Search Results - "Roberts, J. M. K."

Multiple host shifts by the emerging honeybee parasite, Varroa jacobsoni by Roberts, J. M. K., Anderson, D. L., Tay, W. T.

“…Host shifts are a key mechanism of parasite evolution and responsible for the emergence of many economically important pathogens. Varroa destructor has been a…”
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A novel strain of sacbrood virus of interest to world apiculture by Roberts, J.M.K., Anderson, D.L.

“…[Display omitted] •Sacbrood virus (SBV) infecting Apis mellifera in New Guinea is a distinct serotype.•Recombination was found in several SBV strains but not…”
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Study of plant metabolism in vivo using NMR spectroscopy by ROBERTS, J. K. M

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Quantitation of rates of transport, metabolic fluxes, and cytoplasmic levels of inorganic carbon in maize root tips during K+ ion uptake by Chang, K. (University of California, Riverside, CA), Roberts, J.K.M

“…Our aim was to determine whether fixation of inorganic carbon (Ci), due to phosphoenolpyruvate carboxylase activity, is limited by the availability of Ci in…”
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Patterns of Protein Synthesis and Tolerance of Anoxia in Root Tips of Maize Seedlings Acclimated to a Low-Oxygen Environment, and Identification of Proteins by Mass Spectrometry by William W. P. Chang, Huang, Lan, Shen, Min, Webster, Cecelia, Burlingame, Alma L., Justin K. M. Roberts

“…Tolerance of anoxia in maize root tips is greatly improved when seedlings are pretreated with 2 to 4 h of hypoxia. We describe the patterns of protein…”
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NMR adventures in the metabolic labyrinth within plants by Roberts, Justin K.M

“…The era of metabolic engineering has begun, but there is only limited knowledge about metabolic fluxes and how they are regulated in plants. Particular…”
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Growth, water relations, and accumulation of organic and inorganic solutes in roots of maize seedlings during salt stress by Gonzalez Rodriguez, H. (Universidad Autonoma de Nuevo Leon, Nuevo Leon, Mexico.), Roberts, J.K.M, Jordan, W.R, Drew, M.C

“…Seedlings of maize (Zea mays L. cv Pioneer 3906), hydroponically grown in the dark, were exposed to NaCl either gradually (salt acclimation) or in one step…”
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Contribution of malic enzyme, pyruvate kinase, phosphoenolpyruvate carboxylase, and the Krebs cycle to respiration and biosynthesis and to intracellular pH regulation during hypoxia in maize root tips observed by nuclear magnetic resonance imaging and gas chromatography-mass spectrometry by Edwards, S, Nguyen, B.T, Do, B, Roberts, J.K.M

“…In vivo pyruvate synthesis by malic enzyme (ME) and pyruvate kinase and in vivo malate synthesis by phosphoenolpyruvate carboxylase and the Krebs cycle were…”
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Improved cytoplasmic pH regulation, increased lactate efflux, and reduced cytoplasmic lactate levels are biochemical traits expressed in root tips of whole maize seedlings acclimated to a low-oxygen environment by Xia, J.H, Roberts, J.K.M

“…We tested the hypothesis (J.-H. Xia and P.H. Saglio [1992] Plant Physiol 100: 40-46) that the enhanced ability of maize (Zea mays) root tips to survive anoxia,…”
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Regulation of H+ extrusion and cytoplasmic pH in maize root tips acclimated to a low-oxygen environment by Xia, J.H. (University of California, Riverside, CA.), Roberts, J.K.M

“…We tested the hypothesis that H+ extrusion contributes to cytoplasmic pH regulation and tolerance of anoxia in maize (Zea mays) root tips. We studied root tips…”
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Nucleotide levels do not critically determine survival of maize root tips acclimated to a low-oxygen environment by Xia, J.H. (University of California, Riverside, CA.), Saglio, P, Roberts, J.K.M

“…We tested the hypothesis that ATP levels and energy charge determine the resistance of maize (Zea mays) root tips to anoxia. We focused on root tips of whole…”
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Identification of an isozyme form of protein synthesis initiation factor 4F in plants by BROWNING, K. S, WEBSTER, C, ROBERTS, J. K. M, RAVEL, J. M

“…We showed previously that wheat germ extracts contain two forms of protein synthesis initiation factor 4F that have very similar functional properties…”
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Contribution of glutamate dehydrogenase to mitochondrial glutamate metabolism studied by 13C and 31P nuclear magnetic resonance by Aubert, S., Bligny, R., Douce, R., Gout, E., Ratcliffe, R.G., Roberts, J.K.M.

“…The relative contribution of glutamate dehydrogenase (GDH) and the aminotransferase activity to mitochondrial glutamate metabolism was investigated in dilute…”
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Nucleotide availability in maize (Zea mays L.) root tips : estimation of free and protein-bound nucleotides using 31-P-nuclear magnetic resonance and a novel protein-ligand-binding assay by HOOKS, M. A, SHEARER, G. C, ROBERTS, J. K. M

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Hypoxia enhances phosphorylation of eukaryotic initiation factor 4A in maize root tips by Webster, C. (University of California, Riverside, CA), Gaut, R.L, Browning, K.S, Ravel, J.M, Roberts, J.K.M

“…We have identified two isoforms of initiation factor 4A (eIF-4A) in maize root tips, with distinct isoelectric points and similar molecular mass (approximately…”
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Estimation of ammonium ion distribution between cytoplasm and vacuole using nuclear magnetic resonance spectroscopy by Roberts, J.K.M, Pang, M.K.L

“…Evidence is presented that intracellular ammonium is trapped in vacuoles of maize (Zea mays L.) root tips because of rapid movement of ammonia between…”
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Dependence of Ethanolic Fermentation, Cytoplasmic pH Regulation, and Viability on the Activity of Alcohol Dehydrogenase in Hypoxic Maize Root Tips by Justin K. M. Roberts, Keejong Chang, Webster, Cecelia, Callis, Judy, Walbot, Virginia

“…We examined the role of alcohol dehydrogenase (ADH) in the metabolism and survival of hypoxic maize (Zea mays L.) root tips. The dependence of the rate of…”
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Elongation and termination reactions of protein synthesis on maize root tip polyribosomes studies in a homologous cell-free system by WEBSTER, C, CHANG-YUB KIM, ROBERTS, J. K. M

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Further evidence that cytoplasmic acidosis is a determinant of flooding intolerance in plants by Roberts, J.K.M, Andrade, F.H, Anderson, I.C

“…We present two pieces of evidence that regulation of cytoplasmic pH near neutrality is a prerequisite for survival of root tips during hypoxia. First, blackeye…”
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Cooperation and competition between adenylate kinase, nucleoside diphosphokinase, electron transport, and ATP synthase in plant mitochondria studied by 31P-nuclear magnetic resonance by Justin K. M. Roberts, Aubert, Serge, Gout, Elisabeth, Bligny, Richard, Douce, Roland

“…Nucleotide metabolism in potato (Solanum tuberosum) mitochondria was studied using 31P-nuclear magnetic resonance spectroscopy and the O2 electrode…”
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