Growth and physiological responses of submerged macrophytes to linear alkylbenzene sulfonate (LAS).
Environ Toxicol Pharmacol
; 107: 104434, 2024 Apr.
Article
em En
| MEDLINE
| ID: mdl-38582069
ABSTRACT
The potential toxic effects of linear alkylbenzene sulfonate (LAS), widely used in commercial detergents and cleaners, on submerged macrophytes remain unclear. We conducted a two-week exposure experiment to investigate LAS toxicity on five submerged macrophytes (four native and one exotic), focusing on their growth and physiological responses. The results showed that lower concentrations of LAS (< 5â¯mg/L) slightly stimulated the growth of submerged macrophytes, while higher doses inhibited it. Increasing LAS concentration resulted in decreased chlorophyll content, increased MDA content and POD activity, and initially increased SOD and CAT activities before declining. Moreover, Elodea nuttallii required a higher effective concentration for growth compared to native macrophytes. These findings suggest that different species of submerged macrophytes exhibited specific responses to LAS, with high doses (exceeding 5 â¼ 10â¯mg/L) inhibited plant growth and physiology. However, LAS may promote the dominance of surfactant-tolerant exotic submerged macrophytes in polluted aquatic environments.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ácidos Alcanossulfônicos
/
Antioxidantes
Idioma:
En
Revista:
Environ Toxicol Pharmacol
/
Environ. toxicol. pharmacol
/
Environmental toxicology and pharmacology
Ano de publicação:
2024
Tipo de documento:
Article