We have developed image analysis software linked to a rotating stage, allowing constraint of any user-selected region of a root at a prescribed angle during root gravitropism. This device allows the cap of a graviresponding root to reach vertical while maintaining a selected region within the elongation zone at a gravistimulated angle. Under these conditions gravitropic curvature of roots of Zea mays L. continues long after the root cap reaches vertical, indicating that a signal from outside of the cap can contribute to the curvature response.
CITATION STYLE
Wolverton, C., Mullen, J. L., Ishikawa, H., & Evans, M. L. (2002). Root gravitropism in response to a signal originating outside of the cap. Planta, 215(1), 153–157. https://doi.org/10.1007/s00425-001-0726-9
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