Karolina Sobierajska
Polish Academy of Sciences
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Publication
Featured researches published by Karolina Sobierajska.
Aob Plants | 2012
Bouchra Douaihy; Karolina Sobierajska; Anna K. Jasińska; Krystyna Boratyńska; Tolga Ok; Àngel Romo; Nathalie Machon; Yakiv Didukh; Magda Bou Dagher-Kharrat; Adam Boratyński
This is a large scale investigation of morphological diversity in Juniperus excelsa excelsa. It offers complementary results to those obtained for the same populations using molecular markers. These two approaches are complementary and should be considered together in order to obtain a comprehensive view of the variability of J. excelsa excelsa.
Plant Systematics and Evolution | 2013
Anna K. Jasińska; Krystyna Boratyńska; Karolina Sobierajska; Àngel Romo; Tolga Ok; Magda Bou Dagher Kharat; Adam Boratyński
The main aim of the present study was testing the value of the morphological and anatomical characteristics of the needles in distinguishing Cedrus atlantica, C. libani and C. brevifolia. Nine populations were sampled in their natural habit and 25 characters were used to describe the variation of the brachyblast needles and to analyze the differences between species. The results indicated that morphological and anatomical needle characters provide valuable tools in discrimination of the taxa. The scored differences were statistically significant, as revealed in the Tukey’s t test, discrimination analysis and hierarchical analysis of variation. The results support treating C. libani, C. atlantica and C. brevifolia as independent species.
Plant Systematics and Evolution | 2013
Adam Boratyński; Anna K. Jasińska; Katarzyna Marcysiak; Małgorzata Mazur; Àngel Romo; Krystyna Boratyńska; Karolina Sobierajska; Grzegorz Iszkuło
Juniperus thurifera is an important component of woodland communities of dry sites within the West Mediterranean region and is characterised by a strongly disjunctive geographic range. Two subspecies were recognised, subsp. thurifera in Europe and subsp. africana in Africa. The aim of the study was the comparison of phenetic diversity to the pattern of AFLP geographic differentiation of the species described in the literature. The examination of phenetic diversity was based on the biometrical analysis of 17 populations using 12 morphological characters of cone and seed. The differences among populations were analysed using Student’s t test, analysis of discrimination, UPGMA agglomeration and hierarchical analysis of variance. The majority of morphological characters differentiated at a statistically significant level between populations and between J. thurifera subsp. thurifera and subsp. africana. Three groups of populations were detected using multivariate statistical analyses. The first, well separated, is subsp. africana, while the following two concern subsp. thurifera. The morphological differentiation of populations appeared similar to that described on the AFLP. The Gibraltar Straight appeared to be the most important barrier.
Plant Systematics and Evolution | 2014
Anna K. Jasińska; Krystyna Boratyńska; Monika Dering; Karolina Sobierajska; Tolga Ok; Àngel Romo; Adam Boratyński
The phenotypic differentiation of relic P. sylvestris in southern Europe and southwestern Asia was verified using thirty-two populations sampled from the Iberian Peninsula, Massif Central, Balkan Peninsula, Crimea and Anatolia. Twenty-one morphological and anatomical needle traits and 18 cone morphological characteristics were examined to describe the population diversity and differentiation. The needle characters were not correlated to those of cone. The differences between regions were significant based on 12 needle and 9 cone characteristics, suggesting spatial isolation. The differentiation between the Iberian and Anatolian populations was the highest, which indicates the isolation by distance. The high level of morphological differentiation was also found among Iberian populations, supporting the already known complex history of the species in that region. Populations within other regions were differentiated at lower levels; however, the West Anatolian populations differed morphologically from the eastern ones. The described pattern of morphological differentiation supports the idea of the long-lasting existence of P. sylvestris in the south-European and Anatolian mountain regions. To conserve this variation, seed transfer between regions in the forest economy should be restricted.
Tree Genetics & Genomes | 2013
Àngel Romo; Oriane Hidalgo; Adam Boratyński; Karolina Sobierajska; Anna K. Jasińska; Joan Vallès; Teresa Garnatje
Mediterranean junipers are of special ecological importance as key components of resource islands in semi-arid mountain ecosystems of the Mediterranean basin. The fragmentation of their habitat, which was primarily natural and driven by climatic drought conditions, is currently being aggravated by anthropogenic pressure. In the framework of this concern, the present work aims to contribute establishing a genomic profile of Juniperus in its western Mediterranean range, with a special emphasis placed on J. thurifera. DNA contents were assessed by flow cytometry in 43 populations of nine taxa within their Mediterranean range (first reports for J. navicularis, J. thurifera subsp. africana and J. thurifera subsp. thurifera). Chromosome numbers were determined by orcein staining in eight taxa (first counts for J. oxycedrus subsp. badia, J. phoenicea subsp. phoenicea, J. phoenicea subsp. turbinata, of 2n = 2x = 22, and for J. thurifera subsp. thurifera, of 2n = 4x = 44). Tetraploid cytotypes have been the only ones found in the 19 populations of J. thurifera studied, this being the first report of a Juniperus species exclusively polyploid. In J. thurifera, C-value does not respond to habitat fragmentation, in the same way that genetic diversity within populations was previously shown to be unaltered, suggesting that this factor has not had, at least to date, a significant impact on populations at genomic and genetic levels. Habitat fragmentation leads to deeply age-biased populations with a male-biased imbalanced sex ratio (lack of females), indicating an urgent need to improve regeneration within the populations of this species.
Botanical Journal of the Linnean Society | 2014
Adam Boratyński; Witold Wachowiak; Monika Dering; Krystyna Boratyńska; Katarzyna Sękiewicz; Karolina Sobierajska; Anna K. Jasińska; Małgorzata Klimko; Jose Maria Montserrat; Àngel Romo; Tolga Ok; Yakiv Didukh
Annals of Forest Science | 2012
Grzegorz Iszkuło; Yakiv Didukh; Marian J. Giertych; Anna K. Jasińska; Karolina Sobierajska; Janusz Szmyt
Dendrobiology | 2011
Grzegorz Iszkuło; Anna K. Jasińska; Karolina Sobierajska
Dendrobiology | 2008
Karolina Sobierajska; K. Boratynska
Botanical Journal of the Linnean Society | 2016
Karolina Sobierajska; Krystyna Boratyńska; Anna K. Jasińska; Monika Dering; Tolga Ok; Bouchra Douaihy; Magda Bou Dagher-Kharrat; Àngel Romo; Adam Boratyński