Studies on Plant Growth-regulating Activities of Anisomycin and Toyocamycin

Natural Phytotoxins as Herbicides

“…The antibiotic activity of the herbicidally active compound homoalanosine, produced by Streptomyces galUaeus, could be reversed by aspartate or glutamate (83) Phytotoxins from non-pathogenic microbes make up a large proportion of the patented herbicides of microbial origins, many of which have unknown mechanisms of action. Examples of these compounds are toyocamycin, anisomycin and several close analogues, herbimycins, herbicidins, hydantocidin, gelanamycin, nigiricin, and a-methylene-/3-alanine (84)(85)(86)(87)(88)(89)(90)(91)(92). These and many others are discussed in more extensive reviews (e.g., 1,10,19).…”

A Simple Bioassay for Herbicidal Substances of Microbial Origin by Determiningde novoStarch Synthesis in Leaf Segments

“…Applying this herbicide assay system, we expected to find new herbicides of the following types: (1) inhibitors of the photosynthesis electron transport system, (2) agents specifically inhibiting carbon dioxide fixation in both C 3 and C 4 plants, (3) agents specifically inhibiting carbon dioxide fixation in C 4 plants only, and (4) agents inhibiting starch synthesis as a secondary effect without direct influence on oxygen evolution. Although type (3) herbicides have not been found yet, Matsunaka et aU 5 ) proposed that a specific inhibitor of pyruvate phosphate dikinase might be a selective herbicide between C 3 and C4 plants.…”

Plant Growth-regulating Activities of 4-Methoxydiphenylmethanes and Their Related Compounds

“…1). The present paper describes studies of the plant growthregulating activities of p-methoxydiphenylmethanes and their related compounds (Xmethylene in [1]). …”