Planta

, Volume 215, Issue 1, pp 153–157 | Cite as

Root gravitropism in response to a signal originating outside of the cap

  • Chris Wolverton
  • Jack L. Mullen
  • Hideo Ishikawa
  • Michael L. Evans
Original Article

Abstract.

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.

Gravitropism Gravity sensing Zea (gravitropism) 

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Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • Chris Wolverton
    • 1
  • Jack L. Mullen
    • 1
  • Hideo Ishikawa
    • 1
  • Michael L. Evans
    • 1
  1. 1.Department of Plant Biology, The Ohio State University, 1735 Neil Ave., Columbus, OH 43210, USA

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