A guanylyl cyclase has been recently identified in Arabidopsis but, despite the use of
pharmacological inhibitors to infer roles of the second messenger 3′, 5′-cyclic guanosine …

In Chlamydomonas reinhardtii mutants defective at the structural locus for nitrate reductase
(nit-1) or at loci for biosynthesis of the molybdopterin cofactor (nit-3, nit-4, or nit-5 and nit-6) …

Ammonium transport is a key process in nitrogen metabolism. In the green alga
Chlamydomonas, we have characterized molecularly the largest family of ammonium …

The nitrogen compounds nitrate and ammonium are the minerals that plants need in large
quantities and which limit their growth in temperate zones. The nitrate assimilation pathway …

This article discusses how nitrate assimilation is integrated with nitrate uptake, with
ammonium assimilation and amino acid synthesis, with pH regulation, and with the sugar …

The nit-2 gene of Neurospora crassa encodes a trans-acting regulatory protein that activates
the expression of a number of structural genes which code for nitrogen catabolic enzymes …

The nitrogen source for most plants is nitrate, which is assimilated by an energetically
expensive process1. A full set of genes encode the structural elements for the nitrate …

An international symposium on Nitrate Assimilation, Molecular and Genetic Aspects was
held in Bombannes, France, May 13 to 18, 1990. Drs. Michele Caboche, Pierre Rouze, and …

Nitrate reductase (NR) is important for higher land plants, as it catalyzes the rate-limiting
step in the nitrate assimilation pathway, the two-electron reduction of nitrate to nitrite …

In many plants, nitrogen represents 2 to 6% of dry matter, most of it being present in the form
of amino acids, proteins, or nucleic acids. In these organic compounds, nitrogen exists in its …