Summary
2,4-Dihydroxy-7-methoxy-1,4-benzoxazin-3-one (III), isolated from corn sap, detoxifies the herbicide Simazine, 2-chloro-4,6-bis-ethylamino-s-triazine,in vitro. 2,4-Dihydroxy-1,4-benzoxazin-3-one and the corresponding natural precursors of it and of (III), glucosides, behave in the same manner. It is very likely, therefore, that these glucosides and aglucones play a role in the resistance phenomena of some plant species against Simazine and related phytotoxic compounds. 6-Methoxybenzoxazolone and benzoxazolone, derived from the abovementioned benzoxazinones by heating, do not interfere with Simazine.
References
A. Gast, E. Knüsli undH. Gysin, Exper.12, 146 (1956).
W. Roth, C. R. Acad. Sci.245, 942 (1957).
M. Montgomery undV. H. Freed, Res. Prog. Report, Western Weed Control Conference, p. 93 (1959).
M. T. H. Ragab undJ. P. Mc Collum, Weeds9, 72 (1961).
W. Roth,Recherches sur l'action sélective de substances herbicides du groupe des triazines, Thèse Université de Strasbourg (1958), im Druck.
Wir danken dem Analytischen Laboratorium der J. R. Geigy AG. für die Ausführung dieser Bestimmungen.
A. I. Virtanen undP. K. Hietala, Acta chem. scand.9, 1543 (1955).
A. I. Virtanen, P. K. Hietala undO. Wahlroos, Suomen Kemist.B 29, 143 (1956).
O. Wahlroos undA. I. Virtanen, Acta chem. scand.13, 1906 (1959).
A. I. Virtanen undP. K. Hietala, Acta chem. scand.14, 499 (1960).
P. K. Hietala undA. I. Virtanen, Acta chem. scand.14, 502 (1960).
E. Honkanen undA. I. Virtanen, Acta chem. scand.14, 504 (1960).
A. I. Virtanen, Angew. Chemie70, 544 (1958).
Wir sind Herrn Prof.A. I. Virtanen für die freundliche Überlassung von Mustern dieser Substanzen zu grossem Dank verpflichtet.
D. E. Davis, H. H. Funderburk, jr., undN. G. Sansing, Weeds7, 300 (1959).
T. J. Sheets, Weeds9, 1 (1961).
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Roth, W., Knüsli, E. Beitrag zur Kenntnis der Resistenzphänomene einzelner Pflanzen gegenüber dem phytotoxischen Wirkstoff Simazin. Experientia 17, 312–313 (1961). https://doi.org/10.1007/BF02158173
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DOI: https://doi.org/10.1007/BF02158173