首页|Understanding phytotoxicity of fosthiazate on crop seedlings through uptake kinetics, ROS burst and chloroplast metabolism

Understanding phytotoxicity of fosthiazate on crop seedlings through uptake kinetics, ROS burst and chloroplast metabolism

扫码查看
原文链接
  • NETL
  • NSTL
As a crucial management strategy for crop diseases, pests and weeds, the use of pesticides can also have someadverse effects on plant health. Understanding the specific mechanisms is essential for developing effectivemitigation measure. However, most studies on phytotoxicity mechanism have focused on ionic balance andbiochemical responses, with little consideration given to pesticide distributions within plants. Herein, symptomsand the underlying mechanisms of fosthiazate phytotoxicity to crops represented by tomatoes were investigated.Necrotic leaf edge and the root inhibition of tomato seedlings was observed after fosthiazate soil applied at themaximum registered dose. Given its high hydrophilicity, fosthiazate dissolved in soil solution was readilyabsorbed by plant roots and efficiently translocated upward via the transpiration stream, leading to varyingconcentrations across different organs and thus differential phytotoxicity. As fosthiazate accumulates, it inducedplasmolysis, triggered reactive oxygen species (ROS) bursts, and disrupted photosynthesis, resulting in leafwilting and necrotic. The interference of sucrose synthesis, transport and metabolism further inhibited root growth. Fosthiazate-loaded microcapsules could alleviate its phytotoxicity by slowing down the release rate. Our findings provided an important basis for the improvement of pesticide application safety and guiding the development of chemicals targets at specific organisms.

PhytotoxicityHigh hydrophilicityUptake kineticsPhotosynthateMitigation measure

Jiamei Zhu、Min Jiang、Wen Sun、Xiaochi Liu、Wenjian Dou、Yujie Gao、Tao Zhang、Jianfeng Tang、Wei Mu、Nan Zou、Feng Liu

展开 >

College of Plant Protection, Shandong Agricultural University, 61 Daizong Street, Tai’an, Shandong 271018, China

Shandong United Pesticide Industry Co., Ltd., Shengli Road, Tai’an, Shandong 271033, China

College of Plant Protection, Shandong Agricultural University, 61 Daizong Street, Tai’an, Shandong 271018, China||Research Center of Pesticide Environmental Toxicology, College of Plant Protection, Shandong Agricultural University, 61 Daizong Street, Tai’an, Shandong 271018,China

2025

10.1016/j.jhazmat.2025.138010

Journal of hazardous materials

Journal of hazardous materials

SCI
ISSN：0304-3894
年,卷(期)：2025.492(Jul.15)