128 results on '"Papageorgiou, Aristotelis C."'
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2. Diversity in Shade and Light Leaf Morphology in Beech Populations of South Rodopi Mountains
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Boutsios, Stefanos, Vidalis, Amaryllis, Adamidis, George C., Hatziskakis, Seraphim, Varsamis, Georgios, Tsiripidis, Ioannis, Karanikola, Paraskevi, and Papageorgiou, Aristotelis C.
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- 2021
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3. Ecological and Biogeographical Imprints in a Beech Glacial Refugium
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Tsiripidis, Ioannis, primary, Stamellou, Stavroula, additional, Papageorgiou, Aristotelis C., additional, and Drouzas, Andreas D., additional
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- 2024
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4. An approach to genetic resources conservation of peripheral isolated plant populations: the case of an island narrow endemic species
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Eliades, Nicolas-George H., Papageorgiou, Aristotelis C., Fady, Bruno, Gailing, Oliver, Leinemann, Ludger, and Finkeldey, Reiner
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- 2019
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5. Assessing Genetic Diversity and Population Differentiation in Wild Hop (Humulus lupulus) from the Region of Central Greece via SNP-NGS Genotyping
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Tegopoulos, Konstantinos, primary, Fountas, Dimitrios V., additional, Andronidou, Elisavet-Maria, additional, Bagos, Pantelis G., additional, Kolovos, Petros, additional, Skavdis, George, additional, Pergantas, Panagiotis, additional, Braliou, Georgia G., additional, Papageorgiou, Aristotelis C., additional, and Grigoriou, Maria E., additional
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- 2023
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6. The ELIXIR Biodiversity Community: Understanding short- and long-term changes in biodiversity
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Waterhouse, Robert M., primary, Adam-Blondon, Anne-Françoise, additional, Balech, Bachir, additional, Barta, Endre, additional, Heil, Katharina F., additional, Hughes, Graham M., additional, Jermiin, Lars S., additional, Kalaš, Matúš, additional, Lanfear, Jerry, additional, Pafilis, Evangelos, additional, Papageorgiou, Aristotelis C., additional, Psomopoulos, Fotis, additional, Raes, Niels, additional, Burgin, Josephine, additional, and Gabaldón, Toni, additional
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- 2023
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7. Differentiation and admixture ofFagus sylvaticaL. andFagus orientalisLipsky in a northern German forest — learning from pioneer forest work
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Budde, Katharina Birgit, primary, Hötzel, Sophie, additional, Müller, Markus, additional, Samsonidze, Natia, additional, Papageorgiou, Aristotelis C., additional, and Gailing, Oliver, additional
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- 2022
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8. Genetic diversity and population structure of the serpentine endemic Ni hyperaccumulator Alyssum lesbiacum
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Adamidis, George C., Dimitrakopoulos, Panayiotis G., Manolis, Apostolos, and Papageorgiou, Aristotelis C.
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- 2014
9. Building the Molecular Biodiversity Greece Community
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Aravanopoulos, Filippos A, Arvanitidis, Christos, Bista, Iliana, Dailianis, Thanos, Galanis, Alex, Ioannidis, Panagiotis, Kapli, Paschalia, Klapa, Maria I., Kolovos, Petros, Kotoulas, Georgios, Magoulas, Antonios N., Manousaki, Tereza, Pafilis, Evangelos, Papageorgiou, Aristotelis C., Papakostas, Spiros, Paragkamian, Savvas, Pavlidis, Pavlos, Pavloudi, Christina, Poulakakis, Nikos, Psomopoulos, Fotis, Reczko, Martin, Sagonas, Kostas, Stamatakis, Alexandros, Theofanopoulou, Constantina, Triantafyllidis, Alexandros, Tsigenopoulos, Costas S., Vasileiadou, Katerina, and Zafeiropoulos, Haris
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strategy document ,molecular biodiversity ,Greece ,network of networks ,community building - Abstract
In the face of the biodiversity crisis, concerted efforts towards understanding the effects of climate change and habitat loss and fragmentation, both locally and globally, are urgently needed. These are often attempted by leveraging the advances of modern genomics and bioinformatics methodologies. Especially in biodiversity hotspots, the need to understand, monitor and mitigate the loss of biodiversity is pivotal. Greece is a country with especially high endemism. A large percentage of its endemic species is threatened by climate change and human activities. To this end, the national academic community in biodiversity genomics has established a corresponding network of scientists from various Greek research institutes and universities covering different disciplines of biodiversity research. The network aims to support and combine individual actions to establish a Task Force that will channel the flow of information amongst researchers, policy makers, stakeholders and the local society. Our overarching goal is to build a sustainable community and infrastructure for the efficient management of the entire molecular biodiversity data cycle (i.e., from production and storage to the analysis and modelling of data, development of computational tools, and knowledge extraction). Using national and European infrastructures, such as ELIXIR and LifeWatch, we envision to set the ground for studying biodiversity through the lens of biodiversity genomics and offer evidence-based knowledge to guide management of the habitats and the biodiversity they host, as well as the implementation of appropriate policies.
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- 2022
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10. The relationship between vegetation and modern pollen assemblages on Mount Paggeo (NE Greece)/Relación entre la vegetación y la lluvia polínica actual en el Monte Paggeo (NE Grecia)
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Glais, Arthur, Papageorgiou, Aristotelis C., Tsiripidis, Ioannis, Abel-Schaad, Daniel, Lopez-Saez, Jose Antonio, and Lespez, Laurent
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- 2016
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11. DNA-based identification of Abies cephalonica, A. alba and their hybrid (A. × borisii-regis) at the individual-level
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Siskas, Evangelos, primary, Bella, Eleni, additional, Papageorgiou, Aristotelis C., additional, Kappas, Ilias, additional, Tsiripidis, Ioannis, additional, and Drouzas, Andreas D., additional
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- 2022
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12. Changes in Watering Frequency Stimulate Differentiated Adaptive Responses among Seedlings of Different Beech Populations
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Varsamis, Georgios, primary, Adamidis, George C., additional, Merou, Theodora, additional, Takos, Ioannis, additional, Tseniklidou, Katerina, additional, Dimitrakopoulos, Panayiotis G., additional, and Papageorgiou, Aristotelis C., additional
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- 2022
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13. Distribution and physical traits of red wood ant mounds in a managed Rhodope mountains forest
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Tsikas, Angelos, Karanikola, Paraskevi, and Papageorgiou, Aristotelis C.
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- 2016
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14. DNA-based identification of Abies cephalonica, A. alba and their hybrid (A. × borisii-regis) at the individual-level.
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Siskas, Evangelos, Bella, Eleni, Papageorgiou, Aristotelis C., Kappas, Ilias, Tsiripidis, Ioannis, and Drouzas, Andreas D.
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FIR ,SILVER fir ,MITOCHONDRIAL DNA ,GENETIC markers ,PLANT evolution ,PLANT ecology - Abstract
Hybridization is a process of great importance in the ecology and evolution of plants. However, identifying hybrids is not an easy task, especially in cases of sympatry. Such cases are the Abies taxa in Greece; Silver fir (A. alba), Greek fir (A. cephalonica) and King Boris fir (A. × borisii-regis). The latter has been characterized as a hybrid between the first two species as its morphological traits are either a combination of the parental ones or intermediate. Besides the morphological traits, A. × borisii-regis has so far been identified only at the population level, with biochemical and DNA markers. Here, we describe the identification of A. × borisii-regis at the individual level by employing a species-specific marker in the cpDNA and another in mtDNA, taking advantage of their uniparental inheritance mode from the paternal and the maternal parent, respectively. In addition, based on these markers, essential information emerges on the distribution and the mtDNA diversity of the Abies taxa in Greece. [ABSTRACT FROM AUTHOR]
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- 2023
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15. 5S‐IGS rDNA in wind‐pollinated trees ( Fagus L.) encapsulates 55 million years of reticulate evolution and hybrid origins of modern species
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Cardoni, Simone, primary, Piredda, Roberta, additional, Denk, Thomas, additional, Grimm, Guido W., additional, Papageorgiou, Aristotelis C., additional, Schulze, Ernst‐Detlef, additional, Scoppola, Anna, additional, Salehi Shanjani, Parvin, additional, Suyama, Yoshihisa, additional, Tomaru, Nobuhiro, additional, Worth, James R. P., additional, and Cosimo Simeone, Marco, additional
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- 2021
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16. Genomic and Phylogenetic Analysis of Lactiplantibacillus plantarum L125, and Evaluation of Its Anti-Proliferative and Cytotoxic Activity in Cancer Cells
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Tegopoulos, Konstantinos, primary, Stergiou, Odysseas Sotirios, additional, Kiousi, Despoina Eugenia, additional, Tsifintaris, Margaritis, additional, Koletsou, Ellie, additional, Papageorgiou, Aristotelis C., additional, Argyri, Anthoula A., additional, Chorianopoulos, Nikos, additional, Galanis, Alex, additional, and Kolovos, Petros, additional
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- 2021
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17. Whole-Genome Sequencing, Phylogenetic and Genomic Analysis of Lactiplantibacillus pentosus L33, a Potential Probiotic Strain Isolated From Fermented Sausages
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Stergiou, Odysseas Sotirios, primary, Tegopoulos, Konstantinos, additional, Kiousi, Despoina Eugenia, additional, Tsifintaris, Margaritis, additional, Papageorgiou, Aristotelis C., additional, Tassou, Chrysoula C., additional, Chorianopoulos, Nikos, additional, Kolovos, Petros, additional, and Galanis, Alex, additional
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- 2021
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18. Patterns of Leaf Morphological Traits of Beech (Fagus sylvatica L.) along an Altitudinal Gradient
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Adamidis, George C., primary, Varsamis, Georgios, additional, Tsiripidis, Ioannis, additional, Dimitrakopoulos, Panayiotis G., additional, and Papageorgiou, Aristotelis C., additional
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- 2021
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19. Fine-Scale Spatial Patterns of the Genetic Diversity ofEuropean Beech (Fagus sylvatica L.) around a Mountainous Glacial Refugium in the SW Balkans
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Tsipidou, Olympia, primary, Leinemann, Ludger, additional, Korakis, Georgios, additional, Finkeldey, Reiner, additional, Gailing, Oliver, additional, and Papageorgiou, Aristotelis C., additional
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- 2021
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20. Genetic variation of beech (Fagus sylvatica L.) in Rodopi (N.E. Greece)
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Papageorgiou, Aristotelis C., Vidalis, Amaryllis, Gailing, Oliver, Tsiripidis, Ioannis, Hatziskakis, Seraphim, Boutsios, Stefanos, Galatsidas, Spiros, and Finkeldey, Reiner
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- 2008
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21. 5S‐IGS rDNA in wind‐pollinated trees ( Fagus L.) encapsulates 55 million years of reticulate evolution and hybrid origins of modern species
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Cardoni, Simone, Piredda, Roberta, Denk, Thomas, Grimm, Guido W., Papageorgiou, Aristotelis C., Schulze, Ernst‐Detlef, Scoppola, Anna, Salehi Shanjani, Parvin, Suyama, Yoshihisa, Tomaru, Nobuhiro, Worth, James R. P., Cosimo Simeone, Marco, Cardoni, Simone, Piredda, Roberta, Denk, Thomas, Grimm, Guido W., Papageorgiou, Aristotelis C., Schulze, Ernst‐Detlef, Scoppola, Anna, Salehi Shanjani, Parvin, Suyama, Yoshihisa, Tomaru, Nobuhiro, Worth, James R. P., and Cosimo Simeone, Marco
- Abstract
Standard models of plant speciation assume strictly dichotomous genealogies in which a species, theancestor, is replaced by two offspring species. The reality in wind-pollinated trees with long evolutionaryhistories is more complex: species evolve from other species through isolation when genetic drift exceeds gene flow; lineage mixing can give rise to new species (hybrid taxa such as nothospecies and allopolyploids). The multi-copy, potentially multi-locus 5S rDNA is one of few gene regions conserving signal from dichotomous and reticulate evolutionary processes down to the level of intra-genomic recombination. Therefore, it can provide unique insights into the dynamic speciation processes of lineages that diversified tens of millions of years ago. Here, we provide the first high-throughput sequencing (HTS) of the 5S intergenic spacers (5S-IGS) for a lineage of wind-pollinated subtropical to temperate trees, the Fagus crenata – F.sylvatica s.l. lineage, and its distant relative F. japonica. The observed 4963 unique 5S-IGS variants reflect acomplex history of hybrid origins, lineage sorting, mixing via secondary gene flow, and intra-genomic competition between two or more paralogous-homoeologous 5S rDNA lineages. We show that modern species are genetic mosaics and represent a striking case of ongoing reticulate evolution during the past 55 million years., EDS and GWG gratefully acknowledge the support of the German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig funded by the German Research Foundation (FZT 118). The research was partially supported by MIUR (Italian Ministry for Education, University and Research), Law 232/2016, ‘Department of excellence’. Open Access Funding provided by Universita degli Studi della Tuscia within the CRUI-CARE Agreement.
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- 2021
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22. Genetic differences between autochthonous and breeding populations of common cypress (Cupressus sempervirens L.) in Greece
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Papageorgiou, Aristotelis C., Finkeldey, Reiner, Hattemer, Hans H., and Xenopoulos, Sotirios
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- 2005
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23. COVID-19: An Outcome of Biodiversity Loss or a Conspiracy? Investigating the Attitudes of Environmental Students
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Tsantopoulos, Georgios, primary, Papageorgiou, Aristotelis C., additional, and Karasmanaki, Evangelia, additional
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- 2021
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24. Genetic diversity of alpine Dryas octopetala populations at their southern distribution limit in Europe
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Varsamis, Georgios, primary, Merou, Theodora, additional, Karapatzak, Eleftherios, additional, Papageorgiou, Aristotelis C., additional, Fotiadis, Georgios, additional, and Tsiftsis, Spyros, additional
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- 2021
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25. Conservation of Biodiversity in Managed Forests: Developing an Adaptive Decision Support System
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Poirazidis, Konstantinos, primary, Schindler, Stefan, additional, Kati, Vassiliki, additional, Martinis, Aristotelis, additional, Kalivas, Dionissios, additional, Kasimiadis, Dimitris, additional, Wrbka, Thomas, additional, and Papageorgiou, Aristotelis C., additional
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- 2011
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26. 5S-IGS rDNA in wind-pollinated trees (FagusL.) encapsulates 55 million years of reticulate evolution and hybrid origins of modern species
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Cardoni, Simone, primary, Piredda, Roberta, additional, Denk, Thomas, additional, Grimm, Guido W., additional, Papageorgiou, Aristotelis C., additional, Schulze, Ernst-Detlef, additional, Scoppola, Anna, additional, Shanjani, Parvin Salehi, additional, Suyama, Yoshihisa, additional, Tomaru, Nobuhiro, additional, Worth, James R.P., additional, and Simeone, Marco Cosimo, additional
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- 2021
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27. Diversity in Shade and Light Leaf Morphology in Beech Populations of South Rodopi Mountains
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Boutsios, Stefanos, primary, Vidalis, Amaryllis, additional, Adamidis, George C., additional, Hatziskakis, Seraphim, additional, Varsamis, Georgios, additional, Tsiripidis, Ioannis, additional, Karanikola, Paraskevi, additional, and Papageorgiou, Aristotelis C., additional
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- 2020
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28. Indications of Genetic Admixture in the Transition Zone between Fagus sylvatica L. and Fagus sylvatica ssp. orientalis Greut. & Burd
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Müller, Markus, Lopez, Precious Annie, Papageorgiou, Aristotelis C., Tsiripidis, Ioannis, and Gailing, Oliver
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forest ,lcsh:Biology (General) ,diagnostic marker ,genetic diversity ,Fagaceae ,beech ,hybridization ,lcsh:QH301-705.5 ,microsatellites - Abstract
Two subspecies of European beech (Fagus sylvatica L.) can be found in southeast Europe: Fagus sylvatica ssp. sylvatica L. and Fagus sylvatica ssp. orientalis (Lipsky) Greut. & Burd. (Fagus orientalis Lipsky). In a previous study, based on genetic diversity patterns and morphological characters, indications of hybridization between both subspecies were found in northeastern Greece, a known contact zone of F. sylvatica and F. orientalis. Nevertheless, potential genetic admixture has not been investigated systematically before. Here, we investigated genetic diversity and genetic structure of 14 beech populations originating from Greece and Turkey as well as of two reference F. sylvatica populations from Germany based on nine expressed sequence tag-simple sequence repeat (EST-SSR) markers. Very low genetic differentiation was detected among F. sylvatica populations (mean GST: 0.005) as well as among F. orientalis populations (mean GST: 0.008), but substantial differentiation was detected between populations of the two subspecies (mean GST: 0.122). Indications for hybridization between both subspecies were revealed for one population in Greece. One of the genetic markers showed specific allele frequencies for F. sylvatica and F. orientalis and may be used as a diagnostic marker in future studies to discriminate both subspecies.
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- 2019
29. Diploid sporophytic tissue in the seed of Cupressus sempervirens L
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Papageorgiou, Aristotelis C.
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Conifers -- Seeds ,Ploidy -- Research ,Cypress -- Research ,Biological sciences - Abstract
Conifer seeds contain a female endosperm, which is usually haploid. Biochemical analysis shows the Cupressus sempervirens seeds contain nonembryonic tissue as well. This tissue expresses at the isozyme gene locus, and is diploid. The origin of this tissue and why it appears only in the Mediterranean cypress remains unknown.
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- 1998
30. TRY plant trait database – enhanced coverage and open access
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Kattge, Jens, Bönisch, Gerhard, Díaz, Sandra, Lavorel, Sandra, Prentice, Iain Colin, Leadley, Paul, Tautenhahn, Susanne, Werner, Gijsbert D. A., Aakala, Tuomas, Abedi, Mehdi, Acosta, Alicia T. R., Adamidis, George C., Adamson, Kairi, Aiba, Masahiro, Albert, Cécile H., Alcántara, Julio M., Alcázar C, Carolina, Aleixo, Izabela, Ali, Hamada, Amiaud, Bernard, Ammer, Christian, Amoroso, Mariano M., Anand, Madhur, Anderson, Carolyn, Anten, Niels, Antos, Joseph, Apgaua, Deborah Mattos Guimarães, Ashman, Tia-Lynn, Asmara, Degi Harja, Asner, Gregory P., Aspinwall, Michael, Atkin, Owen, Aubin, Isabelle, Baastrup-Spohr, Lars, Bahalkeh, Khadijeh, Bahn, Michael, Baker, Timothy, Baker, William J., Bakker, Jan P., Baldocchi, Dennis, Baltzer, Jennifer, Banerjee, Arindam, Baranger, Anne, Barlow, Jos, Barneche, Diego R., Baruch, Zdravko, Bastianelli, Denis, Battles, John, Bauerle, William, Bauters, Marijn, Bazzato, Erika, Beckmann, Michael, Beeckman, Hans, Beierkuhnlein, Carl, Bekker, Renee, Belfry, Gavin, Belluau, Michael, Beloiu, Mirela, Benavides, Raquel, Benomar, Lahcen, Berdugo-Lattke, Mary Lee, Berenguer, Erika, Bergamin, Rodrigo, Bergmann, Joana, Bergmann Carlucci, Marcos, Berner, Logan, Bernhardt-Römermann, Markus, Bigler, Christof, Bjorkman, Anne D., Blackman, Chris, Blanco, Carolina, Blonder, Benjamin, Blumenthal, Dana, Bocanegra-González, Kelly T., Boeckx, Pascal, Bohlman, Stephanie, Böhning-Gaese, Katrin, Boisvert-Marsh, Laura, Bond, William, Bond-Lamberty, Ben, Boom, Arnoud, Boonman, Coline C. F., Bordin, Kauane, Boughton, Elizabeth H., Boukili, Vanessa, Bowman, David M. J. S., Bravo, Sandra, Brendel, Marco Richard, Broadley, Martin R., Brown, Kerry A., Bruelheide, Helge, Brumnich, Federico, Bruun, Hans Henrik, Bruy, David, Buchanan, Serra W., Bucher, Solveig Franziska, Buchmann, Nina, Buitenwerf, Robert, Bunker, Daniel E., Bürger, Jana, Burrascano, Sabina, Burslem, David F. R. P., Butterfield, Bradley J., Byun, Chaeho, Marques, Marcia, Scalon, Marina C., Caccianiga, Marco, Cadotte, Marc, Cailleret, Maxime, Camac, James, Camarero, Jesús Julio, Campany, Courtney, Campetella, Giandiego, Campos, Juan Antonio, Cano-Arboleda, Laura, Canullo, Roberto, Carbognani, Michele, Carvalho, Fabio, Casanoves, Fernando, Castagneyrol, Bastien, Catford, Jane A., Cavender-Bares, Jeannine, Cerabolini, Bruno E. L., Cervellini, Marco, Chacón-Madrigal, Eduardo, Chapin, Kenneth, Chapin, F. Stuart, Chelli, Stefano, Chen, Si-Chong, Chen, Anping, Cherubini, Paolo, Chianucci, Francesco, Choat, Brendan, Chung, Kyong-Sook, Chytrý, Milan, Ciccarelli, Daniela, Coll, Lluís, Collins, Courtney G., Conti, Luisa, Coomes, David, Cornelissen, Johannes H. C., Cornwell, William K., Corona, Piermaria, Coyea, Marie, Craine, Joseph, Craven, Dylan, Cromsigt, Joris P. G. M., Csecserits, Anikó, Cufar, Katarina, Cuntz, Matthias, da Silva, Ana Carolina, Dahlin, Kyla M., Dainese, Matteo, Dalke, Igor, Dalle Fratte, Michele, Dang-Le, Anh Tuan, Danihelka, Jirí, Dannoura, Masako, Dawson, Samantha, de Beer, Arend Jacobus, De Frutos, Angel, De Long, Jonathan R., Dechant, Benjamin, Delagrange, Sylvain, Delpierre, Nicolas, Derroire, Géraldine, Dias, Arildo S., Diaz-Toribio, Milton Hugo, Dimitrakopoulos, Panayiotis G., Dobrowolski, Mark, Doktor, Daniel, Dřevojan, Pavel, Dong, Ning, Dransfield, John, Dressler, Stefan, Duarte, Leandro, Ducouret, Emilie, Dullinger, Stefan, Durka, Walter, Duursma, Remko, Dymova, Olga, E-Vojtkó, Anna, Eckstein, Rolf Lutz, Ejtehadi, Hamid, Elser, James, Emilio, Thaise, Engemann, Kristine, Erfanian, Mohammad Bagher, Erfmeier, Alexandra, Esquivel-Muelbert, Adriane, Esser, Gerd, Estiarte, Marc, Domingues, Tomas F., Fagan, William F., Fagúndez, Jaime, Falster, Daniel S., Fang, Jingyun, Farris, Emmanuele, Fazlioglu, Fatih, Feng, Yanhao, Fernandez-Mendez, Fernando, Ferrara, Carlotta, Ferreira, Joice, Fidelis, Alessandra, Finegan, Bryan, Firn, Jennifer, Flowers, Timothy J., Flynn, Dan F. B., Fontana, Veronika, Forey, Estelle, Forgiarini, Cristiane, François, Louis, Frangipani, Marcelo, Frank, Dorothea, Frenette-Dussault, Cedric, Freschet, Grégoire T., Fry, Ellen L., Fyllas, Nikolaos M., Mazzochini, Guilherme G., Gachet, Sophie, Gallagher, Rachael, Ganade, Gislene, Ganga, Francesca, García-Palacios, Pablo, Gargaglione, Verónica, Garnier, Eric, Garrido, Jose Luis, de Gasper, André Luís, Gea-Izquierdo, Guillermo, Gibson, David, Gillison, Andrew N., Giroldo, Aelton, Glasenhardt, Mary-Claire, Gleason, Sean, Gliesch, Mariana, Goldberg, Emma, Göldel, Bastian, Gonzalez-Akre, Erika, Gonzalez-Andujar, Jose L., González-Melo, Andrés, González-Robles, Ana, Graae, Bente Jessen, Granda, Elena, Graves, Sarah, Green, Walton A., Gregor, Thomas, Gross, Nicolas, Guerin, Greg R., Günther, Angela, Gutiérrez, Alvaro G., Haddock, Lillie, Haines, Anna, Hall, Jefferson, Hambuckers, Alain, Han, Wenxuan, Harrison, Sandy P., Hattingh, Wesley, Hawes, Joseph E., He, Tianhua, He, Pengcheng, Heberling, Jacob Mason, Helm, Aveliina, Hempel, Stefan, Hentschel, Jörn, Hérault, Bruno, Hereş, Ana-Maria, Herz, Katharina, Heuertz, Myriam, Hickler, Thomas, Hietz, Peter, Higuchi, Pedro, Hipp, Andrew L., Hirons, Andrew, Hock, Maria, Hogan, James Aaron, Holl, Karen, Honnay, Olivier, Hornstein, Daniel, Hou, Enqing, Hough-Snee, Nate, Hovstad, Knut Anders, Ichie, Tomoaki, Igić, Boris, Illa, Estela, Isaac, Marney, Ishihara, Masae, Ivanov, Leonid, Ivanova, Larissa, Iversen, Colleen M., Izquierdo, Jordi, Jackson, Robert B., Jackson, Benjamin, Jactel, Hervé, Jagodzinski, Andrzej M., Jandt, Ute, Jansen, Steven, Jenkins, Thomas, Jentsch, Anke, Jespersen, Jens Rasmus Plantener, Jiang, Guo-Feng, Johansen, Jesper Liengaard, Johnson, David, Jokela, Eric J., Joly, Carlos Alfredo, Jordan, Gregory J., Joseph, Grant Stuart, Junaedi, Decky, Junker, Robert R., Justes, Eric, Kabzems, Richard, Kane, Jeffrey, Kaplan, Zdenek, Kattenborn, Teja, Kavelenova, Lyudmila, Kearsley, Elizabeth, Kempel, Anne, Kenzo, Tanaka, Kerkhoff, Andrew, Khalil, Mohammed I., Kinlock, Nicole L., Kissling, Wilm Daniel, Kitajima, Kaoru, Kitzberger, Thomas, Kjøller, Rasmus, Klein, Tamir, Kleyer, Michael, Klimešová, Jitka, Klipel, Joice, Kloeppel, Brian, Klotz, Stefan, Knops, Johannes M. H., Kohyama, Takashi, Koike, Fumito, Kollmann, Johannes, Komac, Benjamin, Komatsu, Kimberly, König, Christian, Kraft, Nathan J. B., Kramer, Koen, Kreft, Holger, Kühn, Ingolf, Kumarathunge, Dushan, Kuppler, Jonas, Kurokawa, Hiroko, Kurosawa, Yoko, Kuyah, Shem, Laclau, Jean-Paul, Lafleur, Benoit, Lallai, Erik, Lamb, Eric, Lamprecht, Andrea, Larkin, Daniel J., Laughlin, Daniel, Le Bagousse-Pinguet, Yoann, le Maire, Guerric, le Roux, Peter C., le Roux, Elizabeth, Lee, Tali, Lens, Frederic, Lewis, Simon L., Lhotsky, Barbara, Li, Yuanzhi, Li, Xine, Lichstein, Jeremy W., Liebergesell, Mario, Lim, Jun Ying, Lin, Yan-Shih, Linares, Juan Carlos, Liu, Chunjiang, Liu, Daijun, Liu, Udayangani, Livingstone, Stuart, Llusià, Joan, Lohbeck, Madelon, López-García, Álvaro, Lopez-Gonzalez, Gabriela, Lososová, Zdeňka, Louault, Frédérique, Lukács, Balázs A., Lukeš, Petr, Luo, Yunjian, Lussu, Michele, Ma, Siyan, Maciel Rabelo Pereira, Camilla, Mack, Michelle, Maire, Vincent, Mäkelä, Annikki, Mäkinen, Harri, Malhado, Ana Claudia Mendes, Mallik, Azim, Manning, Peter, Manzoni, Stefano, Marchetti, Zuleica, Marchino, Luca, Marcilio-Silva, Vinicius, Marcon, Eric, Marignani, Michela, Markesteijn, Lars, Martin, Adam, Martínez-Garza, Cristina, Martínez-Vilalta, Jordi, Mašková, Tereza, Mason, Kelly, Mason, Norman, Massad, Tara Joy, Masse, Jacynthe, Mayrose, Itay, McCarthy, James, McCormack, M. 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- Abstract
Plant traits-the morphological, anatomical, physiological, biochemical and phenological characteristics of plants-determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of trait-based plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits-almost complete coverage for 'plant growth form'. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and trait-environmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives.
- Published
- 2020
31. 5S‐IGS rDNA in wind‐pollinated trees (Fagus L.) encapsulates 55 million years of reticulate evolution and hybrid origins of modern species.
- Author
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Cardoni, Simone, Piredda, Roberta, Denk, Thomas, Grimm, Guido W., Papageorgiou, Aristotelis C., Schulze, Ernst‐Detlef, Scoppola, Anna, Salehi Shanjani, Parvin, Suyama, Yoshihisa, Tomaru, Nobuhiro, Worth, James R. P., and Cosimo Simeone, Marco
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BIOLOGICAL evolution ,BEECH ,RECOMBINANT DNA ,PLANT species ,GENETIC drift ,GENE flow ,POLLINATION - Abstract
SUMMARY: Standard models of plant speciation assume strictly dichotomous genealogies in which a species, the ancestor, is replaced by two offspring species. The reality in wind‐pollinated trees with long evolutionary histories is more complex: species evolve from other species through isolation when genetic drift exceeds gene flow; lineage mixing can give rise to new species (hybrid taxa such as nothospecies and allopolyploids). The multi‐copy, potentially multi‐locus 5S rDNA is one of few gene regions conserving signal from dichotomous and reticulate evolutionary processes down to the level of intra‐genomic recombination. Therefore, it can provide unique insights into the dynamic speciation processes of lineages that diversified tens of millions of years ago. Here, we provide the first high‐throughput sequencing (HTS) of the 5S intergenic spacers (5S‐IGS) for a lineage of wind‐pollinated subtropical to temperate trees, the Fagus crenata – F. sylvatica s.l. lineage, and its distant relative F. japonica. The observed 4963 unique 5S‐IGS variants reflect a complex history of hybrid origins, lineage sorting, mixing via secondary gene flow, and intra‐genomic competition between two or more paralogous‐homoeologous 5S rDNA lineages. We show that modern species are genetic mosaics and represent a striking case of ongoing reticulate evolution during the past 55 million years. Significance Statement: The evolution of extra‐tropical wind‐pollinated tree genera involves dynamic speciation processes. High‐throughput sequencing of the multi‐copy, potentially multi‐locus 5S rDNA reveals a complex history of hybrid origins, lineage sorting and mixing, and intra‐genomic competition between paralogous‐homeologous loci in the core group of Eurasian beech trees (genus Fagus) and their distant relative, F. japonica. The modern species are genetic mosaics and represent a striking case of at least 55 million years of ongoing reticulate evolution. [ABSTRACT FROM AUTHOR]
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- 2022
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32. Seed Adaptive Traits of Fagus sylvatica Populations in Northeastern Greece
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Varsamis, Georgios, primary, Merou, Theodora, additional, Takos, Ioannis, additional, Malesios, Chrisovalantis, additional, Manolis, Apostolos, additional, and Papageorgiou, Aristotelis C, additional
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- 2020
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33. Adaptive Diversity of Beech Seedlings Under Climate Change Scenarios
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Varsamis, Georgios, Papageorgiou, Aristotelis C., Merou, Theodora, Takos, Ioannis, Malesios, Chrisovalantis, Manolis, Apostolos, Tsiripidis, Ioannis, Gailing, Oliver, Varsamis, Georgios, Papageorgiou, Aristotelis C., Merou, Theodora, Takos, Ioannis, Malesios, Chrisovalantis, Manolis, Apostolos, Tsiripidis, Ioannis, and Gailing, Oliver
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The ability of beech ( Fagus sylvatica L.) populations to adapt to the ongoing climate change is especially important in the southern part of Europe, where environmental change is expected to be more intense. In this study, we tested the existing adaptive potential of eight beech populations from two provenances in N.E. Greece (Evros and Drama) that show differences in their environmental conditions and biogeographical background. Seedling survival, growth and leaf phenological traits were selected as adaptive traits and were measured under simulated controlled climate change conditions in a growth chamber. Seedling survival was also tested under current conditions in the field. In the growth chamber, simulated conditions of temperature and precipitation for the year 2050 were applied for 3 years, under two different irrigation schemes, where the same amount of water was distributed either frequently (once every week) or non-frequently (once in 20 days). The results showed that beech seedlings were generally able to survive under climate change conditions and showed adaptive differences among provenances and populations. Furthermore, changes in the duration of the growing season of seedlings were recorded in the growth chamber, allowing them to avoid environmental stress and high selection pressure. Differences were observed between populations and provenances in terms of temporal distribution patterns of precipitation and temperature, rather than the average annual or monthly values of these measures. Additionally, different adaptive strategies appeared among beech seedlings when the same amount of water was distributed differently within each month. This indicates that the physiological response mechanisms of beech individuals are very complex and depend on several interacting parameters. For this reason, the choice of beech provenances for translocation and use in afforestation or reforestation projects should consider the small scale ecotypic diversity of the sp
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- 2019
34. The relationship between vegetation and modern pollen assemblages on Mount Paggeo (NE Greece)
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López Sáez, José Antonio [0000-0002-3122-2744], Papageorgiou, Aristotelis C [0000-0001-6657-7820], Abel Schaad, Daniel [0000-0003-3915-8342], Lespez, Laurent [0000-0003-3256-1999], Glais, Arthur, Papageorgiou, Aristotelis C, Tsiripidis, Ioannis, Abel Schaad, Daniel, López Sáez, José Antonio, Lespez, Laurent, López Sáez, José Antonio [0000-0002-3122-2744], Papageorgiou, Aristotelis C [0000-0001-6657-7820], Abel Schaad, Daniel [0000-0003-3915-8342], Lespez, Laurent [0000-0003-3256-1999], Glais, Arthur, Papageorgiou, Aristotelis C, Tsiripidis, Ioannis, Abel Schaad, Daniel, López Sáez, José Antonio, and Lespez, Laurent
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In this study, we investigated the relationship between vegetation and modern-pollen rain along the elevational gradient of Mount Paggeo. We apply multivariate data analysis to assess the relationship between vegetation and modern-pollen rain and quantify the representativeness of forest zones. This study represents the first statistical analysis of pollen-vegetation relationship along an elevational gradient in Greece. Hence, this paper improves confidence in interpretation of palynological records from north-eastern Greece and may refine past climate reconstructions for a more accurate comparison of data and modelling. Numerical classification and ordination were performed on pollen data to assess differences among plant communities that beech (Fagus sylvatica) dominates or co-dominates. The results show a strong relationship between altitude, arboreal cover, human impact and variations in pollen and nonpollen palynomorph taxa percentages.
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- 2016
35. A spreadsheet that calculates primer concentration in the final PCR reaction
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Papageorgiou, Aristotelis C.
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- 2018
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36. Adaptive diversity of beech seedlings under climate change scenarios
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Varsamis, Georgios, primary, Papageorgiou, Aristotelis C, additional, Merou, Theodora, additional, Takos, Ioannis, additional, Malesios, Chrisovalantis, additional, Manolis, Apostolos, additional, Tsiripidis, Ioannis, additional, and Gailing, Oliver, additional
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- 2019
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37. GENETIC DIVERSITY AND SPATIAL STRUCTURE OF THE IMPERILED EUROPEAN POPULATION OF Malus trilobata IN GREECE.
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BALASKA, Konstantina, ADAMIDIS, George C., VARSAMIS, Georgios, PAPALAZAROU, Kyriaki, KARANIKOLA, Paraskevi, MANOLIS, Apostolos, KARAPETSAS, Athanasios, ELIADES, Nicolas-George, SANDALTZOPOULOS, Raphael, PAPAMATTHAIAKIS, Nikolaos, POIRAZIDIS, Kostas, KORAKIS, Georgios, and PAPAGEORGIOU, Aristotelis C.
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GENETIC variation ,ENDANGERED species ,BEE behavior ,MICROSATELLITE repeats ,FORAGING behavior ,APPLES ,POLLINATORS - Abstract
Copyright of Genetika (0534-0012) is the property of Serbian Genetics Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2021
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38. Adaptive diversity of beech seedlings under climate change scenarios
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Varsamis, Georgios, primary, Papageorgiou, Aristotelis C, additional, Merou, Theodora, additional, Takos, Ioannis, additional, Malesios, Chrisovalantis, additional, Manolis, Apostolos, additional, Tsiripidis, Ioannis, additional, and Gailing, Oliver, additional
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- 2018
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39. Modelling site quality and individual-tree growth in pure and mixed Pinus brutia stands in north-east Greece
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Palahí, Marc, Pukkala, Timo, Kasimiadis, Dimitrios, Poirazidis, Konstantinos, and Papageorgiou, Aristotelis C.
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- 2008
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40. Adaptive and non-adaptive traits in fir populations
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Drouzas, Andreas D., Papageorgiou, Aristotelis C., Scaltsoyiannes, Apostolos, and Panetsos, Konstantinos P.
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The relation between the performance in adaptive traits and the genetic differentiation and variability patterns was examined in fir populations from Greece. In particular, nine fir populations growing in a provenance-test plantation located in central Greece, within the distribution range of the species, were used. The places of origin of the populations cover the range of the fir species distribution in Greece. Four of them represent places where the distribution is continuous and the other five occur in sites of an island-type distribution. The growth and survival rates were measured, and compared to the results taken by analyzing isoenzyme markers, as well as previously published results of morphological traits and terpene markers. Similar patterns of genetic differentiation were obtained by the analysis of isoenzyme markers, terpenes and morphological traits. The results indicated that the genetic differentiation observed is in concordance with the geographical distribution of the studied populations. Genetic diversity in isoenzyme markers as well as growth and survival rates were lower in isolated populations originating from marginal areas. Implications for conservation and breeding are discussed.
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- 2013
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41. Refugia and postglacial movement of beech in Greece
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Papageorgiou, Aristotelis C., Seraphim Hatziskakis, Tsiripidis, Ioannis, and Finkeldey, Reiner
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Beech has a broad European expansion and builds its southern most populations in Greece. Three polymorphic cpDNA microsatellite primers were used to describe the variation patterns of this tree in 40 populations. As many as 13 haplotypes were identified. Most of the variation was distributed among populations, but a considerable variation was also observed within some populations. No strong spatial structure was detected suggesting complex postglacial migration patterns. Possible explanations include the existence of several separated refugia in the region, the recolonization of mountains from different beech lineages and the formation of an introgression zone between two different beech subspecies in the broader area of Rodopi. This paper describes a presentation done at at the International Conference “Hot Spots of Ancient and Present genetic Diversity”, 17 - 20 June 2009, Sofia Bulgaria
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- 2013
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42. Patterns of genetic diversity of Fagus sylvatica L. in Rodopi Mountains of N.E. Greece
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Amaryllis Vidalis, Papageorgiou, Aristotelis C., Gailing, Oliver, and Finkeldey, Reiner
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The taxonomic classification of European beech has been lately subject of long scientific discussions. Genetic variation at AFLPs, chloroplast microsatellites and variation in leaf morphology have been analysed in four populations of F. sylvatica in the greek Rodopi Mountains. The analysis of morphological traits reveals differences between the western and the eastern part of the Rodopi Mountains. Moreover, high levels of haplotype diversity were observed within populations, while in central and western Europe no variation at cpDNA markers was detected. Clinal variation patterns have occurred at both morphological and molecular markers, with the variation increasing from the west to the east. Differentiation among populations was found, as expected, stronger at maternaly inherited cpDNA. The results obtained in this study, can be explained either by considering the greek Rodopi an introgression zone between subspecies sylvatica and subspecies orientalis or by the existance of a main glacial refugial area. These scenarios are not mutually exclusive. Poster presented during the Systematics Conference 2008, Göttingen, Germany.
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- 2013
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43. Loss of alleles due to resistance breeding: The case of cypress
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Papageorgiou, Aristotelis C., Xenopoulos, Sotirios, Finkeldey, Reiner, and Hattemer, Hans H.
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Individuals were selected for resistance against the imperfect fungus Seiridium cardinale Wag in six populations of Mediterranean cypress (Cupressus sempervirens L.). The collections of resistant clones and their base populations were surveyed at several isozyme gene loci. A total of 140 adult trees and of 109 clones were genotyped at six isozyme gene loci. The comparison yielded information on changes in genetic variation due to artificial selection. The genetic structure of most clone collections were similar to their base populations. Nevertheless, the number of rare alleles among the resistant clones had consistently decreased, although the numbers of investigated trees were similar to those of the clones. Possible implications for breeding strategies are discussed. Presentation during the international conference: "Dynamics and conservation of genetic diversity in forest ecosystems", Strasbourg, 2-5 December 2002
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- 2013
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44. Genetic implications of forest management in the Mediterranean
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Papageorgiou, Aristotelis C.
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respiratory system ,human activities - Abstract
Mediterranean forests are characterized by high complexity and biological richness at all levels. Genetic diversity of Mediterranean forest species has been found to be higher than the one of central and northern Europe. It is important for the maintenance of forest cover and the adaptation of forests under adverse conditions towards environmental change. Genetic diversity in the Mediterranean forests has been shaped by the climatic and the geographical history of the region. However, the most important factor influencing diversity is the presence of human in the region. The impact of forest management techniques and other human activities on genetic diversity is analyzed. Sustainable forest management in the Mediterranean should take this information in account and include measures for the maintenance of genetic diversity of forest species. This will then secure the long-term character of forestry in the region and the production of goods and services for the society. Presentation during the annual meeting of the Mediterranean Forest Externalities (MEDFOREX) project in Solsona, Catalunya, Spain 2004.
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- 2013
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45. Patterns of cpDNA diversity within a beech refugial area
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Mouratidis, Theodoros, Seraphim Hatziskakis, Eliades, Nicolas George, Tsiripidis, Ioannis, Finkeldey, Reiner, and Papageorgiou, Aristotelis C.
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fungi ,human activities - Abstract
This study aims at the description of beech postglacial movement within a mountain. The selected mountain Paggeo is isolated, while beech forms an altitudinal continuum for more than 1000m. Previous genetic studies have indicated the possible presence of a glacial refugium in the broader region. Seven sub-populations were sampled, in order to describe the structure of this refugial population. Three cpDNA microsatellite primer pairs were used. A high variety of haplotypes and a significant differentiation among sub-populations was detected. The results indicate that besides the refugial lineage on the north side of the mountain, two additional beech lineages have arrived from other refugia and occupied specific locations. Poster presented at the International Conference “Hot Spots of Ancient and Present genetic Diversity”, 17 - 20 June 2009, Sofia Bulgaria
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- 2013
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46. Genetic structure of open pollinated families and pollen clouds in cypress stands. Possible effects of single tree sampling
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Papageorgiou, Aristotelis C. and Hattemer, Hans H.
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The progenies and pollen clouds from two cypress stands with different genetic structures were analysed. The genetic structures among generations were compared. There were not large differences found in the allelic structures. However, the heterozygosity proportions have followed a certain differentiation trend, which is explained as an effect of single tree sampling. The possible influence of these effects on breeding and conservation measures is discussed.
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- 2013
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47. Mediterranean forest genetic diversity and adaptive conservation strategies
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Papageorgiou, Aristotelis C.
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Mediterranean forest genetic diversity and adaptive conservation strategies Genetic diversity and the genetic system of a forest population Biodiversity is clearly classified at three levels (genes, species and ecosystems) in almost all conservation policy documents and strategies and the importance of its genetic component for the adaptation and survival of the other two components is broadly recognized. However, genetic diversity is usually a small part of global, regional and local biodiversity conservation plans and strategies, mainly due to the practical difficulty for its description and quantification. At the same time, a major misunderstanding occurs, as most stakeholders and several scientists consider an expensive laboratory genetic inventory as the primary necessity prior any conservation decision and frequently consider the genes recorded in the laboratories as the target for future conservation activities. However, the role of genetic research in conservation is not to assess genetic variation per se, but rather to describe the parameters that shape genetic diversity, to identify threats, to model scenarios and to monitor the results of conservation measures. More than maintaining genetic diversity of species in an ecosystem, it is important to maintain the mechanisms that produce high levels of diversity and connect subsequent generations with each other. This “genetic system” includes all evolutionary forces that act on a certain forest population and its function secures adaptability in the future. Mediterranean forest genetic diversity and climate change Mediterranean forests are characterized by high biological diversity at all levels. Mediterranean populations of tree species having a broader European expansion are genetically more diverse than populations located in northern latitudes. Populations and species often have a patchy distribution and are highly differentiated. At the same time, several species have a large and extensive distribution over different environments. The reasons for this genetic richness are the mountainous relief that forces species to adopt under different environmental conditions, the geographical location of the Mediterranean basin that allows migration between continents and the existence of important glacial refugia. While Mediterranean forests are rich in terms of genetic diversity, at the same time they are highly endangered due to the pressure of human activities since thousands of years. Furthermore, climate change scenarios show that the Mediterranean basin will suffer most from global warming and that the forests of the region will face severe survival problems. Climate change is expected to have direct impact on forests in the Mediterranean, where trees will need to survive under severe environmental conditions and their populations will be forced to react evolutionary and adapt or migrate. Yet, some indirect impacts can act faster and have more significant effects on forest populations; change of climatic conditions will probably cause wildfires and large outbreaks of insects and disease. At the same time, social and economic changes caused by climate change can increase pressures on forests. Deforestation will lead to extinction of rare species having a small expansion. Tree species with larger distribution range will lose valuable populations and their locally adopted genetic structures. At the same time, when parts of a species range will be missing, fragmentation will occur, which will gradually lead to loss of diversity and extinction. Tree populations having initially high levels of genetic diversity may adapt under the new climatic conditions. Yet, due to severity of the climate change, populations are expected to reduce their size and density, where genetic diversity can be reduced due to stochastic events, drift or inbreeding. At the same time, tree populations will need to specialize in the new conditions so much, that the genetic diversity in total and the adaptability in future changes will decline. Climate change may also shift the limits of geographical range of plants, as it happened during the interglacial periods of the past. Populations that manage to migrate through seeds to the north or to move higher on the mountains experience founder effects and bottlenecks, as only a sample of their initial genetic pool is represented in the new populations. This can lead to loss of genetic diversity and future adaptability. However, it seems that migration will not be easy for plants in the Mediterranean, since human settlements, infrastructure and activities have already fragmented the natural areas and it seems unlikely that seeds will be able to spread gradually to new directions. Furthermore, migration of plants is a very slow process and the expected changes of climatic conditions in the Mediterranean will be rapid, leaving not enough time for natural evacuation of plant populations. Adaptive conservation and management strategies We have reasons to worry about the effects of climate change on Mediterranean forest populations, but at the same time we hope that the high genetic diversity of these populations will manage to lead to new adaptations, as it happened with some of these species in the past. Since deforestation is not an option and migration is rather problematic, we should focus how to develop efficient conservation and adaptive management strategies for the Mediterranean forests. Priority in such strategies should be the maintenance and the enhancement of the function of the genetic system that secures the transfer of genetic diversity from one generation to the other and allows evolution to take place. Strategies for adaptive conservation and management of Mediterranean forests can take place in situ or ex situ. In situ strategies receive an increased attention, as they are more dynamic and allow the forest populations to evolve on site. As far as managed forests are concerned, most management approaches in the Mediterranean are imported from Central Europe, where forestry tradition is much older. These plans need to be adjusted to the Mediterranean conditions, to extend the targeted marketed and non-marketed values and to include all types of wild terrestrial ecosystems, not only productive forests in terms of timber. Emphasis should be given in the avoidance of measures that disturb the genetic system of forest populations. In order to secure pollen and seed movement, fragmentation of forests and low forest density should be avoided. Connectivity between forests should be maintained or restored. Restoration activities should focus in the protection of natural regeneration and where planting occurs, the used material should derive from local seed. Besides management, climate refugia and primary forests should be given priority for protection, mainly through networks of connected protected areas, including the main forest species and their ecotypes. However, even the best adaptive management strategies will not be able to prevent the loss of species or populations that will not be able to adapt. For this reason, we need to develop ex situ measures for the maintenance of genetic diversity. Frequent and representative collections of seed for the main and most threatened forest tree species should be prioritized. These can be maintained in gene banks, plantations and can contribute to the increase of the genetic base of natural populations through the creation of seed orchards that will provide variable seed for restoration activities. Other measures for conserving local adaptations would be to evacuate certain areas of the south and create copies of populations further in the north. This however is rather complicated, very expensive and can occur only for a few populations. It is probably better to promote management strategies for the existing forests that do not alter the dynamics of the genetic system and allow pollen and seed movement with natural regeneration. The development of adaptive management and conservation strategies needs effort and collaboration from different stakeholders. A new forest management approach, adjusted to the Mediterranean conditions and focused on the maintenance of natural processes, should be developed and implemented. At the same time, the importance of forests for the communities and settlements should be broadly recognized and an effective forest protection framework should be established. Mediterranean forests have accumulated an important adaptation potential through different geological and climatic periods. The best strategy against climate change is to protect and manage them, in a way that the adaptation mechanisms will continue their function. Presented during the IUCN / WWF workshop on “Adaptation to climate change in Mediterranean forest conservation and management” Athens, April 14-16 2008.
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- 2013
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48. Genetic diversity of beech in Greece
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Papageorgiou, Aristotelis C., Tsiripidis, Ioannis, and Seraphim Hatziskakis
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fungi ,human activities - Abstract
Beech covers a broad range of mountains in central and northern Greece. The diversity of the species in leaf morphology and cpDNA patterns is presented in this study, using a representative sample of 40 populations. Leaf morphology is strongly influenced by environmental factors. Most of the cpDNA variation was distributed among populations, but a considerable variation was also observed within populations. The total diversity was very high for all regions. While there was an indication for phylogenetic subdivision, no strong spatial structure was detected suggesting complex postglacial migration patterns. Possible scenarios explaining this diversity pattern include the existence of several separated refugia in the region, the recolonization of mountains from different beech lineages and the formation of an introgression zone between two different beech subspecies in the eastern part of the country. Furthermore, diversity studies in two specific mountain regions confirm these scenarios and reveal the complex migration routes of different beech lineages. Presentation at a COST Action E52 Working Group meeting, "Evaluation of the Genetic Resources of Beech for Sustainable Forestry", Thessaloniki / Greece, May 5th-7th, 2009.
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- 2013
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49. The genetic component of biodiversity in forest ecosystems
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Papageorgiou, Aristotelis C.
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What is the position of genetic diversity in biodiversity texts and strategies? How does this apply to forest biodiversity and what can be done manage forests sustainably? The importance of forest genetic diversity as a component of biodiversity.
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- 2013
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50. Genetic diversity as a parameter for managing agroforestry systems
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Papageorgiou, Aristotelis C.
- Abstract
This is a pdf file of a lecture held during the Summer School "Mediterranean Agroforestry and its role in thePresent Environmental Challenges", Athens, Greece, 4 – 15 July 2011. This lecture is at graduate level, prepared for a non-genetic audience. For this reason, a basic introduction in population genetics and evolution is done in the first part. The second part includes suggestions for management and conservation guidelines for agroforestry systems. This file contains some useful ideas of how to address the need for conservation and management of "genetic systems" of natural populations. In general it addresses the importance of genetic diversity in nature management.
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- 2013
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