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1856 records – page 1 of 186.

[Genetic Variation, Population Structure and Differentiation in Scots Pine (Pinus sylvestris L.) from the Northeast of the Russian Plain as Inferred from the Molecular Genetic Analysis Data].

https://arctichealth.org/en/permalink/ahliterature272197
Source
Genetika. 2015 Dec;51(12):1401-9
Publication Type
Article
Date
Dec-2015
Author
A I Vidyakin
S V Boronnikiva
Yu S Nechayeva
Ya S Nechayeva
Ya V Prysimivskaya
I V Boboshina
Source
Genetika. 2015 Dec;51(12):1401-9
Date
Dec-2015
Language
Russian
Publication Type
Article
Keywords
Pinus sylvestris - genetics
Polymorphism, Genetic
Russia
Abstract
The DNA polymorphism in Pinus sylvestris from Severodvinsk, Upper Vetluga, and Vetluga-Vyatka populations, which were isolated earlier based on specific features of the geographic variation of allometric cone indices, was examined by the ISSR method. It was demonstrated that the Severodvinsk population of P. sylvestris differed from the chorologically adjacent Upper Vetluga population with respect to all of the examined genetic indices, and the Upper Vetluga population differed from the Vetluga-Vyatka population. It was suggested that the main the reason for the lack of statistically significant differences between Upper Vetluga and Vetluga-Vyatka samples of P. silvestris with respect to genetic variation indices (P95, H(E), n(a), n(e)) may be their formation based on the gene pools of two glacial refugia. It was demonstrated that the proportion of the interpopulation component of total genetic diversity (G(ST)), as calculated based on the ISSR marker polymorphism, reached a value of 0.488, which was an order of magnitude higher than the previous estimates obtained based on data from allozyme analysis. It was concluded that P. sylvestris cone allometric indices reflected the specificity of spatial population subdivision, like the genetic diversity and population genetic structure indices calculated based on ISSR-marker polymorphism. Population isolation and mapping based on two-step phenogenetic studies is suggested.
PubMed ID
27055300 View in PubMed
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[Genetic diversity of Besermyan based on mitochondrial DNA polymorphism].

https://arctichealth.org/en/permalink/ahliterature259303
Source
Genetika. 2013 Nov;49(11):1337-44
Publication Type
Article
Date
Nov-2013
Author
A N Grosheva
Yu V Shneider
I Yu Morozova
O V Zhukova
S Yu Rychkov
Source
Genetika. 2013 Nov;49(11):1337-44
Date
Nov-2013
Language
Russian
Publication Type
Article
Keywords
DNA, Mitochondrial - genetics
Humans
Polymorphism, Genetic
Population - genetics
Siberia
Abstract
The first data on mtDNA diversity in Besermyan, the Finno-Ugric ethnic group, related to Udmurts, are presented. An analysis of mtDNA polymorphism showed that Besermyan stood out from the other populations of Volga-Ural region due to the presence of a large proportion of the mongoloid component. The sample of Besermyan contained East Eurasian haplotypes not detected in ethnic populations of the Volga region and Cisurals, while they were detected in South Siberia, mostly among Turkic-speaking populations. An analysis of the genetic distances between Besermyan and the neighboring ethnic groups showed that Besermyan were distant from other populations of Volga-Ural region and close to Turkic-speaking populations of South Siberia. Thus, the data obtained favor the suggestion on the mixed Udmurto-Turkic origin of Besermyan.
PubMed ID
25470935 View in PubMed
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[Specific Features of Microsatellite Polymorphism in Two Species of Arabidopsis].

https://arctichealth.org/en/permalink/ahliterature272198
Source
Genetika. 2015 Dec;51(12):1391-400
Publication Type
Article
Date
Dec-2015
Author
O M Fedorenko
M V Zaretskaya
Source
Genetika. 2015 Dec;51(12):1391-400
Date
Dec-2015
Language
Russian
Publication Type
Article
Keywords
Arabidopsis - genetics
Microsatellite Repeats
Polymorphism, Genetic
Russia
Species Specificity
Abstract
The results of an analysis of microsatellite polymorphism in two closely related Arabidopsis species that differing by their crossing types are presented. Considerable genetic diversity was revealed in Arabidopsis thaliana populations located at the northern periphery of the species range (Karelia), which was not typical of self-pollinating species. Populations from the northern boundary of the species range in the basin of Lake Onega were found to be more polymorphic (P99% = 0.43; Hexp = 0.17) as compared to populations of the islands of Lake Ladoga, which are located approximately 300 km to the south (P99% = 0.39; Hexp = 0.15). It is suggested that the high population polymorphism of A. thaliana in the northern part of its range is most likely associated with hostile growing conditions and is the basis for the adaptation processes. A. thaliana populations are highly differentiated (G(ST) = 0.783), which is typical of inbred species. However, such a high interpopulation differentiation is probably due to the low level of gene flow. Specifically, five populations out of seven examined are located on the islands, i.e., are to some extent isolated. These great differences between A. thaliana populations in terms of polymorphism, as well as the high haplotype diversity, suggests postglacial colonization of the Karelian territory by many different ancestral forms. The participation of unique alleles of microsatellite loci with many dinucleotide repeats in the adaptive evolution of A. thaliana is discussed. A species population that is rare for Karelia, Arabidopsis lyrata ssp. petraea, is in complete isolation and, due to specific features of the microevolutionary processes in such populations, is characterized by the polymorphism level, which is low for outbred species (P99% = 0.64; Hexp = 0.16). Nevertheless, this population exists in Karelia for a long period of time, pointing to its successful adaptation to these conditions.
PubMed ID
27055299 View in PubMed
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Source
Curr Opin Plant Biol. 2007 Apr;10(2):162-7
Publication Type
Article
Date
Apr-2007
Author
Savolainen Outi
Pyhäjärvi Tanja
Author Affiliation
Department of Biology, FIN-90014, University of Oulu, Finland. outi.savolainen@oulu.fi
Source
Curr Opin Plant Biol. 2007 Apr;10(2):162-7
Date
Apr-2007
Language
English
Publication Type
Article
Keywords
Genome, Plant - genetics
Polymorphism, Genetic
Selection (Genetics)
Trees - genetics
Abstract
Forest trees in general are out-crossing, long-lived, and at early stages of domestication. Molecular evolution at neutral sites is very slow because of the long generation times. Transferring information between closely related conifer species is facilitated by high sequence similarity. At the nucleotide level, trees have at most intermediate levels of variation relative to other plants. Importantly, in many species linkage disequilibrium within genes declines within less than 1000 bp. In contrast to the slow rate of neutral evolution, large tree populations respond rapidly to natural selection. Detecting traces of selection may be easier in tree populations than in many other species. Association studies between genotypes and phenotypes are proving to be useful tools for functional genomics.
PubMed ID
17292660 View in PubMed
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[Genetic structure of the Russian populations of Pyrenophora tritici-repentis, determined by using microsatellite markers].

https://arctichealth.org/en/permalink/ahliterature289540
Source
Genetika. 2016 Aug; 52(8):885-94
Publication Type
Journal Article
Date
Aug-2016
Author
N V Mironenko
O A Baranova
N M Kovalenko
L A Mikhailova
L P Rosseva
Source
Genetika. 2016 Aug; 52(8):885-94
Date
Aug-2016
Language
Russian
Publication Type
Journal Article
Keywords
Basidiomycota - genetics
Genetic Loci
Microsatellite Repeats
Polymorphism, Genetic
Russia
Abstract
The population genetic structure of plant pathogenic fungus Pyrenophora tritici-repentis was examined using microsatellite (SSR) markers. According to the geographical origin of the pathogen populations, they were designated as North Caucasian (S, 33 isolates), northwest (Nw, 39), and Omsk (Om, 43). The populations were analyzed at the nine most polymorphic SSR loci, at which 75 alleles were identified. To characterize the genetic variation within and between populations, the AMOVA algorithm as implemented in the Arlequin v. 3.5 software program was used. The number of alleles per locus ranged from 5 to 12 and their sizes varied within the range from 180 to 400 bp. The mean gene diversity at SSR loci was high for all populations (H = 0.58–0.75). The populations were considerably different in the frequencies of individual alleles of the SSR loci. Most isolates in the populations were represented by unique haplotypes. The within-population variation of the isolates at molecular markers was 86.4%; among the populations, 13.6%. Substantial interpopulation differences were found between the Om and S (F st = 0.16) and between the Om and Nw (F st = 0.20) populations, whereas between the S and Nw populations, these differences were small (F st = 0.05). Thus, it was demonstrated that the population of P. tritici-repentis from Omsk oblast had the independent status of the geographical population; northwest and North Caucasian populations differed in the allelic diversity of SSR loci, and despite the low F st value (0.05), they also belonged to independent geographical populations.
PubMed ID
29368882 View in PubMed
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[Genetic structure of the Russian populations of Pyrenophora tritici-repentis, determined by using microsatellite markers].

https://arctichealth.org/en/permalink/ahliterature289698
Source
Genetika. 2016 Aug; 52(8):885-94
Publication Type
Journal Article
Date
Aug-2016
Author
N V Mironenko
O A Baranova
N M Kovalenko
L A Mikhailova
L P Rosseva
Source
Genetika. 2016 Aug; 52(8):885-94
Date
Aug-2016
Language
Russian
Publication Type
Journal Article
Keywords
Basidiomycota - genetics
Genetic Loci
Microsatellite Repeats
Polymorphism, Genetic
Russia
Abstract
The population genetic structure of plant pathogenic fungus Pyrenophora tritici-repentis was examined using microsatellite (SSR) markers. According to the geographical origin of the pathogen populations, they were designated as North Caucasian (S, 33 isolates), northwest (Nw, 39), and Omsk (Om, 43). The populations were analyzed at the nine most polymorphic SSR loci, at which 75 alleles were identified. To characterize the genetic variation within and between populations, the AMOVA algorithm as implemented in the Arlequin v. 3.5 software program was used. The number of alleles per locus ranged from 5 to 12 and their sizes varied within the range from 180 to 400 bp. The mean gene diversity at SSR loci was high for all populations (H = 0.58–0.75). The populations were considerably different in the frequencies of individual alleles of the SSR loci. Most isolates in the populations were represented by unique haplotypes. The within-population variation of the isolates at molecular markers was 86.4%; among the populations, 13.6%. Substantial interpopulation differences were found between the Om and S (F st = 0.16) and between the Om and Nw (F st = 0.20) populations, whereas between the S and Nw populations, these differences were small (F st = 0.05). Thus, it was demonstrated that the population of P. tritici-repentis from Omsk oblast had the independent status of the geographical population; northwest and North Caucasian populations differed in the allelic diversity of SSR loci, and despite the low F st value (0.05), they also belonged to independent geographical populations.
PubMed ID
29368882 View in PubMed
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[The genetic diversity of burbot (Lota lota L., 1758) of Western Siberia (the analysis of the mtDNA control region polymorphism)].

https://arctichealth.org/en/permalink/ahliterature289778
Source
Genetika. 2017 Feb; 53(2):214-22
Publication Type
Journal Article
Date
Feb-2017
Author
Yu Ya Khrunyk
V D Bogdanov
L E Yalkovskaya
A R Koporikov
S B Rakitin
P A Sibiryakov
A V Borodin
Source
Genetika. 2017 Feb; 53(2):214-22
Date
Feb-2017
Language
Russian
Publication Type
Journal Article
Keywords
Animals
DNA, Mitochondrial - genetics
Gadiformes - genetics
Polymorphism, Genetic
Siberia
Abstract
The genetic variability of burbot (Lota lota L., 1758) inhabiting the Ob-Irtysh and Taz river basins in Western Siberia has been studied based on the polymorphism of the hypervariable fragment of mtDNA control region (407 bp). The analysis of 134 fish samples revealed 30 haplotypes, 23 of which were new. Among haplotypes, previously detected in Eurasia and North America, EB30 was the most frequently found in Western Siberia (45.5% frequency). The results of our study are in agreement with previous research pointing to the genetic differentiation of two burbot subspecies, L. l. lota and L. l. maculosa, and indicate that burbot inhabiting the Ob-Irtysh and Taz river basins belong to the Eurasian-Beringian clade (nominative subspecies L. l. lota). However, a high genetic diversity of burbot in Western Siberia, along with a relatively high differentiation of burbot groups within studied territory, points to a regional specificity of burbot population.
PubMed ID
29372969 View in PubMed
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[Polymorphism of mitochondrial DNA in old believers from Siberia].

https://arctichealth.org/en/permalink/ahliterature265160
Source
Genetika. 2014 Jun;50(6):729-44
Publication Type
Article
Date
Jun-2014
Author
M A Gubina
V N Babenko
L D Damba
M N Ponomareva
N A Konovalova
M I Voevoda
Source
Genetika. 2014 Jun;50(6):729-44
Date
Jun-2014
Language
Russian
Publication Type
Article
Keywords
DNA, Mitochondrial - genetics
Haplotypes
Humans
Polymorphism, Genetic
Population - genetics
Siberia
Abstract
The polymorphism of mtDNA was examined in populations of Old Believers (n = 104) and Russians from Novosibirsk oblast (n = 270). Most of the haplogroups identified belonged to West Eurasian lineages. The frequencies of these haplogroups constituted 96.6% in Russians from Novosibirsk and 93.2% in Old Believers from Tyumen oblast. The populations examined were characterized by a high mtDNA diversity level (h = 0.98) compared to other population samples of Russians from Russia. Among the West Eurasian haplogroups, the most common (a frequency of more than 10%) were haplogroups H, U, J, and T, the proportion of which constituted 77.9% in Old Believers and 83.1% in Russians from Novosibirsk. The Mongoloid admixture in Russians (3.3%) and Old Believers (6.7%) was represented by haplogroups A, D, Z, and C, D, M*, respectively. Statistically significant differences (P
PubMed ID
25715465 View in PubMed
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Polymorphism and preadaptation of horses (Equus) of the mountains surrounding Lake Baikal in Pleistocene.

https://arctichealth.org/en/permalink/ahliterature280023
Source
Dokl Biol Sci. 2016 Mar;467(1):59-62
Publication Type
Article
Date
Mar-2016
Author
N P Kalmykov
Source
Dokl Biol Sci. 2016 Mar;467(1):59-62
Date
Mar-2016
Language
English
Publication Type
Article
Keywords
Adaptation, physiological - physiology
Animals
Horses - genetics
Lakes
Phylogeny
Polymorphism, Genetic
Siberia
Abstract
The first data on polymorphism and preadaptation of the Pleistocene horses in the mountains surrounding Lake Baikal are presented. It has been shown that disregard of intraspecific polymorphism leads to unreasonable ignoring of their diversity, phylogenetically false constructions, and incorrect interpretation of natural environment.
PubMed ID
27193876 View in PubMed
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The use of DNA SCAR markers for differentiation of Kamchatka mykiss (Parasalmo (Oncorhynchus) mykiss).

https://arctichealth.org/en/permalink/ahliterature259354
Source
Dokl Biol Sci. 2014 Mar;455(1):149-52
Publication Type
Article
Date
Mar-2014
Author
M N Melnikova
S D Pavlov
M V Shitova
Source
Dokl Biol Sci. 2014 Mar;455(1):149-52
Date
Mar-2014
Language
English
Publication Type
Article
Keywords
Animals
Far East
Genetic Speciation
Oncorhynchus mykiss - genetics
Phylogeography
Polymorphism, Genetic
Notes
Erratum In: Dokl Biol Sci. 2014 Jul;457(1):265
PubMed ID
24795194 View in PubMed
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1856 records – page 1 of 186.