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| Registros recuperados: 18 | |
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| Rouached, H.; Wirtz, M.; Alary, R.; Hell, R.; Arpat, A.B.; Davidian, J.C.; Fourcroy, P.; Berthomieu, P.. |
| The molecular mechanisms regulating the initial uptake of inorganic sulfate in plants are still largely unknown. The current model for the regulation of sulfate uptake and assimilation attributes positive and negative regulatory roles to O-acetyl-serine (O-acetyl-Ser) and glutathione, respectively. This model seems to suffer from exceptions and it has not yet been clearly validated whether intracellular O-acetyl-Ser and glutathione levels have impacts on regulation. The transcript level of the two high-affinity sulfate transporters SULTR1.1 and SULTR1.2 responsible for sulfate uptake from the soil solution was compared to the intracellular contents of O-acetyl-Ser, glutathione, and sulfate in roots of plants submitted to a wide diversity of experimental... |
| Tipo: Journal Article |
Palavras-chave: SULTR1.1; SULTR1.2; SULFATE; TRANSPORTER; ROOT; SPLIT ROOT. |
| Ano: 2008 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009caed0e53&uri=/notices/prodinra1/2009/03/ |
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| Rousset, C.; Jacq, Vincent; Magnan, N.. |
| Les collines des Camoins abritent une nappe d'eau sulfatée et sulfureuse froide alimentant la station thermale de Camoins-les-Bains. La minéralisation de l'eau est assurée par la traversée d'un massif de laminites à gypse, carbonates, matière organique et soufre natif, d'âge stampien. L'examen des roches et minéraux, en surface et dans la mine de soufre, permet de constater la liaison des dépôts originels avec une activité bactérienne. En comparant les biotopes à l'origine des dépôts, tels que l'on peut les reconstituer, à des dépôts actuels, a été proposé un modèle de lagune continentale peu profonde, sujette à l'assèchement en climat chaud et aride, d'eaux sulfatées stratifiées, sièges d'activités intenses de bactéries photosynthétiques du cycle du... |
| Tipo: Text |
Palavras-chave: HYDROGEOLOGIE; NAPPE PHREATIQUE; OLIGOCENE; QUALITE DE L'EAU; SULFATE; SOUFRE; CYCLE BIOGEOCHIMIQUE; MINERALISATION; PALEOGEOGRAPHIE; PALEOENVIRONNEMENT. |
| Ano: 1996 |
URL: http://www.documentation.ird.fr/hor/fdi:010008257 |
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| Zuber, H.; Davidian, J.C.; Wirtz, M.; Hell, R.; Belghazi, M.; Thompson, R.; Gallardo, K.. |
| Background:Sulphur is an essential macronutrient needed for the synthesis of many cellular components. Sulphurcontaining amino acids and stress response-related compounds, such as glutathione, are derived from reduction ofroot-absorbed sulphate. Sulphate distribution in cell compartments necessitates specific transport systems. The lowaffinitysulphate transporters SULTR4;1 and SULTR4;2 have been localized to the vacuolar membrane, where they mayfacilitate sulphate efflux from the vacuole.Results: In the present study, we demonstrated that the Sultr4;1 gene is expressed in developing Arabidopsis seeds toa level over 10-fold higher than the Sultr4;2 gene. A characterization of dry mature seeds from a Sultr4;1 T-DNA mutantrevealed a higher sulphate content,... |
| Tipo: Journal Article |
Palavras-chave: SULFUR; SULFATE; VACUOLAR MEMBRANE; SULTR4; TRANSCRIPT LEVELS. |
| Ano: 2010 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201188a045bf&uri=/notices/prodinra1/2011/05/ |
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| Registros recuperados: 18 | |
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