Characterization of the First Enzyme in 2,4-Dichlorophenoxyacetic Acid Metabolism
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چکیده
منابع مشابه
Characterization of the first enzyme in 2,4-dichlorophenoxyacetic acid metabolism.
This paper reviews the properties of the Alcaligenes eutrophus JMP134 tfdA gene product, the enzyme responsible for the first step in 2,4-dichlorophenoxyacetic acid (2,4-D) biodegradation. The gene was overexpressed in Escherichia coli and several of its enzymatic properties were characterized. Although this enzyme catalyzes a hydroxylation reaction, it is not a monooxygenase. Rather, TfdA is a...
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Three 2,4-dichlorophenoxyacetic acid (2,4-D) -resistant root callus tissue lines of Glycine max L. Merrill var. Acme were derived by culturing callus tissue 2 to 6 months on 40 milligrams per liter 2,4-D and designated 40R, 40B, and 40C. Tissue line 40R had a lower level of 2,4-D uptake in 2-week-old tissue which disappeared in 3.5-week-old tissue and less free 2,4-D following incubation for 24...
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Metabolism of 2,4-Dichlorophenoxyacetic Acid. III. Metabolism and Persistence in Dormant Plant Tissue.
In contrast to actively growing, susceptible plants which usually respond very promptly to applied 2,4dichlorophenoxyacetic acid (2,4-D), certain perennials that have been treated toward the end of a growing season may not exhibit morphological responses until the following season (9, 10, 12, 13). It has been a moot question whether (a) such delayed responses are initiated in sensitive cells of...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 1995
ISSN: 0091-6765
DOI: 10.2307/3432476