草甘膦
山茶
韧皮部
开枪
木质部
氨基甲基膦酸
化学
植物
营养物
须根系统
生物
农学
有机化学
作者
Mengmeng Tong,Wanjun Gao,Weiting Jiao,Jie Zhou,Yeyun Li,Lili He,Ruyan Hou
标识
DOI:10.1021/acs.jafc.7b02474
摘要
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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