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Action of Abscisic Acid on Auxin Transport and its Relation to Phototropism
Author(s) -
NAQVI SHAMSHAD M.,
ENGVILD K. C.
Publication year - 1974
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1974.tb03657.x
Subject(s) - abscisic acid , phototropism , coleoptile , auxin , zea mays , chemistry , biophysics , biology , biochemistry , blue light , optics , physics , agronomy , gene
The action of abscisic acid on the kinetics of auxin transport through Zea mays L. (cv. Goudster) coleoptiles has been investigated. Abscisic acid applied simultaneously with indoleacetic acid‐2‐ 14 C in the donor block reduced the transport intensity without materially affecting the basipetal velocity or the uptake. No effect on acropetal transport was observed. The data have been used to discuss the similarities in effects of abscisic acid and visible radiation and a hypothesis is proposed to explain the phenomena of phototropism.