About the Cover
On the Cover: In all cells, the use of
Ca2+ as a second messenger requires precise regulation of
influx and efflux pathways. In animal cells, one important efflux
pathway is provided by a family of calmodulin-dependent
Ca2+ pumps located in the plasma membrane. Hong et al. (pp.
1165-1175) identified a unique member of this family in the ER of
Arabidopsis root cells. The photograph on the cover shows a
pseudocolored image of this Ca2+ pump tagged with a green
fluorescent protein and expressed in epidermal cells of Arabidopsis
roots. The bulging cell is forming a root hair. (Image by Audrey M. Ichida and Masaaki Fujuki.)
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Copyright © 2007 by the American Society of Plant Biologists
