Uptake of Benzyladenine by Tuber Slices of Jerusalem Artichoke (Helianthus tuberosus L.) over a Wide Concentration Range | Zendy

Subhash C. Minocha | Zendy; P. Nissen | Zendy

Open Access

Uptake of Benzyladenine by Tuber Slices of Jerusalem Artichoke (Helianthus tuberosus L.) over a Wide Concentration Range

Author(s) -

Subhash C. Minocha,

P. Nissen

Publication year - 1982

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.70.2.528

Subject(s) - helianthus , jerusalem artichoke , cytokinin , kinetics , botany , chemistry , range (aeronautics) , horticulture , biology , biochemistry , physics , auxin , materials science , sunflower , quantum mechanics , composite material , gene

Uptake of the cytokinin benzyladenine by tuber slices of Jerusalem artichoke (Helianthus tuberosus L.) increased with the concentration of benzyladenine in the medium in the range 10(-8) to 10(-4) molar. The kinetics of uptake could be precisely represented by four phases of a single, multiphasic isotherm. K(m) and V(max) increased in a regular manner upon transition to higher phases. The fit to multiphasic kinetics was significantly better than the fit to cooperative kinetics or to the sum of four independent Michaells-Menten terms.

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