Action of Methylthiopyrimidine Experimental Herbicides as Diuron-Like Inhibitors of Photosynthesis
نویسنده
چکیده
Derivatives of 6-chloro-5-methylthiopyrimidines provide potent inhibitors of the photosynthe tic electron flow, which act like Diuron on fluorescence induction kinetics and competitively displace it from its binding site. Structure-activity relationships show that, unlike triazines, ac tivities of 2or 4-alkylamino derivatives are restricted by steric hindrances. Decreases in inhibit ory activities of these compounds observed in triazine-resistant chloroplasts are lower than de creases reported for triazines themselves.
منابع مشابه
Herbicides which Inhibit Electron Transport or Produce Chlorosis and Their Effect on Chloroplast Development in Radish Seedlings I. Chlorophyll a Fluorescence Transients and Photosystem II Activity
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