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Search Results: 1 - 10 of 344821 matches for " Maria Fátima Grossi de;Goldman "
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Eficiência Reprodutiva e Produtiva em Rebanhos Leiteiros Comerciais Monitorados por Sistema Informatizado
Grossi, Selma de Fátima;Freitas, Maria Armênia Ramalho de;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000600006
Abstract: the objectives of this work were to evaluate the productive and reproductive efficiencies and also the genetics parameters for traits considered, using data from 1877 crossbreed cows (holstein x zebu) from four genetics groups. the cows belonged to three commercial dairy herds monitored from 1989 to 1998 by the dairy information system (daisy). the data were processed using the procedure available in sas (statistical analysis system), while genetic parameters on productive and reproductive traits were estimated by the multiple trait derivative-free restricted maximum likelihood method (mtdfreml). effects of genetic group and calving year were significant for age at first calving (afc), interval from calving to first service (icfs), lactation length (ll), milk production (my) and milk production per day of calving interval (myci). the estimates of heritability (h2) for all reproductive traits were near zero in agreement with others studies indicating that these traits are mostly determined by management practices. the h2 estimates for milk yield (my) were 0.28, this means that the additive genetic variance is middle. the genetic correlations (rg) between my and ll of 0.81 could be considered high.
Eficiência Reprodutiva e Produtiva em Rebanhos Leiteiros Comerciais Monitorados por Sistema Informatizado
Grossi Selma de Fátima,Freitas Maria Armênia Ramalho de
Revista Brasileira de Zootecnia , 2002,
Abstract: O estudo foi conduzido com os objetivos de analisar o desempenho produtivo e algumas medidas de eficiência reprodutiva de 1877 vacas provenientes de quatro grupos genéticos Holandês fraction three-quarters Zebu e estimar os parametros genéticos pertinentes. Os animais pertenciam a três rebanhos comerciais que foram monitorados pelo Sistema Computacional de Informa o DAISY (The Dairy Information System), durante período de 1989 a 1998. Para consistência dos dados, forma o dos arquivos e análises preliminares foram usados os procedimentos disponíveis no SAS (Statistical Analysis System), enquanto os componentes de (co)variancia foram estimados pelo método de máxima verossimilhan a restrita livre de derivada (MTDFREML), sob um modelo animal. Os efeitos de grupo genético e ano do parto foram significativos sobre a idade da vaca ao primeiro parto (IPC), intervalo parto - primeiro servi o (PP1S), dura o da lacta o(DL), produ o total de leite (PT) e produ o de leite por dia de intervalo de parto (PLIEP). As estimativas de herdabilidade (h2) para as características reprodutivas ficaram próximas de zero, evidenciando grande dependência do manejo oferecido aos rebanhos, enquanto o valor de 0,28 para a h2 da PT mostrou variancia genética aditiva média. A correla o genética entre PT e DL de 0,81 pode ser considerada de alta magnitude.
Cholesterol oxidase interference on the emergence and viability of cotton boll weevil larvae
Santos Roseane Cavalcanti,Monnerat Rose Gomes,Maria de Fátima Grossi de,Cordeiro Célia Maria Torres
Pesquisa Agropecuária Brasileira , 2002,
Abstract: The aim of this work was to evaluate the influence of the enzyme cholesterol oxidase (Coase) on emergence and viability of larvae of the cotton boll weevil (Anthonomus grandis Boheman, 1843). A series of bioassays was performed with eggs and neonate larvae exposed to different enzyme concentrations in artificial diet. Larval survival was affected at all enzyme concentrations tested, and the six-day LD50 was 53 mug/mL (CI 95%: 43-59). Coase also interfered with hatching of larvae after eggs were floated for 15 min in Coase solution at different concentrations. Observations at the light and electronic microscopic level of midguts from larvae fed on artificial diet containing 53 mug/mL of Coase and collected at six days revealed highly vacuolated regions in the epithelial cells as well as partial degradation of the basal membrane and microvilli.
Brazilian coffee genome project: an EST-based genomic resource
Vieira, Luiz Gonzaga Esteves;Andrade, Alan Carvalho;Colombo, Carlos Augusto;Moraes, Ana Heloneida de Araújo;Metha, ?ngela;Oliveira, Angélica Carvalho de;Labate, Carlos Alberto;Marino, Celso Luis;Monteiro-Vitorello, Claúdia de Barros;Monte, Damares de Castro;Giglioti, éder;Kimura, Edna Teruko;Romano, Eduardo;Kuramae, Eiko Eurya;Lemos, Eliana Gertrudes Macedo;Almeida, Elionor Rita Pereira de;Jorge, érika C.;Albuquerque, érika V. S.;Silva, Felipe Rodrigues da;Vinecky, Felipe;Sawazaki, Haiko Enok;Dorry, Hamza Fahmi A.;Carrer, Helaine;Abreu, Ilka Nacif;Batista, Jo?o A. N.;Teixeira, Jo?o Batista;Kitajima, Jo?o Paulo;Xavier, Karem Guimar?es;Lima, Liziane Maria de;Camargo, Luis Eduardo Aranha de;Pereira, Luiz Filipe Protasio;Coutinho, Luiz Lehmann;Lemos, Manoel Victor Franco;Romano, Marcelo Ribeiro;Machado, Marcos Antonio;Costa, Marcos Mota do Carmo;Sá, Maria Fátima Grossi de;Goldman, Maria Helena S.;Ferro, Maria Inês T.;Tinoco, Maria Laine Penha;Oliveira, Mariana C.;Van Sluys, Marie-Anne;Shimizu, Milton Massao;Maluf, Mirian Perez;Eira, Mirian Therezinha Souza da;Guerreiro Filho, Oliveiro;Arruda, Paulo;Mazzafera, Paulo;Mariani, Pilar Drummond Sampaio Correa;Oliveira, Regina L.B.C. de;Harakava, Ricardo;Balbao, Silvia Filippi;Tsai, Siu Mui;Mauro, Sonia Marli Zingaretti di;Santos, Suzana Neiva;Siqueira, Walter José;Costa, Gustavo Gilson Lacerda;Formighieri, Eduardo Fernandes;Carazzolle, Marcelo Falsarella;Pereira, Gon?alo Amarante Guimar?es;
Brazilian Journal of Plant Physiology , 2006, DOI: 10.1590/S1677-04202006000100008
Abstract: coffee is one of the most valuable agricultural commodities and ranks second on international trade exchanges. the genus coffea belongs to the rubiaceae family which includes other important plants. the genus contains about 100 species but commercial production is based only on two species, coffea arabica and coffea canephora that represent about 70 % and 30 % of the total coffee market, respectively. the brazilian coffee genome project was designed with the objective of making modern genomics resources available to the coffee scientific community, working on different aspects of the coffee production chain. we have single-pass sequenced a total of 214,964 randomly picked clones from 37 cdna libraries of c. arabica, c. canephora and c. racemosa, representing specific stages of cells and plant development that after trimming resulted in 130,792, 12,381 and 10,566 sequences for each species, respectively. the ests clustered into 17,982 clusters and 32,155 singletons. blast analysis of these sequences revealed that 22 % had no significant matches to sequences in the national center for biotechnology information database (of known or unknown function). the generated coffee est database resulted in the identification of close to 33,000 different unigenes. annotated sequencing results have been stored in an online database at http://www.lge.ibi.unicamp.br/cafe. resources developed in this project provide genetic and genomic tools that may hold the key to the sustainability, competitiveness and future viability of the coffee industry in local and international markets.
Cholesterol oxidase interference on the emergence and viability of cotton boll weevil larvae
Santos, Roseane Cavalcanti;Monnerat, Rose Gomes;Sá, Maria de Fátima Grossi de;Cordeiro, Célia Maria Torres;Gomes, Ana Cristina;Gander, Eugen Silvano;
Pesquisa Agropecuária Brasileira , 2002, DOI: 10.1590/S0100-204X2002001100002
Abstract: the aim of this work was to evaluate the influence of the enzyme cholesterol oxidase (coase) on emergence and viability of larvae of the cotton boll weevil (anthonomus grandis boheman, 1843). a series of bioassays was performed with eggs and neonate larvae exposed to different enzyme concentrations in artificial diet. larval survival was affected at all enzyme concentrations tested, and the six-day ld50 was 53 mg/ml (ci 95%: 43-59). coase also interfered with hatching of larvae after eggs were floated for 15 min in coase solution at different concentrations. observations at the light and electronic microscopic level of midguts from larvae fed on artificial diet containing 53 mg/ml of coase and collected at six days revealed highly vacuolated regions in the epithelial cells as well as partial degradation of the basal membrane and microvilli.
Mutants of common bean alpha-amylase inhibitor-2 as an approach to investigate binding specificity to alpha-amylases
Silva, Maria Cristina Mattar da;Mello, Luciane Vieira;Coutinho, Marise Ventura;Rigden, Daniel John;Neshich, Goran;Chrispeels, Maarten John;Grossi-de-Sá, Maria Fátima;
Pesquisa Agropecuária Brasileira , 2004, DOI: 10.1590/S0100-204X2004000300001
Abstract: despite the presence of a family of defense proteins, phaseolus vulgaris can be attacked by bruchid insects resulting in serious damage to stored grains. the two distinct active forms of a-amylase inhibitors, a-ai1 and a-ai2, in p. vulgaris show different specificity toward a-amylases. zabrotes subfasciatus a-amylase is inhibited by a-ai2 but not by a-ai1. in contrast, porcine a-amylase is inhibited by a-ai1 but not by a-ai2. the objective of this work was to understand the molecular basis of the specificity of two inhibitors in p. vulgaris (a-ai1 and a-ai2) in relation to a-amylases. mutants of a-ai2 were made and expressed in tobacco plants. the results showed that all the a-ai2 mutant inhibitors lost their activity against the insect a-amylases but none exhibited activity toward the mammalian a-amylase. the replacement of his33 of a-ai2 with the a-ai1-like sequence ser-tyr-asn abolished inhibition of z. subfasciatus a-amylase. from structural modeling, the conclusion is that the size and complexity of the amylase-inhibitor interface explain why mutation of the n-terminal loop and resultant abolition of z. subfasciatus a-amylase inhibition are not accompanied by gain of inhibitory activity against porcine a-amylase.
Effect of Jatropha gossypiifolia leaf extracts on three Lepidoptera species
VALENCIA J,ARNUBIO; FRéROT,BRIGITTE; GUéNEGO,HERVE; MúNERA,DIEGO F; GROSSI DE,MARIA FáTIMA; PAUL-ANDRé,CALATAYUD;
Revista Colombiana de Entomología , 2006,
Abstract: leaf extracts of jatropha gossypiifolia l. (euphorbiaceae) contain compounds that are toxic to insects. in this study, these extracts were tested against larvae of three lepidopteran species, busseola fusca (fuller) (lepidoptera: noctuidae), ostrinia nubilalis hubner (lepidoptera: pyralidae) and sesamia nonagrioides lef. (lepidoptera: noctuidae), which are important pests of maize in africa, europe and mediterranean countries, respectively. leaf extracts were shown to be highly toxic to neonate larvae of b. fusca and o. nubilalis quickly after they were ingested. in contrast, no effect was found on fourth instar o. nubilalis and a low level of toxicity was observed on neonates of s. nonagrioides . given the toxicity of j. gossypiifolia to larval neonates of b. fusca and o. nubilalis , this extract can be used for the control of these species when they are colonizing the plant.
Antibacterial Peptides from Plants: What They Are and How They Probably Work
Patrícia Barbosa Pelegrini,Rafael Perseghini del Sarto,Osmar Nascimento Silva,Octávio Luiz Franco,Maria Fátima Grossi-de-Sa
Biochemistry Research International , 2011, DOI: 10.1155/2011/250349
Abstract: Plant antibacterial peptides have been isolated from a wide variety of species. They consist of several protein groups with different features, such as the overall charge of the molecule, the content of disulphide bonds, and structural stability under environmental stress. Although the three-dimensional structures of several classes of plant peptides are well determined, the mechanism of action of some of these molecules is still not well defined. However, further studies may provide new evidences for their function on bacterial cell wall. Therefore, this paper focuses on plant peptides that show activity against plant-pathogenic and human-pathogenic bacteria. Furthermore, we describe the folding of several peptides and similarities among their three-dimensional structures. Some hypotheses for their mechanisms of action and attack on the bacterial membrane surface are also proposed.
Regionaliza??o da agricultura do Estado do Paraná, Brasil
Fuentes Llanillo, Rafael;Del Grossi, Mauro Eduardo;Santos, Flávio Oliveira dos;Munhos, Paula Daniela;Guimar?es, Maria de Fátima;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000100018
Abstract: this work presents a characterization of the agriculture of paraná state based on thirty-five variables extracted from agricultural census of 1995/96 and two variables from the map of soil aptitude. these are related to land access, land use, utilization of chemical and mechanical technologies, use of capital assets, labor relationships and tercerization, soil fertility and mechanization suitability. the factor analysis with thirty-seven variables enabled to describe seven main factors, which explained 66.7% of variance. the cluster analysis of the seven factor?s values allowed to classify ten types of municipalities organized in nine regions.
Antibacterial Peptides from Plants: What They Are and How They Probably Work
Patrícia Barbosa Pelegrini,Rafael Perseghini del Sarto,Osmar Nascimento Silva,Octávio Luiz Franco,Maria Fátima Grossi-de-Sa
Biochemistry Research International , 2011, DOI: 10.1155/2011/250349
Abstract: Plant antibacterial peptides have been isolated from a wide variety of species. They consist of several protein groups with different features, such as the overall charge of the molecule, the content of disulphide bonds, and structural stability under environmental stress. Although the three-dimensional structures of several classes of plant peptides are well determined, the mechanism of action of some of these molecules is still not well defined. However, further studies may provide new evidences for their function on bacterial cell wall. Therefore, this paper focuses on plant peptides that show activity against plant-pathogenic and human-pathogenic bacteria. Furthermore, we describe the folding of several peptides and similarities among their three-dimensional structures. Some hypotheses for their mechanisms of action and attack on the bacterial membrane surface are also proposed. 1. Introduction The first antibacterial peptide isolated from a plant species was a purothionin from wheat flour (Triticum aestivum), which has the ability to inhibit the growth of some phytopathogens such as Pseudomonas solanacearum, Xanthomonas campestris and Corynebacterium michiganense [1]. Almost 40 years later, several additional peptides with antibacterial activity have been characterized, represented not only by thionins, now named defensins, but also by other groups of proteins such as cyclotides, glycine-rich proteins, snakins, 2S albumins, and hevein-type proteins [2–5]. Peptides have been isolated from roots, seeds, flowers, stems, and leaves and have demonstrated activities towards phytopathogens, as well as against bacteria pathogenic to humans [2, 3, 6]. Over the years, antibacterial peptides have become an interesting tool for the development of new techniques in the control of crop losses and in the production of novel antibiotics for the treatment of diverse human infections [7, 8]. However, there is still little information about how these peptides affect the pathogen to cause cell death or growth inhibition. The fact that only a few peptide structures have been studied makes it more difficult to clarify the mechanism of action used to cause damage in bacterial cells [9–12]. Furthermore, it is not clear whether plant antibacterial peptides from different protein families present similar sequences, structures, and modes of action, or whether each group behaves in a different manner. Accordingly, this paper intends to explain some of these features of antibacterial peptides from plant sources. Herein, biochemical and structural properties of several peptides
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