Ecological Toxicity Effects of Artemisinin Algicidal (AMA) on Submerged Plant Vallisneria natans

• Published in: Bulletin of environmental contamination and toxicology Vol. 114; no. 3; p. 37
• Main Authors: Zhang, Yi, Shi, Jiahui, Ma, Yushen, Zhu, Chengjie, Shao, Chenxi, Ni, Lixiao, Li, Shiyin
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.03.2025; Springer Nature B.V
• Subjects: Algae; Algicides; antioxidant activity; Antioxidants; Aquatic Pollution; Artemisinin; Artemisinins - toxicity; Biomass; bulls; Catalase; Community structure; Cyanobacteria; Earth and Environmental Science; Ecological effects; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Enzymes; Herbicides; Hydrocharitaceae - drug effects; Leaves; malondialdehyde; microbial communities; Microbiomes; Microorganisms; Next-generation sequencing; Physiology; Pollution; Soil Science & Conservation; species diversity; submerged aquatic plants; Submerged plants; Superoxide dismutase; Superoxide Dismutase - metabolism; Toxicity; Toxicology; Vallisneria; Vallisneria natans; Waste Water Technology; Water Management; Water Pollutants, Chemical - toxicity; Water Pollution Control; Submerged plants; Artemisinin algaecide (AMA); Microbial community; Vallisneria natans (V. natans)
• ISSN: 0007-4861; 1432-0800; 1432-0800
• DOI: 10.1007/s00128-025-04017-w

Artemisinin algaecide (AMA) had a significant inhibitory effect on algae in our previous study, but the impact on coexisting submerged plants was unclear. In this study, we investigated the impacts of AMA with varying concentrations (1‰, 5‰ and 10‰) on the growth, antioxidant response and microbial community of Vallisneria natans ( V. natans ). The results revealed a significant reduction in biomass in V. natans upon exposure to AMA, indicating an inhibitory of V. natans . Furthermore, malondialdehyde (MDA) content increased significantly in three treatment groups, and catalase (CAT) increased significantly in the 10‰ treatment group, while superoxide dismutase (SOD) had little change in all groups, indicating complex antioxidant responses to AMA. Notably, the High-throughput sequencing results showed that AMA significantly altered microbial abundance and community structure of V. natans . Alpha diversity results indicated that AMA increased the diversity of the microbial community in V. natans , but it had little impact on the dominant bacterial phylum. These results provide necessary information to assess the potential ecotoxicity of AMA to submerged plants during algal suppression and draw more attention to their use in natural water bodies.