Delivery of acetamiprid to tea leaves enabled by porous silica nanoparticles: efficiency, distribution and metabolism of acetamiprid in tea plants

BMC Plant Biology

Wei Song¹  Yu Xiao¹  Zi Gu²  Jie Zhou³  Wanjun Gao⁴  Xinyi Wang⁴  Chuanjian Cui⁴  Ruyan Hou⁴  Min Yan⁴  Jing Zhu⁴  Fei Ke⁴ 

[1] Hefei Customs District Technical Center, Safety, Anhui Key Lab of Analysis and Detection for Food, 230022, Hefei, China;School of Chemical Engineering, The University of New South Wales, 2052 NSW, Sydney, Australia;School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, 200240, Shanghai, China;State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, 230036, Hefei, China;

关键词: Porous silica nanoparticles;    Acetamiprid;    Biological activity;    Tea plant;    Distribution and metabolism;   

DOI  :  10.1186/s12870-021-03120-4

来源: Springer

【 摘 要 】

BackgroundPesticide residue and its poor utilization remains problematic in agricultural development. To address the issue, a nano-pesticide has been developed by incorporating pesticide acetamiprid in porous silica nanoparticles.ResultsThis nano-pesticide had an acetamiprid loading content of 354.01 mg g−1. Testing LC50 value against tea aphids of the commercial preparation was three times that of the nano-pesticide. In tea seedlings (Camellia sinensis L.), acetamiprid was transported upward from the stem to the young leaves. On day 30, the average retained concentrations in tea leaves treated with the commercial preparation were about 1.3 times of that in the nano-pesticide preparation. The residual concentrations of dimethyl-acetamiprid in leaves for plants treated with the commercial preparation were about 1.1 times of that in the nano-pesticide preparation. Untargeted metabolomics of by LC–MS on the young leaves of tea seedlings under nano-pesticide and commercial pesticide treatments showed significant numbers of differentially expressed metabolites (P < 0.05 and VIP > 1). Between the nano-pesticide treatment group and the commercial preparation treatment group there were 196 differentially expressed metabolites 2 h after treatment, 200 (7th day), 207 (21st day), and 201 (30th day) in negative ion mode, and 294 (2nd h), 356 (7th day), and 286 (30th day) in positive ion mode. Preliminary identification showed that the major differentially expressed metabolites were glutamic acid, salicylic acid, p-coumaric acid, ribonic acid, glutamine, naringenin diglucoside, sanguiin H4, PG (34:2) and epiafzelechin.ConclusionsThis work demonstrated that our nano-pesticide outperformed the conventional pesticide acetamiprid in terms of insecticidal activity and pesticide residue, and the absorption, transportation and metabolism of nano-pesticide in tea plant were different, which pave a new pathway for pest control in agricultural sector.Graphical abstract

【 授权许可】

CC BY