Wyniki wyszukiwania

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Genetic differentiation between west and east european karyotypic groups of Sorex araneus (Soricomorpha) in Poland

100%

Moska M., Wierzbicki H., Strzala T., Mucha A., Jonkisz A.

Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine

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2014

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tom 17

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nr 2

2

Responses of plants to polluted with heavy metals environment: from embryology to genetic differentiation. The continuation of the research nitiated by Professor Romana Czapik

100%

Kwiatkowska M., Slomka A., Kuta E.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2016

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tom 58

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nr 1

3

Genetic characterisation of a domestic dog canis familiaris breed endemic to South African rural areas

100%

Greyling L. M., Grobler P. J., Van Der Bank H. F., Kotze A.

Acta Theriologica

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2004

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tom 49

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nr 3

Allozyme electrophoresis (horizontal starch gel and PAGE) and histochemical staining techniques were used to study the genetic composition of an endemic southern African domestic dogCanis familiaris Linnaeus, 1758, the Africanis breed. Genetic differentiation was analysed at 21 protein-coding loci. The results were compared to those for three other populations/breeds: representatives of established Western breeds, crossbred dogs of Western descent from rural areas in South Africa, and indigenous Saluki dogs from the Middle East. Nine polymorphic loci were found (Ak-1,-2, Ck, Per, Hb, Po-A-1 to-3 andPo-Tf). Two unique alleles at the Ck and Po-A-2 loci separated the Africanis breed from the other groups. There were also significant differences between Africanis and the other breeds in pair-wise comparisons of allelic frequencies at polymorphic loci. An assignment test, fixation index values, gene flow and genetic distance values indicated a closer genetic association between the Africanis and Saluki breeds than with dogs of Western origin. This finding supports archaeological evidence that the endemic Africanis breed was introduced from the Middle East into Africa thousands of years ago, and not through later western influences. The average heterozygosity ranged from 0.106–0.15, with least heterozygosity in the Africanis and most in the rural crossbred group. The percentage of polymorphic loci, the mean number of alleles per locus (biologically more significant than heterozygosity), and conformation of genotypes to Hardy-Weinberg proportions showed no evidence of recent loss of genetic diversity in Africanis. Genetic differentiation and support of archaeological evidence by genetics indicate that the endemic southern African domestic dog breed is unique.

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Genetic differences among several species of Tricladida from the relict Lake Ohrid as revealed by enzyme electrophoresis

100%

Sywula T., Krstanovski Z., Tasevska O., Sell J., Kretowicz T.

Folia Biologica

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2003

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tom 51

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nr 1-2

5

Porownanie pieciu miar zroznicowania genetycznego polskich odmian pszenicy ocenianych na podstawie danych z analiz markerow mikrosatelitarnych

84%

Bocianowski J., Stepien L.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

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2006

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nr 242

27-32

6

Ocena zroznicowania genetycznego i zawartosci neurotoksyny beta-ODAP w wybranych gatunkach z rodzaju Lathyrus

84%

Pankiewicz K., Rybinski W.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

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2008

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nr 250

287-295

7

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Phylogenetic analysis and genetic structure of new isolates of Tomato mosaic virus in Iran

84%

Rakhshandehroo F., Hashemi S. S., Shahraeen N.

Journal of Plant Protection Research

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2018

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tom 58

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nr 1

The present report describes the new occurrence of Tomato mosaic virus (ToMV) in cabbage, bean and Malva neglecta plants in Iran. In this study, sequence analyses of a partial RNA dependent RNA polymerases (RdRp) and complete movement protein (MP) and the coat protein (CP) nucleotide sequences of three new ToMV isolates collected from major crop fields in Iran revealed low genetic variation of RdRp gene compared to the CP and MP genes. The different topologies of the phylogenetic trees constructed, using available open reading frame (ORF1), ORF2 and ORF3 sequences from ToMV isolates, indicated different evolutionary constraints in these genomic regions. Statistical analysis also revealed that with the exception of CP other tested ToMV genes were under negative selection and the RdRp gene was under the strongest constraints. According to the phylogenetic tree it can be inferred from the nucleotide sequences of the complete CP and MP genes, that isolates from Iran and Egypt formed separate groups, irrespective of host origin. However, isolates clustered into groups with correlation to geographic origin but not the host. Analysis of the Ks*, Z* and Snn values also indicated genetic differentiation between ToMV populations. The Tajima’s D, Fu and Li’s statistical values were significantly negative for the RdRp gene of the Asian population which suggests the sudden expansion of ToMV in Asia. Taken together, the results indicate that negative selection and genetic drift were important evolutionary factors driving the genetic diversification of ToMV.

8

Genetic differences between wild and hatchery populations of Diplodus sargus and D. vulgaris inferred from RAPD markers: implications for production and restocking programs design

84%

Pereira J. C., Lino P. G., Leitao A., Joaquim S., Chaves R., Pousao-Ferreira P., Guedes-Pinto H., Neves d. S. M.

Journal of Applied Genetics

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2010

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tom 51

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nr 1

67-72

Restocking and stock enhancement programs are now recognized as an important tool for the management of fishery resources. It is important, however, to have an adequate knowledge on the genetic population structure of both the released stock and the wild population before carrying out such programs. In this study, random amplified polymorphic DNA (RAPD) markers were applied to assess genetic diversity and population structure of wild and hatchery populations of the white seabream Diplodus sargus and the common two-banded seabream D. vulgaris (Sparidae). The estimated values for intrapopulation genetic variation, measured using the percentage of polymorphic loci (%P), Shannon index (H’), and Nei’s gene diversity (h), showed high values for all populations. The percentage of genetic variation within D. sargus and D. vulgaris populations, based on coefficient of gene differentiation, reached 82.5% and 90% of the total genetic variation, respectively. An undeniable decrease in genetic variation was found in both hatchery populations, particularly in D. sargus, compared to the wild ones. However, the high values of variation within all populations and the low levels of genetic variation among populations did not indicate inbreeding or depression effects, thus indicating a fairly proper hatchery management. Nevertheless, the results of this study highlight the importance of monitoring the genetic variation of hatchery populations, particularly those to be used in restocking programs. The creation of a genetic baseline database will contribute to a more efficient conservation management and to the design of genetically sustainable restocking programs.

9

Random forest assessment of correlation between environmental factors and genetic differentiation of populations: Case of marine mussels Mytilus

84%

Kijewski T., Zbawicka M., Strand J., Kautsky H., Kotta J., Ratsep M., Wenne R.

Oceanologia

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2019

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tom 61

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nr 1

10

A molecular survey of Paramecium dodecaurelia [Ciliophora, Protozoa] strains from a single pond

84%

Przybos E., Tarcz S., Surmacz M.

Acta Protozoologica

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2008

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tom 47

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nr 2

161-171

11

Intraspecies differentiation of Paramecium triaurelia. I. Strains from Spain

84%

Przybos E.

Folia Biologica

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1995

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tom 43

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nr 1-2

12

Genetic differences between two Polish populations of Pinus uliginosa, compared to P. sylvestris and P. mugo

84%

Lewandowski A., Samocko J., Boratynska K., Boratynski A.

Dendrobiology

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2002

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tom 48

Genetic differences between two populations of P. uliginosa from Batorów and Węgliniec were assessed on the basis of 15 allozyme loci. The level of genetic differentiation between them was also compared with genetic differences among the three closely related pine taxa: P. uliginosa, P. sylvestris and P. mugo. A high level of genetic variation was found in both populations of P. uliginosa. The average (Na) and effective (Ne) numbers of alleles per locus amounted respectively to 2.47 and 1.50 in Węgliniec and to 2.67 and 1.52 in Batorów and the percentage of polymorphic loci was 80% and 87%, respectively. Close relationship between the three studied species were confirmed. The genetic differences between the two populations of P. uliginosa were substantial, as the Nei's genetic distance between the two populations (D = 0.040) was larger than between populations of P. sylvestris and between populations of P. mugo. The relatively high level of genetic differentiation between P. uliginosa populations may result from their isolation, small size and possibly different origin of these populations.

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Genetic variation of cowslip [Primula veris L.] populations [West Poland]

84%

Morozowska M., Krzakowa M.

Acta Societatis Botanicorum Poloniae

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2003

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tom 72

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nr 4

Genetic variation of twelve Polish populations of Primula veris L. from western Poland was investigated in respect of six enzyme systems: 6-phosphogluconate dehydrogenase (6PGD), diaphorase (DIA), menadione reductase (MNR), formate dehydrogenase (FDH), isocitrate dehydrogenase (IDH) and glutamate oxaloacetate transaminase (GOT). Only two of them (6PGD and DIA) were polymorphic and all populations were compared according to four loci and eight alleles. For 6PGD only one out of the two detected loci (locus 6PGD-2) was polymorphic and consisted of three alleles a, b and c. For DIA each of two detected loci had two alleles. For 6PGD-2 one population was monomorphic and four populations were monomorphic for DIA-1 and DIA-2. The rest of the populations were polymorphic with low frequency of heterozygotes. The low heterozygosity level, found in the examined populations, was confirmed by high values of the fixation index (F). The level of genetic differentiation among GST populations specified for each polymorphic loci, was equal to 0.045 for 6PGD-2 and had the value of 0.078 for DIA-2 and 0.186 for DIA-1. Nm value for polymorphic loci was 1.10 for DIA-1 and 2.94 for DIA-2, and for 6PGD-2 was 5.33, what indicates some gene flow between the examined populations. The dendrogram constructed on the basis of genotype frequencies showed that the populations were divided into two groups, however the most southern population No. 2 was clearly similar to the northern population No. 8.

14

Genetic differentiation of commonn shrew Sorex araneus populations among different alpine valleys revealed by microsatellites

84%

Lugon-Moulin N., Balloux F., Hausser J.

Acta Theriologica. Supplement

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2000

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tom 45

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nr 1

15

Genetic differentiation and gene flow between the Drnholec and Legucki Mlyn chromosome races of the common shrew Sorex araneus in Northern Poland

84%

Ratkiewicz M., Supruniuk J., Fedyk S., Banaszek A., Chetnicki W., Szalaj K. A.

Acta Theriologica. Supplement

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2000

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tom 45

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nr 1

16

Genetic differentiation within two genera of Microcoryphia [Insecta, Apterygota]: Promesomachilis and Praemachiloides

84%

Fanciulli P. P., Bach C., Gaju M., Frati F.

Polskie Pismo Entomologiczne

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1995

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tom 64

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nr 1-4

17

Porownanie izolatow nicieni owadobojczych Steinernema bicornutum metoda PCR-RAPD

67%

Dziegielewska M., Myskow B., Kaup G.

Progress in Plant Protection

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2005

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tom 45

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nr 2

641-644

18

Conservation genetics of the Black Grouse Tetrao tetrix in Poland - distribution of genetic diversity among the last populations

67%

Rutkowski R., Palucki A., Dulisz B., Ciach M., Nowak-Zyczynska Z., Kowalewska K.

Acta Ornithologica

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2018

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tom 53

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nr 2

The Black Grouse Tetrao tetrix populations in Europe have become fragmented and reduced in numbers. These processes affected genetic diversity of the species, altering patterns of gene flow and genetic structure. In Poland, the Black Grouse is one of the most endangered bird species, however very little is known about diversity of this native population, bordering on to the area of Europe in which the species maintains a continuous range. To complete the knowledge of genetic structure of European populations, we analysed microsatellite polymorphism in 97 native Polish birds, along with 39 introduced individuals, originating in Belarus and at a breeding centre in Poland, regarded as representing the gene pool from the north-eastern part of the country. The results confirmed that isolation of populations and recent decreases in their sizes have reduced genetic diversity in Poland's populations of the Black Grouse. The results also indicated the presence of two genetic groups in Poland, involving birds of the north-eastern part of the country and the Carpathians Foothills in a first group, and the population from the Sudetes (Izerskie and Karkonosze Mountains) in a second. We suggest that the conservation effort should treat these two groups as independent units. We also analysed a fragment of the mitochondrial Control Region (CRmtDNA). The comparisons of sequences obtained with data from other Eurasian populations indicate that populations of the Black Grouse in Poland should be included within a large Conservation Unit — the northern tetrix — which comprises birds from Eastern and Northern Europe.

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Ocena ciemnej plamistości pouderzeniowej bulw ziemniaka

67%

Komorowska-Jedrys J., Ohanowicz T., Szewczyk B.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

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2002

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nr 221

147-151

W latach 1997–1999 za pomocą obrotowego symulatora warunków uszkodzeń bulw testowano rody hodowlane ziemniaka, określając ich podatność na ciemną plamistość pouderzeniową Ciemna plamistość zależała w pierwszej kolejności od zróżnicowania genetycznego rodów, a lata badań miały mniejszy wpływ na tę cechę. Badania bulw za pomocą obrotowego symulatora uszkodzeń pozwalają na prowadzenie selekcji materiałów hodowlanych ziemniaka pod kątem wyeliminowania rodów o dużej podatności na ciemną plamistość.

20

Variability of Anthoxanthum species in Poland in relation to geographical-historical and environmental conditions: isozyme variation

67%

Drapikowska M.

Biodiversity: Research and Conservation

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2013

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tom 30

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