Alleviation of rapid, futile ammonium cycling at the plasma membrane by potassium reveals K+-sensitive and -insensitive components of NH4+ transport

Futile plasma membrane cycling of ammonium (NH4+) is characteristic of low-affinity NH4+ transport, and has been proposed to be a critical factor in NH4+ toxicity. Using unidirectional flux analysis with the positron-emitting tracer 13N in intact seedlings of barley (Hordeum vulgare L.), it is shown...

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Détails bibliographiques
Publié dans:Journal of experimental botany. - 1985. - 59(2008), 2 vom: 01., Seite 303-13
Auteur principal: Szczerba, Mark W (Auteur)
Autres auteurs: Britto, Dev T, Balkos, Konstantine D, Kronzucker, Herbert J
Format: Article en ligne
Langue:English
Publié: 2008
Accès à la collection:Journal of experimental botany
Sujets:Journal Article Research Support, Non-U.S. Gov't Nitrogen Radioisotopes Quaternary Ammonium Compounds Lanthanum 6I3K30563S Potassium RWP5GA015D