数字农科院2.0

Uptake and translocation of triadimefon by wheat (Triticum aestivum L.) grown in hydroponics and soil conditions

文献类型： 外文期刊

作者： Yu Sumei;Li Xin;He Shuhong;Zhang Hongchao;Jin Maojun;Zheng Yongquan;Zhang Luqing;Yu Yunlong

作者机构：

关键词： In situ pore water;Subcellular fractionation;Translocation;Triadimefon;Uptake

期刊名称： Journal of Hazardous Materials

ISSN： 0304-3894

年卷期： 2022 年 423 卷

页码：

收录情况： SCIE（2022版） ; EI（2022版）

摘要： Residual pesticides in soil may be taken in by plants and thus have a risk for plant growth and food safety. In this study, uptake of triadimefon and its subsequent translocation and accumulation were investigated with wheat as model plants. The results from hydroponics indicated that triadimefon was absorbed by wheat roots mainly through apoplastic pathway and predominantly distributed into the water soluble fractions (66.7−76.0%). After being uptaken by roots, triadimefon was easily translocated upward to wheat shoots and leaves. Interestingly, triadimefon in leaves was mainly distributed in the soluble fraction by 52.5% at the beginning, and gradually transferred into the cell wall by 47.2% at equilibrium. The uptake of triadimefon from soils by wheat plants was similar to that in hydroponics. Its accumulation were mainly governed by adsorption of the fungicide onto soils, and positively correlated with its concentration in in situ pore water (CIPW). Thus, CIPW can be suitable for predicting the uptake of triadimefon by wheat from soils. Accordingly, uptake of triadimefon by wheat was predicted well by using the partition-limited model. Our study provides valuable information for guiding the practical application and safety evaluation of triadimefon.

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