THE PLANT CELL, Vol 2, Issue 3 225-233, Copyright © 1990 by American Society of Plant Biologists
Nopaline Synthase Promoter Is Wound Inducible and Auxin Inducible
G. An, M. A. Costa and S. B. Ha
Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164-6340
The activity of the nopaline synthase (nos) promoter is differentially
regulated in several plant organs. In this article we demonstrate that the
nos promoter is wound inducible in both vegetative and reproductive organs.
The induction of the nos promoter was observed in leaves, stems,
cotyledons, and various reproductive organs, suggesting that the response
is not organ specific. The wound response was further enhanced by addition
of auxins. Other growth substances had no effect on the wound-inducible nos
promoter activity. Deletion analysis of the nos promoter indicated that the
10-base pair (GCACATACGT) Z element located between -123 and -114 or an
element overlapping with this sequence is essential for the wound and auxin
responses.