3,4-Dichloroaniline is detoxified and exported via different pathways in Arabidopsis and soybean
摘要:
The metabolic fate of [UL-C-14]-3,4-dichloroaniline (DCA) was investigated in Arabidopsis root cultures and soybean plants over a 48 h period following treatment via the root media. DCA was rapidly taken up by both species and metabolised, predominantly to N-malonyl-DCA in soybean and N-glucosyl-DCA in Arabidopsis. Synthesis occurred in the roots and the respective conjugates were largely exported into the culture medium, a smaller proportion being retained within the plant tissue. Once conjugated, the DCA metabolites in the medium were not then readily taken up by roots of either species. The difference in the routes of DCA detoxification in the two plants could be explained partly by the relative activities of the respective conjugating enzymes, soybean containing high DCA-N-malonyltransferase activity, while in Arabidopsis DCA-N-glucosyltransferase activity predominated. A pre-treatment of plants with DCA increased DCA-N-malonyltransferase activity in soybean but not in Arabidopsis, indicating differential regulation of this enzyme in the two plant species. This study demonstrates that DCA can undergo two distinct detoxification mechanisms which both lead to the export of conjugated, metabolites from roots into the surrounding medium in contrast to the vacuolar deposition more commonly associated with the metabolism of xenobiotics in plants. (C) 2003 Elsevier Ltd. All rights reserved.
Buffered microencapsulated compositions and methods
申请人:Latta Mark A.
公开号:US10434044B2
公开(公告)日:2019-10-08
A microcapsule composition comprising at least one polymer substantially disposed as a semi-permeable shell around a buffered solution and at least one therapeutic agent, wherein the therapeutic agent permeates the shell, and wherein the composition is suitable for delivery to a mammal. This invention also provides related compositions, products and methods.
BUFFERED MICROENCAPSULATED COMPOSITIONS AND METHODS
申请人:Premier Dental Products Company
公开号:EP3765036A1
公开(公告)日:2021-01-20
US9814657B2
申请人:——
公开号:US9814657B2
公开(公告)日:2017-11-14
[EN] BUFFERED MICROENCAPSULATED COMPOSITIONS AND METHODS<br/>[FR] COMPOSITIONS MICROENCAPSULÉES TAMPONNÉES ET MÉTHODES ASSOCIÉES
申请人:PREMIER DENTAL PRODUCTS CO
公开号:WO2019177927A1
公开(公告)日:2019-09-19
A microcapsule composition comprising at least one polymer substantially disposed as a semi-permeable shell around an aqueous buffered solution and at least one agent, wherein the agent permeates the shell, and wherein the composition is suitable for delivery to a mammal. This invention also provides related compositions, products and methods.