Cao Duantao, Zhang Ying, Fu Xiaoxiang, Wang Feiyan, Wei Hongyi, Zhou Qinghong, Huang Yingjin, Peng Wenwen
The Laboratory for Phytochemistry and Botanical Pesticides, College of Agriculture, Jiangxi Agricultural University, Nanchang 330045, China.
College of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710061, China.
J Agric Food Chem. 2023 Apr 5;71(13):5127-5135. doi: 10.1021/acs.jafc.2c08802. Epub 2023 Mar 27.
Cyantraniliprole uptake, translocation, and distribution in wheat plants grown in hydroponics and soil conditions were investigated. The hydroponics experiment indicated that cyantraniliprole was prone to be absorbed by wheat roots mainly through the apoplastic pathway and predominately distributed in the cell-soluble fraction (81.4-83.6%) and ultimately transferred upward to leaves (TF = 4.84 > TF = 0.67). In wheat-soil systems, the uptake of cyantraniliprole was similar to that in hydroponics. The accumulation of cyantraniliprole in wheat tissues was mainly affected by the content of soil organic matter and clay, resulting in the increased adsorption of cyantraniliprole onto soils ( > 0.991, < 0.01), and was positively related to the concentration of cyantraniliprole in soil pore water ( > 0.991, < 0.001). Besides, the absorption of cyantraniliprole by wheat was predicted well by the partition-limited model. These results increased our understanding of the absorption and accumulation of cyantraniliprole in wheat and were also helpful for guiding the practical application and risk evaluation of cyantraniliprole.
研究了氰虫酰胺在水培和土壤条件下生长的小麦植株中的吸收、转运和分布情况。水培试验表明，氰虫酰胺易于被小麦根系吸收，主要通过质外体途径，且主要分布在细胞可溶部分（81.4 - 83.6%），最终向上转移至叶片（转运系数TF = 4.84 > TF = 0.67）。在小麦 - 土壤系统中，氰虫酰胺的吸收情况与水培条件下相似。氰虫酰胺在小麦组织中的积累主要受土壤有机质和黏土含量的影响，导致氰虫酰胺在土壤上的吸附增加（> 0.991，< 0.01），且与土壤孔隙水中氰虫酰胺的浓度呈正相关（> 0.991，< 0.001）。此外，分区限制模型能较好地预测小麦对氰虫酰胺的吸收。这些结果增进了我们对氰虫酰胺在小麦中吸收和积累的理解，也有助于指导氰虫酰胺的实际应用和风险评估。
