This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via CrossRef Citing Articles via Web of Science (21) Citing Articles via Google Scholar Google Scholar Articles by Kurkdjian, A. Articles by Guern, J. Search for Related Content PubMed PubMed Citation Articles by Kurkdjian, A. Articles by Guern, J. Agricola Articles by Kurkdjian, A. Articles by Guern, J.

Articles

Influence of Fusicoccin on the Control of Cell Division by Auxins ¹

^a Centre National de la Recherche Scientifique, Laboratoire de Génétique et Physiologie du Développement des Plantes, 1 Place de l'Eglise, 91190 Gif-sur-Yvette, France

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.