About the Cover
On the Cover: The compound leaves of Samanea saman (background) unfold by straightening of the motor organs, pulvini (encircled). This involves efflux of K+ from cells in the upper one-half of the pulvinus via K+-efflux channels. A patch-clamp pipette attached to one of these motor cell protoplasts (inset) recorded the activity of K+-efflux channel in a small patch of the membrane. The blue-colored records are single-channel K+ currents evoked by illumination with blue light (BL), those colored red are evoked during darkness (DK). Upward "jumps" and prevalence of higher levels in the blue records signify higher activity of K+-efflux channels evoked by blue light (Suh et al., pp. 833-843).
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Copyright © 2007 by the American Society of Plant Biologists
