In Vitro Mutagenesis
Mostrando 1-12 de 1444 artigos, teses e dissertações.
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1. Induction of mutagenesis on Chrysanthemums
Resumo A diversidade genética das culturas tem papel significativo na melhoria de novas plantas por meio do melhoramento. O crisântemo contém a maioria das variedades mutantes, tornando a reprodução por mutação um dos procedimentos de reprodução mais amplamente utilizados para plantas ornamentais. O objetivo da pesquisa é usar a irradiação gama p
Ornamental Horticulture. Publicado em: 2022
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2. Ammonium excretion, auxin production and effects of maize inoculation with ethylenediamine-resistant mutants of Pseudomonas sp.
ABSTRACT Plant growth-promoting bacteria (PGPB) comprise part of plant microbiome of biotechnological interest due to their potential to decrease the use of agrochemicals in agriculture. Among the commonly found PGPB species, the Pseudomonas genus is known for high competitiveness and efficiency in expressing growth-promotion traits. To increase the contribu
Bragantia. Publicado em: 02/08/2018
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3. Field and laboratory assessments of sugarcane mutants selected in vitro for resistance to imazapyr herbicide
Abstract Seven imazapyr-tolerant mutant sugarcane plants, previously generated by in vitro mutagenesis, were studied. The imazapyr concentrations required to inhibit their acetolactate synthase (ALS basal activity) (IC50 as μmoles acetoin h-1 mg-1 protein) were 0.77 - 5.36 times greater than that of the N12 ‘parent’. The basal ALS activities of Mut1 and
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-06
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4. Compounds used to produce cloned animals are genotoxic and mutagenic in mammalian assays in vitro and in vivo
The compounds 6-dimethylaminopurine and cycloheximide promote the successful production of cloned mammals and have been used in the development of embryos produced by somatic cell nuclear transfer. This study investigated the effects of 6-dimethylaminopurine and cycloheximide in vitro, using the thiazolyl blue tetrazolium bromide colorimetric assay to assess
Braz J Med Biol Res. Publicado em: 28/03/2014
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5. Physiological Responses of Callus from Gerbera jamesonii Bolus ex. Hook f. to Gamma Irradiation
In the present study, in vitro mutagenesis techniques were applied to investigate the effects of gamma irradiation at 0, 10, 20, 30, 40, 50 and 60 Gy on physiological changes in callus of Gerbera jamesonii Bolus ex. Hook f. Biochemical changes in chlorophyll and soluble protein content of pre- and post- irradiated Gerbera callus were studied. Non-irradiated
Brazilian Archives of Biology and Technology. Publicado em: 2012-06
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6. Melhoramento de crisantemo (Dendrathema grandifolia tzvelev.) cv. Repin rosa, atraves da inducao de mutacao in vitro.
Objetivou-se adaptar e utilizar o metodo de inducao de mutacao in vitro no melhoramento de crisantemo, mediante a irradiacao de pedicelos de botoes florais imaturos da cultivar Repin rosa, com raios-gama. Apos a determinacao do melhor meio de cultura para a regeneracao e enraizamento dos pedicelos, e a determinacao da sensitividade, realizou-se a irradiacao
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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7. PhoR/PhoP two component regulatory system affects biocontrol capability of Bacillus subtilis NCD-2
The Bacillus subtilis strain NCD-2 is an important biocontrol agent against cotton verticillium wilt and cotton sore shin in the field, which are caused by Verticillium dahliae Kleb and Rhizoctonia solani Kuhn, respectively. A mutant of strain NCD-2, designated M216, with decreased antagonism to V. dahliae and R. solani, was selected by mini-Tn10 mutagenesis
Genetics and Molecular Biology. Publicado em: 23/04/2010
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8. Pharmacology and toxicology of diphenyl diselenide in several biological models
The pharmacology of synthetic organoselenium compounds indicates that they can be used as antioxidants, enzyme inhibitors, neuroprotectors, anti-tumor and anti-infectious agents, and immunomodulators. In this review, we focus on the effects of diphenyl diselenide (DPDS) in various biological model organisms. DPDS possesses antioxidant activity, confirmed in
Publicado em: 2010
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9. Influence of the polymorphisms of the α-major regulatory element HS-40 on in vitro gene expression
The α-MRE is the major regulatory element responsible for the expression of human α-like globin genes. It is genetically polymorphic, and six different haplotypes, named A to F, have been identified in some population groups from Europe, Africa and Asia and in native Indians from two Brazilian Indian tribes. Most of the mutations that constitute the α-MRE
Brazilian Journal of Medical and Biological Research. Publicado em: 31/07/2009
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10. InduÃÃo de mutaÃÃo em feijÃo-caupi [Vigna unguiculata (L.) Walp., cultivar BR-14 mulato, visando à obtenÃÃo de mutantes tolerantes à salinidade
Among cultivated bean varieties cowpea [Vigna unguiculata (L.) Walp.] stands out for its high protein content and its ability to grow under adverse conditions. As such, this species has become one of the most important subsistence crops for rural populations in Brazilian north-eastern region. However, aside from increasing environmental problems, soil salini
Publicado em: 2009
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11. MAPEAMENTO E DELEÇÃO DE EPÍTOPOS LINEARES DE LINFÓCITOS B EM PROTEÍNAS DO VÍRUS DA SÍNDROME RESPIRATÓRIA E REPRODUTIVA DOS SUÍNOS PARA A PRODUÇÃO DE UMA VACINA DIFERENCIAL / MAPPING AND DELETION OF B-CELL LINEAR EPITOPES IN PROTEINS OF PORCINE REPRODUCTIVE AND RESPIRATORY SYNDROME VIRUS FOR THE PRODUCTION OF A DIFFERENTIAL VACCINE
Porcine reproductive and respiratory syndrome virus (PRRSV) was isolated for the first time in 1991 and since then it has been associated with significant economic losses to the pig industry worldwide. Although vaccination against PRRSV is widely used, an important advance would be the development of marker vaccines allowing serologic discrimination between
Publicado em: 2008
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12. Ação mutagênica in vivo e antimicrobiana do extrato hidroalcoólico de Pyrostegia venusta e seus efeitos no crescimento e diferenciação celular em um sistema eucariótico in vitro. / Mutagenic action in vivo and antimicrobial of the Pyrostegia venusta hydroalcoholic extract and its effects on the growth and cell differentiation in an in vitro eukaryotic system.
Este estudo teve por objetivos analisar os efeitos do extrato hidroalcoólico de Pyrostegia venusta, conhecida popularmente como cipó-de-são-joão, sobre diversos tipos de bactérias Gram-negativas e Gram-positivas e também sobre leveduras, além de analisar seu efeito no crescimento e diferenciação celular em Herpetomonas samuelpessoai in vitro e mutag
Publicado em: 2008