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. 1992 Nov;100(3):1571-4.
doi: 10.1104/pp.100.3.1571.

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

J K Roberts  1 , M K Pang
Affiliations

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

J K Roberts et al. Plant Physiol. 1992 Nov.

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.

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References

    1. Biochemistry. 1981 Sep 15;20(19):5389-94 - PubMed
    1. Plant Physiol. 1989 Jan;89(1):197-203 - PubMed
    1. Plant Physiol. 1990 Oct;94(2):647-56 - PubMed
    1. Plant Physiol. 1986 Jul;81(3):754-7 - PubMed
    1. Plant Physiol. 1989 Jul;90(3):779-82 - PubMed

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