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- Title
Inhibition of the amino-acid co-transport carrier of Lemna gibba by incorporation of p-fluorophenylalanine.
- Authors
Jung, K. -D.; Lüttge, U.
- Abstract
In Lemna gibba L. a 2 h pretreatment with the amino-acid analogue p-fluorophenylalanine p-FPA inhibited subsequent uptake of L-alanine and reduced the transient depolarization of the plasmalemma caused by L-alanine. Uptake of 3-0-methylglucose was less affected. There was no effect of p-fluorophenylalanine on the resting potential or on the fusicoccin- or light-dependent hyperpolarization of the cells. Furthermore, fusicoccin-stimulation of uptake of L-alanine and 3-0-methylglucose was also unaffected. The results suggest that p-FPA pretreatment selectively acts on the H+-amino-acid co-transport carrier, that the H+-hexose co-transport carrier is much less affected, and that the proton pump appears to be unaffected by p-FPA.
- Subjects
AMINO acids; CELL membranes; LEMNA; DUCKWEEDS; SPATHIFLORAE; HEXOSE phosphates
- Publication
Physiologia Plantarum, 1982, Vol 55, Issue 2, p231
- ISSN
0031-9317
- Publication type
Article
- DOI
10.1111/j.1399-3054.1982.tb02293.x