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Página 1 a partir de 26 resultados
Influence of ammonium and nitrate nutrition on the pyridine and adenine nucleotides of soybean and sunflower.
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Total pyridine nucleotide concentration of root tissue for young soybean (Glycine max var. Bansei) and sunflower (Helianthus annuus L. var. Mammoth Russian) plants is the same with either ammonium or nitrate, but nitrate results in an increased proportion of total oxidized plus reduced NADP
Adenine phosphoribosyltransferase in plant tissues: some effects of kinetin on enzymic activity.
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Adenine phosphoribosyltransferase activity was measured in extracts of soybean (Glycine max var. Acme) callus and of senescing barley leaves (Hordeum distichon c.v. Prior). The enzyme from soybean callus had Michaelis constants for adenine and 5-phosphoribosyl pyrophosphate of 1.5 and 7.5 mum
Responses of adenine nucleotides in germinating soybean embryonic axes to exogenously applied adenine and adenosine.
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The ATP content of soybean (Glycine max [L.] Merr. cv. Kent) axes incubated for 3 hours in 1 mm solutions of adenine and adenosine increased over 100% and 75%, respectively, over axes incubated in water. The increase in ATP was primarily due to the conversion of these purines to nucleotides via the
Regeneration of soybean (Glycine max L. Merr.) from cultured primary leaf tissue.
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A reproducible method for regeneration of plants from primary leaf tissue of 27 varieties of soybean (Glycine max), encompassing maturity groups 00 to VIII, has been developed. Progeny from seeds recovered from regenerated plants appear normal. Best regeneration was from leaf explants (2.1-4.0 mm)
Adenine binding sites of the lectin from lima beans (Phaseolus lunatus).
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A single high-affinity binding site for adenine and related compounds was identified in the lima bean lectin (LBL) component III tetramer. This site is identical with the high affinity site for 2,6-toludinyl-naphthalenesulfonate described previously (Roberts, D. D., and Goldstein, I. J. (1982) J.
Proteomic identification and characterization of a novel peroxisomal adenine nucleotide transporter supplying ATP for fatty acid beta-oxidation in soybean and Arabidopsis.
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We have identified the novel protein Glycine max PEROXISOMAL ADENINE NUCLEOTIDE CARRIER (Gm PNC1) by proteomic analyses of peroxisomal membrane proteins using a blue native/SDS-PAGE technique combined with peptide mass fingerprinting. Gm PNC1, and the Arabidopsis thaliana orthologs At PNC1 and At
Cytokinin modification of metabolism of p-coumaric acid by a cell suspension of soybean (Glycine max (L.) Merrill).
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Cells of a soybean tissue strain suspended in an aerated liquid medium caused the disappearance of p-coumaric acid from the medium. The rate of disappearance was modified by cytokinins. When the coumarate and the cytokinin were added to the medium simultaneously, disappearance was increased if the
Cytokinin inhibition of respiration by cells and mitochondria of soybean, Glycine max (L.) Merrill.
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Cells of a soybean tissue strain, suspended in an aerated liquid medium, caused disappearance of p-coumaric acid from the medium and oxidation of guaiacol, benzidine, pyrogallol, L-dihydroxyphenylalanine and L-epinephrine. Both the disappearance and the oxidations were inhibited by
Substituted nitroguanidines provide cytokinin activity during in vitro cultivation of plant tissues.
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Synthetic nitroguanidine derivatives can be used as alternatives to the traditional adenine-containing cytokinins used in plant tissue culture. First, nitroguanidine derivatives (NG) mimicked the typical activity of two standard cytokinins, 6-benzylaminopurine (BAP) and 2-isopentenyladenine (2iP) in
A purL mutant of Sinorhizobium fredii HH103 is symbiotically defective and altered in its lipopolysaccharide.
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The pleiotropic phenotype of an auxotrophic purL mutant (SVQ295) of Sinorhizobium fredii HH103 has been investigated. SVQ295 forms colonies that are translucent, produce more slime and absorb less Congo red than those of wild-type strain HH103. SVQ295 did not grow in minimal medium unless the
The stability and biological activity of cytokinin metabolites in soybean callus tissue.
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The activity, uptake and metabolism of cytokinin metabolites was determined in soybean (Glycine max (L.) Merr.) callus tissue. The following activity sequence was established: zeatin riboside (ZR)>zeatin (Z)>O-glucosides of Z, ZR and their dihydro derivatives>lupinic acid (an alanine conjugate of
Cytokinin inhibition of respiration in mitochondria from six plant species.
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The influence of 6-benzylaminopurine (BAP) on the respiration by mitochondria from bush bean (Phaseolus vulgaris L.), mung bean (P. aureus Roxburgh), soybean [Glycine max (L.) Merrill], maize (Zea mays L.), pea (Pisum sativum L.), and wheat (Triticum aestivum L.) was examined. BAP, a synthetic
Effectiveness of phenoxyl radicals generated by peroxidase/H2O2-catalyzed oxidation of caffeate, ferulate, and p-coumarate in cooxidation of ascorbate and NADH.
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The rate of ascorbate and nicotinamide adenine dinucleotide plus hydrogen (NADH) cooxidation (i.e., their nonenzymic oxidation by peroxidase/H2O2-generated phenoxyl radicals of three hydroxycinnamates: caffeate, ferulate and p-coumarate) was studied in vitro. The reactions initiated by different
GmPTF1, a novel transcription factor gene, is involved in conferring soybean tolerance to phosphate starvation.
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Phosphorus plays a pivotal role in plant growth and development. In this study, we isolated and characterized GmPTF1, a basic helix-loop-helix (bHLH) transcription factor (TF) gene from soybean (Glycine max) with tolerance to inorganic phosphate (Pi) starvation. Alignment analysis indicated that
Differential responses of B vitamins in black soybean seeds.
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This study was aimed to determine the contents and the association of B vitamins from seeds of 10 black and one yellow soybean (Glycine max (L.) Merr.) varieties with either green or yellow cotyledon. Thiamine, flavin adenine dinucleotide (FAD), riboflavin and total riboflavin were found highest in
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