mesembryanthemum nodiflorum/nicotine

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The expression of an aquaporin promoter from Mesembryanthemum crystallinum in tobacco.

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The promoter region of the MipB gene encoding an aquaporin from Mesembryanthemum crystallinum was isolated and used in a transcriptional fusion to control uidA expression in tobacco. The sequence of the promoter was determined for 2 kb upstream of the translation initiation site. Three start sites

Expression of the PIP aquaporin promoter-MipA from the common ice plant in tobacco.

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The reasons for the presence of a multitude of plasma membrane-localized water channels (PIP aquaporins) in plants may be functional differences in water (or other solute) transport, or in developmental, environmental or tissue-specific regulation of expression. We compared tissue- and cell-specific

Expression of a phosphoenolpyruvate carboxylase promoter from Mesembryanthemum crystallinum is not salt-inducible in mature transgenic tobacco.

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The 5' flanking region of a salt-stress-inducible, CAM-specific phosphoenolpyruvate carboxylase (PEPC) gene from the facultative halophyte Mesembryanthemum crystallinum, was fused to the beta-glucuronidase (GUS) reporter gene and introduced into Nicotiana tabacum SR1. The Ppc1 promoter displayed

The role of vacuolar malate-transport capacity in crassulacean acid metabolism and nitrate nutrition. Higher malate-transport capacity in ice plant after crassulacean acid metabolism-induction and in tobacco under nitrate nutrition.

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Anion uptake by isolated tonoplast vesicles was recorded indirectly via increased H(+)-transport by H(+)-pumping of the V-ATPase due to dissipation of the electrical component of the electrochemical proton gradient, Deltamu(H+), across the membrane. ATP hydrolysis by the V-ATPase was measured

Enhanced salt tolerance of transgenic tobacco plants by co-expression of PcINO1 and McIMT1 is accompanied by increased level of myo-inositol and methylated inositol.

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Introgression and functional expression of either the PcINO1 (L: -myo-inositol 1-phosphate synthase or MIPS coding gene from the wild halophytic rice, Porteresia coarctata) or McIMTI (inositol methyl transferase, IMTI coding gene from common ice plant Mesembryanthemum crystallinum) has earlier been

The photosynthetic response of tobacco plants overexpressing ice plant aquaporin McMIPB to a soil water deficit and high vapor pressure deficit.

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We investigated the photosynthetic capacity and plant growth of tobacco plants overexpressing ice plant (Mesembryanthemum crystallinum L.) aquaporin McMIPB under (1) a well-watered growth condition, (2) a well-watered and temporal higher vapor pressure deficit (VPD) condition, and (3) a soil water

A novel Mg(2+)-dependent O-methyltransferase in the phenylpropanoid metabolism of Mesembryanthemum crystallinum.

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Upon irradiation with elevated light intensities, the ice plant (Mesembryanthemum crystallinum) accumulates a complex pattern of methylated and glycosylated flavonol conjugates in the upper epidermal layer. Identification of a flavonol methylating activity, partial purification of the enzyme, and

Cloning, localization and expression analysis of vacuolar sugar transporters in the CAM plant Ananas comosus (pineapple).

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In photosynthetic tissues of the CAM plant pineapple (Ananas comosus), storage of soluble sugars in the central vacuole during the daytime and their remobilization at night is required to provide carbon skeletons for nocturnal CO(2) fixation. However, soluble sugars produced photosynthetically must

Influence of starch deficiency on photosynthetic and post-photosynthetic carbon isotope fractionations.

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Carbon isotope (13C) fractionations occurring during and after photosynthetic CO2 fixation shape the carbon isotope composition (δ13C) of plant material and respired CO2. However, responses of 13C fractionations to diel variation in starch metabolism in the leaf are not fully understood. Here we

Characterization of a salt-responsive 24-kilodalton glycoprotein in Mesembryanthemum crystallinum.

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A concanavalin A (Con A)-binding polypeptide with a molecular mass of 24 kD (termed "SRgp24") was associated with the intercellular space of Mesembryanthemum crystallinum L. callus. When callus was grown in medium containing between 0 and 100 mM NaCl, SRgp24 was detected by Con A binding. Increasing

Isolation and characterization of a polyubiquitin gene and its promoter region from Mesembryanthemum crystallinum.

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Transcript levels of the polyubiquitin gene McUBI1 had been reported to be constant during Crassulacean acid metabolism (CAM) induction in the facultative CAM plant, Mesembryanthemum crystallinum. Here, we report the sequences of the full-length cDNA of McUBI1 and its promoter, and validation of the

Salt induction and the partial purification/characterization of phosphoenolpyruvate carboxylase protein-serine kinase from an inducible crassulacean-acid-metabolism (CAM) plant, Mesembryanthemum crystallinum L.

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Treatment of the common ice plant (Mesembryanthemum crystallinum) with high salinity caused the well-documented increase in phosphoenolpyruvate carboxylase (PEPC) protein and a concomitant rise in the activity of a Ca(2+)-independent PEPC-kinase (PEPC-PK). When the plants were irrigated with 0.5 M

The 32 kDa tonoplast polypeptide Di associated with the V-type H+-ATPase of Mesembryanthemum crystallinum L. in the CAM state: A proteolytically processed subunit B?

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In the facultative halophyte Mesembryanthemum crystallinum, the salt- or age-induced transition to crassulacean acid metabolism (CAM) leads to the occurrence of a tonoplast-bound 32 kDa polypeptide (Di). The alignment of its N-terminal protein sequence with protein sequences of recently cloned

Arabidopsis INOSITOL TRANSPORTER4 mediates high-affinity H+ symport of myoinositol across the plasma membrane.

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Four genes of the Arabidopsis (Arabidopsis thaliana) monosaccharide transporter-like superfamily share significant homology with transporter genes previously identified in the common ice plant (Mesembryanthemum crystallinum), a model system for studies on salt tolerance of higher plants. These ice

Differential immunological cross-reactions with antisera against the V-ATPase of Kalanchoë daigremontiana reveal structural differences of V-ATPase subunits of different plant species.

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Two antisera (ATP88 and ATP95) raised against the V-ATPase holoenzyme of Kalanchoë daigremontiana were tested for their cross-reactivity with subunits of V-ATPases from other plant species. V-ATPases from Kalanchoë blossfeldiana, Mesembryanthemum crystallinum, Nicotiana tabacum, Lycopersicon

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