Evaluation of the bioaccumulation of heavy metals and 137Cs in succulent plants Echeveria elegans

Ortiz-Oliveros, Huemantzin Balan; Cruz, D. O. A.; Flores-Espinosa, R. M.; Santillán-Malaquías, I.; Zarazúa-Ortega, G.; Villalva, Alejandra S.

doi:10.1007/s13762-021-03186-5

Cited by 6 publications

(1 citation statement)

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“…These factors are calculated by similar equations however differ by considering either only the dissolved phase or both the dissolved and particulate phases of a contaminant in the environment [46]. In addition, root and shoot accumulation factors, as well as translocation factors, are used for distinguishing metal localization in the plant [47].…”

Section: Discussionmentioning

confidence: 99%

Caesium-133 Accumulation by Freshwater Macrophytes: Partitioning of Translocated Ions and Enzyme Activity in Plants and Microorganisms

et al. 2022

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The potential of aquatic plants to accumulate Cs may be of notable importance in the environmental monitoring of radioactive wastes. This study aimed to evaluate the accumulation of Cs-133 by freshwater macrophytes Bacopa amplexicaulis, Elodea densa, Ceratophyllum submersum, and Limnobium laevigantum after a 10-day incubation period with CsCl (1–1000 μM). The partitioning of Cs and other elements, including 21 metals, such as P, B, and As, was analyzed using inductively coupled plasma mass spectrometry combined with principal component analysis (PCA). The enzymatic activity of plant crude extracts and aquatic microorganisms was characterized. The transfer factor (TF) reached the highest values of 0.13 and 0.10 for C. submersum and L. laevigantum, respectively, at 1000 μM Cs. The TFs in the other sets were below 0.1. In the presence of Cs-133, there was a significant increase in dehydrogenase activity (p < 0.05) and a decrease in the activity of the Folin–Ciocalteu assay. A three-fold decrease in culturable microorganisms was found in plants with 1000 μM Cs. PCA analysis revealed the species-specific elemental distribution in plant biomass and the aquatic phase. A negative correlation between Na, Ca (2.0–2.5, PC1) and Mg, K, and P (−2, PC1) was found. Certain enzyme groups can serve as bioindicators of Cs pollution in aquatic ecosystems.

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Section: Discussionmentioning

confidence: 99%