1 research outputs found
Uptake, Translocation, Metabolism, and Distribution of Glyphosate in Nontarget Tea Plant (<i>Camellia sinensis</i> L.)
The uptake, translocation, metabolism,
and distribution behavior
of glyphosate in nontarget tea plant were investigated. The negative
effects appeared to grown tea saplings when the nutrient solution
contained glyphosate above 200 mg L<sup>–1</sup>. Glyphosate
was highest in the roots of the tea plant, where it was also metabolized
to aminomethyl phosphonic acid (AMPA). The glyphosate and AMPA in
the roots were transported through the xylem or phloem to the stems
and leaves. The amount of AMPA in the entire tea plant was less than
6.0% of the amount of glyphosate. The glyphosate level in fresh tea
shoots was less than that in mature leaves at each day. These results
indicated that free glyphosate in the soil can be continuously absorbed
by, metabolized in, and transported from the roots of the tea tree
into edible leaves, and therefore, free glyphosate residues in the
soil should be controlled to produce teas free of glyphosate