scholarly journals Penetration of Soybean Root Systems by Abscisic Acid Isomers

1982 ◽  
Vol 69 (6) ◽  
pp. 1350-1352 ◽  
Author(s):  
Albert H. Markhart
Keyword(s):  
Abscisic Acid ◽  
Root Systems ◽  
Soybean Root

A biochemical study of BAS 517 using excised corn and soybean root systems

Weed Science ◽  
1999 ◽  
Vol 47 (1) ◽  
pp. 28-36
Author(s):  
Hwei-Yiing Li ◽  
Chester L. Foy
Keyword(s):  
Root System ◽  
Biochemical Study ◽  
Lipid Fraction ◽  
Root Systems ◽  
Water Soluble ◽  
Root Tips ◽  
Soybean Root ◽  
Corn Roots ◽  
Tracer Techniques ◽  
High Degree

The mode of action of BAS 517 in a susceptible plant species, corn, was investigated using an excised root system and14C-tracer techniques. The root system of a tolerant species, soybean, was used for comparison. When UL-14C- glucose was used as a precursor,14C incorporation into lipids was reduced in BAS 517-treated corn roots, although14C incorporation from UL-14C-glucose into lipids was relatively low. Inhibition of14C incorporation into water-soluble compounds was not definite because of a high degree of variability. Using14C-acetate as a precursor, 49, 43, and 34% of the recovered radioactivity was found in the lipid fractions of root tips treated with 0, 1.0, and 10 μM BAS 517, respectively. In nontreated soybean root tips, 47% of the recovered radioactivity was found in the lipid fraction compared to 49% in root tips treated with 10 μM BAS 517. Further analysis of lipids showed that BAS 517 inhibited the incorporation of14C from14C-acetate into phosphatidylethanolamine, a phospholipid, whereas the labeling of sterols in treated corn roots was not adversely affected. Acetyl CoA carboxylase extracted from root systems of corn and soybean showed different sensitivity to BAS 517, suggesting its role as the herbicide target site and as a basis for the selectivity.

scholarly journals Abscisic Acid Transport Coefficients of Phaseolus Root Systems

1982 ◽  
Vol 69 (6) ◽  
pp. 1353-1355 ◽  
Author(s):  
Edwin L. Fiscus ◽  
Frank R. Stermitz ◽  
Luis G. Amoros
Keyword(s):  
Abscisic Acid ◽  
Transport Coefficients ◽  
Root Systems ◽  
Acid Transport ◽  
Abscisic Acid Transport
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