Abstract
The roots of Arabidopsis seedling exhibit wavy growth patterns on tilted agar surfaces by continual touching to the surface. The wav2 mutant shows a shorter-pitch wavy growth pattern in comparison with that of wild type. We reveal that, in this research, helical growths in respond to touch stimulation, especially right-handed growth, are enhanced in the mutant. Curvatures of in respond to light and gravity are also enhanced in the root of wav2. Those results suggest that WAV2 is involved in the mechanism to suppress the helical growths, especially right-handed growth, in the roots, and that it regulates the changes of the growth pattern of roots in respond to various environmental stimuli through that mechanism. Map-based cloning revealed that WAV2 encodes a novel protein with a transmembrane domain. In this meeting, we discuss the function of WAV2 by addition of results on analyses of gene expression and subcellular localization of WAV2.
