In order to study the regulation of NO 3 su− absorption, experiments were performed with
Brassica napus plants submitted to a localized supply of NO 3 su− by means of a split root …

This study was conducted to determine whether the inhibition of nitrate reductase activity
(NRA; EC 1.6. 6.1) in barley (Hordeum vulgare L. var. CM-72) roots by the amino acids …

This study was undertaken to determine which of the two NO3− fluxes (influx or efflux)
across plasma membranes of root cells is the target of those amino acids which have been …

The rates of accumulation of K+, NO 3− and reduced N (N r) in shoots, relative to that of Ca
2+, were compared to the ratios K+/Ca 2+, NO 3−/Ca 2+ and N r/Ca 2+ in the xylem sap of …

Induction of an NO3-efflux system in intact barley (Hordeum vulgare L.) roots was
demonstrated. Since the measurement of NO3-efflux is dependent on its accumulation …

Kinetic parameters of the NO3− uptake system, nitrate reductase activity (NRA) and ion
distribution in 9-day old maize seedlings have been studied in response to externally …

A de‐repression mechanism based on the disappearance of 'signals' down‐regulating N
transporter activity has been proposed in the literature to explain the transient increase of …

Nitrate uptake and in vivo, nitrate reductase activity (NRA) in roots of Phaseolus vulgaris, L.
cv. Witte Krombek were measured in nitrogen‐depleted plants of varying sugar status …

Abstract Using 13NO3−, effects of various NO3− pretreatments upon NO3− influx were
studied in intact roots of barley (Hordeum vulgare L. cv Klondike). Prior exposure of roots to …

Abstract 13NO3− was used to investigate patterns of NO3− influx into roots of barley plants
(Hordeum vulgare L. cv Klondike) previously grown with (induced') or without (uninduced') a …