College of Water Conservancy and Environment Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou, China; Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea.
State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, China.
Environ Int. 2019 Oct;131:105015. doi: 10.1016/j.envint.2019.105015. Epub 2019 Jul 29.
The accumulation of potentially toxic elements (PTEs) in aquatic ecosystems has become a global concern, as PTEs may exert a wide range of toxicological impacts on aquatic organisms. Submerged plants and the microorganisms attached to their surfaces, however, have displayed great potential as a means of coping with such pollution. Therefore, it is crucial to understand the transport pathways of PTEs across sediment and organisms as well as their accumulation mechanisms in the presence of submerged plants and their biofilms. The majority of previous studies have demonstrated that submerged plants and their biofilms are indicators of PTE pollution in the aquatic environment, yet relatively little is known about PTE accumulation in epiphytic biofilms. In this review, we describe the transport pathways of PTEs in the aquatic environment in order to offer remarkable insights into bioaccumulation mechanisms in submerged plants and their biofilms. Based on the literature cited in this review, the roles of epiphytic biofilms in bioaccumulation and as an indicator of ecosystem health are discussed.
水生生态系统中有毒元素（PTEs）的积累已成为全球性关注的问题，因为 PTEs 可能对水生生物产生广泛的毒理学影响。然而，沉水植物及其表面附着的微生物具有应对这种污染的巨大潜力。因此，了解 PTEs 在沉积物和生物体中的迁移途径以及在沉水植物及其生物膜存在下的积累机制至关重要。大多数先前的研究表明，沉水植物及其生物膜是水生环境中 PTE 污染的指标，但关于附生生物膜中 PTE 积累的知识相对较少。在这篇综述中，我们描述了水生环境中 PTEs 的迁移途径，以便深入了解沉水植物及其生物膜的生物积累机制。根据本综述中引用的文献，讨论了附生生物膜在生物积累中的作用及其作为生态系统健康指标的作用。
