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 …

Sodium uptake from the soil is a major cause of salinity toxicity in plants, yet little is known
about the mechanisms that underlie Na+ influx. We have characterized voltage independent …

Inward-rectifying potassium (K+ in) channels in guard cells have been suggested to provide
a pathway for K+ uptake into guard cells during stomatal opening. To test the proposed role …

Plant hormones, light receptors, pathogens, and abiotic signals trigger elevations in the
cytosolic calcium concentration, which mediate physiological and developmental responses …

Regulation of Ca2+ transport determines the duration of a Ca2+ signal, and hence, the
nature of the biological response. Ca2+/H+ antiporters such as CAX1 (cation exchanger 1) …

Ca 2+ levels in plants, fungi, and bacteria are controlled in part by H+/Ca 2+ exchangers;
however, the relationship between primary sequence and biological activity of these …

Since the first molecular structures of plant transporters were discovered over a decade ago,
considerable advances have been made in the study of plant membrane transport, but we …