Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 19
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
A hybrid zone between Bathymodiolus mussel lineages from eastern Pacific hydrothermal vents ArchiMer
Johnson, Shannon B.; Won, Yong-jin; Harvey, Julio B. J.; Vrijenhoek, Robert C..
Background: The inhabitants of deep-sea hydrothermal vents occupy ephemeral island-like habitats distributed sporadically along tectonic spreading-centers, back-arc basins, and volcanically active seamounts. The majority of vent taxa undergo a pelagic larval phase, and thus varying degrees of geographical subdivision, ranging from no impedance of dispersal to complete isolation, often exist among taxa that span common geomorphological boundaries. Two lineages of Bathymodiolus mussels segregate on either side of the Easter Microplate, a boundary that separates the East Pacific Rise from spreading centers connected to the Pacific-Antarctic Ridge. Results: A recent sample from the northwest flank of the Easter Microplate contained an admixture of northern...
Tipo: Text Palavras-chave: Bathymodiolus antarcticus n. sp; Hybridization; Recombination; Linkage disequilibrium; Deep-sea; Hydrothermal vent; Bathymodiolus thermophilus.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00185/29626/28000.pdf
Imagem não selecionada

Imprime registro no formato completo
A model for the RecA protein of Mycoplasma synoviae Genet. Mol. Biol.
Fonseca,Marbella Maria; Alarcon,Frank J.B.; Vasconcelos,Ana Tereza de; Agnez-Lima,Lucymara Fassarela.
In this work, we predict a structural model for the RecA protein from M. synoviae (MsRecA) by theoretical homology modeling and evaluate the occurrence of polymorphisms in this protein within several isolates of this species. The structural model suggested for MsRecA conserves the main domains present in MtRecA and EcRecA. The L1 and L2 regions showed six and three amino acid substitutions, respectively, which apparently do not affect the conformation and function of MsRecA. The C-terminal domain is shorter than that found in EcRecA and MtRecA, which may increase its capacity to bind dsDNA and displace SSB, compensating the absence of recombination initiation enzymes. The MS59 isolate RecA sequence showed one polymorphism which does not affect its...
Tipo: Info:eu-repo/semantics/article Palavras-chave: DNA repair; Recombination; RecA; Mycoplasma synoviae.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000200018
Imagem não selecionada

Imprime registro no formato completo
Biological and molecular characterization of two Brazilian isolates of Apple stem grooving virus. Repositório Alice
SOUZA, E. B.; NICKEL, O.; FAJARDO, T. V. M.; SILVA, J. M. F.; BARROS, D. R..
Abstract Apple stem grooving virus (ASGV, genus Capillovirus) is disseminated worldwide, usually causing a latent infection in most commercial apple cultivars. However, infected scions grafted onto sensitive material display reduction of yield, loss of fruit quality and tree decline. In Brazil ASGV is associated with severe phloem necrosis, xylem pitting and decline of apple trees on Maruba-kaido (Malus prunifolia cv. Ringo) rootstocks usually in a complex with other latent viruses. Two Brazilian ASGV isolates from a mixed infection causing differing reactions on apple cv. Fuji on Maruba-kaido rootstocks, i.e., normal growth vs. tree decline, have been completely sequenced. The differing intensity of symptoms they co-induced on several woody indicator...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Apple virus; ASGV (Apple stem grooving virus); Recombination; Phylogenetic analysis.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1071609
Imagem não selecionada

Imprime registro no formato completo
Characterization and genetic variability of coat protein genes of Apple chlorotic leaf spot virus isolates from southern Brazil. Repositório Alice
NICKEL, O.; SILVA, F. N; FAJARDO, T. V. M.; GORAYEB, E. S..
Abstract Apple chlorotic leaf spot virus(ACLSV) infects temperate rosaceous fruit trees worldwide and causes a wide range of diseases that are economically highly damaging. This study was carried out to analyze genetic variability of regional ACLSV isolates and compare it with ACLSV isolates from other parts of the world. Nineteen amplicons of ACLSV, corresponding to the coat protein (CP) gene of isolates from apple, plum, and nectarine, from two states in southern Brazil, have been analyzed for genetic variation and compared phylogenetically among themselves and with other sequences available in GenBank. Sequences identities among complete CP genes of these isolates ranged from 87.5 to 100% and 92.2 to 100% at the nucleotide (nt) and the deduced amino...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Molecular characterization; Recombination; Selection; Temperate rosaceous fruit trees; ACLSV (Apple chlorotic leaf spot virus); Apple; Variability; Phylogeny; Genetic recombination.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080993
Imagem não selecionada

Imprime registro no formato completo
Efficiency of pathotype mixture in screening for Downy Mildew resistance in Pearl Millet Open Agri
Sharma, Y.K..
Palavras-chave: Millets; Recombination; Fungi; Replication; Planting; Breeds (animals); Pathogens; Diseases; Hybrids; Application methods.
Ano: 2006 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3208
Imagem não selecionada

Imprime registro no formato completo
Engineering Escherichia coli for autoinducible production of n-butanol Electron. J. Biotechnol.
Wang,Qinglong; ding,Yi; Liu,Li; Shi,Jiping; Sun,Junsong; Xue,Yongchang.
Background Escherichia coli does not produce n-butanol naturally, but can be butanologenic when related enzymes were expressed using inducible elements on plasmids. In this study we attempted to confer E. coli strain capability of automatic excretion of the chemical by employing a native anaerobic promoter. Also, a novel DNA kit was designed for PCR preparation of linear DNA fragments to perform strain modification. The kit is primarily composed of two mother vectors, co-transformation of linear DNAs into E. coli can simultaneously introduce two butanol synthetic operons into the chromosome and create two in-frame gene deletions at targeted native loci. Results E. coli strain Bw2V carries plasmid pCNA-PHC and pENA-TA, both utilizes native anaerobic...
Tipo: Journal article Palavras-chave: Anaerobic promoter; Escherichia coli; Metabolic engineering; N-Butanol; Recombination.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000200013
Imagem não selecionada

Imprime registro no formato completo
Estimating genomic instability mediated by Alu retroelements in breast cancer Genet. Mol. Biol.
Fazza,Ana Cristina; Sabino,Flavia Cal; Setta,Nathalia de; Bordin Jr.,Newton Antonio; Silva,Eloiza Helena Tajara da; Carareto,Claudia Marcia Aparecida.
Alu-PCR is a relatively simple technique that can be used to investigate genomic instability in cancer. This technique allows identification of the loss, gain or amplification of gene sequences based on the analysis of segments between two Alu elements coupled with quantitative and qualitative analyses of the profiles obtained from tumor samples, surgical margins and blood. In this work, we used Alu-PCR to identify gene alterations in ten patients with invasive ductal breast cancer. Several deletions and insertions were identified, indicating genomic instability in the tumor and adjacent normal tissue. Although not associated with specific genes, the alterations, which involved chromosomal bands 1p36.23, 1q41, 11q14.3, 13q14.2, occurred in areas of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alu-PCR; Breast cancer; Gene insertions; Gene deletions; Invasive ductal carcinoma; Recombination.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100004
Imagem não selecionada

Imprime registro no formato completo
Further molecular characterization of weed-associated begomoviruses in Brazil with an emphasis on Sida spp Planta Daninha
Tavares,S.S.; Ramos-Sobrinho,R.; González-Aguilera,J.; Lima,G.S.A.; Assunção,I.P.; Zerbini,F.M.
Begomoviruses are whitefly-transmitted, single-stranded DNA viruses that are often associated with weed plants. The aim of this study was to further characterize the diversity of begomoviruses infecting weeds (mostly Sida spp.) in Brazil. Total DNA was extracted from weed samples collected in Viçosa (Minas Gerais state) and in some municipalities of Alagoas state in 2009 and 2010. Viral genomes were amplified by RCA, cloned and sequenced. A total of 26 DNA-A clones were obtained. Sequence analysis indicated the presence of 10 begomoviruses. All viral isolates from Blainvillea rhomboidea belonged to the same species, Blainvillea yellow spot virus (BlYSV ), thereby suggesting that BlYSV may be the only begomovirus present in this weed species. Four isolates...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Geminivirus; Recombination; Blainvillea rhomboidea; Sida micrantha; Sida urens; Sida santaremnensis.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000200009
Imagem não selecionada

Imprime registro no formato completo
Genetic diversity of symbiotic Bradyrhizobium Elkanii populations recovered from inoculated and non-inoculated Acacia Mangium field trials in Brazil. Repositório Alice
PEREZ, D. V.; PERRINEAU, M. M.; ROUXA, C. Le; GALIANAA, A.; Y.PRINA; FARIA, S. M. de; G. BÉNA; BALIEIRO, F. de C..
2011
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Bradyrhizobium elkanii; Nitrogen fixation; Controlled inoculation; Molecular systematics; Recombination; Acacia mangium.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/918320
Imagem não selecionada

Imprime registro no formato completo
Highly diverse recombining populations of Vibrio cholerae and Vibrio parahaemolyticus in French Mediterranean coastal lagoons ArchiMer
Esteves, Kevin; Mosser, Thomas; Aujoulat, Fabien; Hervio-heath, Dominique; Monfort, Patrick; Jumas-bilak, Estelle.
Vibrio parahaemolyticus and Vibrio cholerae are ubiquitous to estuarine and marine environments. Thes two species found in Mediterranean coastal systems can induce infection in humans. Environmental isolates of V. cholerae (n = 109) and V. parahaemotycius (n = 89) sampled at different dates, stations and water salinities were investigated for virulence genes and by a mutilocus sequence-based analysis (MLSA). V. cholerae isolate were all ctxA negative and only one isolate of V. parahaemolyticus displayed trh2 gene. Most Sequence Types (ST) corresponded to uique ST isolated at one date or one station. Frequent recombination events were detected among different pathogenic species, V. parahaemotyticus, V. cholerae, Vibrio mimicus, and Vibrio metoecus....
Tipo: Text Palavras-chave: Vibrio; Human pathogens; French coastal lagoons; Phylogeny; Recombination; Multi-locus sequence analysis; Virulence factor.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00274/38528/37039.pdf
Imagem não selecionada

Imprime registro no formato completo
Milk and fat production of crossbred Holstein-Gir cows (Bos taurus taurus-Bos taurus indicus) in the agreste region of the Brazilian state of Pernambuco Genet. Mol. Biol.
Barbosa,Severino B.P.; Ramalho,Ricardo P.; Monardes,Humberto G.; Dias,Flávio M.; Santos,Djalma C. dos; Batista,Ângela M.V..
The productive performance of four Holstein-Gir genetic groups (1/2H, 1/4H, 5/8H, 5/8Hinter se) and the effects of non-genetic factors on production traits was evaluated using a data set of 7,951 test-day samples collected between January 1980 and December 1999 from the Arcoverde Experimental Station in the Brazilian state of Pernambuco (Empresa Pernambucana de Pesquisa Agropecuária). The statistical model included the fixed effects of calving year (1980 to 1999) and month (January to December), genetic group of the cow, age at months of calving (33 to 190) and days in milk at each test-day. Random effects were sire, cow and residual with test-days treated as repeated records within each cow within each lactation. For the four genetic groups the milk yield...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic groups; Epistasis; Genetics groups; Recombination; Repeated measures; Test-day.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000300012
Imagem não selecionada

Imprime registro no formato completo
Molecular epidemiology and evolution of avian infectious bronchitis virus Rev. Bras. Ciênc. Avic.
Montassier,HJ.
Mutation and recombination processes are involved in the genetic and phenotypic variations of RNA viruses, leading to the emergence of new variant strains, and give rise to virus population diversity to be modeled by the host, particularly by the immune system, as occurred with infectious bronchitis virus (IBV) in chickens. The consequence is a continuous emergence of new IBV variants with regard to pathotypes, serotypes, and protectotypes. Nucleotide sequencing and subsequent genetic analysis of the S1 and N protein gene sequences provide a fast and accurate method to classify and predict IBV genotype, and a powerful instrument to monitor phylogenetic and epidemiological evolution of IBV variants. Despite the use of vaccination programmes, infectious...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chicken; Coronavirus; Genetic evolution; Mutation; Prophylaxis; Recombination; Variant strains.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200003
Imagem não selecionada

Imprime registro no formato completo
Molecular strategies to use nuclear male sterility in plant hybrid breeding International Rice Research Institute
Li, X. Q.; Yuan, L. P..
p.10-12
Palavras-chave: Male sterility; Genes; Genetic transformation; Plastids; Gene expression; Promoters; Recombination; Plant breeding; Molecular genetics.
Ano: 2004 URL: http://hdl.handle.net/123456789/924
Imagem não selecionada

Imprime registro no formato completo
Monomorphic subtelomeric DNA in the filamentous fungus, Metarhizium anisopliae, contains a RecQ helicase-like gene. Repositório Alice
INGLIS, P. W.; RIGDEN, D. J.; MELLO, L. V.; LOUIS, E. J.; VALADARES-INGLIS, M. C..
In most filamentous fungi, telomere-associated sequences (TASs) are polymorphic, and the presence of restriction fragment length polymorphisms (RFLPs) may permit the number of chromosome ends to be estimated from the number of telomeric bands obtained by restriction digestion. Here, we describe strains of Metarhizium, Gliocladium and Paecilomyces species in which only one or a few telomeric bands of unequal intensity are detectable by Southern hybridization, indicating that interchromosomal TAS exchange occurs. We also studied an anomalous strain of Metarhizium anisopliae, which produces polymorphic telomeric bands larger than 8 kb upon digestion of genomic DNA with XhoI. In this case, the first XhoI site in from the chromosome end must lie beyond the...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: RecQ helicase; Telomere associated sequence; Recombination; Fungo; Metarhizium Anisopliae.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/185898
Imagem não selecionada

Imprime registro no formato completo
New world Cactaceae plants harbor diverse Geminiviruses. Repositório Alice
FONTENELE, R. S.; SALYWON, A. M.; MAJURE, L. C.; COBB, I. N.; BHASKARA, A.; AVALOS-CALLEROS, J. A.; ARGÜELLO-ASTORGA, G. R.; SCHMIDLIN, K.; KHALIFEH, A.; SMITH, K.; SCHRECK, J.; LUND, M. C.; KÖHLER, M.; WOJCIECHOWSKI, M. F.; HODGSON, W. C.; PUENTE-MARTINEZ, R.; VAN DOORSLAER, K.; KUMARI, S.; OYENIRAN, K. A.; VERNIÈRE, C.; FILLOUX, D.; ROUMAGNAC, P.; LEFEUVRE, P.; RIBEIRO, S. G.; KRABERGER, S. P.; MARTIN, D. P.; VARSANI, A..
bitstream/item/223376/1/viruses-13-00694-v2-1.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Recombination; Diversity; Cactaceae; Geminiviridae; Becurtovirus.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1131955
Imagem não selecionada

Imprime registro no formato completo
PCR-mediated recombination in development of microsatellite markers: mechanism and implications Genet. Mol. Biol.
Roratto,Paula A.; Buchmann,Darine; Santos,Sandro; Bartholomei-Santos,Marlise L..
Protocols for microsatellite-enrichment libraries have been widely applied to several species in order to supply the most informative molecular markers for population and inbreeding studies. One drawback of these protocols is the ratio of designed primer pairs that fail to amplify the expected fragment, even after exhaustive optimization attempts. A possible cause of unsuccessful microsatellite primers may be that such loci are artifacts resulting from chimeric PCR products, instead of real genomic sequences. The microsatellite-enriched library constructed for Aegla longirostri (Crustacea, Decapoda, Anomura) showed that 29% of sequenced clones were chimeric products because these sequences shared one of the flanking regions around the same repeat motif but...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Chimeric PCR product; Microsatellite isolation; Recombination; Simple sequence repeats (SSR).
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000100012
Imagem não selecionada

Imprime registro no formato completo
Positive selection, molecular recombination structure and phylogenetic reconstruction of members of the family Tombusviridae: implication in virus taxonomy Genet. Mol. Biol.
Boulila,Moncef.
A detailed study of putative recombination events and their evolution frequency in the whole genome of the currently known members of the family Tombusviridae, comprising 79 accessions retrieved from the international databases, was carried out by using the RECCO and RDP version 3.31β algorithms. The first program allowed the detection of potential recombination sites in seven out of eight virus genera (Aureusvirus, Avenavirus, Carmovirus, Dianthovirus, Necrovirus, Panicovirus, and Tombusvirus), the second program provided the same results except for genus Dianthovirus. On the other hand, both methods failed to detect recombination breakpoints in the genome of members of genus Machlomovirus. Furthermore, based on Fisher's Exact Test of Neutrality, positive...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioinformatics; Phylogeny; Recombination; Positive selection; Tombusviridae; Sequence; Taxonomy.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400018
Imagem não selecionada

Imprime registro no formato completo
Unveiling crucivirus diversity by mining metagenomic data. Repositório Alice
DE LA HIGUERA, I.; KASUN, G. W.; TORRANCE, E. L.; PRATT, A. A.; MALUENDA, A.; COLOMBET, J.; BISSEUX, M.; RAVET, V.; DAYARAM, A.; STAINTON, D.; KRABERGER, S.; SAWAR-REZA, P.; GOLDSTIEN, S.; BRISKIE, J. V.; WHITE, R.; TAYLOR, H.; GOMEZ, C.; AINLEY, D. G.; HARDING, J. S.; FONTENELE, R. S.; SCHRECK, J.; RIBEIRO, S. G.; OSWALD, S. A.; ARNOLD, J. M.; ENAULT, F.; VARSANI, A.; STEDMAN, K. M..
bitstream/item/216483/1/mBio-2020-de-la-Higuera-e01410-20.full.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Crucivirus; CRESS-DNA viruses; Recombination; Virus evolution; Environmental virology; Gene transfer.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1125352
Imagem não selecionada

Imprime registro no formato completo
Wolbachia in guilds of Anastrepha fruit flies (Tephritidae) and parasitoid wasps (Braconidae) Genet. Mol. Biol.
Mascarenhas,Rodrigo O; Prezotto,Leandro F; Perondini,André Luiz P; Marino,Celso Luiz; Selivon,Denise.
Abstract The endosymbiont Wolbachia is efficiently transmitted from females to their progenies, but horizontal transmission between different taxa is also known to occur. Aiming to determine if horizontal transmission might have occurred between Anastrepha fruit flies and associated braconid wasps, infection by Wolbachia was screened by amplification of a fragment of the wsp gene. Eight species of the genus Anastrepha were analyzed, from which six species of associated parasitoid wasps were recovered. The endosymbiont was found in seven Anastrepha species and in five species of braconids. The WSP Typing methodology detected eight wsp alleles belonging to Wolbachia supergroup A. Three were already known and five were new ones, among which four were found to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacteria; Fruit flies; Horizontal transmission; Wsp gene; Recombination.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000400600
Registros recuperados: 19
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