The last ten years have witnessed major advances in our understanding of zinc transporters
and their regulation in eukaryotic organisms. Two families of transporters, the ZIP (Zrt-, I rt …

Two electrogenic H+‐pumps, the vacuolar type H+‐ATPase (V‐ATPase) and the vacuolar
pyrophosphatase, coexist at membranes of the secretory pathway of plants. The V‐ATPase …

Uptake and translocation of cationic nutrients play essential roles in physiological processes
including plant growth, nutrition, signal transduction, and development. Approximately 5% of …

A total of 45 genes encoding for P-type ATPases have been identified in the complete
genome sequence of Arabidopsis. Thus, this plant harbors a primary transport capability not …

Iron uptake from the soil is a tightly controlled process in plant roots, involving specialized
transporters. One such transporter, IRT1, was identified in Arabidopsis thaliana and shown …

▪ Abstract Regulation of the contents and volume of vacuoles in plant cells depends on the
coordinated activities of transporters and channels located in the tonoplast (vacuolar …

The ZIP superfamily of transporters plays important roles in metal ion uptake in diverse
organisms. There are 12 ZIP-encoding genes in humans, and we hypothesize that many of …

The phytohormone auxin is important in virtually all aspects of plant growth and
development, yet our understanding of auxin homeostasis is far from complete. Plants use …

The global population is expected to reach 7 billion by the year 2013. How are we going to
feed the world, prevent further degradation of our environment, and begin to reverse the …

The ammonium ion is an indispensable nitrogen source for crops, especially paddy rice
(Oryza sativa L. cv Nipponbare). Until now, it has been impossible to measure ammonium …