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Literature DB >> 16653160

Estimation of Ammonium Ion Distribution between Cytoplasm and Vacuole Using Nuclear Magnetic Resonance Spectroscopy.

Abstract

Evidence is presented that intracellular ammonium is trapped in vacuoles of maize (Zea mays L.) root tips because of rapid movement of ammonia between cytoplasm and vacuoles. The concentration of cytoplasmic ammonium is estimated to be <15 mum at extracellular ammonium concentrations up to 1 mm. The implications for pathways of ammonium assimilation are discussed.

Entities: Chemical Species

Year: 1992 PMID： 16653160 PMCID： PMC1075822 DOI： 10.1104/pp.100.3.1571

Source DB: PubMed Journal: Plant Physiol ISSN： 0032-0889 Impact factor: 8.340

18 in total

1. Regulation of Carbon Partitioning to Respiration during Dark Ammonium Assimilation by the Green Alga Selenastrum minutum.

Authors: D H Turpin; F C Botha; R G Smith; R Feil; A K Horsey; G C Vanlerberghe
Journal: Plant Physiol Date: 1990-05 Impact factor: 8.340

2. Amine uncoupling of energy transfer in chloroplasts. I. Relation to ammonium ion uptake.

Authors: A R Crofts
Journal: J Biol Chem Date: 1967-07-25 Impact factor: 5.157

3. Observation of Cytoplasmic and Vacuolar Malate in Maize Root Tips by C-NMR Spectroscopy.

Authors: K Chang; J K Roberts
Journal: Plant Physiol Date: 1989-01 Impact factor: 8.340

4. Synthesis of [N]glutamate from [N]h(4) and [N]glycine by mitochondria isolated from pea and corn shoots.

Authors: T Yamaya; A Oaks; D Rhodes; H Matsumoto
Journal: Plant Physiol Date: 1986-07 Impact factor: 8.340

5. Kinetics of NH(4) Assimilation in Zea mays: Preliminary Studies with a Glutamate Dehydrogenase (GDH1) Null Mutant.

Authors: J R Magalhães; G C Ju; P J Rich; D Rhodes
Journal: Plant Physiol Date: 1990-10 Impact factor: 8.340

6. The role of glutamate dehydrogenase in plant nitrogen metabolism.

Authors: S A Robinson; A P Slade; G G Fox; R Phillips; R G Ratcliffe; G R Stewart
Journal: Plant Physiol Date: 1991-02 Impact factor: 8.340

7. Contribution of Malate and Amino Acid Metabolism to Cytoplasmic pH Regulation in Hypoxic Maize Root Tips Studied Using Nuclear Magnetic Resonance Spectroscopy.

Authors: J K Roberts; M A Hooks; A P Miaullis; S Edwards; C Webster
Journal: Plant Physiol Date: 1992-02 Impact factor: 8.340

4. Differential Ammonia-Elicited Changes of Cytosolic pH in Root Hair Cells of Rice and Maize as Monitored by 2[prime],7[prime]-bis-(2-Carboxyethyl)-5 (and -6)-Carboxyfluorescein-Fluorescence Ratio.

Authors: H. Kosegarten; F. Grolig; J. Wieneke; G. Wilson; B. Hoffmann
Journal: Plant Physiol Date: 1997-02 Impact factor: 8.340

5. Induction of a carbon-starvation-related proteolysis in whole maize plants submitted to Light/Dark cycles and to extended darkness

Authors:
Journal: Plant Physiol Date: 1998-08 Impact factor: 8.340

5 in total

Estimation of Ammonium Ion Distribution between Cytoplasm and Vacuole Using Nuclear Magnetic Resonance Spectroscopy.

1. Regulation of Carbon Partitioning to Respiration during Dark Ammonium Assimilation by the Green Alga Selenastrum minutum.

2. Amine uncoupling of energy transfer in chloroplasts. I. Relation to ammonium ion uptake.

3. Observation of Cytoplasmic and Vacuolar Malate in Maize Root Tips by C-NMR Spectroscopy.

4. Synthesis of [N]glutamate from [N]h(4) and [N]glycine by mitochondria isolated from pea and corn shoots.

5. Kinetics of NH(4) Assimilation in Zea mays: Preliminary Studies with a Glutamate Dehydrogenase (GDH1) Null Mutant.

6. The role of glutamate dehydrogenase in plant nitrogen metabolism.

7. Contribution of Malate and Amino Acid Metabolism to Cytoplasmic pH Regulation in Hypoxic Maize Root Tips Studied Using Nuclear Magnetic Resonance Spectroscopy.

8. Rapid induction of na/h exchange activity in barley root tonoplast.

9. Estimation of ammonium concentration in the cytosol of soybean nodules.

10. Pathways of Nitrogen Metabolism in Nodules of Alfalfa (Medicago sativa L.).

Review 1. NMR analysis of plant nitrogen metabolism.

2. Ammonium Uptake by Rice Roots (I. Fluxes and Subcellular Distribution of 13NH4+).

3. Stimulation of Nitrate and Nitrite Efflux by Ammonium in Barley (Hordeum vulgare L.) Seedlings.

4. Differential Ammonia-Elicited Changes of Cytosolic pH in Root Hair Cells of Rice and Maize as Monitored by 2[prime],7[prime]-bis-(2-Carboxyethyl)-5 (and -6)-Carboxyfluorescein-Fluorescence Ratio.

5. Induction of a carbon-starvation-related proteolysis in whole maize plants submitted to Light/Dark cycles and to extended darkness