Accumulation Chamber
Mostrando 13-24 de 52 artigos, teses e dissertações.
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13. Efeito de Saccharomyces cerevisiae na síntese de fitoalexinas em sorgo, na germinação e formação de apressórios por fungos fitopatogênicos e na proteção de pepino a Colletotrichum lagenarium e sorgo a Colletotrichum sublineolum. / Effect of Saccharomyces cerevisiae in phytoalexin synthesis in sorghum, on germination and appressorium formation by plant pathogenic fungi and in the protection of cucumber against Colletotrichum lagenarium and sorghum against Colletotrichum sublineolum.
The yeast Saccharomyces cerevisiae has potential in the control of diseases in some plants by the ability to induce resistance and elicits defence mechanisms. However, in the process of purification of elicitor (s) present in the cell wall of S. cerevisiae a low efficiency was observed during the process, making difficult to carry out experiments, mainly in
Publicado em: 2005
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14. Central Roles for Potassium and Sucrose in Guard-Cell Osmoregulation.
Osmoregulation in guard cells of intact, attached Vicia faba leaves grown under growth chamber and greenhouse conditions was studied over a daily light cycle of stomatal movements. Under both growth conditions guard cells had two distinct osmoregulatory phases. In the first (morning) phase, opening was correlated with K+ uptake and, to a lesser extent, sucro
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15. Ocular Albumin Fluorophotometric Quantitation of Endotoxin-Induced Vascular Permeability
Bacterial endotoxin (lipopolysaccharide; LPS) is known to alter systemic vascular permeability, but this effect is difficult to monitor and quantitate in vivo. The ocular vessels of the rabbit are particularly sensitive to LPS. Using a slit lamp equipped with a fluorophotometer, we have adapted a method to quantitate endotoxin-induced ocular vascular permeab
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16. Relationship between Nitrate Uptake, Flux, and Reduction and the Accumulation of Reduced Nitrogen in Maize (Zea mays L.): I. GENOTYPIC VARIATION 1
The study presented here was an extension of a preceding field project concerned with changes in N metabolism of four maize hybrids during grain development. The objectives were to relate uptake, flux, and reduction of nitrate to accumulation of reduced N in growth-chamber-grown seedlings of the same four hybrids and to compare these results with those obtai
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17. Dynamics of the cellular and humoral components of the inflammatory response elicited in skin blisters in humans.
Skin blisters induced by suction on the forearm of normal volunteers provide a convenient model to study the inflammatory response in vivo in man. In our study, after removal of the roof of the blister, i.e., the epidermis, the exposed floor of the blister (dermal-epidermal interface) was bathed with 70% autologous serum using a multiwell skin chamber. Migra
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18. Relationship between Nitrate Uptake, Flux, and Reduction and the Accumulation of Reduced Nitrogen in Maize (Zea mays L.): II. EFFECT OF NUTRIENT NITRATE CONCENTRATION 1
Two maize hybrids were grown under growth chamber conditions on solution or vermiculite medium that contained 2.5, 7.5, or 15 millimolar nitrate. The objectives were to determine: (a) the effect of nitrate supply on N metabolism and growth and (b) the interrelationship between nitrate uptake, flux, and reduction on the accumulation of reduced N and nitrate b
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19. Ocular changes in rabbits with corticosteroid-induced ocular hypertension.
Rabbit eyes with steroid-induced ocular hypertension were investigated in order to evaluate the histochemical abnormalities in the chamber angle region. The right eye of 14 rabbits was treated by dexamethasone 1% 3 times daily for 3 to 5 weeks. The eyes were stained by haematoxylin-eosin, periodic acid Schiff, fibrin, colloidal iron, and alcian blue with and
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20. Synthesis and Movement of Abscisic Acid in Water-Stressed Cotton Leaves 1
Synthesis and movement of abscisic acid (ABA) into the apoplast of water-stressed cotton (Gossypium hirsutum L.) leaves were examined using pressure dehydration techniques. The exudates of leaves dehydrated in a pressure chamber contained ABA. The level of ABA in the exudates was insensitive to the leaf water potential when dehydration occurred over a 3-hour
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21. Biphasic pattern of histone gene expression during Drosophila oogenesis.
The expression of histone genes during Drosophila oogenesis was compared to periods of DNA synthesis as well as to the pattern of actin gene expression. Accumulation of histone mRNAs was measured by RNA blot hybridization. Relatively low levels of histone mRNAs are present in egg chambers prior to stage 10, during the period of nurse and follicle cell polypl
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22. In vivo stimulation of connective tissue accumulation by the tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+ in rat experimental wounds.
The tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+ (GHK-Cu) was first described as a growth factor for differentiated cells. Recent in vitro data showed that it possesses several properties of a potential activator of wound repair. We investigated the effects of GHK-Cu in vivo, using the wound chamber model described previously (Schilling, J.A., W
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23. Decreased adrenergic neuronal uptake activity in experimental right heart failure. A chamber-specific contributor to beta-adrenoceptor downregulation.
The reduction of myocardial beta-adrenoceptor density in congestive heart failure has been thought to be caused by agonist-induced homologous desensitization. However, recent evidence suggests that excessive adrenergic stimulation may not produce myocardial beta-receptor downregulation unless there is an additional defect in the local norepinephrine (NE) upt
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24. An Internal Reaction Chamber in Dimethylglycine Oxidase Provides Efficient Protection from Exposure to Toxic Formaldehyde*
We report a synthetic biology approach to demonstrate substrate channeling in an unusual bifunctional flavoprotein dimethylglycine oxidase. The catabolism of dimethylglycine through methyl group oxidation can potentially liberate toxic formaldehyde, a problem common to many amine oxidases and dehydrogenases. Using a novel synthetic in vivo reporter system fo
American Society for Biochemistry and Molecular Biology.