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1.
mtDNA diversity in rhesus monkeys reveals overestimates of divergence time and paraphyly with neighboring species 总被引:4,自引:0,他引:4
Reconstructions of the human-African great ape phylogeny by using
mitochondrial DNA (mtDNA) have been subject to considerable debate. One
confounding factor may be the lack of data on intraspecific variation. To
test this hypothesis, we examined the effect of intraspecific mtDNA
diversity on the phylogenetic reconstruction of another Plio- Pleistocene
radiation of higher primates, the fascicularis group of macaque (Macaca)
monkey species. Fifteen endonucleases were used to identify 10 haplotypes
of 40-47 restriction sites in M. mulatta, which were compared with similar
data for the other members of this species group. Interpopulational,
intraspecific mtDNA diversity was large (0.5%- 4.5%), and estimates of
divergence time and branching order incorporating this variation were
substantially different from those based on single representatives of each
species. We conclude that intraspecific mtDNA diversity is substantial in
at least some primate species. Consequently, without prior information on
the extent of genetic diversity within a particular species, intraspecific
variation must be assessed and accounted for when reconstructing primate
phylogenies. Further, we question the reliability of hominoid mtDNA
phylogenies, based as they are on one or a few representatives of each
species, in an already depauperate superfamily of primates.
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2.
Dobrovolskaya T. G. Golovchenko A. V. Yurchenko E. N. Yakushev A. V. Manucharova N. A. Lysak L. V. Kostina N. V. 《Microbiology》2020,89(1):107-114
Microbiology - This research analyses the structure and functions of bacterial communities of regressive spots in ombrotrophic bogs. Algal biomass was found to predominate in the biomass structure... 相似文献
3.
4.
O. G. Silkova O. B. Dobrovolskaya N. I. Dubovets I. G. Adonina L. A. Kravtsova A. I. Shchapova V. K. Shumny 《Russian Journal of Genetics》2007,43(8):957-960
The study presents a continuation of the research aimed at producing of wheat-rye substitution lines (2n = 42) based on the cross (Triticum aestivum L. × Secale sereale L.) × Triticum aestivum L., and using winter rye cultivars Vyatka and Vietnamskaya Mestnaya. In BC 1 F 5 two lines were identified, having karyotypes in which a pair of homologous wheat chromosomes was substituted by a homeologous pair of rye chromosomes. The chromosome composition of these lines was analyzed using C-banding, GISH, and SSR markers. It was demonstrated that karyotype of each line included a single pair of rye chromosomes and lacked wheat-rye translocations. The rye chromosomes were identified, and the chromosomes of wheat, at which the substitutions occurred, were determined. The lines generated by crosses with rye of Vyatka and Vietnamskaya Mestnaya cultivars were designated 1Rv(1A) and 5Rviet(5A), respectively. Chromosome identification and classification of the lines makes it possible to use them in breeding programs and genetic studies. 相似文献
5.
FRIZZY PANICLE Drives Supernumerary Spikelets in Bread Wheat 总被引:1,自引:0,他引:1
Oxana Dobrovolskaya Caroline Pont Richard Sibout Petr Martinek Ekaterina Badaeva Florent Murat Audrey Chosson Nobuyoshi Watanabe Elisa Prat Nadine Gautier Véronique Gautier Charles Poncet Yuriy L. Orlov Alexander A. Krasnikov Hélène Bergès Elena Salina Lyudmila Laikova Jerome Salse 《Plant physiology》2015,167(1):189-199
6.
Dobrovolskaya MV 《Journal of PHYSIOLOGICAL ANTHROPOLOGY and Applied Human Science》2005,24(4):433-438
Undoubtedly modern mankind is an omnivorous species. Nevertheless, types of diet changed at the time of anthropogenesis. The Upper Palaeolithic period is the crucial time because of the appearance of anatomically modern humans in Europe. The main goal in this period investigation is to find the Neanderthal man-Upper Palaeolithic man diet distinction. A sharp early Holocene rise in humidity and temperature and melting of the permafrost resulted in the complete destruction of traditional migration routes, campsite losses, and the flora and fauna of inland territories changing. All these factors affected nutrition patterns, too. The comparison of the different Mesolithic and Neolithic groups' diet patterns allow us to discuss problems of the influence of cultural and ecological factors. The bone tissue chemical concentrations (Ca, Zn, Sr, Cu) from Upper Palaeolithic, Mesolithic and Neolithic burials are considered to reconstruct individual and group patterns of nutrition. The results of the atomic absorption method were used. 相似文献
7.
O. B. Dobrovolskaya L. A. Pershina L. A. Kravtsova A. I. Shchapova 《Russian Journal of Genetics》2003,39(4):467-470
The effects of rye chromosomes 1R and 5R on androgenesis in cultured anthers of wheat–rye substitution lines was studied as dependent on the cultivar origin of the rye chromosomes and on the wheat genome (A or D) subjected to substitution. Chromosome 1R stimulated embryogenesis in anther cultures, while chromosome 5R suppressed it regardless of whether the corresponding wheat chromosomes were substituted in the A or D genome. The effect of chromosome 1R on embryogenesis proved to depend on its cultivar origin. Along with rye chromosome 1R, wheat chromosome 1A was shown to substantially affect total seedling regeneration. Regeneration of green seedlings was dramatically affected both by rye chromosome 1R and by wheat chromosome 1D. The results supported the published data that individual androgenesis parameters (embryogenesis, total plant regeneration, green plant regeneration) are controlled by different genetic mechanisms. 相似文献
8.
O. B. Dobrovolskaya P. Sourdille M. Bernard E. A. Salina 《Russian Journal of Genetics》2009,45(11):1368-1375
In order to estimate synteny between At and A polyploid wheat genomes belonging to different evolutionary lines (Timopheevi and Emmer), saturation of chromosome
maps of Triticum timopheevii At genome by molecular markers has been conducted. Totally, 179 EST-SSR and 48 genomic SSR-markers have been used with the following
integration of 13 and 7 markers correspondingly into chromosome maps of At genome. ESTSSR showed higher transferability and lower polymorphism than genomic SSR markers. The chromosome maps designed
were compared to maps of homoeologous chromosome group of the T. aestivum A genome. No disturbances of colinearity, i.e., of the order of markers within the chromosome segments on which they had
been previously mapped, were observed. According to the quantity assessment of markers amplifying in homoeologous chromosomes,
the maximum divergence was detected in two groups (4At/4A and 3At/3A) among the seven chromosomes examined in the A t and A genomes. Comparison of molecular genetic mapping results with the published results of studying meiosis of F1 hybrids and the frequency of chromosomes substitution in introgressive T. aestivum × T. timopheevii lines suggest that individual chromosomes of the At and A genomes evolve differently. Translocations were shown to introduce the major impact on the divergence of 4At/4A and 6At/6A chromosomes, while mutations of the primary DNA structure, on the divergence of homoeologous group 3 chromosomes. The
level of reorganization of other chromosomes during the evolution in the At and A genomes was significantly lower. 相似文献
9.
O. G. Silkova O. B. Dobrovolskaya A. I. Shchapova V. K. Shumny 《Russian Journal of Genetics》2009,45(9):1062-1066
Regulation of meiotic restitution in androgenic haploids generated by cultivation of isolated anthers of three wheat-rye substitution
lines 2R(2D)1, 2R(2D)3, and 6R(6A) (Triticum aestivum L., cultivar Saratovskaya 29/Secale cereale L., cultivar Onokhoiskaya) was studied. The presence of rye chromosomes and the absence of homeologous wheat chromosomes
in the haploid plant genome was shown to cause meiotic restitution, as observed in the case of androgenic haploids 6R(6A),
or to inhibit it—in meiosis of haploids 2R(2D)1 and 2R(2D)3. In haploids of lines 2R(2D)1 and 2R(2D)3, the reductional type of division of univalent chromosomes was observed, leading to preferential formation of tetrads. In
haploids of line 6R(6A), the equational type of division of univalents into sister chromatids, resulting in the block of the
second division and formation of diads in approximately 50% of cells, was detected. These results confirm data on the effect
of the genotype of line 2R(2D)1 on the induction of reductional type division of univalents and two-phase meiosis, which were earlier obtained in studies
of meiosis in polyhaploids 2R(2D)1 × S. cereale L., cultivar Onokhoiskaya. 相似文献
10.
P. V. Popryadukhin G. Y. Yukina I. P. Dobrovolskaya E. M. Ivankova V. E. Yudin 《Cell and Tissue Biology》2018,12(3):247-255
Highly porous cylinder-shaped 3D matrices with diameters of 1.3 and 3 mm were obtained by lyophilization of collagen solution. A study in vivo of the mechanism and rate of resorption of the resulting material showed that complete resorption of the matrix occurred 6 weeks after their implantation into liver tissue and 3 weeks after implantation into muscle tissue of animals. Surrounding tissues were not altered or damaged. Histological analysis revealed that, simultaneously with the resorption of matrix collagen, connective tissue and blood vessels were formed. This allows us to recommend the developed porous material based on collagen for use as matrices for tissue engineering and cellular transplantation. 相似文献