Temperature Sensitive Lethal
Mostrando 1-12 de 367 artigos, teses e dissertações.
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1. Chlorophyll a fluorescence and leaf temperature are early indicators of oil palm diseases
ABSTRACT Bud rot (BR) caused by Phytophthora palmivora and lethal wilt (LW) whose causal agent is unknown, are two diseases currently posing a threat to the oil palm ( Elaeis guineensis . Jacq) industry. BR, first reported in 1964, has destroyed more than 85,000 ha. LW, first reported in 1994 in the Llanos Orientales in Colombia, has destroyed more than 5,00
Sci. agric. (Piracicaba, Braz.). Publicado em: 02/09/2019
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2. Cytolytic and systemic toxic effects induced by the aqueous extract of the fire coral Millepora alcicornis collected in the Mexican Caribbean and detection of two types of cytolisins
AbstractBackground Millepora alcicornis is a branching hydrocoral common throughout the Caribbean Sea. Like other members of this genus, this species is capable of inducing skin eruptions and blisters with severe pain after contact. In the present study, we investigated the toxicity of theM. alcicornis aqueous extract on several animal models. Considering th
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 20/10/2015
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3. Determinação da dose de radiação gama esterilizante pela avaliação dos parâmetros biológicos de machos de Ceratitis capitata (Diptera: Tephritidae), linhagem tsl - Vienna 8 / Determination of the dose of gamma radiation sterilization for assessment of biological parameters of male Ceratitis capitata (Diptera: Tephritidae), tsl - Vienna 8 strain
A linhagem tsl (temperature sensitive lethal) - Vienna 8 da espécie Ceratitis capitata, por apresentar mutações que facilitam a criação e a liberação de apenas machos estéreis no campo, vem sendo utilizada em programas de controle da mosca-do-mediterrâneo com o uso da técnica do inseto estéril. O objetivo deste trabalho foi determinar a dose de ra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/08/2011
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4. Effect of lysozyme or nisin on survival of some bacteria treated with high pressure at subzero temperature
The aim of this work was to examine the inactivation of some Gram-positive and Gram-negative bacteria exposed to the pressure of 193 MPa at -20 °C in the presence of lysozyme or nisin at concentration of 400 mg/ml. The highest effect of pressure at subzero temperature and lysozyme was found with pressure sensitive Pseudomonas fluorescens; viable cells of th
Brazilian Journal of Microbiology. Publicado em: 2009-12
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5. Efeitos das variações do binômio tempo/temperatura sobre embriões da linhagem mutante tsl Viena 8 de Ceratitis capitata (Wiedmann, 1824) (Díptera: Tephritidae) / Effects of the variations of the binomial time/temperature on embryos of the tsl Vienna 8 strain of Ceratitis capitata (Wiedmann, 1824) (Diptera: Tephritidae)
As moscas-das-frutas são consideradas importantes pragas da fruticultura mundial, causando perdas significativas à produção e ao livre trânsito de frutas. Com a preferência por alimentos com baixos níveis de agrotóxicos, pesquisas estão buscando alternativas ecológica, social e econômica viáveis para o controle destas pragas. A Técnica do Inseto
Publicado em: 2007
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6. Estudo da esterilização por plasma de acoplamento indutivo e análise comparativa com esterilização por óxido de etileno / Study of sterilization by Inductively coupled plasma and comparison with sterilization by ethilene oxyde
The gas Plasma sterilization technology has been emerging as an alternative to conventional low temperature processes since the advent of new therapies using heat sensitive materials in the healthcare field is greater than ever. The gas Plasma mechanism of action includes the generation of actives species by an electrical discharge, which is able to promote
Publicado em: 2006
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7. Aspectos biológicos e morfológicos de Diachasmimorpha longicaudata (Ashmead, 1905) (Hymenoptera: Braconidae) criado em larvas irradiadas de Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae) / Biological and morphological aspects of Diachasmimorpha longicaudata (Ashmead, 1905) (Hymenoptera: Braconidae) on irradiated larva of Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae)
O trabalho teve por objetivo avaliar alguns aspectos biológicos e morfológicos de D. longicaudata criados em larvas irradiadas e não irradiadas de C. capitata das linhagens bisexual e tsl (temperature sensitive lethal) e foi desenvolvido no Laboratório de Irradiação de Alimentos e Radioentomologia (LIARE) do CENA/USP. Para o tratamento das larvas com r
Publicado em: 2006
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8. Genetic Analysis of Temperature-Sensitive Lethal Mutants of Salmonella Typhimurium
We have isolated 440 mutants of Salmonella typhimurium that show temperature-sensitive growth on complex medium at 44°. Approximately 16% of the mutations in these strains have been mapped to 17 chromosomal locations; two of these chromosomal locations seem to include several essential genes. Genetic analysis of the mutations suggests that the collection sa
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9. Temperature-sensitive RNA polymerase mutants with altered subunit synthesis and degradation.
A temperature-sensitive mutant having a lethal mutation in the gene for the beta subunit of RNA polymerase (nucleosidetriphosphate:RNA nucleotidyltransferase, EC 2.7.7.6) exhibits an apparent 2- to 3-fold decrease in the rates of both beta and beta' subunit synthesis at the non-permissive temperature, relative to total protein. In contrast, a temperature-se
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10. Mutant of herpes simplex virus type 2 with temperature-sensitive lesions affecting virion thermostability and DNase activity: identification of the lethal mutation and physical mapping of the nuc-lesion.
We had previously shown that a temperature-sensitive (ts) mutant of herpes simplex virus type 2 strain HG52, ts13, induced a heat-labile DNase activity in infected cells (B. Francke, H. Moss, M. C. Timbury, and J. Hay, J. Virol. 26:209-213, 1978). Earlier work indicated that the mutant also possessed temperature-sensitive infectivity (I. W. Halliburton and M
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11. A hamster-attenuated, temperature-sensitive mutant of Venezuelan encephalitis virus.
Pathogenicities of 10 temperature-sensitive mutants of Venezuelan encephalitis virus were studied using the hamster model of human virulence. The parental strain and nine of the temperature-sensitive mutants produced lethal infections in hamsters. Strain ts 126 showed reduced hamster virulence. Deaths with the lethal mutants usually occurred 1 to 3 days late
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12. Relationship between cell death and altered lipid A synthesis in a temperature-sensitive lethal mutant of Salmonella typhimurium that is conditionally defective in 3-deoxy-D-manno-octulosonate-8-phosphate synthesis.
The relationship between the inability to synthesize a complete 3-deoxy-D-manno-octulosonate region of lipopolysaccharide and cell death was investigated in a temperature-sensitive lethal mutant of Salmonella typhimurium. The defect in lipopolysaccharide synthesis is due to a mutation in the structural gene for 3-deoxy-D-manno-octulosonate-8-phosphate synthe