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Type: Journal article
Title: Ammonium toxicity and the real cost of transport
Author: Kronzucker, Herbert J.
Britto, Dev T.
Davenport, Romola J.
Tester, Mark Alfred
Citation: Trends in Plant Science, 2001; 6 (8):335-337
Publisher: Elsevier
Issue Date: 2001
School/Discipline: School of Agriculture, Food and Wine : Agricultural and Animal Science
Abstract: Recently, it has been proposed that ammonium is toxic to barley because of the energetic cost of pumping ammonium that has leaked into root cells back into the soil. This does not occur in rice because high levels of ammonium reduce the potential difference across the plasma membrane of rice – whereas the potential difference in barley appears to be ammonium insensitive. These results highlight the potentially high costs of membrane transport, and thus the central importance of transport processes in plants.
Keywords: Ion channels; ammonium flux; transport energetics; membrane potential; cellular energy balance
DOI: 10.1016/S1360-1385(01)02022-2
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Appears in Collections:Agriculture, Food and Wine publications

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