Uptake, Translocation, Metabolism, and Distribution of Glyphosate in Nontarget Tea Plant
 
作者: 文章来源: 点击数: 更新日期:2017-11-02

Title


Uptake, Translocation, Metabolism, and Distribution of Glyphosate in Nontarget Tea Plant (Camellia sinensis L.)


Authors


Mengmeng Tong
, Wanjun Gao, Weiting Jiao, Jie Zhou, Yeyun Li, Lili He, Ruyan Hou*


Journal


DOI: 10.1021/acs.jafc.7b02474 J. Agric. Food Chem. 2017, 65, 7638−7646.


Abstract


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−1. 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.




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  • uptake, translocation, metabolism, and distribution of glyphosate in nontarget tea plant (camellia sinensis l.)(童蒙蒙,高万君,侯如燕,2017).pdf
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