About the Cover
On the Cover: The actin-cytoskeleton is an important determinant of cellular architecture in plants. In root hair cells, actin forms longitudinal filaments, along which vesicles containing cell wall material are transported to the apex, where root hairs elongate by tip growth. Thus, actin is thought to be important for root hair development. By the characterization of the Arabidopsis root hair mutant der1 (deformed root hairs 1) that is affected in the ACTIN2 gene, Ringli et al. (pp. 1464-1472) now provide proof that the actin cytoskeleton is indeed required for this process. der1 mutants develop shorter and enlarged or stunted root hairs, depending on the strength of the mutant alleles.
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Copyright © 2007 by the American Society of Plant Biologists
