Distribution and Effects of 2,4,5-Trichlorophenoxyacetic Acid

Distribution and effects of 2,4,5-trichlorophenoxyacetic acid in cells of Bacillus megaterium.

Cell death in a resting population of an asporogenous Bacillus megaterium was accelerated by ambient concentrations of 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) equal to or greater than 10 mug/ml or 5 mug/mg of cells (dry weight), but only after prolonged exposure. Conversely, populations of growing cells were not markedly influenced even at 100 mug/ml. Effects on cell respiration were not ma...

Some factors regulating auxin translocation in intact bean seedlings.

Several factors which influence the translocation patterns of stem-injected indoleacetic acid, 2,4-dichlorophenoxyacetic acid, and 2,4,5-trichlorophenoxyacetic acid in bean seedlings (Phaseolus vulgaris L. cv. Stringless Greenpod) were characterized. The acropetal translocation of auxin from the site of injection is markedly sensitive to concentration in the range of 1.0 to 5.0 micrograms per p...

Difficulty of evaluating the toxicity and teratogenicity of 2,4,5-T from existing animal experiments.

A question has been raised whether the herbicide 2,4,5-T (2,4,5-trichlorophenoxyacetic acid) is toxic and teratogenic to an extent that would forbid its further unrestricted use, at least in this country. For a while there was the hope that the question of 2,4,5-T's toxicity could be resolved by recourse to experimentation and observation. The existing evidence was reviewed, new experiments

Cytogenetic effects of 2,4,5-T on in vivo bone marrow cells of Mongolian gerbils.

Pure Culture of Pseudomonas cepacia

A pure culture of Pseudomonas cepacia, designated AC1100, that can utilize 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) as its sole source of carbon and energy was isolated. An actively growing culture of AC1100 was able to degrade more than 97% of 2,4,5-T, present at 1 mg/ml, within 6 days as determined by chloride release, gas chromatographic, and spectrophotometric analyses. The ability of AC...