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.

journal_name

Plant Physiol

journal_title

Plant physiology

authors

Roberts JK,Pang MK

doi

10.1104/pp.100.3.1571

subject

Has Abstract

pub_date

1992-11-01 00:00:00

pages

1571-4

issue

3

eissn

0032-0889

issn

1532-2548

journal_volume

100

pub_type

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