title: Modulation of the number of membrane-bound auxin-binding sites during the growth of batch-cultured tobacco cells.
abstract: We studied the modulation of the number of membrane-bound naphthaleneacetic acid (NAA)-binding sites during the growth cycle of tobacco cells in batch culture. Both cell number and specific NAA-binding increased exponentially, but at different rates and for different periods. This caused a characteristic modulation of the number of binding sites per cell during the growth cycle: During the first day of the lag phase this number decreased; in the exponential phase it rose markedly, and in the stationary phase it was constant.
authors.affiliation: Department of Plant Morphogenesis, Botanisch Laboratorium, Rijksuniversiteit Leiden, Nonnensteeg 3, 2311 VJ, Leiden, The Netherlands.
authors.forename: D
authors.initials: D
authors.lastname: Vreugdenhil
authors.forename: A
authors.initials: A
authors.lastname: Burgers
authors.forename: P A
authors.initials: PA
authors.lastname: Harkes
authors.forename: K R
authors.initials: KR
authors.lastname: Libbenga