Abstract:Effects of diphenyl ether (DPE) and DPE-type herbicides on porphyrin biosynthesis in cucumber seedlings were studied by ion-pair HPLC. The results: (a) Acifluorfen-methyl (AFM) did not increase the protoporphyrin IX (Proto IX) content in either etiolated cotyledons or white hypocotyls in the presence of 2, 2-dipyridyl, which was synergetic with AFM in stimulating the accumulation of Proto IX in green cotyledons, although AFM has been reported to cause the accumulation of Proto IX by inhibiting protoporphyrinog… Show more
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