Open AccessInfluence of Fusicoccin on the Control of Cell Division by Auxins
Author(s) -
Armen Kurkdjian,
Jean-Jacques Leguay,
J. Guern
Publication year - 1979
Publication title -
plant physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1104/pp.64.6.1053
Subject(s) - fusicoccin , auxin , acer pseudoplatanus , cell division , intracellular , stimulation , extracellular , microbiology and biotechnology , biology , cell , chemistry , biochemistry , biophysics , botany , atpase , enzyme , gene , neuroscience
An indirect stimulation of cell division by fusicoccin is demonstrated. The distribution of 2,4-dichlorophenoxyacetic acid molecules between Acer pseudoplatanus cells and their culture medium is strongly modified by a fusicoccin treatment, through the extracellular acidification induced by the toxin. As a consequence, a stimulation of cell division is observed when the intracellular auxin concentration is sufficiently increased to reach the threshold control level (Leguay JJ, J Guern 1977 Plant Physiol 60: 265-270).Independently of this indirect action on cell division, the number of cells per cluster is decreased and the volume of the cells increased in fusicoccintreated cells which show a typical enlargement response.