Brassinosteroids
Mostrando 1-12 de 72 artigos, teses e dissertações.
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1. Phytopathogen resistance of phytohormone-deficient and low-sensitivity mutant tomatoes
ABSTRACT This study broadens the knowledge of plant-pathogen interactions using phytohormone-deficient and low-sensitivity mutant tomatoes. The experiment was performed under greenhouse conditions and the mutants used were provided by the HCPD laboratory, at ESALQ/USP. The hormone mutant Never ripe showed a larger final lesion size when inoculated with Botry
Rev. Ceres. Publicado em: 2021-06
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2. Brassinosteroids Reciprocates Heavy Metals Induced Oxidative Stress in Radish by Regulating the Expression of Key Antioxidant Enzyme Genes
ABSTRACT Heavy metal toxicity in plants lead to accumulation of reactive oxygen species (ROS). Antioxidant enzyme system is also not able to revert altered ROS homeostasis. The present study reports the heavy metal induced ROS toxicity by up-regulating the expression of key antioxidant enzyme genes through Brassinosteroids pre-soaking treatment in radish.
Braz. arch. biol. technol.. Publicado em: 14/11/2018
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3. Involvement of brassinosteroids and ethylene in the control of mitochondrial electron transport chain in postharvest papaya fruit
The plant hormones brassinosteroids (BR) and ethylene (ET) act together to regulate plant metabolism. We used BR and 1-methylcyclopropene (1-MCP, an ET action inhibitor) to elucidate the interactions between both hormones for the regulation of mitochondrial respiratory pathways in papaya fruit. The exogenous application of the 24-epibrassinolide (epiBR) enha
Theor. Exp. Plant Physiol.. Publicado em: 08/11/2013
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4. Brassinosteroid analogue affects the senescence in two papaya genotypes submitted to drought stress
Brassinosteroids (BS) application is associated with the increase of tolerance to some kinds of stresses, such as those induced by the infection of pathogens, temperature, salt and water deficiency. In this work, the influence of a spirostanic analogue of brassinosteroid (SAB) in the leaves of papaya Golden and UENF/CALIMAN 01 (UC 01) was tested to evaluate
Theor. Exp. Plant Physiol.. Publicado em: 2013
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5. Efeito de brassinosteróide no crescimento, metabolismo e fixação de nitrogênio em plantas de Cajanus cajan noduladas e sob estresse salino / Effect of brassinosteroid on growth, metabolism and nitrogen fixation in Cajanus cajan nodulated plants, under salt stress
O metabolismo geral de uma planta pode ser afetado pelo excesso de sais no solo, visto que a salinidade pode causar reduções no crescimento e acelerar a senescência. Os brassinosteróides são hormônios vegetais envolvidos no aumento da tolerância a vários tipos de estresses, inclusive o estresse salino. Com o objetivo de avaliar a influência da aplic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2012
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6. Clonagem, caracterização e expressão de genes envolvidos na síntese de compostos isoprenóides em Eucalyptus grandis
Isoprenoids are essential to all organisms and are the most structurally and functionally diverse group of plant metabolites. In plants, more than 30,000 compounds of this class were identified to date. All plants produce isoprenoids that can play essential roles as carotenoids, chlorophylls and plastoquinone (photosynthesis); ubiquinone (respiration); regul
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
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7. Controle hormonal da defesa à herbivoria em tomateiro / Hormonal control of herbivory defense in tomato
Even though the cultivation of tomato has a high economical importance, this culture is classified as being of elevated risk because of it common infestation by pests and diseases. This problem makes this culture greatly dependent of the application of several agrochemicals, which leads to increase in cost of production, environmental damages and also facili
Publicado em: 2009
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8. Physiological performance of rice (Oryza sativa L.) seeds treated with 24-epibrassinolide / Desempenho fisiológico de sementes de arroz (Oryza sativa L.) tratadas com 24-epibrassinolídeo
The objective of the research was evaluate the importance 24-epibrassinolide in physiological performance of rice seeds, for this two experiments were conducted in laboratory and a greenhouse. The first assessed the performance of different concentrations of 24-epibrassinolide in physiological quality of seeds and seedlings growth in two lots of rice cv. IRG
Publicado em: 2008
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9. Effect of brassinosteroid on growth, biochemical composition and transport of amino acids in plants-of Cajanus cajan (L.) Millsp, cultivated under salt stress / Efeito de brassinosteroide no cerescimento, parametros bioquimicos e transporte de aminoacidos em plantas de Cajanus cajan (L.) Millsp, submetidas a estresse salino
Plantas de Cajanus cajan receberam aplicações de brassinosteróide ou de clotrimazol (inibidor de síntese de brassinosteróides) e foram submetidas à salinidade. O objetivo deste trabalho foi verificar o efeito de duas concentrações de brassinosteróide (1 x 10-7 e 0,5 x 10-9 M) e uma de clotrimazol (1 x 10-4 M), no crescimento, composição bioquímic
Publicado em: 2007
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10. Efeito de reguladores de crescimento vegetal nas respostas de cultivares de feijoeiro ao Southern bean mosaic virus (Sobemovirus)
A aplicação de determinados reguladores de crescimento em plantas pode resultar na indução de resistência contra ataques subseqüentes de patógenos. Este fenômeno é conhecido como resistência sistêmica adquirida (SAR) e vários mecanismos estão envolvidos, entre eles a resposta de hipersensibilidade (HR), o aumento na atividade das enzimas peroxid
Publicado em: 2006
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11. Brassinosteroids and Plant Steroid Hormone Signaling
American Society of Plant Biologists.
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12. A brassinosteroid-insensitive mutant in Arabidopsis thaliana exhibits multiple defects in growth and development.
Brassinosteroids are widely distributed plant compounds that modulate cell elongation and division, but little is known about the mechanism of action of these plant growth regulators. To investigate brassinosteroids as signals influencing plant growth and development, we identified a brassinosteroid-insensitive mutant in Arabidopsis thaliana (L.) Henyh. ecot