@article{2-s2.0-85199042038,

title = {Taxonomic and functional diversity along successional stages on post-coalmine spoil heaps},

author = { J. Bakr and A. Kompała-Bąba and W.M. Bierza and D. Chmura and A. Hutniczak and A. Błońska and T. Nowak and F. Magurno and A.M. Jagodziński and G. Woźniak},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85199042038&doi=10.3389%2ffenvs.2024.1412631&partnerID=40&md5=71c84c6da726e1ccb81cc6fbb5e1e183},

doi = {10.3389/fenvs.2024.1412631},

issn = {2296665X},

year  = {2024},

date = {2024-01-01},

journal = {Frontiers in Environmental Science},

volume = {12},

publisher = {Frontiers Media SA},

abstract = {Coal is the most abundant fossil fuel in Europe, but the excavation of hard coal has covered large areas with disposed rock waste, and turned the natural habitats into disturbed novel ecosystems with harsh conditions differ in time and space. To examine the spontaneous complex successional gradient, we studied a large number of post coalmine heaps in Upper Silesia, which differ in vegetation type and age. Cluster analysis based on plant community composition (367 species in total) separated all surveyed plots on coal mining spoil heaps with herbaceous vegetation from Late Stage (LS) forests aged 14–56 years. Furthermore, the herbaceous vegetation was sub-grouped to three stages: Initial Stage (IS) aged 2–5 years, Early Stage (ES) aged 3–8 years and Mid-Stage (MS) aged 5–12 years. MS vegetation was characterised by the highest species richness and diversity (47 and 2.79) compared to ES (30 and 2.18) and IS (9 and 1.6), but higher species number and a similar diversity index occurred in LS (37 and 2.81). Functional diversity (FD) and community weighted mean (CWM) of nine functional traits showed higher (23.1) functional richness, higher (0.72) functional divergence, higher (4.5) functional dispersion, and higher value (24.4) of Rao’s quadratic entropy in LS compared to those calculated from the first three stages. Species at the initial successional stage (IS) were characterised by lower canopy height, seed mass, higher lateral spread, and specific leaf area (SLA). Additionally, the lowest (0.22 mg CO2 per hour per square metre) soil respiration (Sr) rate was recorded from IS compared to (0.53; 0.82 and 1.00) from ES, LS and MS, respectively. The soil water content (SWC) was the most important factor affecting the soil respiration, while the soil temperature (St) did not follow the well-studied relationship between soil respiration and soil temperature. Our spatial and temporal analyses illustrated changes in plant community assembly processes in the course of spontaneous vegetation succession on post coalmine spoil heaps. The importance of trait mediated abiotic filtration in community assembly in initial-, early-, and mid-stages of succession with an increase in competitive exclusion at the late successional stage was emphasized. Copyright © 2024 Bakr, Kompała-Bąba, Bierza, Chmura, Hutniczak, Błońska, Nowak, Magurno, Jagodziński and Woźniak.},

note = {1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85136186350,

title = {Re-introduction of an extinct population of Pulsatilla patens using different propagation techniques},

author = { J. Żabicka and P. Żabicki and A. Słomka and E. Sliwinska and M. Jędrzejczyk-Korycińska and T. Nowak and G. Migdałek and M. Kwiatkowska and E. Kuta},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85136186350&doi=10.1038%2fs41598-022-18397-0&partnerID=40&md5=0d00afa7649e61dc3a97daaadda3fb14},

doi = {10.1038/s41598-022-18397-0},

issn = {20452322},

year  = {2022},

date = {2022-01-01},

journal = {Scientific Reports},

volume = {12},

number = {1},

pages = {14321-},

publisher = {Nature Research},

abstract = {The study focuses on the propagation of a rare and endangered plant species (Pulsatilla patens) to re-introduce an extinct population from calamine area in Southern Poland. The plants were propagated from seeds, rhizome cuttings, or regenerated in vitro from shoot tips, hypocotyls with roots or cotyledons of seedlings on Murashige & Skoog (MS) medium supplemented with 0.25 or 0.50 mg L−1 BAP (Benzylaminopurine) via direct and indirect organogenesis or somatic embryogenesis (SE). The most efficient micropropagation method was with shoot tips as an explant on MS + 0.25 mg L−1 BAP where 97% of the explants produced multiple shoots, mass SE was observed after transfer on ½ MS with 2% saccharose; 267 (35%) shoots rooted on ½ MS + 2% saccharose were acclimatized to ex vitro conditions. Flow cytometry revealed genome size stability of propagated plantlets. Low genetic differentiation between micropropagated plantlets and initial material was indicated by ISSR (Inter Simple Sequence Repeat) markers. Totally, 132 vigorous plantlets obtained on various pathways were introduced to the field plots in 2020; 30.33% survived the winter, and several reached the generative stage and flowered in the spring 2021. In next season (March/April 2022) the number of introduced plants decreased to 25% while the number of flowering and fruiting shoots in different clumps increased in some plots. This is the first report of successful re-introduction of the endangered P. patens based on micropropagation, rhizome cuttings, and seed germination. © 2022, The Author(s).},

note = {1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85133248581,

title = {Post-Extraction Novel Ecosystems Support Plant and Vegetation Diversity in Urban-Industrial Landscapes},

author = { G. Woźniak and D. Chmura and T. Nowak and B. Bacler-Zbikowska and L. Besenyei and A. Hutniczak},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85133248581&doi=10.3390%2fsu14137611&partnerID=40&md5=0ca6b24e21e405b751c8a9d5ddc46fbc},

doi = {10.3390/su14137611},

issn = {20711050},

year  = {2022},

date = {2022-01-01},

journal = {Sustainability (Switzerland)},

volume = {14},

number = {13},

publisher = {MDPI},

abstract = {Long-term exploitation of mineral resources has significantly changed the natural environment in urban-industrial landscapes. The changes on the surface of the extraction sites as a consequence of excavation of mineral resources provide specific mineral oligotrophic habitats on which plant species and thus vegetation can establish spontaneously. Some of these sites fulfill the prerequisites of novel ecosystems. This study was conducted on the spontaneous vegetation of post-extraction sites. Lists of species spontaneously covering these sites were prepared based on published data and our own records. This research revealed that species composition and vegetation types vary in time. These post-extraction novel ecosystems are also important for the presence of rare, endangered, and protected species noted in patches of different vegetation types. The variety of habitat conditions provided by these sites facilitates the occurrence of a wide spectrum of plants (both in terms of their socio-ecological origin and their ecological spectrum). This research proves how important these post-extraction novel ecosystems are for supporting plant and vegetation diversity in urban-industrial landscapes. Enhancing the biodiversity significantly increases the ecosystem services delivered by these sites and also the functioning of entire ecosystems. These natural processes on human habitats are essential in urban-industrial ecosystem landscape mosaics. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85127146318,

title = {Molecular and Cytogenetic Analysis of rDNA Evolution in Crepis Sensu Lato},

author = { M. Senderowicz and T. Nowak and H. Weiss-Schneeweiss and L. Papp and B.A. Kolano},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127146318&doi=10.3390%2fijms23073643&partnerID=40&md5=cfb490639901fb87f4504b18e6954abb},

doi = {10.3390/ijms23073643},

issn = {16616596},

year  = {2022},

date = {2022-01-01},

journal = {International Journal of Molecular Sciences},

volume = {23},

number = {7},

publisher = {MDPI},

abstract = {Although Crepis was the first model plant group in which chromosomal changes were considered to play an important role in speciation, their chromosome structure and evolution have been barely investigated using molecular cytogenetic methods. The aim of the study was to provide a better understanding of the patterns and directions of Crepis chromosome evolution, using comparative analyses of rDNA loci number and localisation. The chromosome base number and chromosomal organisation of 5S and 35S rDNA loci were analysed in the phylogenetic background for 39 species of Crepis, which represent the evolutionary lineages of Crepis sensu stricto and Lagoseris, including Lapsana communis. The phylogenetic relationships among all the species were inferred from nrITS and newly obtained 5S rDNA NTS sequences. Despite high variations in rDNA loci chromosomal organisation, most species had a chromosome with both rDNA loci within the same (usually short) chromosomal arm. The comparative analyses revealed several independent rDNA loci number gains and loci repositioning that accompanied diversification and speciation in Crepis. Some of the changes in rDNA loci patterns were reconstructed for the same evolutionary lineages as descending dysploidy. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.},

note = {4},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85115662928,

title = {Descending dysploidy and bidirectional changes in genome size accompanied crepis (Asteraceae) evolution},

author = { M. Senderowicz and T. Nowak and M. Rojek-Jelonek and M. Bisaga and L. Papp and H. Weiss-Schneeweiss and B.A. Kolano},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85115662928&doi=10.3390%2fgenes12091436&partnerID=40&md5=452ed52123cfdbc7f2e2f8b120fbcdcb},

doi = {10.3390/genes12091436},

issn = {20734425},

year  = {2021},

date = {2021-01-01},

journal = {Genes},

volume = {12},

number = {9},

publisher = {MDPI},

abstract = {The evolution of the karyotype and genome size was examined in species of Crepis sensu lato. The phylogenetic relationships, inferred from the plastid and nrITS DNA sequences, were used as a framework to infer the patterns of karyotype evolution. Five different base chromosome numbers (x = 3; 4; 5; 6; and 11) were observed. A phylogenetic analysis of the evolution of the chromosome numbers allowed the inference of x = 6 as the ancestral state and the descending dysploidy as the major direction of the chromosome base number evolution. The derived base chromosome numbers (x = 5; 4; and 3) were found to have originated independently and recurrently in the different lineages of the genus. A few independent events of increases in karyotype asymmetry were inferred to have accompanied the karyotype evolution in Crepis. The genome sizes of 33 Crepis species differed seven-fold and the ancestral genome size was reconstructed to be 1C = 3.44 pg. Both decreases and increases in the genome size were inferred to have occurred within and between the lineages. The data suggest that, in addition to dysploidy, the amplification/elimination of various repetitive DNAs was likely involved in the genome and taxa differentiation in the genus. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},

note = {3},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85110872738,

title = {Genotype-dependent mass somatic embryogenesis: a chance to recover extinct populations of Pulsatilla vulgaris Mill.},

author = { J. Żabicka and P. Żabicki and A. Słomka and M. Jędrzejczyk-Korycińska and T. Nowak and E. Sliwinska and A. Kapler and G. Migdałek and E. Kuta},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110872738&doi=10.1007%2fs11240-021-02074-7&partnerID=40&md5=0eddcf3dfc8a069ae4049999fccdd44e},

doi = {10.1007/s11240-021-02074-7},

issn = {01676857},

year  = {2021},

date = {2021-01-01},

journal = {Plant Cell, Tissue and Organ Culture},

volume = {146},

number = {2},

pages = {345-355},

publisher = {Springer Science and Business Media B.V.},

abstract = {Abstract: The paper presents a technique for micropropagation of endangered in Europe and extinct in Poland Pulsatilla vulgaris for ex situ conservation of the genetic resources. Genotype-dependent induction of somatic embryogenesis and rooting was revealed in series of two experiments (I and II) performed under the same experimental conditions. Shoot tips of seedlings were the best explants in both experiments and Murashige and Skoog (MS) medium supplemented with 0.25 or 0.5 mg L−1 BAP was suitable for induction of somatic embryos (SE) and adventitious shoots. Mass SE was obtained in experiment I after explants transfer on ½ MS (2% sucrose) + 0.45 mg L−1 B1 and extending culture to 2–3 months without passages. Rooting of adventitious shoots was a critical point. Out of seven rooting media used in experiment I, only two, ½ MS hormone free (2% sucrose) + 0.45 mg L−1 B1 or MS + 5 mg L−1 NAA + 3.76 mg L−1 B2 resulted in altogether 36.4% rooted shoots. In experiment II, somatic embryogenesis, rooting and acclimatization of adventitious shoots failed. Regenerated plantlets and seedlings converted from SE from experiment I were acclimatized to ex vitro conditions. Both genome size, determined by flow cytometry, and genetic diversity analyzed by ISSR markers, confirmed the compatibility of regenerants from experiment I with P. vulgaris initial seedlings and commercial cultivar. Regenerants obtained in experiment II differed genetically from the regenerants of experiment I and cultivar. Propagated in vitro tissues/organs (SE; adventitious shoots) of P. vulgaris could be a source of material for cryopreservation, artificial seed production and/or for acclimatization of regenerated plantlets and could be used for restoration of the extinct populations. Key Message: The micropropagation technique via organogenesis and somatic embryogenesis of endangered in Europe pasqueflower was developed as a tool for species recovery. The critical point is that somatic embryogenesis is genotype-dependent, which affects the repeatability of the experiments and also imposes applying molecular techniques to confirm the genetic fidelity of the regenerants with the initial material and other genotypes. © 2021, The Author(s).},

note = {1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84982659158,

title = {Arbuscular mycorrhizal fungi (AMF) root colonization dynamics of Molinia caerulea (L.) Moench. in grasslands and post-industrial sites},

author = { W. Bąba and A. Błońska and A. Kompała-Bąba and Ł. Małkowski and B. Ziemer and E.M. Sierka and T. Nowak and G. Woźniak and L. Besenyei},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84982659158&doi=10.1016%2fj.ecoleng.2016.07.013&partnerID=40&md5=a9f2bf346f91876bbbed262b1df90348},

doi = {10.1016/j.ecoleng.2016.07.013},

issn = {09258574},

year  = {2016},

date = {2016-01-01},

journal = {Ecological Engineering},

volume = {95},

pages = {817-827},

publisher = {Elsevier B.V.},

abstract = {The aims of this studies were: (i) to examine the influence of heavy metal content (Zn; Cd; Pb; Fe; Cu) and other physico-chemical soil parameters on the level of root colonization of Molinia caerulea and (ii) to relate root colonisation parameters and soil variables to Molinia caerulea abundance in two contrasting habitats (grasslands and heavy metal contaminated sites). The sites differ significantly in terms of bio-available heavy metal contents, particularly Zn (34 times more than grasslands), soil texture, CaCO3, organic matter (LOI%), Mg and nitrate content. Principal Component Analysis showed the strong negative correlations between frequency of mycorrhization (F), arbuscular abundance (A%) and intensity of root cortex colonisation (M%) and concentration of bio-available Zn and Cd. Moreover, no positive correlation between root colonization of Molinia and its abundance was found. The frequency of mycorrhization of root fragments (F%) was only slightly different between these two habitats, whereas the intensity of root cortex colonisation (M%) and relative arbuscular abundance (A%) were significantly lower (3 and 4 times respectively) on the post-industrial sites. The bioavailable Zn content in the substratum of post-industrial sites was strongly negatively correlated with species richness, Shannon diversity index and Evenness. In contrast, these relationships were not statistically significant in grasslands. Based on obtained results we could draw a model of possible relationships between root colonization of Molinia, HM content and Molinia abundance on grasslands and post-industrial sites. Bioavailable Zn content in the soil is a one of main factors influencing the Molinia community diversity. In the grasslands, lower amounts of bioavailable Zn, resulted in higher species richness (R) and species diversity (H) which in turn lead to higher root colonization. On the other hand, on the post-industrial sites, the elevated bioavailable Zn content strongly decreases the plant species richness (R) and species diversity (H) and this caused the decline in root colonization parameters. The low species richness on Zn-polluted sites allowed Molinia to reach higher abundance since the competition with other species is reduced. © 2016},

note = {13},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84926451096,

title = {The influence of invasive Fallopia taxa on resident plant species in two river valleys (southern Poland)},

author = { D. Chmura and B. Tokarska-Guzik and T. Nowak and G. Woźniak and K. Bzdęga and K. Koszela and M. Gancarek},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84926451096&doi=10.5586%2fasbp.2015.008&partnerID=40&md5=6cf58643d127f6b3caad42501fee4951},

doi = {10.5586/asbp.2015.008},

issn = {00016977},

year  = {2015},

date = {2015-01-01},

journal = {Acta Societatis Botanicorum Poloniae},

volume = {84},

number = {1},

pages = {23-33},

publisher = {Polskie Towarzystwo Botaniczne},

abstract = {Riparian zones in two rivers in southern Poland were studied in terms of species composition and soil parameters in patches dominated by three knotweed taxa (Fallopia japonica; F. sachalinensis and the hybrid F. ×bohemica). The main purpose was to detect any differences in species diversity, environmental conditions and in the impact of the three Fallopia spp. on resident species. Fieldwork was conducted in spring and summer in 30 invaded plots (in total 90 subplots). It was demonstrated that vegetation dominated by particular knotweed taxa differed in response to soil pH and ammonium, nitrate, and magnesium content. Fallopia spp. (living plants and necromass) had a stronger negative impact on the cover and species diversity of the resident species in summer in comparison with spring. Vegetation patches differed significantly in species composition in relation to the knotweed taxa present. These differences may be the consequence of the differentiated biotopic requirements of Fallopia taxa and the coexisting plants, or to the different impact of the knotweed taxa on the resident species. © The Author(s) 2015.},

note = {18},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84896716149,

title = {The importance of land use type in Fallopia (Reynoutria) Japonica invasion in the suburban environment},

author = { D. Chmura and P. Nejfeld and M. Borowska and G. Woźniak and T. Nowak and B. Tokarska-Guzik},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896716149&partnerID=40&md5=22a992a2981ec6e5e99d6b6a0ade8f8c},

issn = {15052249},

year  = {2013},

date = {2013-01-01},

journal = {Polish Journal of Ecology},

volume = {61},

number = {2},

pages = {379-384},

abstract = {In total 273 stands of the invasive species Fallopia (Reynoutria) japonica in Oświęcim valley (southern Poland) were examined, in terms of cover, area, abundance, height and width of shoots, and presence of coexisting species. F. japonica occurred more frequently in wastelands and was the rarest in forests. Statistical analyses revealed some significant differences among habitats with particular traits. The most abundant populations, occupying the largest area, were recorded in wetlands and along railway lines. Populations were very diverse in terms of their percentage of flowering shoots within a particular type of habitat, however, the highest percentage was again observed in wetlands and along railways. In forests, gardens and in wastelands the contribution of flowering shoots was lower. The presence of accompanying species in the studied populations was generally low, most frequently stands of F. japonica were mono-specific with a slightly higher cover of accompanying species being recorded in F. japonica populations in forests. The highest proportion of the tallest shoots within a patch of F. japonica was observed in wetlands, while the lowest was in wastelands and in railways. The individuals with the thickest shoots were present in forests and wetlands and the thinnest in wastelands. Despite the simplified nature of the data collection the study demonstrated that F. japonica is more vigorous and forms larger stands occupying larger areas in some of the analyzed habitats. The study showed that in man-made habitats the considered species has favourable conditions for its development and further spread and this is of concern to conservationists and land managers as it can pose a threat to native biodiversity.},

note = {11},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84893570430,

title = {Bromus secalinus (Poaceae) in the Silesian Upland - Dynamic tendencies in the light of 17 years of observations [Bromus secalinus (Poaceae) na wyżynie Śla̧skiej - Tendencje dynamiczne w świetle 17 lat obserwacji]},

author = { B. Węgrzynek and T. Nowak},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893570430&partnerID=40&md5=d89a094a33cfa52ce68ccd8ecf7edd3c},

issn = {1640629X},

year  = {2013},

date = {2013-01-01},

journal = {Fragmenta Floristica et Geobotanica Polonica},

volume = {20},

number = {2},

pages = {259-266},

abstract = {The paper presents results of 17-year studies on Bromus secalinus L. in the Silesian Upland (S Poland). The species has been listed as vulnerable in Poland and included in the Polish "red list". However, some authors have reported recently B. secalinus as quite frequent and abundant or even an expansive weed in some regions of the country. Results of investigations carried out by authors in the Silesian Upland confirmed that the occurrence of B. secalinus has increased but its expansion is not observed here. Moreover, the participation of B. secalinus in arabie field communities of the area studied is presented.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-80655145850,

title = {Distribution patterns and habitat preferences of mountain vascular plant species in the Silesian uplands (Southern Poland)},

author = { T. Nowak and A. Urbisz and P. Kapusta and B. Tokarska-Guzik},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-80655145850&partnerID=40&md5=3a4c7e50872f8edc695278f8353ea925},

issn = {15052249},

year  = {2011},

date = {2011-01-01},

journal = {Polish Journal of Ecology},

volume = {59},

number = {2},

pages = {219-234},

abstract = {The descent of some mountain species into the lowlands is an interesting phenomenon in plant geography and ecology. The main purpose of the present study is to update the list of mountain species for the Silesian Uplands and to provide a synthesis of the knowledge accumulated to date on the habitats for their occurrence, a possible origin and their distribution patterns. In the present study, both the authors' own records and those obtained by other researchers have been used: published, unpublished and herbarium records, and assembled in a form compatible with the Atlas of distribution of vascular plants in Poland (ATPOL) in the ATPOL-Silesia database). A list of mountain species present in the study region (approximately 4000 km2) is provided in relation to their altitudinal groups. For each species, information about its affiliation to geographical elements and the type of habitats in which it has occurred is recorded. The distribution of mountain species in the Silesian Uplands has been investigated by mapping the species onto a grid of 2 × 2 km squares (1040 in total). For ATPOL squares, containing at least one mountain species (N = 647), CORINE land cover data were obtained and used in explaining the distribution of mountain species composition and richness. In the vascular flora of the Silesian Uplands 76 mountain taxa have been noted, including 2 submontane, 41 montane, 1 subalpine and 32 multizonal species. The list of mountain species has been supplemented with Lonicera nigra and Cirsium erisithales. Many mountain species occurring in the Silesian Uplands have localities distributed throughout the whole region and thus they do not represent any particular type of range. Some species show certain patterns of distribution associated with local habitat conditions. Stands of the montane species are concentrated mainly in the western part of the Silesian Uplands, while the multizonal species are concentrated in the eastern and central part of the study area. Most of the mountain species occur in natural habitats, in particular in broadleaved woodlands, even when they have been degraded. However, some of the species prefer strongly degraded habitats, in particular sand- and clay-pits, quarries and industrial spoils which has been confirmed by multivariate (RDA) analysis. Discussing the possible origin of the mountain species in the Silesian Uplands one can consider migration routes from two directions: from the Sudety Mts. or from the Carpathian Mts. (located approximately 400 km south-west from a study area and 50-100 km south, respectively). Another possible explanation is that the species had a wider range during the glaciations and survived here in refugia.},

note = {6},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-70349507009,

title = {Cytogenetic studies of three European species of Centaurea L. (Asteraceae)},

author = { M. Dydak and B.A. Kolano and T. Nowak and D. Siwińska and J. Małuszyńska},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-70349507009&doi=10.1111%2fj.1601-5223.2009.02113.x&partnerID=40&md5=c0b00cf8092fcd68ff1b5bfae8a49d25},

doi = {10.1111/j.1601-5223.2009.02113.x},

issn = {00180661},

year  = {2009},

date = {2009-01-01},

journal = {Hereditas},

volume = {146},

number = {4},

pages = {152-161},

abstract = {Cytogenetic analysis of several populations of Centaurea jacea (2n = 4x = 44), C. oxylepis (2n = 4x = 44) and C. phrygia (2n = 2x = 22) was performed using flow cytometry, differential chromosome staining and FISH. In all species Arabidopsis-type telomeric repeats hybridized only to the terminal part of chromosomes. In C. phrygia three pairs and in C. oxylepis six pairs of chromosomes revealed the hybridization signals of 45S rDNA. Centaurea jacea showed polymorphism in the 45S rDNA loci number, five or six pairs of sites were observed. 5S rDNA loci were located in two pairs of chromosomes in C. phrygia. In C. jacea and C. oxylepis the number and position of 5S rDNA loci were the same: three pairs located interstitially and one terminally. The genome size of the diploid C. phrygia was established as 2.14 pg/2C. The genomes of tetraploid species were nearly two times larger and genome size polymorphism was observed among C. jacea populations. © 2009 The Authors.},

note = {27},

keywords = {},

pubstate = {published},

tppubtype = {article}

}