Application of an Endophyte Enterobacter sp. TMX13 to Reduce Thiamethoxam Residues and Stress in Chinese Cabbage (Brassica chinensis L)

• DOI: 10.1021/acs.jafc.0c03523
• Publication Date: 2020-07-27T20:47:56Z
• Authors: Wenfeng Wang; Qun Wan; Yixin Li; Jing Ge; Fayun Feng; Xiangyang Yu
• Keywords: Endophyte; Malondialdehyde

A strain of thiamethoxam-degrading endophyte, named TMX13, was isolated from roots mulberry (Morus alba L.) and identified as Enterobacter sp. Inoculating Chinese cabbage (Brassica chinensis L) with TMX13-gfp (gfp-labeled TMX13) could significantly reduce thiamethoxam residues in the aboveground part (edible portion) vegetable. The theoretical daily intake (TDI) via consumption inoculated 0.17 μg/kg body weight per day, far less than prescribed acceptable (ADI) for this pesticide. colonization increase leaf chlorophyll content plant biomass promote development roots. Compared uninoculated treatment, contents malondialdehyde (MDA) hydrogen peroxide (H2O2) activity superoxide dismutase (SOD) leaves plants decreased by 18.4%–60.2%, suggesting that alleviate oxidative stress induced exposure. total amounts organic acids amino root exudates 9.2% 85.2%, respectively. Results study lead to conclusion endophyte TMX13 edible vegetables, growth, phytotoxic effects