scholarly journals Morphometric characteristics of black poplar (Populus nigra L.) leaves in the area of Great War Island

2013 ◽  
pp. 93-108 ◽  
Author(s):  
Zoran Maksimovic ◽  
Mirjana Sijacic-Nikolic
Keyword(s):  
Natural Populations ◽  
Populus Nigra ◽  
Ex Situ ◽  
Great War ◽  
Morphometric Characteristics ◽  
Evolutionary Potential ◽  
Ecological Adaptability ◽  
Black Poplar ◽  
Starting Point ◽  
Conservation Of Genetic Resources

This paper presents the results of an analysis of the morphometric characteristics of the leaves of 14 test black poplar (Populus nigra L.) trees, from the region of Great War Island, indicating a satisfactory degree of intrapopulation genetic variability. The knowledge of the extent and nature of variability in natural populations is a starting point for the breeding and conservation of genetic resources of forest trees. To this end, it is necessary to begin with the implementation of appropriate measures of in situ and ex situ conservation that will enable long-term preservation and enhancement of the ecological adaptability and the evolutionary potential of the populations of black poplar on Great War Island.

scholarly journals Genetic structure of black poplar (Populus nigra L.) population in the area of Great War Island

Genetika ◽  
2014 ◽  
Vol 46 (3) ◽  
pp. 963-973 ◽  
Author(s):  
Zoran Maksimovic ◽  
Dijana Cortan ◽  
Vladan Ivetic ◽  
Mladenovic Drinic ◽  
Mirjana Sijacic-Nikolic
Keyword(s):  
Genetic Structure ◽  
Genetic Variability ◽  
Sustainable Use ◽  
Population Level ◽  
Mean Value ◽  
Populus Nigra ◽  
Fixation Index ◽  
Great War ◽  
Black Poplar ◽  
Starting Point

The genetic structure of black poplar (Populus nigra L.) populations in the area of Great War Island (GWI) was studied at the level of 30 genotypes, based on microsatellite molecular markers (SSR). Eleven polymorphic SSR loci were used for analysis of intarpopulation genetic variability. Observed and expected heterozygosity in studied population were high (0.70 and 0.82). The fixation index calculated for single locus ranged from -0.055 (PMGC_14) up to 0.424 (PMGC_2607), while the mean value was 0.143. Deviation from Hardy-Weinberg equilibrium (HWE) differed between single loci. Stabile genetic structure and satisfactory level of genetic variability that have been determined at the population level represent a good starting point for conservation and sustainable use of the available gene pool and further breeding of this species.

scholarly journals Conservation status of white poplar (Populus alba L.) and black poplar (Populus nigra L.) in the territory of Great War Island

2014 ◽  
pp. 169-180
Author(s):  
Mirjana Sijacic-Nikolic ◽  
Jelena Milovanovic ◽  
Marina Nonic ◽  
Zoran Maksimovic ◽  
Dijana Cortan
Keyword(s):  
Gene Pool ◽  
Forest Ecosystems ◽  
Conservation Status ◽  
Populus Nigra ◽  
Ex Situ ◽  
Great War ◽  
Populus Alba ◽  
White Poplar ◽  
Black Poplar

T he paper describes t he conservation status of white poplar (Populus alba L.) and black poplar (Populus nigra L.) in the territory of Great War Island. The activities of in situ and ex situ gene pool conservation have been defined in order to preserve and expand the populations of the above species, as carriers of complex wetland forest ecosystems.

scholarly journals Variability of morphometric characteristics of the leaves of European white elm from the area of Great War Island

2013 ◽  
pp. 57-69
Author(s):  
Jovana Devetakovic ◽  
Mirjana Sijacic-Nikolic
Keyword(s):  
Endangered Species ◽  
Gene Pool ◽  
Natural Populations ◽  
Great War ◽  
Morphometric Characteristics ◽  
Growing Stock ◽  
Rare And Endangered Species ◽  
Interpopulation Variability ◽  
Rare And Endangered ◽  
The Republic

The European White Elm (Ulmus effusa Willd.) is indicated as a rare and endangered species in the growing stock of the Republic of Serbia. In the area of Great War Island, its natural populations were reduced to 56 registered trees, which occur in three spatially isolated subpopulations. On the basis of the research conducted on the level of variability of adaptible morphometric characteristics of leaves from 14 selected test trees of European White Elm, it can be concluded that the degree of interpopulation variability is satisfactory, which is a good basis for the conservation of the available gene pool.

Genetic differentiation between clone collections and natural populations of European black poplar (Populus nigra L.) in turkey

2017 ◽  
Vol 13 (3) ◽  
Author(s):  
Asiye Ciftci ◽  
Hüseyin Karatay ◽  
Filiz Kücükosmanoğlu ◽  
Alptekin Karahan ◽  
Zeki Kaya
Keyword(s):  
Genetic Differentiation ◽  
Natural Populations ◽  
Populus Nigra ◽  
Black Poplar

scholarly journals Low effective population size and high spatial genetic structure of black poplar populations from the Oder valley in Poland

2021 ◽  
Vol 78 (2) ◽  
Author(s):  
Błażej Wójkiewicz ◽  
Andrzewj Lewandowski ◽  
Weronika B. Żukowska ◽  
Monika Litkowiec ◽  
Witold Wachowiak
Keyword(s):  
Genetic Structure ◽  
Genetic Resources ◽  
Population Size ◽  
Effective Population Size ◽  
Spatial Genetic Structure ◽  
Demographic History ◽  
River Valley ◽  
Ex Situ ◽  
Effective Population ◽  
Black Poplar

Abstract Context Black poplar (Populus nigra L.) is a keystone species of European riparian ecosystems that has been negatively impacted by riverside urbanization for centuries. Consequently, it has become an endangered tree species in many European countries. The establishment of a suitable rescue plan of the remaining black poplar forest stands requires a preliminary knowledge about the distribution of genetic variation among species populations. However, for some parts of the P. nigra distribution in Europe, the genetic resources and demographic history remain poorly recognized. Aims Here, we present the first study on identifying and characterizing the genetic resources of black poplar from the Oder valley in Poland. This study (1) assessed the genetic variability and effective population size of populations and (2) examined whether gene flow is limited by distance or there is a single migrant pool along the studied river system. Methods A total of 582 poplar trees derived from nine black poplar populations were investigated with nuclear microsatellite markers. Results (1) The allelic richness and heterozygosity level were high and comparable between populations. (2) The genetic structure of the studied poplar stands was not homogenous. (3) The signatures of past bottlenecks were detected. Conclusion Our study (1) provides evidence for genetic substructuring of natural black poplar populations from the studied river catchment, which is not a frequent phenomenon reported for this species in Europe, and (2) indicates which poplar stands may serve as new genetic conservation units (GCUs) of this species in Europe. Key message The genetic resources of black poplar in the Oder River valley are still substantial compared to those reported for rivers in Western Europe. On the other hand, clear signals of isolation by distance and genetic erosion reflected in small effective population sizes and high spatial genetic structure of the analyzed populations were detected. Based on these findings, we recommend the in situ and ex situ conservation strategies for conserving and restoring the genetic resources of black poplar populations in this strongly transformed by human river valley ecosystem.

scholarly journals Ex situ conservation of genetic resources of field elm (Ulmus minor Mill) and European white elm (Ulmus laevis Pall)

Genetika ◽  
2004 ◽  
Vol 36 (3) ◽  
pp. 221-227
Author(s):  
Jelena Aleksic ◽  
Sasa Orlovic
Keyword(s):  
Genetic Resources ◽  
Ex Situ Conservation ◽  
Ex Situ ◽  
In Vitro Production ◽  
Ulmus Minor ◽  
Conservation Of Genetic Resources ◽  
Ulmus Laevis ◽  
Vitro Production

Principles of the conservation of genetic resources of elms (Ulmus spp) do not differ fundamentally from the general principles accepted for the conservation of genetic resources of other common Noble Hardwoods. Efficient conservation can best be achieved through appropriate combination of in situ and ex situ methods, which have distinct advantages. Besides that, ex situ conservation is employed when emergency measures are needed for rare endangered populations and when populations are too small to be managed in situ (e.g. risks of genetic drift and inbreeding). The aim of our research is ex situ conservation of genetic resources of field elm {Ulmus minor Mill) and European white elm (Ulmus laevis Pall) through establishment of field genebanks. Sampling was conducted in one population of field elm and one population of white elm. Plant material (buds) from 8 trees of field elm and 10 trees of white elm was used for in vitro production of clones. Obtained clones will be used for establishment of field genebanks on the experimental estate of the Institute of Lowland Forestry and Environment.

scholarly journals Hyperparasitism in caves: bats, bat flies and ectoparasitic fungus

2018 ◽  
Vol 1 ◽  
Author(s):  
Katrine Jensen ◽  
Luísa Rodrigues ◽  
Thomas Pape ◽  
Anders Garm ◽  
Sergi Santamaria ◽  
...  
Keyword(s):  
Soft Tissues ◽  
Natural Populations ◽  
Common Species ◽  
Unique Case ◽  
Male And Female ◽  
Entire Life ◽  
Bat Flies ◽  
Starting Point ◽  
Bat Fly ◽  
Peculiar Case

Bat flies (Nycteribiidae) of the order Diptera are highly specialized bloodsucking ectoparasites living on bats. The life-cycle of the bat flies emphasizes their obligate relationship with their hosts as they spend almost their entire life on bats. Upon mating, the female bat fly carries the larvae internally until the 3rd-instar when it deposits the larvae on the ceiling of the roost occupied by bats. The larvae then form a puparium. After 3-4 weeks the adult bat fly emerges from the puparium and starts searching for a host bat to colonize. Some of these ectoparasitic bat flies themselves are infected with an ectoparasitic fungus of the genus Arthrorhynchus (Laboulbeniales). Ascospores of the fungi attach themselves to the cuticle of the bat fly and develop a very conspicuous haustorium that penetrates into the soft tissues from where it presumably extract nutrition from the hemolymph of the bat flies. This interaction converts the fungus into a hyperparasite. Both the parasite and hyperparasite are obligates and cannot live separate from their hosts. This peculiar case of hyperparasitism remains highly unknown. The bat flies were collected in caves of Portugal, in maternity and hibernation bat seasons, and in the autumn migration period. The most common species of cave-dwelling bat species in Portugal is Miniopterus schreibersii, frequently parasitized with Nycteribia schmidlii and Penicillidia conspicua bat flies. We have studied the prevalence of the Laboulbeniales of the genus Arthrorhynchus in natural populations of bat flies. The site and position of the fungus on male and female bat flies unveils the mechanism of fungal transmission among bat flies, indicating that it occurs during mating behavior. This study is the starting point towards the understanding of this unique case of fungus-insect-vertebrate hyperparasitism interaction. See Suppl. material 1.

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