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- Title
EFFECT OF DICAMBA ON OXYGEN UPTAKE AND CELL MEMBRANE PERMEABILITY IN LEAF TISSUE OF CYPERUS ROTUNDUS L.
- Authors
Magalhães, A. C.; Ashton, F. M.
- Abstract
The effect of the herbicidal compound dicamba (2-methoxy-3,6-dichlorobenzoic acid) on the rate of oxygen uptake and on cell membrane permeability of leaf tissues of purple nutsedge (<em>Cyperus rotundus</em> L.) was studied. Dicamba induced noticeable alterations in both the pattern of oxygen consumption and in permeability of the cells following spraying of the foliar parts of the plants. A pronounced decrease in respiratory rate was observed 5 days after treatment with 10-3 M dicamba, but the rate of oxygen uptake rose to approximately the level of the control 10 days after application of the herbicide. Permeability of the cell membranes decreased 5 days after treatment of the leaves with 10-2 M or 10-3 M dicamba. The results indicate that the early disruption of the cell membranes might be related to the mode of action of the herbicide.
- Subjects
HERBICIDES; PESTICIDES; WEED control; OXYGEN; CELL membranes; LEAVES; NUTGRASS
- Publication
Weed Research, 1969, Vol 9, Issue 1, p48
- ISSN
0043-1737
- Publication type
Article
- DOI
10.1111/j.1365-3180.1969.tb01448.x