Nitrogen availability is a major factor determining plant growth and productivity. Plants
acquire nitrogen nutrients from the soil through their roots mostly in the form of ammonium …

Ammonium is a major inorganic nitrogen source for plants. At low external supplies,
ammonium promotes plant growth, while at high external supplies it causes toxicity …

Application of chemical fertilizers, especially nitrogen (N), to crops has increased
dramatically in the last half century and therefore developing crop varieties with improved N …

Highlights•Myriad transporters ensures N uptake and its distribution throughout the
plant.•Distinct glutamine synthetase isoenzymes contribute to meet the N demand under …

Ammonia (ammonium ion under physiological conditions) is one of the key nitrogen sources
in cellular amino acid biosynthesis. It is continuously produced in living organisms by a …

The plasma membrane (PM) is possibly the most diverse biological membrane of plant cells;
it separates and guards the cell against its external environment. It has an extremely …

Cell surface receptors govern a multitude of signalling pathways in multicellular organisms.
In plants, prominent examples are the receptor kinases FLS2 and BRI1, which activate …

Ion transport in plants is not only strictly regulated on a transcriptional level, but it is also
regulated posttranslationally. Enzyme modifications such as phosphorylation provide rapid …

Endocytosis and endosomal trafficking are essential processes in cells that control the
dynamics and turnover of plasma membrane proteins, such as receptors, transporters, and …

Plants uptake and assimilate nitrogen from the soil in the form of nitrate, ammonium ions,
and available amino acids from organic sources. Plant nitrate and ammonium transporters …