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Plant Biol (Stuttg) 1999; 1(1): 57-60
DOI: 10.1055/s-2007-978488
Rapid Communication

© Georg Thieme Verlag Stuttgart · New York

Physiological Evidence for the Accumulation of Restrained Wall Loosening Potential on the Growth-Inhibited Side of Graviresponding Rye Coleoptiles*

H. G. Edelmann1 , Olga Samajova2
  • 1Botanisches Institut der Universität Bonn, Abteilung Zellbiologie der Pflanzen, Bonn, Germany
  • 2Institute of Forest Ecology, Slovac Academy of Sciences, Akademicka 2, SK-94901 Nitra
* This rapid communication is dedicated to Prof. Peter Schopfer on the occasion of his 60th birthday.
Further Information

Publication History

1998

1998

Publication Date:
19 April 2007 (online)

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Abstract

Subsequent to inversion, horizontally pre-gravistimulated coleoptiles exhibit an increased gravicurvature capacity as compared to vertically pre-gravistimulated and subsequently horizontally gravistimulated coleoptiles. This indicates that gravistimulated inhibition of growth of the upper organ flank during gravicurvature is mediated via the retention of wall loosening potential. After inversion, this potential contributes to enhanced cell extension on the then physiologically lower side.

Key words

Cholodny-Went hypothesis - gravitropism - growth regulation - osmiophilic particles (OPs) - wall loosening - Secale cereale