Physiological studies have established that plants acquire their NO− 3 from the soil through
the combined activities of a set of high-and low-affinity NO− 3 transport systems, with the …

Current global nitrogen fertilizer use has reached approximately one hundred billion kg per
annum. In many agricultural systems, a very substantial portion of this applied nitrogen …

Publisher Summary This chapter discusses the physiological causes and ecological
consequences of inherent variation in growth rate among higher plants. When grown under …

This paper reports the identification and functional expression of a gene that is involved in
nitrate uptake in plants, a process essential for the assimilation of nitrate and the biological …

Background Plants can utilize two major forms of inorganic N: NO3−(nitrate) and NH4+
(ammonium). In some cases, the preference of one form over another (denoted as β) can …

Inorganic nitrogen concentrations in soil solutions vary across several orders of magnitude
among different soils and as a result of seasonal changes. In order to respond to this …

Nitrogen (N) is the most important, essential nutrient for all living organisms on earth; it is
present in a number of complex organic molecules and plays extremely important roles in …

The availability of mineral nutrients in the soil dramatically fluctuates in both time and space.
In order to optimize their nutrition, plants need efficient sensing systems that rapidly signal …

Abstract Four low-affinity (NRT1), and seven high-affinity (NRT2) nitrate transporter gene
homologues have been identified in Arabidopsis thaliana. We investigated the transcript …

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 …