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Registros recuperados: 9
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Analyse de la diversité de la tolérance et de l'accumulation de cadmium chez la laitue Inra
Zorrig, W.; Maisonneuve, B.; Davidian, J.C.; Abdelly; Berthomieu, P..
Tipo: Conference Paper Palavras-chave: CADMIUM.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201023967281&uri=/notices/prodinra1/2010/06/
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Characterization of a selenate-resistant Arabidopsis mutant. Root growth as a potential target for selenate toxicity Inra
El Kassis, E.; Cathala, N.; Rouached, H.; Fourcroy, P.; Berthomieu, P.; Terry, N.; Davidian, J.C..
Screening an Arabidopsis ( Arabidopsis thaliana) T-DNA mutant library forselenate resistance enabled us to isolate a selenate-resistant mutant line (sel1-11).Molecular and genetic characterization showed that the mutant contained a lesion in theSULTR1;2 gene that encodes a high affinity root sulfate transporter. We showed thatSULTR1; 2 is the only gene among 13 mutated genes of the Arabidopsis sulfatetransporter family whose mutation conferred selenate resistance to Arabidopsis. Theselenate resistance phenotype of the sel1-11 mutant was mirrored by an 8-fold increaseof root growth in the presence of selenate as shown by the calculated lethalconcentration values. The impairment of SULTR1; 2 activity in sel1-11 resulted in areduced 35 S-sulfate uptake...
Tipo: Journal Article Palavras-chave: SELENATE TOXICITY; SULFATE TRANSPORTER; SULFUR NUTRITION; SELENATE RESISTANCE.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2007b053951d&uri=/notices/prodinra1/2007/09/
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Cloning of a cDNA encoded by a member of the Arabidopsis thaliana ATP sulfurylase multigene family. Expression studies in yeast and in relation to plant sulfur nutrition Inra
Logan, H.M.; Cathala, N.; Grignon, C.; Davidian, J.C..
Tipo: Journal Article Palavras-chave: ARABIDOPSIS THALIANA; ATP; SULFURYLASE; CLONAGE MOLECULAIRE; ADNC; SEQUENCE NUCLEOTIDIQUE; SACCHAROMYCES CEREVISIAE; SEQUENCE HOMOLOGUE; ACTIVITE ENZYMATIQUE; TRANSCRIPTION; SULFATE; BRASSICA NAPUS.
Ano: 1996 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB0200029830090142&uri=/notices/prodinra1/2010/09/
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Differential regulation of the expression of two high affinity sulfate transporters, SULTR1.1 and SULTR1.2, in Arabidopsis Inra
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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Genetic and physiological determinants controlling cadmium accumulation in lettuce (Lactuca sativa) Inra
Zorrig, W.; Sarrobert, C.; Rouached, A.; Maisonneuve, B.; Davidian, J.C.; Abdelly, C.; Berthomieu, P..
Tipo: Conference Paper Palavras-chave: CADMIUM SOIL POLLUTANT; TOXICITY; VEGETABLE; LETTUCE; CADMIUM ACCUMULATION; ROOT SYSTEM.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201087635bf6&uri=/notices/prodinra1/2010/06/
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Regulation of sulfate uptake and assimilation - the same or not the same? Inra
Davidian, J.C.; Kopriva, S..
Plant take up the essential nutrient sulfur as sulfate from the soil, reduce it, and assimilate into bioorganic compounds, with cysteine being the first product. Both sulfate uptake and assimilation are highly regulated by the demand for the reduced sulfur, by availability of nutrients, and by environmental conditions. In the last decade, great progress has been achieved in dissecting the regulation of sulfur metabolism. Sulfate uptake and reduction of activated sulfate, adenosine 5’-phosphosulfate (APS), to sulfite by APS reductase appear to be the key regulatory steps. Here, we review the current knowledge on regulation of these processes, with special attention given to similarities and differences.
Tipo: Journal Article Palavras-chave: METABOLIC REGULATION; NUTRIENT AND METAL TRANSPORT; NUTRITION; PRIMARY METABOLISM; SULFATE UPTAKE; SULFUR METABOLISM.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201035326fc7&uri=/notices/prodinra1/2010/12/
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Structural and functional analysis of the C-terminal STAS (sulfate transporter and anti-sigma antagonist) domain of the Arabidopsis thaliana sulfate transporter SULTR1.2 Inra
Rouached, H.; Berthomieu, P.; El Kassis, E.; Cathala, N.; Catherinot, V.; Labesse, G.; Davidian, J.C.; Fourcroy, P..
The C-terminal region of sulfate transporters from plants and animals belonging to the SLC26 family members shares a weak but significant similarity with the Bacillus sp. anti-anti-sigma protein SpoIIAA, thus defining the STAS domain (Sulfate Transporter and Anti Sigma antagonist). The present study is a structure/function analysis of the STAS domain of SULTR1.2, an Arabidopsis thaliana sulfate transporter. A 3-D model of the SULTR1.2 STAS domain was built, which indicated that it shares the SpoIIAA folds. Moreover, the phosphorylation site, which is necessary for SpoIIAA activity, is conserved in the SULTR1.2 STAS domain. The model was used to direct mutagenesis studies using a yeast mutant defective for sulfate transport. Truncation of the whole SULTR1.2...
Tipo: Journal Article Palavras-chave: HOMEOSTASIE DU FER SULTR1.2; SULFATE TRANSPORTER; BACILLUS-SUBTILIS; CHONDROCYTES.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2007fd48089a&uri=/notices/prodinra1/2010/11/
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Sultr4;1 mutant seeds have an enhanced sulphate content and modified proteome suggesting metabolic adaptations to altered sulphate compartmentalization Inra
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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Unequal functional redundancy between the two Arabidopsis thaliana high-affinity sulphate transporters SULTR1;1 and SULTR1;2 Inra
Barberon, M.; Berthomieu, P.; Clairotte, M.; Shibagaki, N.; Davidian, J.C.; Gosti, F..
In Arabidopsis, SULTR1;1 and SULTR1;2 are two genes proposed to be involved inhigh-affinity sulphate uptake from the soil solution. We address here the specific issue of their functional redundancy for the uptake of sulphate and for the accumulation of its toxic analogue selenate with regard to plant growth and selenate tolerance.• Using the complete set of genotypes, including the wild-type, each one of the single sultr1;1 and sultr1;2 mutants and the resulting double sultr1;1-sultr1;2 mutant, we performed a detailed phenotypic analysis of root length, shoot biomass, sulphate uptake, sulphate and selenate accumulation and selenate tolerance.• The results all ordered the four different genotypes according to the same functional hierarchy. Wild-type and...
Tipo: Journal Article Palavras-chave: FUNCTIONAL REDUNDANCY; HIGH-AFFINITY SULPHATE; TRANSPORTER MUTANTS; SELENATE TOLERANCE; SULPHATE CONTENT; SELENATE CONTENT.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200883826cd8&uri=/notices/prodinra1/2009/03/
Registros recuperados: 9
Primeira ... 1 ... Última
 

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