MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, Tianjin, MARA 300191, China.
Environ Sci Technol. 2024 Sep 17;58(37):16282-16290. doi: 10.1021/acs.est.4c04379. Epub 2024 Sep 5.
To assess the ecological risk of microplastics (MPs) in agricultural systems, it is critical to simultaneously focus on MP-mediated single-organism response and different trophic-level organism interaction. Herein, we placed earthworms in soils contaminated with different concentrations (0.02% and 0.2% w/w) of polyethylene (PE) and polypropylene (PP) MPs to investigate the effect of earthworms on tomato against () under MPs stress. We found that earthworms alleviated the inhibitory effects of MPs stress on tomato growth and disrupted growth. Compared to individual MPs exposure, earthworm incorporation significantly increased the silicon and lignin content in herbivore-damaged tomato leaves by 19.1% and 57.6%, respectively. Metabolites involved in chemical defense (chlorogenic acid) and phytohormones (jasmonic acid) were also activated by earthworm incorporation. Furthermore, earthworms effectively reduced oxidative damage induced by via promoting antioxidant metabolism. Overall, our results suggest that utilizing earthworms to regulate above- and below-ground interactions could be a promising strategy for promoting green agriculture.
为了评估农业系统中微塑料（MPs）的生态风险，关键是要同时关注 MP 介导的单一生物反应和不同营养级生物的相互作用。在此，我们将蚯蚓置于受不同浓度（0.02%和 0.2%w/w）聚乙烯（PE）和聚丙烯（PP） MPs 污染的土壤中，以研究蚯蚓对番茄在 MPs 胁迫下对（）的影响。我们发现，蚯蚓缓解了 MPs 胁迫对番茄生长的抑制作用，并破坏了的生长。与单独暴露于 MPs 相比，蚯蚓的掺入显著增加了草食性动物损伤的番茄叶片中硅和木质素的含量，分别增加了 19.1%和 57.6%。参与化学防御的代谢物（绿原酸）和植物激素（茉莉酸）也被蚯蚓的掺入所激活。此外，蚯蚓通过促进抗氧化代谢有效地减轻了诱导的氧化损伤。总的来说，我们的结果表明，利用蚯蚓来调节地上和地下相互作用可能是促进绿色农业的一种有前途的策略。
