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| Registros recuperados: 10 | |
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| Kumar,Vinod; Parvatam,Giridhar; Ravishankar,Gokare Aswathanarayana. |
| The aim of this review is to critically analyze the role of silver nitrate (AgNO3) in modulating plant growth and development. In recent years, basic studies on ethylene regulation opened new vistas for applied research in the area of micro-propagation, somatic embryogenesis, in vitro flowering, growth promotion, fruit ripening, and sex expression. Silver nitrate has proved to be a very potent inhibitor of ethylene action and is widely used in plant tissue culture. Few properties of silver nitrate such as easy availability, solubility in water, specificity and stability make it very useful for various applications in exploiting plant growth regulation and morphogenesis in vivo and in vitro. Silver ion mediated responses seem to be involved in polyamines,... |
| Tipo: Journal article |
Palavras-chave: Calcium; Ethylene; Morphogenesis; Polyamines; Silver nitrate; Somatic embryogenesis. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000200008 |
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| Fernandes, Jovanir Inês Müller; Universidade Federal do Paraná; Murakami, Alice Eiko; UEM. |
| Due to the lack of a complete urea cycle, uricotelic species, such as broilers, are not able to synthesize de novo arginine (Arg), thus depending exclusively on dietary Arg. High levels of dietary lysine (Lys) increase the demand for Arg because of the antagonistic relationship between these amino acids. The Arg-Lys antagonism promotes an expressive increase in the renal Arg activity and consequently induces the degradation of Arg and the decrease in the activity of glycine amidinotransferase, an enzyme that uses Arg in the synthesis of muscle creatin. Arg is considered an important modulator of immunological and physiological processes. The degradation of Arg produces ornithine, a precursor of polyamines that are key to cell division, DNA synthesis, and... |
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Palavras-chave: Carbamoyl phosphatase synthetase; Creatine; Immune system; Nitric oxide; Polyamines; Urea cycle carbamoyl phosphatase synthetase; Creatine; Immune system; Nitric oxide; Polyamines; Urea cycle. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10990 |
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| Choudhary,Sikander P.; Bhardwaj,Renu; Gupta,Bishan D.; Dutt,Prabhu; Kanwar,Mukesh; Arora,Priya. |
| The effects of various conc of (10-11, 10-9 and 10-7 M) 24-epibrassinolide (24-epiBL) on polyamines and auxins contents was analyzed in 7days old seedlings of Raphanus sativus L. cv. Pusa chetki under copper metal stress. Cu metal (0.2mM) treatment significantly increased endogenous levels of putrescine, spermidine and spermine when compared with control values. Cadaverine content got decreased under metal stress. Endogenous polyamines showed varying levels in seedlings when applying 24-epiBL treatment only. Maximum increase was found in putrescine, cadaverine and spermidine in 10-11, 10-9 and 10-7 M conc of 24-epiBL respectively when applied alone to R. sativus seedlings. However, metal treatment supplemented with 24-epiBL revealed small increase in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Raphanus sativus; Polyamines; Auxins; Brassinosteriods; Oxidative stress; Heavy metal stress. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000100004 |
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| Aziz Khan,Hammad; Ziaf,Khurram; Amjad,Muhammad; Iqbal,Qumer. |
| Polyamines are low molecular weight organic compounds involved in diverse range of biological processes in all living organisms. Seed priming is a technique that improves seed performance by rapid and uniform germination with normal and vigorous seedlings. A laboratory study was performed to explore the benefits of seed priming with polyamines on seed germination and seedling growth of hot pepper (Capsicum annuum L.) Hot pepper seeds were primed in aerated solution of putrescine, spermine, or spermidine (25, 50, 75, and 100 mM) for 48 h at 25 ± 2 °C. Significant results (P < 0.05) were observed for different attributes of seed germination and early seedling growth. Polyamines priming resulted in earlier and synchronized germination via improving final... |
| Tipo: Journal article |
Palavras-chave: Seed priming; Capsicum annuum; Polyamines. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300018 |
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| Moreira,A.P.B.; Sabarense,C.M.; Dias,C.M.G.C.; Lunz,W.; Natali,A.J.; Glória,M.B.A.; Peluzio,M.C.G.. |
| We determined the effect of fish oil (FO) ingestion on colonic carcinogenesis in rats. Male Wistar rats received 4 subcutaneous injections (40 mg/kg body weight each) of 1,2-dimethylhydrazine (DMH) at 3-day intervals and were fed a diet containing 18% by weight FO (N = 10) or soybean oil (SO, N = 10) for 36 weeks. At sacrifice, the colon was removed, aberrant crypt foci were counted and the fatty acid profile was determined. Intestinal tumors were removed and classified as adenoma or carcinoma. Liver and feces were collected and analyzed for fatty acid profile. FO reduced the mean (± SEM) number of aberrant crypt foci compared to SO (113.55 ± 6.97 vs 214.60 ± 18.61; P < 0.05) and the incidence of adenoma (FO: 20% vs SO: 100%), but carcinoma occurred... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colonic aberrant crypt foci; Colorectal cancer prevention; Colorectal tumor; Omega-3 fatty acids; Polyamines. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001200008 |
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| Tovar Ramirez, Dariel; Zambonino-infante, Jose-luis; Cahu, Chantal; Gatesoupe, Joel; Vazquez Juarez, R. |
| Recent results have demonstrated that live yeast in diets improved gut maturation in sea bass larvae. In this study, we tested the absence and two levels of live yeast in sea bass larvae diets. Specimens were fed from time of mouth opening to 37 days after hatching a diet of 0%, 1.1%, or 5.7% wet weight of live yeast (Debaryomyces hansenii CBS 8339). Yeast incorporation improved survival 10%, and reduced malformed larvae. In groups fed 1.1% yeast, only 1% of larvae were malformed, compared to 14% in the control group. Final mean weight in groups fed 1.1% yeast was twice that of other groups. Activities and concentrations of mRNA trypsin and lipase were higher in the two groups fed yeast than in the control group, whereas activity and concentration of mRNA... |
| Tipo: Text |
Palavras-chave: Polyamines; Lipase; Trypsin; Amylase; Enzymes; Gut maturation; Fish larvae. |
| Ano: 2004 |
URL: https://archimer.ifremer.fr/doc/2004/publication-831.pdf |
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| Tovar, Dariel. |
| The interest in probiotics for aquaculture is increasing rapidly. In the present work we evaluated the potential of some yeast to induce the larvae gut maturation in sea bass larvae Dicentrarchus labrax. The production of polyamines putrescine, spermidine and spermine was quantified in ten yeast strains using high performance liquid chromatography (HPLC). Afterwards, fluorescently labelled yeast adhesion to the intestine of sea bass larvae and the spotted sand bass (Paralabrax maculatofasciatus) was evaluated by fluorescent microscopy. Two of them, CBS 8339 strain (Debaryomyces hansenii) and X2180 strain (Saccharomyces cerevisiae) produce the polyamines of our interest. The same strains showed the best adhering capabilities to the sea bass and spotted sand... |
| Tipo: Text |
Palavras-chave: Ontogeny; Digestive enzymes; Fish larvae; Polyamines; Probiotics; Ontogénèse; Enzymes digestives; Larves de poisson; Polyamines; Probiotiques. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/these-103.pdf |
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| Oliveira,Rayssa Camargo de; Asmar,Simone Abreu; Silva,Herick Fernando de Jesus; Morais,Tâmara Prado de; Luz,José Magno Queiroz. |
| ABSTRACT: Lavender is an aromatic ornamental plant that is used widely in the perfume, pharmaceutical, cosmetical and food industries. That is why it is important to study ways to promote a production of lavender raw material. For this, four experiments were carried out in order to study the germination and initial in vitro development of lavender. In the first part the efficiency of the use of hydrogen peroxide in the pre-treatment of seeds inoculated in culture media with different concentrations of gibberellic acid was evaluated. Besides that, the influence of the use of Growlux lamps and white fluorescent lamps on plantlets cultivated in MS and LS media at salts concentrations of 50 and 100% was evaluated. Finally, the effect of the gibberellic acid,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lavandula angustifolia; Tissue culture; GA3; Polyamines; Lamp. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001100405 |
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| Registros recuperados: 10 | |
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