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Mechanism of Action of the Herbicide 2‐Chloro‐3(4‐chlorophenyl) Propionate and its Methyl Ester: Interaction with Cell Responses Mediated by Auxin
Author(s) -
ANDREEV G. K.,
AMRHEIN N.
Publication year - 1976
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.1399-3054.1976.tb03953.x
Subject(s) - coleoptile , auxin , avena , chemistry , biochemistry , biology , botany , gene
Chlorfenprop‐methyl (the herbicidal component of BIDISIN®), and to a lesser extent the free acid, chlorfenprop, inhibit auxin mediated cell responses in coleoptiles of Avena sativa L. and Zea mays L., such as cell elongation, auxin‐uptake, ‐transport and ‐metabolism, acidification of growth media, and binding of naphthyl‐I‐acetic acid to auxin‐specific binding sites in homo‐genates of corn coleoptiles. Within a very narrow concentration range (1 to 2μM) chlorfenprop‐methyl arrests growth from 0 to 100% in sensitive cultivars. The compound displays neither auxin‐nor anti‐auxin‐activity, and only the l (—)‐enantiomer is active. The interaction of the herbicide with auxin at the level of membranes is proposed.