Metabolism of 2,4-dichlorophenoxyacetic acid in cell suspension cultures of soybean (Glycine max L.) and wheat (Triticum aestivum L.)

Planta ◽  
1981 ◽  
Vol 152 (3) ◽  
pp. 248-252 ◽  
Author(s):  
Dierk Scheel ◽  
Heinrich Sandermann
Keyword(s):  
Triticum Aestivum ◽  
Glycine Max ◽  
Cell Suspension ◽  
Cell Suspension Cultures ◽  
Triticum Aestivum L ◽  
Suspension Cultures ◽  
Dichlorophenoxyacetic Acid ◽  
Glycine Max L ◽  
2,4 Dichlorophenoxyacetic Acid

Uptake, Translocation, and Metabolism of 3,4-Dichloroaniline in Soybean and Wheat Plants

1994 ◽  
Vol 49 (11-12) ◽  
pp. 719-726 ◽  
Author(s):  
Margret Bockers ◽  
Christiane Rivero ◽  
Brigitte Thiede ◽  
Thomas Jankowski ◽  
Burkhard Schmidt
Keyword(s):  
Triticum Aestivum ◽  
Glycine Max ◽  
Cell Suspension ◽  
Cell Suspension Cultures ◽  
Triticum Aestivum L ◽  
Suspension Cultures ◽  
Main Metabolite ◽  
Wheat Roots ◽  
Glycine Max L ◽  
Soybean Plants

The roots of 13-day-old soybean ( Glycine max L.) and 7-day-old wheat ( Triticum aestivum L.) hydroponic plants were exposed to [14C]-3,4-dichloroaniline (1.0 and 0.4 mg/1 (6.2 and 2.5 μᴍ) , respectively) and harvested after 48/120 h (soybean) and 72 h (wheat). Both species metabolized the xenobiotic almost quantitatively to N-(β-D-glucopyranosyl)-3,4-dichloroaniline, N-malonyl-3,4-dichloroaniline, 6′-O-malonyl-N-(β-D-glucopyranosyl)-3,4-dichloroaniline and non-extractable residues. In the soybean experiments 58.8 (48 h) and 54.6% (120 h) of the applied radioactivity were found in the nutrient; this fraction consisted primarily of N-malonyl-3,4-dichloroaniline. 37.3/24.1% (48/120 h) were detected in the plants. In the soybeans, 36.2 and 52.7% (48/120 h) of the absorbed 14C were translocated, mainly into hypocotyls, primary and secondary leaves. After 120 h, the main metabolite was N-malonyl- 3,4-dichloroaniline (38.5% ); considerable levels of this metabolite accumulated in the primary and secondary leaves (10.4 and 10.4%). The glucosides were mainly found in the roots of the soybean plants. Totals of 23.5 and 35.1% (48/120 h) were transformed to non-extractable residues. In wheat, 78.3% of the applied 3,4-dichloroaniline was absorbed after 72 h. This fraction was partially translocated to the leaves, but most of the residues remained in the roots (90.3% of absorbed 14C). In wheat, a total of 45.6% was transformed to nonextractable residues. The soluble radioactivity in the roots consisted of nearly equal amounts of the glucosides and the N-malonyl conjugate. The processes observed in soybean and wheat roots resembled those of the respective cell suspension cultures published previously.

scholarly journals Effects of Plant Growth Regulators and Sugars on Ehretia asperula Zoll. et Mor. Cell Cultures

2021 ◽  
Author(s):  
P.T.M. Tram ◽  
N.K. Suong ◽  
L.T.T. Tien
Keyword(s):  
Cell Suspension ◽  
Callus Induction ◽  
Malignant Tumors ◽  
Single Cells ◽  
Cell Suspension Cultures ◽  
Suspension Cultures ◽  
Dichlorophenoxyacetic Acid ◽  
Human Immune System ◽  
Friable Callus ◽  
2,4 Dichlorophenoxyacetic Acid

Background: Belonging to the Boraginacae family, Ehretia asperula Zoll. et Mor., called “Xa den”, is a precious medicinal plant also known as the “cancer tree” by the Muong ethnic group in Hoa Binh Province, Vietnam. Xa den has been demonstrated to inhibit the development of malignant tumors, reduce oxidation and enhance the human immune system. This research focused on examining friable callus induction from young stems of Ehretia asperula Zoll. et Mor. Methods: Samples of Xa den were less than two years old. Young stems with 2 to 6 leaves served as explants for callus induction. Explants placed on autoclaved B5 nutrients incubated at 25oC, in the dark. The testing factors were concentrations of 2,4-Dichlorophenoxyacetic acid (2,4-D) and Benzyl adenine (BA), types and concentrations of sugars.Result: Friable callus was induced on B5 medium with 0.4 mg/L of 2,4-D, 0.1 mg/L of BA and 30 g/L of glucose at the highest rate (100%). Additionally, callus grew best after 5 weeks of culture weighing 0.194 g. Friable callus was used as material for cell suspension cultures. After two weeks, the Xa den cell suspension cultures contained single cells and small cell clumps. The liquid medium had changed from dark yellow to light brown.

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