Toxic effect of triphenyltin onLemna polyrhiza

Abstract

Little data about toxic effect of triphenyltin (TPT) on aquatic plants is available. The purpose of this paper is to study the toxic effect of TPT on duckweed, Lemna polyrhiza, and the bioconcentration factor of TPT by Lemna polyrhiza. At 5 µg/l concentration TPT treatment, a toxic effect on growth of Lemna polyrhiza appeared. The 8 day IC 50 of TPT to Lemna polyrhiza was 19.22 µg/l. TPT stimulated peroxidase activity and nitrate reductase activity at 2 and 5 µg/l. TPT reduced chloroplast activity of Lemna polyrhiza at 2 and 5 µg/l. Bioconcentration factors of TPT for Lemna polyrhiza were 4.3 and 10.9 at 2 and 5 µg/l, respectively.

Speciation and Degradation of Triphenyltin in Typical Paddy Fields and Its Uptake into Rice Plants

“…Toxic effects of TPhT on plants are also not well studied or understood. However, TPhT seems to reduce chloroplast activity in aquatic plants, which further prejudices photosynthesis . However, in the present experiments, no visible effects could be observed on plants exposed to different TPhT concentrations.…”

“…However, TPhT seems to reduce chloroplast activity in aquatic plants, which further prejudices photosynthesis. 25 However, in the present experiments, no visible effects could be observed on plants exposed to different TPhT concentrations. Finally, it can be stated that phenyltin degradation is more complex than initially thought, and it is slow enough that plants exposed to this biocide can take up this compound and translocate it inside the plants.…”

Bioprospects of Coastal Eubacteria

“…This study showed that reproductive cells of algae were more sensitive than somatic cells (Rumampuk et al 2004). TPT had adverse effects on the freshwater plant Lemna polyrhiza, at concentrations of 2-5 µg L -1 (Song and Huang 2005). Due to the hydrophobicity of the PT molecules, it can easily solubilise in biological membranes and thus affect the organism.…”