Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 20
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Absence of CpG observed/expected ratio depletion in Haemonchus contortus evidences a non-methylated genome. Repositório Alice
NICIURA, S. C. M.; THOLON, P..
Editores: Luiz Lehmann Coutinho, ESALQ/USP; Luciana Correia de Almeida Regitano, Embrapa Pecuária Sudeste; Gerson Barreto Mourão, ESALQ/USP; Aline Silva Mello Cesar, ESALQ/USP; Bárbara Silva Vignato, FZEA/USP; Mirele Daiana Poleti, ESALQ/USP; Wellison Jarles da Silva Diniz, UFSCar.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Epigenetics; DNA methylation; Gastrointestinal nematode; Barber?s pole worm.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1075655
Imagem não selecionada

Imprime registro no formato completo
Age- and quality-dependent DNA methylation correlate with melanin-based coloration in a wild bird ArchiMer
Soulsbury, Carl D.; Lipponen, Anssi; Wood, Kristie; Mein, Charles A.; Hoffman, Joseph I.; Lebigre, Christophe.
Secondary sexual trait expression can be influenced by fixed individual factors (such as genetic quality) as well as by dynamic factors (such as age and environmentally induced gene expression) that may be associated with variation in condition or quality. In particular, melanin-based traits are known to relate to condition and there is a well-characterized genetic pathway underpinning their expression. However, the mechanisms linking variable trait expression to genetic quality remain unclear. One plausible mechanism is that genetic quality could influence trait expression via differential methylation and differential gene expression. We therefore conducted a pilot study examining DNA methylation at a candidate gene (agouti-related neuropeptide: AgRP) in...
Tipo: Text Palavras-chave: AgRP; Coloration; Epigenetics; Heterozygosity; Melanin; Sexual ornament.
Ano: 2018 URL: http://archimer.ifremer.fr/doc/00452/56391/58029.pdf
Imagem não selecionada

Imprime registro no formato completo
Artificially induced autopolyploidy increases genome-wide methylation in grapevine. Repositório Alice
BOSCO, D. D.; SINSKI, I.; MAIA, J. D. G.; RITSCHEL, P. S.; QUECINI, V..
Epigenetic processes are reversible chemical modifications acting on two genetic information-containing targets: DNA, and histones.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Antimitotic agent; Epigenetics; Oryzalin; Tetraploids; Vitis.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1083008
Imagem não selecionada

Imprime registro no formato completo
Assessment of changes in the brca2 and p53 genes in breast invasive ductal carcinoma in northeast Brazil Biol. Res.
Ramalho,Eduardo AVF; Silva-Filho,João LQ; Cartaxo,Marina FS; Cavalcanti,Carmelita BL; Rêgo,Moacyr JBM; Oliveira,Maria BM; Beltrão,Eduardo IC.
BACKGROUND: BRCA protein interacts with at least 13 different proteins that have been implicated with cancer susceptibility and loss of BRCA function is correlated to sensitivity to DNA crosslinking agents in preclinical models. RESULTS: BRCA2 methylation frequency was 44%, p53 Pro22 allele frequency was 32% and heterozygous frequency of Arg/Pro72 genotype was 60% which could be associated as risk factor for metastasis (p = 0.046 OR = 4.190). Regarding to polymorphism of codon 249 the frequency of Arg249 allele presented 82% which was considered not statistically significant. CONCLUSIONS: There was not statistical significance to BRCA2 promoter methylation with any parameters chosen. However, our findings suggest that patients who present heterozygous...
Tipo: Journal article Palavras-chave: Breast cancer; Epigenetics; Metastasis; Methylation; Polymorphism.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100003
Imagem não selecionada

Imprime registro no formato completo
BASiNET - Biological Sequences NETwork: a case study on coding and non-coding RNAs identification. Repositório Alice
ITO, E. A.; KATAHIRA, I.; VICENTE, F. F. da R.; PEREIRA, L. F. P.; LOPES, F. M..
With the emergence of Next Generation Sequencing (NGS) technologies, a large volume of sequence data in particular de novo sequencing was rapidly produced at relatively low costs. In this context, computational tools are increasingly important to assist in the identification of relevant information to understand the functioning of organisms. This work introduces BASiNET, an alignment-free tool for classifying biological sequences based on the feature extraction from complex network measurements. The method initially transform the sequences and represents them as complex networks. Then it extracts topological measures and constructs a feature vector that is used to classify the sequences. The method was evaluated in the classification of coding and...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: RNA-seq; Neurodegenerative diseases; Cardiovascular diseases; Epigenetics; Nucleotides.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1108754
Imagem não selecionada

Imprime registro no formato completo
Characterisation of the methylation pattern in the intragenic CpG island of the IGF2 gene in Bos taurus indicus cumulus cells during in vitro maturation. Repositório Alice
FRANCO, M. M.; FAGUNDES, N. S.; MICHALCZECHEN-LACERDA, V. A.; CAIXETA, E. S.; RODRIGUES, F. de C.; MACHADO, G. M.; FERREIRA, A. R.; DODE, M. A. N..
bitstream/item/180017/1/Franco2014-Article-CharacterisationOfTheMethylati.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cumulus cells; IGF2; In vitromaturation; Bovine; DNA methylation; Epigenetics.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/995151
Imagem não selecionada

Imprime registro no formato completo
Differential expression of the MHM region and of sex-determining-related genes during gonadal development in chicken embryos. Repositório Alice
CAETANO, L. C.; GENNARO, F. G. O.; COELHO, K.; ARAÚJO, F. M.; VILA, R. A.; ARAÚJO, A.; BERNARDO, A. de M.; MARCONDES, C. R.; LOPES, S. M. C. de S.; RAMOS, E. S..
The chicken (Gallus gallus) embryo has been used as a classic model system for developmental studies because of its easy accessibility for surgical manipulation during embryonic development. Sex determination in birds is chromosomally based (ZZ for males and ZW for females); however, the basic mechanism of sex determination is still unknown. Here, the dynamics of expression of candidate genes implicated in vertebrate sex determination and differentiation were studied during embryonic chicken gonadal development. Gene expression profiles were obtained before, during, and after gonadal sex differentiation in females and males for DMRT1, SOX3, SOX9, DAX MHM and sex-determining gene expression in chicken embryos SCII, HINTZ, HINTW, and the male hypermethylated...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Gonad; Development; Chicken; Epigenetics; Dosage compensation.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/985036
Imagem não selecionada

Imprime registro no formato completo
Dynamics in global DNA methylation and endogenous polyamine levels during protocorm-like bodies induction of Cattleya tigrina A. Richard Biological Sciences
Almeida, Vivian; Fraga, Hugo Pacheco de Freitas; Navarro, Bruno Bachiega; Guerra, Miguel Pedro; Pescador, Rosete.
Cattleya tigrina is endemic to the Atlantic forest biome and classified as vulnerable in the Red Book of Brazilian Flora. In vitro techniques comprise valuable tools for the conservation of endangered plant species. The aim of the present study was to evaluate the morphological features, global DNA methylation levels and free polyamines during protocorm-like bodies (PLBs) induction of C. tigrina. Along with that, an efficient protocol for in vitro propagation of this species is proposed. The first evidences of PLBs induction in C. tigrina occurred at seven days in culture, starting from the basal portion of the leaf abaxial surface. A hypomethylation marked the beginning of cell differentiation, followed by an increased global DNA methylation at 35 days in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 2.03.00.00-0; 2.03.03.00-9; 2.03.06.00-8 orchids; Micropropagation; In vitro culture; Epigenetics; PLBs. Botânica.
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36656
Imagem não selecionada

Imprime registro no formato completo
Effects of trichostatina, a chromatin-modifying agent, on meiotic progression of bovine oocytes and embryonic development. Repositório Alice
SARAIVA, N. Z.; OLIVEIRA, C. L.; DEL COLLADO, C. L.; LIMA, M. R. de; VANTINI, R.; MONTEIRO, F. M.; NICIURA, S. C. M.; GARCIA, J. M..
2013
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Epigenetics; Trichostatin A; Oocyte competence.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/975148
Imagem não selecionada

Imprime registro no formato completo
Epigenética no melhoramento genético e reprodução animal. Repositório Alice
FRANCO, M. M..
bitstream/item/169751/1/2571-7501-1-PB.pdf
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Cromatina; Epigenética; Expressão gênica; Animal improvement; Genic expression; Melhoramento animal; Reprodução; Chromatin; Epigenetics; Reproduction.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1083445
Imagem não selecionada

Imprime registro no formato completo
Epigenetically facilitated mutational assimilation: epigenetics as a hub within the inclusive evolutionary synthesis ArchiMer
Danchin, Etienne; Pocheville, Arnaud; Rey, Olivier; Pujol, Benoit; Blanchet, Simon.
After decades of debate about the existence of non-genetic inheritance, the focus is now slowly shifting towards dissecting its underlying mechanisms. Here, we propose a new mechanism that, by integrating non-genetic and genetic inheritance, may help build the long-sought inclusive vision of evolution. After briefly reviewing the wealth of evidence documenting the existence and ubiquity of non-genetic inheritance in a table, we review the categories of mechanisms of parent-offspring resemblance that underlie inheritance. We then review several lines of argument for the existence of interactions between non-genetic and genetic components of inheritance, leading to a discussion of the contrasting timescales of action of non-genetic and genetic inheritance....
Tipo: Text Palavras-chave: Non-genetic inheritance; Inclusive heritability; Epigenetics; Central dogma; Genetic assimilation; Mutation randomness; Inclusive evolutionary synthesis.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00479/59037/62430.pdf
Imagem não selecionada

Imprime registro no formato completo
Expression of disease resistance in genetically modified grapevines correlates with the contents of viral sequences in the T-DNA and global genome methylation. Repositório Alice
BOSCO, D. D.; SINSKI, I.; RITSCHEL, P. S.; CAMARGO, U. A.; FAJARDO, T. V. M.; HARAKAVA, R.; QUECINI, V..
Abstract Increased tolerance to pathogens is an important goal in conventional and biotechnology-assisted grapevine breeding programs worldwide. Fungal and viral pathogens cause direct losses in berry production, but also affect the quality of the final products. Precision breeding strategies allow the introduction of resistance characters in elite cultivars, although the factors determining the plant?s overall performance are not fully characterized. Grapevine plants expressing defense proteins, from fungal or plant origins, or of the coat protein gene of grapevine leafroll-associated virus 3 (GLRaV-3) were generated by Agrobacterium -mediated transformation of somatic embryos and shoot apical meristems. The responses of the transformed lines to pathogen...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Pathogenesis related protein 5; Fungus; Chitinase; Epigenetics; Grapevine leafroll-associated virus 3; Vitis.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1092380
Imagem não selecionada

Imprime registro no formato completo
Fantastically plastic: fish larvae equipped for a new world ArchiMer
Pittman, Karin; Yufera, Manuel; Pavlidis, Michail; Geffen, Audrey J.; Koven, Willian; Ribeiro, Laura; Zambonino, Jose Luiz; Tandler, Amos.
Teleost fish are more diverse than any other vertebrate group, and yet only a limited number of species are fished and farmed globally. Efforts to expand the quantity and diversity of fish produced are hampered by the extreme diversity of ontogenetic responses of fish, especially during larval development. This review looks at advances in molecular phylogeny, endocrine and nutrient influences and long-term studies of the phenotypes of commercially important fish to put the sources and consequences of this plasticity into context. This nested context of evolutionary forces of the fish-specific genome duplication, epigenetic influences, ontogenetically conserved processes like metamorphosis and cell determination is further presented in relation to how fish...
Tipo: Text Palavras-chave: Development; Epigenetics; Fish-specific genome duplication; Juveniles; Larvae; Metamorphosis; Plasticity.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00144/25509/23655.pdf
Imagem não selecionada

Imprime registro no formato completo
Imprinted gene expression in in vivo- and in vitro-produced bovine embryos and chorio-allantoic membranes. Repositório Alice
PERECIN, F.; NICIURA, S. C. M.; FERREIRA, C. R.; MERIGHE, G. K. F.; MEIRELLES, F. V.; GARCIA, J. M..
Cloning by nuclear transfer is often associated with poor results due to abnormal nuclear reprogramming of somatic donor cells and altered gene expression patterns. We investigated the expression patterns of imprinted genes IGF2 and IGF2R in 33- to 36-day bovine embryos and chorio-allantoic membranes derived from in vivo- and in vitro-produced embryos by somatic cell nuclear transfer (SCNT), parthenogenetic activation, and in vitro fertilization (IVF). There was a lower IGF2 expression rate in the SCNT (0.19) and parthenogenetic (0.02) groups when compared to in vivo and IVF embryos (2.01; P < 0.05). In the chorio-allantoic membranes, IGF2 showed a baseline expression pattern (P < 0.05) in parthenotes (0.001) when compared to in vivo, IVF (3.13), and...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cattle; Epigenetics; Genomic imprinting; IGF2; IGF2R; Nuclear transfer.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/256254
Imagem não selecionada

Imprime registro no formato completo
In vitro fertilization (IVF) in mammals: epigenetic and developmental alterations. Scientific and bioethical implications for IVF in humans Biol. Res.
Ventura-Juncá,Patricio; Irarrázaval,Isabel; Rolle,Augusto J; Gutiérrez,Juan I; Moreno,Ricardo D; Santos,Manuel J.
The advent of in vitro fertilization (IVF) in animals and humans implies an extraordinary change in the environment where the beginning of a new organism takes place. In mammals fertilization occurs in the maternal oviduct, where there are unique conditions for guaranteeing the encounter of the gametes and the first stages of development of the embryo and thus its future. During this period a major epigenetic reprogramming takes place that is crucial for the normal fate of the embryo. This epigenetic reprogramming is very vulnerable to changes in environmental conditions such as the ones implied in IVF, including in vitro culture, nutrition, light, temperature, oxygen tension, embryo-maternal signaling, and the general absence of protection against foreign...
Tipo: Journal article Palavras-chave: In vitro fertilization (IVF) in mammals; Epigenetics; Developmental alterations; Bioethical implications.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100068
Imagem não selecionada

Imprime registro no formato completo
Parallel epigenetic modifications induced by hatchery rearing in a Pacific Salmon ArchiMer
Le Luyer, Jeremy; Laporte, Martin; Beacham, Terry D.; Kaukinen, Karia H.; Withler, Ruth E.; Leong, Jong S.; Rondeau, Eric B.; Koop, Ben F.; Bernatchez, Louis.
A puzzling question in conservation biology is how to maintain overall fitness of individuals  bred in captive environment upon release into the wild, especially for rehabilitating declining or threatened species [1,2]. For salmonid species, a heritable change in fitness related traits and gene expression has been reported to occur in a single generation of captivity in hatchery environment [3–5]. Such rapid changes are congruent with models of  inadvertent domestication selection which may lead to maladaptation in the natural environment [4]. Arguably, the underlying mechanism by which captivity may induce  fitness difference between wild and captive congeners is still poorly understood. Short- term selection on complex phenotypic traits is expected to...
Tipo: Text Palavras-chave: Epigenetics; Methylation; Coho salmon; Hatchery; RAD sequencing.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00409/52050/52722.pdf
Imagem não selecionada

Imprime registro no formato completo
Perfil transcricional de genes relacionados com a reprogramação da metilação do DNA em placenta de bovinos clones. Repositório Alice
VARGAS, L. N..
bitstream/item/187241/1/PerfilTranscricionalGenes.pdf
Tipo: Tese/dissertação (ALICE) Palavras-chave: Transferência nuclear de células somáticas; Expressão gênica; Epigenética; Metilação do DNA; Somatic Cell Nuclear Transfer; Cloning; DNMT; TET; Ácido desoxirribonucleico; Clonagem; Placenta; Genética; DNA methylation; Epigenetics; Gene expression.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1100281
Imagem não selecionada

Imprime registro no formato completo
The control of bud break and flowering time in plants: contribution of epigenetic mechanisms and consequencesin agriculture and breeding. Infoteca-e
CATTANI, A. M.; SARTOR, T.; FALAVIGNA, V. da S.; PORTO, D. D.; SILVEIRA, C. P.; OLIVEIRA, P. R. D. de; REVERS, L. F..
In perennial plants, the release of bud dormancy, with subsequentflowering, resemblesthe vernalization process ofArabidopsis thalianaand cereals. Especially for perennialcrops from temperate regions, dormancy is an important adaptive trait for both survivaland growth. Exposure to sufficient chilling during winter dormancy ensures the normalphenological traits in subsequent growing periods. Here, we compile research data onmechanisms controlling the overlapping developmental processes that definedormancy induction, maintenance and release, bud burst andflowering. Recentfind-ings highlight the relevance of genome-wide epigenetic modifications related todormancy events, and more specifically the epigenetic regulation ofDORMANCY-ASSO-CIATED MADS-box,FLOWERING...
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Dormancy; Flowering; Epigenetics; Chromatin.
Ano: 2018 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1109792
Imagem não selecionada

Imprime registro no formato completo
The Cytoplasm Affects the Epigenome in Drosophila melanogaster ArchiMer
Grunau, Christoph; Voigt, Susanne; Dobler, Ralph; Dowling, Damian K.; Reinhardt, Klaus.
Cytoplasmic components and their interactions with the nuclear genome may mediate patterns of phenotypic expression to form a joint inheritance system. However, proximate mechanisms underpinning these interactions remain elusive. To independently assess nuclear genetic and epigenetic cytoplasmic effects, we created a full-factorial design in which representative cytoplasms and nuclear backgrounds from each of two geographically disjunct populations of Drosophila melanogaster were matched together in all four possible combinations. To capture slowly-accumulating epimutations in addition to immediately occurring ones, these constructed populations were examined one year later. We found the K4 methylation of histone H3, H3K4me3, an epigenetic marker...
Tipo: Text Palavras-chave: Epigenetics; Mitochondria; Mito-nuclear coevolution; Wolbachia.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00478/58935/62427.pdf
Imagem não selecionada

Imprime registro no formato completo
The role of CCCTC-Binding Factor (CTCF) in genomic imprinting, development, and reproduction. Repositório Alice
FRANCO, M. M.; PRICKETT, A. R.; OAKEY, R. J..
2014
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Assisted reproductive technology; Chromatin; Early development; Epigenetics; Genomic imprinting.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1003402
Registros recuperados: 20
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional