About the Cover
On the Cover: Calcium-dependent protein kinases (CDPKs) have been implicated to play important roles in signal transduction. However, specific functions of most CDPKs remain unknown. In this issue, Choi et al. (pp. 1750-1761) demonstrate that an Arabidopsis CDPK, AtCPK32, is involved in abscisic acid (ABA) response. AtCPK32 interacts with a transcriptional regulator of ABA-responsive gene expression, ABF4, and the physiological relevance of the AtCPK32-ABF4 interaction is supported by their temporal and spatial expression patterns. The cover photograph shows the ß-glucuronidase, (GUS) staining pattern of an Arabidopsis seedling that carries an AtCPK32 promoter-GUS reporter construct. The staining pattern is very similar to that of ABF4 (J. Kang, H. Choi, M. Im, S.Y. Kim [2002] Plant Cell 14: 343-357). The image was created by Ji Hye Park and Soo Young Kim.
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Copyright © 2008 by the American Society of Plant Biologists
