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| Registros recuperados: 20 | |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 20 | |
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