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Registros recuperados: 12
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Above-Optimum Temperature-Induced Differential Photosynthetic and Roots Morphometric Responses in Two Contrasting Rice Genotypes. Repositório Alice
MOURA, D. da S.; MORAES. I. L. de; ARMENSTO, R. da S.; SILVA, R. S. da; REOLON, F.; BORELA, J.; FAGUNDES, P. R. R.; BRITO, G. G. de; DEUNER, S..
Tipo: Artigo de periódico Palavras-chave: Oryza sativa L; Thermotolerance; Root system.; Heat; Photosynthesis..
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1087672
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Carrot seed germination and ethylene production at high temperature in response to seed osmopriming Horticultura Brasileira
Nascimento,Warley M; Huber,Donald J; Cantliffe,Daniel J.
Carrot (Daucus carota) seed germination can be erratic or reduced under temperatures above 35ºC. Priming circumvents seed thermoinhibition in several crops, including carrot. The involvement of ethylene in germination at supra-optimal temperatures has been reported in other species, but its role in carrot seed germination has not been examined. The objective of this study was to determine whether priming-mediated improvement in carrot seed germination at high temperature was associated with increased ethylene production. Seeds of two tropical carrot genotypes (Alvorada and Brasília) were incubated over a range of temperatures. 'Brasilia' seeds were primed for 72 hours in aerated PEG solution at 15ºC under light conditions and germination tested at 20 and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Daucus carota; Thermotolerance; Stand establishment; Osmoconditioning; Cultivars.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362013000400008
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Characterization of the virulence, growth temperature and antibiotic resistance of the Campylobacter jejuni IAL 2383 strain isolated from humans BJM
Fonseca,B.B.; Rossi,D.A.; Maia,C.A.; Nalevaiko,P.C.; Melo,R.T.; Cuccato,L.P.; Beletti,M.E..
The objective of this study was to characterize the C. jejuni IAL2383 strain isolated from humans in Brazil. Transcripts for the racR, dnaJ and ciaB genes were found and flaA, plda and cadF genes were present in the genome and bacteria was sensitive to most of the important antimicrobials used to treat humans. C. jejuni IAL2383 is a good experimental model to analyze the interactions with cells.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Virulence; Experimental model; Thermotolerance; Campylobacter jejuni.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100039
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Constitutive overexpression of small HSP24.4 gene in transgenic tomato conferring tolerance to high-temperature stress. Repositório Alice
MAHESH, U.; MAMIDALA, P.; RAPOLU, S.; ARAGAO, F. J. L.; SOUZA, M. T.; RAO, P. J. M.; KIRTI, P. B.; NANNA, R. S..
Tipo: Separatas Palavras-chave: Small heat shock proteins (sHSPs); Heat shock response (HS); Agrobacterium-mediated transformation; Thermotolerance; Solanum lycopersicum.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/974977
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Evaluation of thermotolerant capacity of lactic acid bacteria isolated from commercial sausages and the effects of their addition on the quality of cooked sausages Ciênc. Tecnol. Aliment.
Pérez-Chabela,María de Lourdes; Totosaus,Alfonso; Guerrero,Isabel.
The thermotolerant capacity of several lactic acid bacteria strains isolated from cooked commercial sausages was determined. Four strains were positively identified as Lactobacillus plantarum, Lactobacillus curvatus, Pediococcus pentosaceus and Pediococcus acidilacti, after surviving thermal treatment (70 °C during 60 minutes). Thermotolerant strains were inoculated in sausage batters before cooking in order to determine their effect on color, texture, acceptance and inhibition of Enterobacteria during 12 days at 8 °C. No significant effect of the inoculated strains was detected on color parameters. Textural profile parameters, cohesiveness and resilience, were not affected by the inoculation of thermotolerant lactic acid bacteria, but L. curvatus sausages...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactic acid bacteria; Thermotolerance; Sausages.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612008000100019
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Hsp70 Genotypes and Heat Tolerance of Commercial and Native Chickens Reared in Hot and Humid Conditions Rev. Bras. Ciênc. Avic.
Duangjinda,M; Tunim,S; Duangdaen,C; Boonkum,W.
ABSTRACT Heat tolerance in poultry production was obtained attention due to the need for genetic lines that can withstand climate changes. This study aimed at investigating heat tolerance in commercial and native broiler genetics, as well as the physiological and growth performance responses of HSP70 genotypes submitted to heat stress. In Experiment I, heterophil:lymphocyte (H:L) ratio, as an indicator of heat tolerance, was compared between commercial broilers (n = 100) and Thai native chickens (n = 100). Growing chickens (with similar initial weight) of each genetic strain were randomly divided into two groups: 1) thermoneutral environment (26 oC ± 2 oC) and 2) heat stress (36 oC ± 2 oC). The results showed that native chickens originating from a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heat shock protein; Indigenous chicken; HSP70; Thermotolerance.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100007
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Hydrothermal Vent Ecosystems ArchiMer
Fisher, Charles R.; Takai, Ken; Le Bris, Nadine.
Tipo: Text Palavras-chave: Upper temperature limit; Pompeii worms; Field; Variability; Thermotolerance; Environments; Communities; Life.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-6109.pdf
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Physiological and biochemical changes in lettuce seeds during storage at different temperatures Horticultura Brasileira
Catão,Hugo Cesar RM; Gomes,Luiz Antonio Augusto; Guimarães,Renato M; Fonseca,Pedro Henrique F; Caixeta,Franciele; Galvão,Alexandre G.
ABSTRACT Dormancy in lettuce seeds is a process not yet fully understood. High storage temperatures can cause seed dormancy promoting physiological and enzymatic changes. The goal of this study was to investigate the influence of storage period and environments on the quality and dormancy of different lettuce cultivars. We also investigated the biochemical changes. A completely randomized experimental design was used in a 4x8x3 factorial arrangement to evaluate physiological quality on different storage periods (30, 60, 90 and 120 days) and environments (15, 25 and 35°C) of seeds from eight lettuce cultivars (Everglades, Babá de Verão, Elisa, Luiza, Grand Rapids, Hortência, Salinas 88 and Rubete). The biochemical activity was accessed by tetrazolium test...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactuca sativa; Thermotolerance; Thermoinhibition; Dormancy; Enzymatic activity.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000100118
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Small heat shock proteins genes are differentially expressed in distinct varieties of common bean Braz. J. Plant Physiol.
Simões-Araújo,Jean Luiz; Rumjanek,Norma Gouvêa; Margis-Pinheiro,Márcia.
Plants respond to temperature stress by synthesizing a set of heat shock proteins (HSPs), which may be responsible for the acquisition of thermotolerance. In this study, the induction of small HSPs (sHSPs) in eight common bean varieties was evaluated by Northern blot analysis using the W HSP 16.9 cDNA as heterologous probe. Cowpea was used, as a positive control since this plant, as opposed to common bean, is known to grow well under high temperature regimes such as that found in the Brazilian semi-arid region. After the growth period, the plants were submitted to two h of heat shock at 40 ºC. All varieties tested were able to induce sHSP mRNAs that hybridized with W HSP 16.9 probe. However, significant kinetic differences were found when comparing...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Common bean; Heat shock proteins; HSPs; Thermotolerance; Temperature stress.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000100005
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Thermotolerance of Histoplasma capsulatum at 40 °C predominates among clinical isolates from different Latin American regions BJID
Sahaza,Jorge H.; Rodríguez-Arellanez,Gabriela; Canteros,Cristina E.; Reyes-Montes,María del Rocío; Taylor,Maria Lucia.
ABSTRACT The yeast phase of 22 Histoplasma capsulatum clinical isolates from Mexico, Argentina, Colombia, and Guatemala and three reference strains, one from Panama and two from the United States of America (USA), were screened for thermosensitivity characteristics using different analyses. Growth curves at 0, 3, 6, 12, 24, and 30 h of incubation at 37 and 40 °C, the growth inhibition percentage at 40 °C, and the doubling time at 37 and 40 °C were determined for all yeasts studied. Most of the isolates examined exhibited thermotolerant phenotypes at 40 °C, whereas a thermosensitive phenotype at 40 °C was only detected in the Downs reference strain from the USA. Growth inhibition values lower than 33.8% supported the predominance of the thermotolerant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Latin America; H. capsulatum; Yeasts; Thermotolerance; Thermosensitivity.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702020000100044
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Tolerance to abiotic factors of microsclerotia and mycelial pellets from Metarhizium robertsii, and molecular and ultrastructural changes during microsclerotial differentiation. Repositório Alice
PAIXÃO, F. R. S. da; HUARTE BONNET, C.; RIBEIRO-SILVA, C. de S.; MASCARIN, G. M.; FERNANDES, E. K. K.; PEDRINI, N..
Abstract: Metarhizium species fungi are able to produce resistant structures termed microsclerotia, formed by compact and melanized threads of hyphae. These propagules are tolerant to desiccation and produce infective conidia; thus, they are promising candidates to use in biological control programs. In this study, we investigated the tolerance to both ultraviolet B (UV-B) radiation and heat of microsclerotia of Metarhizium robertsii strain ARSEF 2575. We also adapted the liquid medium and culture conditions to obtain mycelial pellets from the same isolate in order to compare these characteristics between both types of propagules. We followed the peroxisome biogenesis and studied the oxidative stress during differentiation from conidia to microsclerotia by...
Tipo: Artigo de periódico Palavras-chave: UV-B radiation; Thermotolerance; Tolerância; Fungo Entomógeno; Fungo Para Controle Biológico; Radiação Solar; Raio Ultravioleta; Controle Biológico; Metarhizium robertsii; Entomopathogenic fungi; Ultraviolet radiation; Heat tolerance; Oxidative stress; Biological control; Gene expression.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1138387
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Volcanic materials as carriers for the formulation of mycoinsecticides using the fungus Beauveria bassiana Ciencia e Investigación Agraria
Sy,Victoria E; Schalamuk,Santiago; Scorsetti,Ana C; Botto,Irma L.
Improvements in the formulation of biological insecticides are crucial to increase their stability and competitiveness in the market. The aim of this work was to evaluate the use of volcanic materials with different hydric retention capacities to increase the thermotolerance of B. bassiana conidia. Two pyroclastic rocks and a zeolite clinoptilolite were selected for this study. In addition, a commercial silica gel was used due to its reported capacity to increase conidial thermotolerance. Dry conidia were mixed with the materials to obtain a 2% w/w granular formulation, while conidial powder alone served as the control. Mixtures were stored at room temperature for 30 days and then exposed to 50 °C for two hours, and the viability was measured before and...
Tipo: Journal article Palavras-chave: Biological insecticide; Entomopathogenic fungus; Thermotolerance; Volcanic ash.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000200010
Registros recuperados: 12
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