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Journal articles on the topic 'Isolated Population, Gene pool'

Author: Grafiati
Published: 19 February 2023
Last updated: 30 July 2025

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1

Shang, Peng, Wenting Li, Zhankun Tan, et al. "Population Genetic Analysis of Ten Geographically Isolated Tibetan Pig Populations." Animals 10, no. 8 (2020): 1297. http://dx.doi.org/10.3390/ani10081297.

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Several geographically isolated populations of Tibetan pigs inhabit the high-altitude environment of the Tibetan Plateau. Their genetic relationships, contribution to the pool of genetic diversity, and their origin of domestication are unclear. In this study, whole-genome re-sequencing data from 10 geographically isolated Tibetan pig populations were collected and analyzed. Population genetic analyses revealed limited genetic differentiation among the Tibetan pig populations. Evidence from deleterious variant analysis indicated that population-specific deleterious variants were the major compo
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2

Huang, K., J. Bahl, X. H. Fan, et al. "Establishment of an H6N2 Influenza Virus Lineage in Domestic Ducks in Southern China." Journal of Virology 84, no. 14 (2010): 6978–86. http://dx.doi.org/10.1128/jvi.00256-10.

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ABSTRACT Multiple reassortment events between different subtypes of endemic avian influenza viruses have increased the genomic diversity of influenza viruses circulating in poultry in southern China. Gene exchange from the natural gene pool to poultry has contributed to this increase in genetic diversity. However, the role of domestic ducks as an interface between the natural gene pool and terrestrial poultry in the influenza virus ecosystem has not been fully characterized. Here we phylogenetically and antigenically analyzed 170 H6 viruses isolated from domestic ducks from 2000 to 2005 in sou
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Kharkov, V. N., N. A. Kolesnikov, L. V. Valikhova, et al. "Traces of Paleolithic expansion in the Nivkh gene pool based on data on autosomal SNP and Y chromosome polymorphism." Vavilov Journal of Genetics and Breeding 28, no. 6 (2024): 659–66. http://dx.doi.org/10.18699/vjgb-24-73.

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The Nivkhs are a small ethnic group indigenous of the Russian Far East, living in the Khabarovsk Territory and on Sakhalin Island, descending from the ancient inhabitants of these territories. In the Nivkhs, a specific Sakhalin-Amur anthropological type is prevalent. They are quite isolated, due to long isolation from contacts with other peoples. The gene pool of the Nivkhs and other Far Eastern and Siberian populations was characterized using a genome-wide panel of autosomal single-nucleotide polymorphic markers and Y chromosome haplogroups. Bioinformatic processing of frequencies of autosoma
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4

Singh, Shree P., Howard F. Schwartz, Henry Terán, Diego Viteri, and Kristen Otto. "Pyramiding white mould resistance between and within common bean gene pools." Canadian Journal of Plant Science 94, no. 5 (2014): 947–54. http://dx.doi.org/10.4141/cjps2013-321.

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Singh, S. P., Schwartz, H. F., Terán, H., Viteri, D. and Otto, K. 2014. Pyramiding white mould resistance between and within common bean gene pools. Can. J. Plant Sci. 94: 947–954. White mould caused by Sclerotinia sclerotiorum (Lib.) de Bary is a severe disease of common bean (Phaseolus vulgaris L.) in North America and similar production regions. Low to high levels of white mould resistance exist in cultivated and wild common bean and the secondary gene pool. But, cultivars with high levels of resistance are not yet available. The objectives of this study were: (1) to combine or pyramid high
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5

Grugni, Viola, Alessandro Raveane, Giulia Colombo, et al. "Y-chromosome and Surname Analyses for Reconstructing Past Population Structures: The Sardinian Population as a Test Case." International Journal of Molecular Sciences 20, no. 22 (2019): 5763. http://dx.doi.org/10.3390/ijms20225763.

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Many anthropological, linguistic, genetic and genomic analyses have been carried out to evaluate the potential impact that evolutionary forces had in shaping the present-day Sardinian gene pool, the main outlier in the genetic landscape of Europe. However, due to the homogenizing effect of internal movements, which have intensified over the past fifty years, only partial information has been obtained about the main demographic events. To overcome this limitation, we analyzed the male-specific region of the Y chromosome in three population samples obtained by reallocating a large number of Sard
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Yanagawa, Katsunori, Akira Haraguchi, Kai Yoshitake, et al. "Ubiquity of Euglena mutabilis Population in Three Ecologically Distinct Acidic Habitats in Southwestern Japan." Water 13, no. 11 (2021): 1570. http://dx.doi.org/10.3390/w13111570.

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Three strains of Euglena mutabilis were isolated from sediments in acidic inland water systems (pH = 3.4–4.7), in Southwestern Japan—acid mine drainage in Sensui (Fukuoka), cold sulfidic spring in Bougatsuru (Oita), and a temporal pool in the Ebinokogen volcanic area (Miyazaki). All strains grew well in acidic media at pH 3.07. Phylogenetic analysis among these three strains showed high similarities to plastid SSU and nuclear SSU rRNA gene sequences (99.86% and 99.76%, respectively). They were closely related to the cultured isolates from other highly acidic habitats (pH = 2.0–5.9). Concentrat
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7

Dekoninck, Wouter, Kevin Maebe, Peter Breyne, and Frederik Hendrickx. "Polygyny and strong genetic structuring within an isolated population of the wood ant Formica rufa." Journal of Hymenoptera Research 41 (December 22, 2014): 95–111. https://doi.org/10.3897/JHR.41.8191.

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Social structuring of populations within some Formica species exhibits considerable variation going from monodomous and monogynous populations to polydomous, polygynous populations. The wood ant species Formica rufa appears to be mainly monodomous and monogynous throughout most of its distribution area in central and northern Europe. Only occasionally it was mentioned that F. rufa can have both polygynous and monogynous colonies in the same geographical region. We studied an isolated polydomous F. rufa population in a deciduous mixed forest in the north-west of Belgium. The level of polydomy w
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8

Olalekan Adeola, Pius, Oluwole Moses David, and Olusola Adeoye Oluwole. "Evaluation of pathogenicity and antifungal resistance of frequently occurred Aspergillus and Fusarium species in swimming pools in selected hotels in Ekiti state." International Journal of Basic and Applied Sciences 13, no. 1 (2024): 7–11. http://dx.doi.org/10.14419/k4jsjj33.

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Background: Swimming pools have been reported as critical fungal reservoirs. This study was designed to investigate fungal populations in swimming pools as well as detect the presence of virulence factors in the recovered isolates. Methods: Estimation of the mycobiota in the swimming pools sampled was done and isolates recovered were identified using colonial, morphology and molecular methods. Also, virulence factors: lipase, keratinase, laccase, hydrophobicity and biofilm formation were also determined using standard methods while antifungal susceptibility was done using clinically approved m
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9

Damba, Larissa D., Elena V. Aigygy, Oleg P. Balanovsky, Nadehzda V. Markina, Maksat K. Zhabagin, and Elena V. Balanovskaya. "The Central Asian component in the gene pool of the Tuvan tribal group Mongush: on the question of the Mongolian contribution to the ethnogenesis of the Tuvans." Moscow University Anthropology Bulletin (Vestnik Moskovskogo Universiteta. Seria XXIII. Antropologia), no. 1 (June 23, 2022): 77–85. http://dx.doi.org/10.32521/2074-8132.2022.1.077-085.

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Introduction. Historical sources, as well as ethnographic, anthropological and linguistic data, speak of a significant influence of the Mongol-speaking tribes on the ethnogenesis of the Tuvans. Instead, the degree of Mongolian influence on the gene pool can only be assessed in molecular genetic studies. In this work, according to the data of complete sequencing of the C2-M217 haplogroup, a population screening of the Y-gene pool of the most numerous Tuvan tribal group Mongush was carried out. Materials and methods. DNA isolated from venous blood samples of 98 representatives of the Mongush tri
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10

Santorek, Anna, Paweł Armatys, Barbara Pregler, et al. "Genetic diversity of the Carpathian capercaillie in space and time." Folia Forestalia Polonica 66, no. 1 (2024): 46–60. http://dx.doi.org/10.2478/ffp-2024-0005.

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Abstract Knowledge about changes occurring in the genetic structure of populations is extremely important in the case of endangered species. Research studies conducted in space and time allow us to identify factors that are influencing gene flow. Especially in the case of species occurring in the form of dispersed, more or less isolated populations, this is crucial for developing effective conservation strategies. The Carpathians are one of the most important capercaillies stronghold in Central Europe. The population here is fragmented, and at least, some groups of birds are small and isolated
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11

LEBEDEV, A. V., A. V. GEMONOV, and A. M. SELIVERSTOV. "Phenotypic structure and diversity of spruce populations of the Kologrivsky Forest Reserve." Prirodoobustrojstvo, no. 1 (2022): 109–16. http://dx.doi.org/10.26897/1997-6011-2022-1-109-116.

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The aim of the study is to study the phenotypic structure and diversity of spruce populations in the state reserve «Kologrivsky forest». The reserve is located in the conditions of natural hybridization of Siberian spruce and European spruce with the formation of intermediate forms. The relevance of studying the variability and population structure of spruce in the region is due to the need for understanding its intraspecifi c differentiation and microevolution in the zone of introgressive hybridization, preservation of the gene pool, and the need for its selective improvement as the main sour
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12

Riget, F. F., K. H. Nygaard, and B. Christensen. "Population Structure, Ecological Segregation, and Reproduction in a Population of Arctic Char (Salvelinus alpinus) from Lake Tasersuaq, Greenland." Canadian Journal of Fisheries and Aquatic Sciences 43, no. 5 (1986): 985–92. http://dx.doi.org/10.1139/f86-121.

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The population of Arctic char (Salvelinus alpinus) in a large lake, Tasersuaq, in West Greenland consisted of three distinct size groups representing ecological forms with differences in habitat, feeding, and reproduction. Smaller char were benthic and fed on chironomids whereas medium-sized char were living pelagically in summer, feeding on zooplankton. Larger char moved randomly over the strata, and cannibalism increased in importance with increasing size. Within each size group there was a great variation in age. All three groups contained spawners but spawning frequency variated between gr
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13

Lindroos, Hillevi, Olga Vinnere, Alex Mira, Dirk Repsilber, Kristina Näslund, and Siv G. E. Andersson. "Genome Rearrangements, Deletions, and Amplifications in the Natural Population of Bartonella henselae." Journal of Bacteriology 188, no. 21 (2006): 7426–39. http://dx.doi.org/10.1128/jb.00472-06.

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ABSTRACT Cats are the natural host for Bartonella henselae, an opportunistic human pathogen and the agent of cat scratch disease. Here, we have analyzed the natural variation in gene content and genome structure of 38 Bartonella henselae strains isolated from cats and humans by comparative genome hybridizations to microarrays and probe hybridizations to pulsed-field gel electrophoresis (PFGE) blots. The variation in gene content was modest and confined to the prophage and the genomic islands, whereas the PFGE analyses indicated extensive rearrangements across the terminus of replication with b
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14

Chaillou, St�phane, Marie Daty, Fabienne Baraige, et al. "Intraspecies Genomic Diversity and Natural Population Structure of the Meat-Borne Lactic Acid Bacterium Lactobacillus sakei." Applied and Environmental Microbiology 75, no. 4 (2008): 970–80. http://dx.doi.org/10.1128/aem.01721-08.

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ABSTRACT Lactobacillus sakei is a food-borne bacterium naturally found in meat and fish products. A study was performed to examine the intraspecies diversity among 73 isolates sourced from laboratory collections in several different countries. Pulsed-field gel electrophoresis analysis demonstrated a 25% variation in genome size between isolates, ranging from 1,815 kb to 2,310 kb. The relatedness between isolates was then determined using a PCR-based method that detects the possession of 60 chromosomal genes belonging to the flexible gene pool. Ten different strain clusters were identified that
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15

Hmeljevski, Karina Vanessa, Marina Wolowski, Rafaela Campostrini Forzza, and Leandro Freitas. "High outcrossing rates and short-distance pollination in a species restricted to granitic inselbergs." Australian Journal of Botany 65, no. 4 (2017): 315. http://dx.doi.org/10.1071/bt16232.

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Plant populations that are spatially isolated may experience genetic isolation if gene flow via pollination or seed dispersal is limited. The high genetic differentiation among populations of Encholirium horridum L.B.Sm. indicates low gene flow for this species that occurs exclusively on granitic inselbergs in South-east Brazil. Here we describe reproductive and pollination attributes of this bromeliad assessing how they influence the current degree of genetic isolation among populations. The mating system, estimated using five microsatellites markers, indicated allogamy and low pollen pool st
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16

Stepanov, V. A., N. A. Kolesnikov, L. V. Valikhova, A. A. Zarubin, I. Yu Khitrinskaya, and V. N. Kharkov. "Structure and origin of Tuvan gene pool according to autosome SNP and Y-chromosome haplogroups." Vavilov Journal of Genetics and Breeding 27, no. 1 (2023): 36–45. http://dx.doi.org/10.18699/vjgb-23-06.

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Tuvans are one of the most compactly living peoples of Southern Siberia, settled mainly in the territory of Tuva. The gene pool of the Tuvans is quite isolated, due to endogamy and a very low frequency of interethnic marriages. The structure of the gene pool of the Tuvans and other Siberian populations was studied using a genomewide panel of autosomal single nucleotide polymorphic markers and Y-chromosome markers. The results of the analysis of the frequencies of autosomal SNPs by various methods, the similarities in the composition of the Y-chromosome haplogroups and YSTR haplotypes show that
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17

Lotsander, Anna, Malin Hasselgren, Malin Larm, Johan Wallén, Anders Angerbjörn, and Karin Norén. "Low Persistence of Genetic Rescue Across Generations in the Arctic Fox (Vulpes lagopus)." Journal of Heredity 112, no. 3 (2021): 276–85. http://dx.doi.org/10.1093/jhered/esab011.

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Abstract Genetic rescue can facilitate the recovery of small and isolated populations suffering from inbreeding depression. Long-term effects are however complex, and examples spanning over multiple generations under natural conditions are scarce. The aim of this study was to test for long-term effects of natural genetic rescue in a small population of Scandinavian Arctic foxes (Vulpes lagopus). By combining a genetically verified pedigree covering almost 20 years with a long-term dataset on individual fitness (n = 837 individuals), we found no evidence for elevated fitness in immigrant F2 and
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18

Kistler, Logan, S. Yoshi Maezumi, Jonas Gregorio de Souza, et al. "Multiproxy evidence highlights a complex evolutionary legacy of maize in South America." Science 362, no. 6420 (2018): 1309–13. http://dx.doi.org/10.1126/science.aav0207.

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Domesticated maize evolved from wild teosinte under human influences in Mexico beginning around 9000 years before the present (yr B.P.), traversed Central America by ~7500 yr B.P., and spread into South America by ~6500 yr B.P. Landrace and archaeological maize genomes from South America suggest that the ancestral population to South American maize was brought out of the domestication center in Mexico and became isolated from the wild teosinte gene pool before traits of domesticated maize were fixed. Deeply structured lineages then evolved within South America out of this partially domesticate
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19

Nercessian, Olivier, Emma Noyes, Marina G. Kalyuzhnaya, Mary E. Lidstrom, and Ludmila Chistoserdova. "Bacterial Populations Active in Metabolism of C1 Compounds in the Sediment of Lake Washington, a Freshwater Lake." Applied and Environmental Microbiology 71, no. 11 (2005): 6885–99. http://dx.doi.org/10.1128/aem.71.11.6885-6899.2005.

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ABSTRACT Active members of the bacterial community in the sediment of Lake Washington, with special emphasis on C1 utilizers, were identified by employing two complementary culture-independent approaches: reverse transcription of environmental mRNA and 16S rRNA combined with PCR (RT-PCR) and stable-isotope probing (SIP) of DNA with the 13C-labeled C1 substrates methanol, methylamine, formaldehyde, and formate. Analysis of RT-PCR-amplified fragments of 16S rRNA-encoding genes revealed that gammaproteobacterial methanotrophs belonging to Methylobacter and Methylomonas dominate the active methylo
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Hakenbeck, Regine, Nadège Balmelle, Beate Weber, Christophe Gardès, Wolfgang Keck, and Antoine de Saizieu. "Mosaic Genes and Mosaic Chromosomes: Intra- and Interspecies Genomic Variation of Streptococcus pneumoniae." Infection and Immunity 69, no. 4 (2001): 2477–86. http://dx.doi.org/10.1128/iai.69.4.2477-2486.2001.

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ABSTRACT Streptococcus pneumoniae remains a major causative agent of serious human diseases. The worldwide increase of antibiotic resistant strains revealed the importance of horizontal gene transfer in this pathogen, a scenario that results in the modulation of the species-specific gene pool. We investigated genomic variation in 20S. pneumoniae isolates representing major antibiotic-resistant clones and 10 different capsular serotypes. Variation was scored as decreased hybridization signals visualized on a high-density oligonucleotide array representing 1,968 genes of the type 4 reference str
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Javed, Maryam, Ali Raza, Asif Nadeem, Tahir Yaqub, and Muhammad Danish Ahmed. "Genomic analysis of tyrosine hydroxylase gene sequence variations and its association with D-9- tetrahydrocannabinol dependence in addicts." Tropical Journal of Pharmaceutical Research 19, no. 3 (2020): 475–81. http://dx.doi.org/10.4314/tjpr.v19i3.3.

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Purpose: To elucidate the genetic basis of drug addiction by conducting a genetic analysis of TH (tyrosine hydroxylase) gene and the novel polymorphisms that might help in understanding addiction and its molecular basis.
 Methods: Forty-two subjects were recruited into three groups for this study. DNA was isolated from the individuals. PCR amplification of TH gene was carried out and amplicons were sequenced. Genomic characterization of TH gene provided five polymorphic loci – TH 1, TH 2, TH 3, TH 4 and TH 5 which were found among all the groups.
 Results: According to Shannon’s dive
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Soudi, Mohammad Reza, Fatemeh Nafian, and Sara Gharavi. "Degenerate primers as biomarker for gene-targeted metagenomics of the catechol 1, 2-dioxygenase-encoding gene in microbial populations of petroleum-contaminated environments." Annals of Microbiology 66, no. 3 (2016): 1127–36. https://doi.org/10.1007/s13213-016-1197-3.

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Catechol 1, 2-dioxygenase (1, 2-CTD) plays an important role in the biodegradation of most aromatic pollutants (e.g. phenol) by cleaving the bond between the phenolic hydroxyl groups. In this study, we analysed microbial populations in petroleum-contaminated soil samples by the culture-dependent approach and chose one population as a sample location for metagenomic studies. This population showed the largest number of phenol-degrading isolates and the most phylogenetic diversity based on repetitive sequence-based PCR and 16S rDNA analyses. The isolates were assigned mainly to the bacterial gen
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23

Verhoeven, Koen J. F., Mirka Macel, Lorne M. Wolfe, and Arjen Biere. "Population admixture, biological invasions and the balance between local adaptation and inbreeding depression." Proceedings of the Royal Society B: Biological Sciences 278, no. 1702 (2010): 2–8. http://dx.doi.org/10.1098/rspb.2010.1272.

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When previously isolated populations meet and mix, the resulting admixed population can benefit from several genetic advantages, including increased genetic variation, the creation of novel genotypes and the masking of deleterious mutations. These admixture benefits are thought to play an important role in biological invasions. In contrast, populations in their native range often remain differentiated and frequently suffer from inbreeding depression owing to isolation. While the advantages of admixture are evident for introduced populations that experienced recent bottlenecks or that face nove
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Troy, Erin B., Tao Lin, Lihui Gao, et al. "Understanding Barriers to Borrelia burgdorferi Dissemination during Infection Using Massively Parallel Sequencing." Infection and Immunity 81, no. 7 (2013): 2347–57. http://dx.doi.org/10.1128/iai.00266-13.

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ABSTRACTBorrelia burgdorferiis an invasive spirochete that can cause acute and chronic infections in the skin, heart, joints, and central nervous system of infected mammalian hosts. Little is understood about where the bacteria encounter the strongest barriers to infection and how different components of the host immune system influence the population as the infection progresses. To identify population bottlenecks in a murine host, we utilized Tn-seq to monitor the composition of mixed populations ofB. burgdorferiduring infection. Both wild-type mice and mice lacking the Toll-like receptor ada
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Гасанов, Alibulat Gasanov, Абакарова, and Muslimat Abakarova. "Formation of honey bees modern look and their reproduction in the republic of Dagestan." Vestnik of Kazan State Agrarian University 9, no. 3 (2014): 117–19. http://dx.doi.org/10.12737/6540.

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Grey mountain Caucasian bees are of great interest for the selection, as a valuable gene pool of different populations of this race is supported by high mountains and inaccessible gorges of Dagestan, while serving as an isolated mountainous natural breeding areas. The studies were conducted in three different climatic conditions of the republic: the plains, foothills and mountainous areas. In the area of natural dispersal of gray mountain Caucasian bees in Dagestan released several local populations and different backgrounds. Characteristics of the main morphological features of honey bees are
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Barton, N. H. "What role does natural selection play in speciation?" Philosophical Transactions of the Royal Society B: Biological Sciences 365, no. 1547 (2010): 1825–40. http://dx.doi.org/10.1098/rstb.2010.0001.

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If distinct biological species are to coexist in sympatry, they must be reproductively isolated and must exploit different limiting resources. A two-niche Levene model is analysed, in which habitat preference and survival depend on underlying additive traits. The population genetics of preference and viability are equivalent. However, there is a linear trade-off between the chances of settling in either niche, whereas viabilities may be constrained arbitrarily. With a convex trade-off, a sexual population evolves a single generalist genotype, whereas with a concave trade-off, disruptive select
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Kiewitz, Claudia, and Burkhard Tümmler. "Sequence Diversity of Pseudomonas aeruginosa: Impact on Population Structure and Genome Evolution." Journal of Bacteriology 182, no. 11 (2000): 3125–35. http://dx.doi.org/10.1128/jb.182.11.3125-3135.2000.

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ABSTRACT Comparative sequencing of Pseudomonas aeruginosa genesoriC, citS, ampC, oprI,fliC, and pilA in 19 environmental and clinical isolates revealed the sequence diversity to be about 1 order of magnitude lower than in comparable housekeeping genes ofSalmonella. In contrast to the low nucleotide substitution rate, the frequency of recombination among different P. aeruginosa genotypes was high, leading to the random association of alleles. The P. aeruginosa population consists of equivalent genotypes that form a net-like population structure. However, each genotype represents a cluster of cl
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Almathen, Faisal, Pauline Charruau, Elmira Mohandesan, et al. "Ancient and modern DNA reveal dynamics of domestication and cross-continental dispersal of the dromedary." Proceedings of the National Academy of Sciences 113, no. 24 (2016): 6707–12. http://dx.doi.org/10.1073/pnas.1519508113.

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Dromedaries have been fundamental to the development of human societies in arid landscapes and for long-distance trade across hostile hot terrains for 3,000 y. Today they continue to be an important livestock resource in marginal agro-ecological zones. However, the history of dromedary domestication and the influence of ancient trading networks on their genetic structure have remained elusive. We combined ancient DNA sequences of wild and early-domesticated dromedary samples from arid regions with nuclear microsatellite and mitochondrial genotype information from 1,083 extant animals collected
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Ren, Zhongbo, Jiang Lu, and Olusola Lamikanra. "Identification of a RAPD Marker Closely Linked to Fruit Color in Muscadine Grapes (Vitis rotundifolia)." HortScience 33, no. 3 (1998): 473d—473. http://dx.doi.org/10.21273/hortsci.33.3.473d.

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The major fruit color phenotypes in grapes are either white (including green, yellow, bronze etc.) or red (including pink, reddish) and black (including purple). Like other fruits, anthocyanin (Acy) pigments in the berry skin contribute to the colors of grapes. These water-soluble pigments are phenolic compounds as secondary metabolite and accumulated essentially in the epidermal cells of fruits. Seedling screening can be performed if a genetic marker for the fruit color is available. A F1 population of 82 progenies derived from a cross of two muscadine grape (Vitis rotundifolia) cultivars, `S
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Anderson, Stephen, Matthew V. McCullen, Shurjo Sen, and Daniel W. McVicar. "Ly49 Pro1 activity is associated with gene activation, not gene expression: Pro1 transcripts are not present in mature Ly49-expressing NK cells." Journal of Immunology 196, no. 1_Supplement (2016): 202.3. http://dx.doi.org/10.4049/jimmunol.196.supp.202.3.

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Abstract Recent studies of the Ly49 loci have challenged the traditional view of promoters, since transcriptional start sites for the variegated Ly49 genes were not found to be associated with regions possessing transcriptional activity in in vitro promoter assays. The upstream Pro1 bidirectional promoter previously associated with probabilistic activation of variegated Ly49 genes by immature bone marrow NK cells was shown to be active in mature NK cells and function as an enhancer element, suggesting that it may play a role in Ly49 transcript initiation in mature NK cells. To directly assess
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Devetakovic, Jovana, and Mirjana Sijacic-Nikolic. "Variability of morphometric characteristics of the leaves of European white elm from the area of Great War Island." Bulletin of the Faculty of Forestry, no. 107 (2013): 57–69. http://dx.doi.org/10.2298/gsf1307053d.

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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 availab
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Bocharova, Anna V., and Vadim A. Stepanov. "Search of natural selection signals in genomic loci associated with diseases leading to impairment of human cognitive functions in Northern Eurasia populations." Vestnik Tomskogo gosudarstvennogo universiteta. Biologiya, no. 69 (2025): 20–28. https://doi.org/10.17223/19988591/69/3.

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In recent years, the genetic component of many general common diseases has been considered from the point of view of evolutionary context: asthma, chronic obstructive pulmonary disease, cancer, obesity, diabetes. The genetic history of populations leads to the accumulation of specific frequencies. Modern susceptibility to common pathological phenotypes could have had a certain adaptive significance in the past during the dispersal of humans across the globe. Of particular interest are diseases with phenotypes associated with cognitive impairment, such as schizophrenia, Alzheimer's disease, bip
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Sela, Hanan, Laurentiu N. Spiridon, Haim Ashkenazi, et al. "Three-Dimensional Modeling and Diversity Analysis Reveals Distinct AVR Recognition Sites and Evolutionary Pathways in Wild and Domesticated Wheat Pm3 R Genes." Molecular Plant-Microbe Interactions® 27, no. 8 (2014): 835–45. http://dx.doi.org/10.1094/mpmi-01-14-0009-r.

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The Pm3 gene confers resistance against wheat powdery mildew. Studies of Pm3 diversity have shown that Pm3 alleles isolated from southern populations of wild emmer wheat located in Lebanon, Jordan, Israel, and Syria are more diverse and more distant from bread wheat alleles than alleles from the northern wild wheat populations located in Turkey, Iran, and Iraq. Therefore, southern populations from Israel were studied extensively to reveal novel Pm3 alleles that are absent from the cultivated gene pool. Candidate Pm3 genes were isolated via a polymerase chain reaction cloning approach. Known an
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34

Gulov, A., Z. Sayfutdinova, and A. Brandorf. "The honey bee <i>Apis mellifera L.</i> biodiversity in Russia and its preservation." Genetics and breeding of animals, no. 4 (January 6, 2023): 114–23. http://dx.doi.org/10.31043/2410-2733-2022-4-114-123.

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Biological diversity of bee - the genetic resource in Russia, which enables maintaining homeostasis of ecosystems through pollination entomophilies plants. The biodiversity of bees in human life has ecological, social, economic and aesthetic significance. Of particular interest in the preservation of biodiversity are taxonomically isolated species and populations, not resemble others and therefore unique in their genetic constitution. These species are often endemic, that is limited to the dissemination of one area. Their extinction of will mean the loss of biodiversity. Uncontrolled introduct
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Filipponi, Doria, Robin M. Hobbs, Sergio Ottolenghi, et al. "Repression of kit Expression by Plzf in Germ Cells." Molecular and Cellular Biology 27, no. 19 (2007): 6770–81. http://dx.doi.org/10.1128/mcb.00479-07.

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ABSTRACT Male mice lacking expression of Plzf, a DNA sequence-specific transcriptional repressor, show progressive germ cell depletion due to exhaustion of the spermatogonial stem cell population. This is likely due to the deregulated expression of genes controlling the switch between spermatogonial self-renewal and differentiation. Here we show that Plzf directly represses the transcription of kit, a hallmark of spermatogonial differentiation. Plzf represses both endogenous kit expression and expression of a reporter gene under the control of the kit promoter region. A discrete sequence of th
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36

Cuevas, José M., Agnès Delaunay, Matevz Rupar, Emmanuel Jacquot, and Santiago F. Elena. "Molecular evolution and phylogeography of potato virus Y based on the CP gene." Journal of General Virology 93, no. 11 (2012): 2496–501. http://dx.doi.org/10.1099/vir.0.044347-0.

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Potato virus Y (PVY) is an important plant pathogen with a wide host range that includes, among others, potato, tobacco, tomato and pepper. The coat protein (CP) of PVY has been commonly used in phylogenetic studies for strain classification. In this study, we used a pool of 292 CP sequences from isolates collected worldwide. After detecting and removing recombinant sequences, we applied Bayesian techniques to study the influence of geography and host species in CP population structure and dynamics. Finally, we performed selection and covariation analyses to identify specific amino acids invol
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Musyl, MK, and CP Keenan. "Population genetics and zoogeography of Australian freshwater golden perch, Macquaria ambigua (Richardson 1845) (Teleostei: Percichthyidae), and electrophoretic identification of a new species from the Lake Eyre basin." Marine and Freshwater Research 43, no. 6 (1992): 1585. http://dx.doi.org/10.1071/mf9921585.

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Populations of golden perch (Macquaria ambigua) were sampled from both sides of the Great Dividing Range (GDR): from the Murray-Darling drainage basin (Murray R., L. Keepit and Condamine R.), the L. Eyre internal drainage basin (Barcoo R. and Diamantina R.), and the internal drainage basin of the Bulloo R.-all to the west of the GDR-and from the Fitzroy drainage basin (Dawson R. and Nogoa R.) east of the GDR. Starch-gel and polyacrylamide electrophoresis of 12 enzyme systems plus two general muscle proteins was used to estimate the genetic variation within and between populations. Of the 18 pr
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38

Kobiv, V. "Dynamics of lowland populations of Symphytum cordatum Waldst. et Kit. ex Willd. in different growth conditions." Visnyk of Lviv University. Biological series, no. 88 (March 16, 2023): 26–31. http://dx.doi.org/10.30970/vlubs.2023.88.03.

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Dynamics of isolated lowland populations of the Carpathian subendemic species Symphytum cordatum Waldst. et Kit. ex Willd. at the edge of its range is investigated. They were analyzed as a case study on the prospects of the lowland populations of S. cordatum under different growth conditions. Changes in the individual and group parameters of this species during the 17-year period are studied. Characteristic-markers of endangered state of S. cordatum populations in the mountain and lowland parts of its range are established. They include: low percentage of generative group or its absence, decre
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Ropa, James, Scott Cooper, Lindsay Beasley, David M. Markovitz, Hal E. Broxmeyer, and Maegan L. Capitano. "Extracellular DEK Treatment Mimics Hypoxic Blockade of Extra Physiologic Oxygen Stress in Human and Mouse Hematopoietic Cells." Blood 138, Supplement 1 (2021): 2152. http://dx.doi.org/10.1182/blood-2021-151171.

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Abstract Hematopoietic stem cell (HSC) and progenitor cell (HPC) self-renewal, proliferation, survival, and function are regulated by extracellular signals from cytokines and chemokines. DEK, a nuclear regulator of chromatin availability, was recently shown to also function as an extracellular protein that regulates HSC and HPC by inducing signaling through the CXC chemokine receptor 2 (CXCR2), enhancing pools of long-term stem cells while decreasing pools of functional HPC [Capitano et al., JCI, 2019, 129(6):2555-70]. Due to differing effects of extracellular (ec)DEK treatment on HSC growth a
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40

Sawasdee, Anuchart, Tsung-Han Tsai, Wen-Chi Liao, and Chang-Sheng Wang. "Identification of the CesA7 Gene Encodes Brittleness Mutation Derived from IR64 Variety and Breeding for Ruminant Feeding." Agriculture 14, no. 5 (2024): 706. http://dx.doi.org/10.3390/agriculture14050706.

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Rice straw presents challenges as livestock feed due to its low digestibility and the presence of chemical residues. One potential solution is to focus on breeding brittle varieties that possess disease-resistance traits. In this study, AZ1803, a brittle mutant line isolated from the IR64 mutant pool, was chosen for gene identification and breeding. The AZ1803 mutant was crossed to the TNG67 variety to generate a mapping population and to the CS11 variety for fine mapping and breeding. The gene was mapped on chr. 10 between RM467 and RM171 SSR markers and was narrowed down to RM271 and RM5392
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41

Ivannikova, А., А. Solovieva, and Т. Deniskova. "Characteristic of allele pool of sheep of the southern meat breed using microsatellite markers." Genetics and breeding of animals, no. 4 (January 8, 2024): 80–85. http://dx.doi.org/10.31043/2410-2733-2023-4-80-85.

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Purpose: to characterize the allele pool of sheep of the southern beef breed using microsatellites.Materials and methods. The biomaterial was ear’s plucks from 80 sheep of the southern meat breed, selected from the Ladozhsky Breeding Plant. 20 East Friesian sheep, 33 Dorset sheep and 63 Romanov sheep were used for comparison. Nine microsatellite loci (INRA005, SPS113, INRA23, MAF65, McM527, OarCP49, HSC, OarAE129, MAF214) were selected as DNA markers. Microsatellite variability was analyzed using the ABI3130x1 Genetic Analyzer. The results were processed in the GenAIEx 6.503 program, with the
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42

Liu, Hai-rui, Qing-bo Gao, Fa-qi Zhang, Gulzar Khan, and Shi-long Chen. "Westwards and northwards dispersal ofTriosteum himalayanum(Caprifoliaceae) from the Hengduan Mountains region based on chloroplast DNA phylogeography." PeerJ 6 (May 11, 2018): e4748. http://dx.doi.org/10.7717/peerj.4748.

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The varying topography and environment that resulted from paleoorogeny and climate fluctuations of the Himalaya–Hengduan Mountains (HHM) areas had a considerable impact on the evolution of biota during the Quaternary. To understand the phylogeographic pattern and historical dynamics ofTriosteum himalayanum(Caprifoliaceae), we sequenced three chloroplast DNA fragments (rbcL-accD,rps15-ycf1, andtrnH-psbA) from 238 individuals representing 20 populations. Nineteen haplotypes (H1–H19) were identified based on 23 single-site mutations and eight indels. Most haplotypes were restricted to a single po
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43

Borovkova, A. N., M. Yu Shalamitskiy, and E. S. Naumova. "Pectinolytic Yeast <i>Saccharomyces paradoxus</i> as a New Gene Pool for Winemaking." Микробиология 92, no. 2 (2023): 219–32. http://dx.doi.org/10.31857/s0026365622600729.

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Abstract—A large-scale screening of pectinolytic activity in the yeast Saccharomyces paradoxus isolated from various natural sources in Europe, Asia, North America, and the Hawaiian Islands was carried out. Of the 98 studied strains, pectinolytic activity was absent only in five Hawaiian and two European strains. Most strains were able to secrete active endo-polygalacturonase. North American strains UCDFST 52-225, UCDFST 61-359, UCDFST 61-220, 95-3, and UCDFST 62-186 had very high pectinolytic activity, comparable to or even higher than that of the experimentally obtained tetraploid strain S.
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44

Hasan, Sharmin, Agnelo Furtado, and Robert Henry. "Analysis of Domestication Loci in Wild Rice Populations." Plants 12, no. 3 (2023): 489. http://dx.doi.org/10.3390/plants12030489.

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The domestication syndrome is defined as a collection of domestication-related traits that have undergone permanent genetic changes during the domestication of cereals. Australian wild rice populations have not been exposed to gene flow from domesticated rice populations. A high level of natural variation of the sequences at domestication loci (e.g., seed shattering, awn development, and grain size) was found in Australian AA genome wild rice from the primary gene pool of rice. This natural variation is much higher than that found in Asian cultivated rice and wild Asian rice populations. The A
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45

Lydiate, Derek J., Rachel L. Rusholme Pilcher, Erin E. Higgins, and John A. Walsh. "Genetic control of immunity to Turnip mosaic virus (TuMV) pathotype 1 in Brassica rapa (Chinese cabbage)." Genome 57, no. 8 (2014): 419–25. http://dx.doi.org/10.1139/gen-2014-0070.

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Turnip mosaic virus (TuMV) is the major virus infecting crops of the genus Brassica worldwide. A dominant resistance gene, TuRB01b, that confers immunity to the virus isolate UK 1 (a representative pathotype 1 isolate of TuMV) on Brassica rapa was identified in the Chinese cabbage cultivar Tropical Delight. The TuRB01b locus was mapped to a 2.9-cM interval on B. rapa chromosome 6 (A6) that was flanked by RFLP markers pN101e1 and pW137e1. This mapping used a first backcross (B1) population segregating for the resistance gene at TuRB01b and sets of RFLP markers employed in previous mapping exper
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46

Rudders, RA, A. Levin, D. Jespersen, et al. "Crossreacting human lymphoma idiotypes." Blood 80, no. 4 (1992): 1039–44. http://dx.doi.org/10.1182/blood.v80.4.1039.1039.

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Abstract We have examined an unselected series of 72 lymphomas of diverse histologies with a panel of mouse monoclonal antibodies specific for human B-lymphoma-derived Ig idiotypes (anti-ids) to determine the nature and extent of id/anti-id crossreactivity. The anti-id antibodies were prepared from Ig isolated from seven follicular center cell lymphomas by heterohybridoma technique. Thirty-six of 75 individual anti-ids obtained in this manner were further selected based on their reactivity with highly restricted or private idiotypic determinants. Twelve of the 72 (17%) lymphoma biopsies reacte
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47

Rudders, RA, A. Levin, D. Jespersen, et al. "Crossreacting human lymphoma idiotypes." Blood 80, no. 4 (1992): 1039–44. http://dx.doi.org/10.1182/blood.v80.4.1039.bloodjournal8041039.

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We have examined an unselected series of 72 lymphomas of diverse histologies with a panel of mouse monoclonal antibodies specific for human B-lymphoma-derived Ig idiotypes (anti-ids) to determine the nature and extent of id/anti-id crossreactivity. The anti-id antibodies were prepared from Ig isolated from seven follicular center cell lymphomas by heterohybridoma technique. Thirty-six of 75 individual anti-ids obtained in this manner were further selected based on their reactivity with highly restricted or private idiotypic determinants. Twelve of the 72 (17%) lymphoma biopsies reacted with on
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48

White, Shawn E., and John F. Doebley. "The Molecular Evolution of terminal ear1, a Regulatory Gene in the Genus Zea." Genetics 153, no. 3 (1999): 1455–62. http://dx.doi.org/10.1093/genetics/153.3.1455.

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Abstract Nucleotide diversity in the terminal ear1 (te1) gene, a regulatory locus hypothesized to be involved in the morphological evolution of maize (Zea mays ssp. mays), was investigated for evidence of past selection. Nucleotide polymorphism in a 1.4-kb region of te1 was analyzed for a sample of 26 sequences isolated from 12 maize lines, five populations of the maize progenitor, Z. mays ssp. parviglumis, six other Zea populations, and two Tripsacum species. Although nucleotide diversity in te1 in maize is reduced relative to ssp. parviglumis, phylogenetic and statistical analyses of the pat
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49

Fomine, Forka Leypey Mathew. "Population Movements and Gene Flow in the 18th and 19th Century-Cameroon: Synopsis of Cameroon’s Demographic History." European Journal of Humanities and Social Sciences 5, no. 2 (2025): 5–15. https://doi.org/10.24018/ejsocial.2025.5.2.457.

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Before and during the 18th century, there was no Cameroon as it is known today. What European traders and missionaries knew about the country was limited to the coastal region. The Arabs from North Africa knew only the northern region of the country. After the Berlin Colonial Conference of 1884-85, the boundaries of the country were arrived at. This followed separate agreements signed by the Germans and the British to the West and with the French to the South, East and North. However, the peopling of Cameroonian territory took place in pre-historic times. However, the movement of populations f
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50

Fricke, W. Florian, Meredith S. Wright, Angela H. Lindell, et al. "Insights into the Environmental Resistance Gene Pool from the Genome Sequence of the Multidrug-Resistant Environmental Isolate Escherichia coli SMS-3-5." Journal of Bacteriology 190, no. 20 (2008): 6779–94. http://dx.doi.org/10.1128/jb.00661-08.

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ABSTRACT The increasing occurrence of multidrug-resistant pathogens of clinical and agricultural importance is a global public health concern. While antimicrobial use in human and veterinary medicine is known to contribute to the dissemination of antimicrobial resistance, the impact of microbial communities and mobile resistance genes from the environment in this process is not well understood. Isolated from an industrially polluted aquatic environment, Escherichia coli SMS-3-5 is resistant to a record number of antimicrobial compounds from all major classes, including two front-line fluoroqui
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