Uptake of Glyphosate by an Arthrobacter sp
AUTOR(ES)
Pipke, Rüdiger
RESUMO
The uptake of glyphosate (N-[phosphonomethyl]glycine) by an Arthrobacter sp. which can utilize this herbicide as its sole source of phosphorus was investigated. Orthophosphate suppressed the expression of the uptake system for glyphosate and also competed with glyphosate for uptake. The Km for glyphosate uptake was 125 μM, and the Ki for orthophosphate was 24 μM. Organophosphonates as well as organophosphates inhibited glyphosate uptake, but only organophosphates and orthophosphate suppressed the uptake system. Glyphosate uptake was energy dependent, had a pH optimum of 6 to 7, and was differentially affected by divalent cations.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=203797Documentos Relacionados
- Initial reactions of xanthone biodegradation by an Arthrobacter sp.
- Phosphate starvation induces uptake of glyphosate by Pseudomonas sp. strain PG2982.
- Degradation of a Sodium Acrylate Oligomer by an Arthrobacter sp
- Mechanism of Nitrification by Arthrobacter sp
- Degradation of the Phosphonate Herbicide Glyphosate by Arthrobacter atrocyaneus ATCC 13752