Some Biological and Biochemical Activities of Resormycin, a Novel Herbicidal Antibiotic.
2010
Biological and biochemical activities of resormycin were studied using unicellular green algae, Selenastrum capricornutum (abbreviated as Selena.), as a test organism. Resormycin inhibited the growth in vitro of Selena. more strongly in the dark than in the light. A weaker but more photo-stable derivative, (+/-)-2,3-dihydro-resormycin, showed more long-lasting activity against Selena. in the light. Resormycin started killing Selena. only after exposure for 2 days and longer, even at high concentrations. Resormycin at concentrations near IC50 rapidly inhibited incorporation of 3H-leu, but not 3H-UR or 3H-TdR, into the TCA insoluble fraction of Selena. Herbicidal activity of resormycin was confirmed using some crops and weeds.
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