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THE RELATIONSHIPS AMONG UMBELLIFERONE, GROWTH, AND PEROXIDASE LEVELS IN CUCUMBER ROOTS
Author(s) -
Jankay Peter,
Muller Walter H.
Publication year - 1976
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1976.tb11792.x
Subject(s) - elongation , umbelliferone , swelling , peroxidase , biology , botany , point of delivery , biophysics , horticulture , biochemistry , enzyme , chemical engineering , coumarin , ultimate tensile strength , materials science , engineering , metallurgy
Umbelliferone decreases the elongation rate and initiates a swelling response in cucumber roots. Associated with these growth effects are increases in peroxidase activity in water soluble, salt soluble, and wall bound fractions. The effect on elongation is reversible and is separated in time from the swelling response. Increased peroxidase levels appear after the elongation rate has been reduced but coincident with the swelling response. It is suggested that umbelliferone effects axial elongation and radial expansion through different mechanisms.