oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Search Results: 1 - 10 of 17 matches for " Melotto "
All listed articles are free for downloading (OA Articles)
Page 1 /17
Display every page Item
Jerarquías para el compromiso: Un análisis comparativo de dos ceremonias en escuelas de la Policía de la Provincia de Buenos Aires
Melotto,Mariano;
Intersecciones en antropolog?-a , 2012,
Abstract: this work presents the results of a comparative analysis between two field records of two ceremonies observed in schools of the police of the province of buenos aires during the school cycle 2008-2009. following the comparative offer of fredrik barth, the construction of pertinent dimensions of variation for the proposed cases and the correlation of the same ones, they allow to demonstrate institutional dynamics executed for the construction of the police subjects so much as the dispute among the agents for imposing certain police subjectivity. reached to understand to these schools, in its complexity, as spaces crossed by conflicts and divisions, on the base of a common matrix that is used as value when the circumstances require it.
Jerarquías para el compromiso: Un análisis comparativo de dos ceremonias en escuelas de la Policía de la Provincia de Buenos Aires Hierarchies for the commitment: A comparative analysis of two ceremonies in schools of the Police of the Province of Buenos Aires
Mariano Melotto
Intersecciones en Antropología , 2012,
Abstract: Este trabajo presenta los resultados de un análisis comparativo entre los registros de campo de dos ceremonias observadas en escuelas de la Policía de la Provincia de Buenos Aires durante el ciclo lectivo 2008-2009. Siguiendo la propuesta comparativa de Frederik Barth, la construcción de dimensiones de variación pertinentes para los casos propuestos y la correlación de éstas permiten evidenciar dinámicas institucionales ejecutadas para la construcción de los sujetos policiales, tanto como la disputa entre los agentes por imponer determinada subjetividad policial. Se alcanza así a comprender a estas escuelas en su complejidad, como espacios surcados por conflictos y divisiones, sobre el fondo de una matriz común que se esgrime como valor cuando las circunstancias lo demandan. This work presents the results of a comparative analysis between two field records of two ceremonies observed in Schools of the Police of the province of Buenos Aires during the school cycle 2008-2009. Following the comparative offer of Fredrik Barth, the construction of pertinent dimensions of variation for the proposed cases and the correlation of the same ones, they allow to demonstrate institutional dynamics executed for the construction of the police subjects so much as the dispute among the agents for imposing certain police subjectivity. Reached to understand to these schools, in its complexity, as spaces crossed by conflicts and divisions, on the base of a common matrix that is used as value when the circumstances require it.
A homolog of the RPS2 disease resistance gene is constitutively expressed in Brassica oleracea
Malvas, Celia C.;Melotto, Maeli;Truffi, Daniela;Camargo, Luis E.A.;
Genetics and Molecular Biology , 2003, DOI: 10.1590/S1415-47572003000400015
Abstract: in this study, we identified disease resistance gene homologs in brassica oleracea and assessed their expression in lines resistant and susceptible to xanthomonas campestris pv. campestris (xcc). two dna fragments of approximately 2.5 kb (bi-16/rps2 and lc201/rps2) were amplified by pcr from two brassica lines using primers based on an rps2 homologous sequence previously described in the brassica oleracea ecotype b117. the sequences of these fragments shared high similarity (95-98%) with rps2 homologs from various brassica species. the digestion of these fragments with restriction enzymes revealed polymorphisms at the xba i restriction sites. the length polymorphisms were used as a co-dominant marker in an f2 population developed to segregate for resistance to xcc, the causal agent of black rot. linkage analysis showed no significant association between the marker and quantitative trait loci for black rot. rt-pcr with specific primers yielded an expected 453 bp fragment that corresponded to the rps2 homologs in both resistant and susceptible lines inoculated with the pathogen, as well as in non-inoculated control plants. these results suggest that these homologs are constitutively expressed in b. oleracea.
Molecular battles between plant and pathogenic bacteria in the phyllosphere
Baker, C.M.;Chitrakar, R.;Obulareddy, N.;Panchal, S.;Williams, P.;Melotto, M.;
Brazilian Journal of Medical and Biological Research , 2010, DOI: 10.1590/S0100-879X2010007500060
Abstract: the phyllosphere, i.e., the aerial parts of the plant, provides one of the most important niches for microbial colonization. this niche supports the survival and, often, proliferation of microbes such as fungi and bacteria with diverse lifestyles including epiphytes, saprophytes, and pathogens. although most microbes may complete the life cycle on the leaf surface, pathogens must enter the leaf and multiply aggressively in the leaf interior. natural surface openings, such as stomata, are important entry sites for bacteria. stomata are known for their vital role in water transpiration and gas exchange between the plant and the environment that is essential for plant growth. recent studies have shown that stomata can also play an active role in limiting bacterial invasion of both human and plant pathogenic bacteria as part of the plant innate immune system. as counter-defense, plant pathogens such as pseudomonas syringae pv tomato (pst) dc3000 use the virulence factor coronatine to suppress stomate-based defense. a novel and crucial early battleground in host-pathogen interaction in the phyllosphere has been discovered with broad implications in the study of bacterial pathogenesis, host immunity, and molecular ecology of bacterial diseases.
Phylogenetic relationships in Solanaceae and related species based on cpDNA sequence from plastid trnE-trnT region
Danila Montewka Melotto-Passarin,Irving Joseph Berger,Keini Dressano,Valentina de Fátima De Martin
Crop Breeding and Applied Biotechnology , 2008,
Abstract: Intergenic spacers of chloroplast DNA (cpDNA) are very useful in phylogenetic and population genetic studiesof plant species, to study their potential integration in phylogenetic analysis. The non-coding trnE-trnT intergenic spacer ofcpDNA was analyzed to assess the nucleotide sequence polymorphism of 16 Solanaceae species and to estimate its ability tocontribute to the resolution of phylogenetic studies of this group. Multiple alignments of DNA sequences of trnE-trnT intergenicspacer made the identification of nucleotide variability in this region possible and the phylogeny was estimated by maximumparsimony and rooted with Convolvulaceae Ipomoea batatas, the most closely related family. Besides, this intergenic spacerwas tested for the phylogenetic ability to differentiate taxonomic levels. For this purpose, species from four other families wereanalyzed and compared with Solanaceae species. Results confirmed polymorphism in the trnE-trnT region at different taxonomiclevels.
In silico analysis of Simple Sequence Repeats from chloroplast genomes of Solanaceae species
Evandro Vagner Tambarussi,Danila Montewka Melotto-Passarin,Simone Guidetti Gonzalez,Joice Bissoloti Brigati
Crop Breeding and Applied Biotechnology , 2009,
Abstract: The availability of chloroplast genome (cpDNA) sequences of Atropa belladonna, Nicotiana sylvestris, N.tabacum, N. tomentosiformis, Solanum bulbocastanum, S. lycopersicum and S. tuberosum, which are Solanaceae species,allowed us to analyze the organization of cpSSRs in their genic and intergenic regions. In general, the number of cpSSRs incpDNA ranged from 161 in S. tuberosum to 226 in N. tabacum, and the number of intergenic cpSSRs was higher than geniccpSSRs. The mononucleotide repeats were the most frequent in studied species, but we also identified di-, tri-, tetra-, pentaandhexanucleotide repeats. Multiple alignments of all cpSSRs sequences from Solanaceae species made the identification ofnucleotide variability possible and the phylogeny was estimated by maximum parsimony. Our study showed that the plastomedatabase can be exploited for phylogenetic analysis and biotechnological approaches.
A homolog of the RPS2 disease resistance gene is constitutively expressed in Brassica oleracea
Malvas Celia C.,Melotto Maeli,Truffi Daniela,Camargo Luis E.A.
Genetics and Molecular Biology , 2003,
Abstract: In this study, we identified disease resistance gene homologs in Brassica oleracea and assessed their expression in lines resistant and susceptible to Xanthomonas campestris pv. campestris (Xcc). Two DNA fragments of approximately 2.5 kb (BI-16/RPS2 and Lc201/RPS2) were amplified by PCR from two Brassica lines using primers based on an RPS2 homologous sequence previously described in the Brassica oleracea ecotype B117. The sequences of these fragments shared high similarity (95-98%) with RPS2 homologs from various Brassica species. The digestion of these fragments with restriction enzymes revealed polymorphisms at the Xba I restriction sites. The length polymorphisms were used as a co-dominant marker in an F2 population developed to segregate for resistance to Xcc, the causal agent of black rot. Linkage analysis showed no significant association between the marker and quantitative trait loci for black rot. RT-PCR with specific primers yielded an expected 453 bp fragment that corresponded to the RPS2 homologs in both resistant and susceptible lines inoculated with the pathogen, as well as in non-inoculated control plants. These results suggest that these homologs are constitutively expressed in B. oleracea.
EFFECTS OF SOIL STRUCTURE ON GERMINATION OF Tabebuia heptaphylla SEEDS
Ricardo Anghinoni Bocchese,Ademir Kleber Morbeck de Oliveira,Alex Marcel Melotto,Valtecir Fernandes
CERNE , 2008,
Abstract: Information about seed germination of Cerrado s native species can be important and fundamental regasrding theirpotential use on recuperation process of tropical degraded lands. The objective of this research was to verify the effects of differentsoil structures over seed germination of Tabebuia heptaphylla, in a shaded place. The experiment was carried out in EmbrapaGado de Corte (Campo Grande, Mato Grosso do Sul, Brazil), under a shaded house with meshes that produced 70% shade. Fivedifferent soil treatments were assembled, corresponding to soil s physical characteristics found at this Brazilian savanna (sandy,clayish, sandy + organic material, clayish + organic material and sandy + clayish). The experiment was randomized in blocks,with four repetitions with 60 seeds each one, observed during 30 days. Tukey (5%) test was used and IVG was calculated to verifythe seed germination velocity. Statistical difference was occurred between the treatments (p = 0.0048). The clayish + organicmaterial and clayish soils presented the higher seed germination rate due to the capacity of water retention by these soils and theneed of increased water absorption by the embryo. On sandy soil, the seeds presented the lowest germination percentage, due to thephysical structure of the sandy soil, an also because the higher water absorption and drenage on this soil cause inefficient waterabsorption by the embryo. The lowest germination velocity values were observed on clayish + organic material soil, whereassandy soil presented the higher values.
Remiss?o de sintomas iniciais do declínio de citros pela aplica??o de reguladores vegetais
Prates, H.S.;Castro, P.R.C.;Guirado, N.;Melotto, E.;Muller, G.W.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1988, DOI: 10.1590/S0071-12761988000100016
Abstract: for the experiment 13 year old pera sweet orange on rangpur lime stionic combinations from a plot in the mogi-gua?u county, s?o paulo state, were choosen. all plants showed in january 1984, unilateral brazilian decline (blight) symptoms. the diseased state of the plants was further confirmed by low water uptake. the statistically design was by completely randomized blocks, with 6 treatments, 4 replications and 1 tree per plot. the following growth regulator treatments were applied: 1) check; 2) gibberellic acid (ga) at 100ppm + 2,4-dichlorophenoxyacetic acid (2,4-d) at l0ppm; 3) ga at 50ppm + 2,4-d at 10ppm; 4) ga at 50ppm + naa at 15ppm + biofertilizer at 1ml/lwater; 6) ethyl-5-chlorine 1 h-3-indazolyl acetate (ethilclozate) at 0,1ml/l water. the products were applied in january 85. the growth regulators were applied as foliar sprays to thoroughly wet the leaves. five evaluation on the plant reactions were undertaken, respectively at 100,193,276,346 and 405 days from the first application of the products. the results obtained based on a visual score and kruskal-wallis test showed that treatments with ga at 50ppm + naa at 20ppm, ga at 100ppm + 2,4-d at 10ppm, and ga at 50ppm+naa at 15ppm+ bifertilizer at 1ml/lwater, presented satisfactory degree of symptoms remission that differed statistically from the check. this amelioration however found no parallelism to the results obtained by the water uptake test that still showed low levels. those figures however were a little higher in the treated plants than in the checks. these experiments will be continued for a few more years to determine whether or not the symptoms remission in the foliage is permanent and will lead eventually to the improvement of the whole plant.
A??o de estimulante vegetal na produtividade do arroz (Oryza sativa L: cv. IAC-165)
Dario, G.J.A.;Castro, P.R.C.;Melotto, E.;Lipsi, J.P.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1988, DOI: 10.1590/S0071-12761988000100019
Abstract: this experiment was carried out with the objective of determine the effect of a plant stimulant (respond or reward) in the productivity of oryza sativa cv. iac-165 under field conditions. in the experimental field of e.s.a."luiz de queiroz" in piracicaba, s?o paulo state, it was applied respond in the concentrations of 1.0 l.ha-1 and 1.5 l.ha-1 twice, at panicle initiation and at full bloom, and check treatment. at harvest time it was observed that respond reduced the height of rice plants. respond 1.5 l.ha-1 reduced rice tillering and panicles number per meter. respond 1.0 l.ha-1 increased seeds number per rice panicle. other production parameters were not affected by application of the plant stimulant.
Page 1 /17
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.