiger Sicht wichtige Eigenschaften wie Ökosystemstabilität, Erhalt biologischer Vielfalt Kohlenstoffspeicherfähigkeit lassen sich über verschiedene Ansätze der Bewirtschaftung beeinflussen. Mit dem durch klimatische Veränderungen notwendig gewordenen Waldumbau gewinnen immer häufiger vorher kaum beachtete Alternativbaumarten an forstlichem Interesse rücken damit stärker in den Fokus Forschung. Eine dieser ist aus Osten Kroatiens stammende slawonische Stieleiche (Quercus robur subsp. slavonica (Gáyer) Mátyás). In Deutschland nimmt bisher relativ unbekannte Art als eingebürgerte Varietät eine Sonderstellung ein. Sie könnte jedoch helfen Anpassungsfähigkeit zukünftiger Eichenmischwälder zu verbessern, da ihr Ursprungsgebiet bereits gegenwärtig Klimadaten aufweist, zukünftig für prognostiziert werden. Um das genetische Potential Baumart abschätzen können, müssen lohnenswerte Bestände hinsichtlich ihrer genetischen Vielfalt, Struktur Diversität untersucht Nur umfassende Ausstattung ermöglicht es Pflanzen u. a. Genfluss, veränderliche Umweltbedingungen anzupassen. Anhand nachfolgend beschriebenen Studien durchgeführten Untersuchungen soll diese Dissertation Beitrag dazu leisten: Die Studie (Kapitel 2) mit Titel „Die Mátyás) Alternative Klimawandel: Experimentelle genomische Ressourcen“ befasst Forschungsstand slawonischen dient Themeneinleitung. Den Schwerpunkt bildet Untersuchung einer Nutzung Alternativbaumart unter Berücksichtigung prognostizierter Klimaveränderungen. Einhergehend geringen forstlichen Varietät, gibt nur wenige Charakterisierung, Variation und/oder Merkmalsvariation. diesem Manuskript werden einschlägige Ergebnisse zur anpassungsrelevanter räumlicher genetischer slawonischer Stieleichenbestände Assoziationen Merkmalsvariation innerartlichen Kreuzungsnachkommenschaft [Q. x Q. slavonica] erörtert. Vor Hintergrund, dass geographische Herkunftsermittlung überwiegend anhand Chloroplasten-DNA-Markern wurde, nächste 3) Differenzierung einheimischer Westdeutschland (Nordrhein-Westphalen) Kern-DNA-Marker. Hier wurden Proben 37 einheimischen Populationen, früheren sehr gut charakterisieren ließen, 20 Kern-DNA-Markern untersucht. Genetische gilt Voraussetzung nachhaltige Ressourcen um langfristige Baumarten gewährleisten. Unter Verwendung des Kern-DNA-Markersets ließen Populationen Haplotypen, sowohl auch Kroatien natürlich vorkommen, unterscheiden. Insgesamt zeigen Ergebnisse, Kern- Chloroplasten-DNA Marker sind, genetisch ähnlichen Taxa Kombination beider Markerarten lässt erstmals eindeutige Identifizierung Stieleichenvarietäten Mischbeständen hilft innerhalb Zertifizierung Herkunft Vermehrungsmaterials nachzuweisen. weiteren 4) Naturverjüngung räumlichen Strukturen neben künstlichen Bestandsbegründung natürliche Verjüngung waldbaulich praktizierte Form Waldregeneration, zulässt Erbgut erhalten. Neben Selbstdifferenzierung quantitativ ausreichend verteilter Individuen Verjüngungsschicht sind Qualität Vitalität Bestandes räumlich relevant. Für dritte daher zwei einheimische 23 Kern DNA-Markern 5 charakterisiert. zeigen, Information Altbeständen fast vollständig Generation weitergegeben wird. Grund hierfür liegt ähnlich hohen Maß Variation, bis übereinstimmenden Haplotypen Zusammensetzung sie jeweiligen Altbestände aufzeigen. Da stark ändernde Überleben auswirkt, kann hohe Variabilität Stabilität Nachhaltigkeit Waldökosystemen gewährleistet Darüber hinaus gab keine Hinweise Hybridisierung oder Genfluss zwischen Populationen. Ein naheliegender möglicher unterschiedliche Austriebzeitpunkt untersuchten Taxa. Das letzte Kapitel 5) Erstellung ersten RADseq (restriction site-associated DNA sequencing) - SNP-Markern basierenden, hochauflösenden, Kopplungskarte (männlich weiblich) intraspezifischen Quercus Vollgeschwisterfamilie (Q. ssp. slavonica). Zur weiblichen männlichen Kopplungskarten 249 Nachkommen kontrollierten Kreuzung Q.robur verwendet. Dabei Anwendung Pseudo-Testcross-Methode Hilfe Kosambis Kartierfunktion erstellt. 473 SNP-Marker 502 kartiert, jeweils 12 Kopplungsgruppen bestehen. Diese Karten bilden wertvolle Grundlage Durchführung QTL (Quantitative Trait Loci) Analysen, adaptiver Merkmale beteiligter Gene vergleichende Genomanalysen.

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