Toxicity of organotins towards cyanobacterial photosynthesis and nitrogen fixation

Simon V. Avery; Marvin E. Miller; Geoffrey M. Gadd; Geoffrey A. Codd; Joseph J. Cooney

doi:10.1111/j.1574-6968.1991.tb04597.x

Toxicity of organotins towards cyanobacterial photosynthesis and nitrogen fixation

Simon V. Avery, Marvin E. Miller, Geoffrey M. Gadd, Geoffrey A. Codd (Lead / Corresponding author), Joseph J. Cooney

University of Dundee

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Inhibition of photosynthesis by a range of organotin compounds in Plectonema boryanum was concentration-dependent and decreased in the order tributyltin (Bu₃SnCl) > tripropyltin (Pr₃SnCl) ≥ dibutyltin (Bu₂SnCl₂) ≥ triphenyltin (Ph₃SnCl) > triethyltin (Et₃SnCl) > trimethyltin (Me₃SnCl) > monobutyltin (BuSnCl₃). IC₅₀ values were determined for the most toxic organotin species and varied from approximately 1.2 μM for Bu₃SnCl to approximately 13 μM for Ph₃SnCl. A similar order of inhibition of photosynthesis was observed in Anabaena cylindrica, although here IC₅₀ values were slightly lower (e.g. approximately 1 μM for Bu₃SnCl and 5 μM for Ph₃SnCl).Nitrogenase activity was generally more sensitive to inhibition by organotin compounds than photosynthesis in A. cylindrica and this was particularlyy evident for Bu₂SnCl₂; approximate IC₅₀ values for Bu₂SnCl₂ were 3 and 9 μM, as estimated by nitrogenase activity and photosynthesis, respectively. These results indicate that organotin compounds have the potential to inhibit cyanobacterial metabolism in aquatic systems.

Original language	English
Pages (from-to)	205-210
Number of pages	6
Journal	FEMS Microbiology Letters
Volume	84
Issue number	2
DOIs	https://doi.org/10.1111/j.1574-6968.1991.tb04597.x
Publication status	Published - 1 Nov 1991

Keywords

Anabaena cylindrica
Cyanobacteria
Nitrogen fixation
Organotins
Photosynthesis
Plectonema boryanum
Toxicity

ASJC Scopus subject areas

Microbiology
Molecular Biology
Genetics

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title = "Toxicity of organotins towards cyanobacterial photosynthesis and nitrogen fixation",

abstract = "Inhibition of photosynthesis by a range of organotin compounds in Plectonema boryanum was concentration-dependent and decreased in the order tributyltin (Bu3SnCl) > tripropyltin (Pr3SnCl) ≥ dibutyltin (Bu2SnCl2) ≥ triphenyltin (Ph3SnCl) > triethyltin (Et3SnCl) > trimethyltin (Me3SnCl) > monobutyltin (BuSnCl3). IC50 values were determined for the most toxic organotin species and varied from approximately 1.2 μM for Bu3SnCl to approximately 13 μM for Ph3SnCl. A similar order of inhibition of photosynthesis was observed in Anabaena cylindrica, although here IC50 values were slightly lower (e.g. approximately 1 μM for Bu3SnCl and 5 μM for Ph3SnCl).Nitrogenase activity was generally more sensitive to inhibition by organotin compounds than photosynthesis in A. cylindrica and this was particularlyy evident for Bu2SnCl2; approximate IC50 values for Bu2SnCl2 were 3 and 9 μM, as estimated by nitrogenase activity and photosynthesis, respectively. These results indicate that organotin compounds have the potential to inhibit cyanobacterial metabolism in aquatic systems.",

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AU - Gadd, Geoffrey M.

AU - Codd, Geoffrey A.

AU - Cooney, Joseph J.

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N2 - Inhibition of photosynthesis by a range of organotin compounds in Plectonema boryanum was concentration-dependent and decreased in the order tributyltin (Bu3SnCl) > tripropyltin (Pr3SnCl) ≥ dibutyltin (Bu2SnCl2) ≥ triphenyltin (Ph3SnCl) > triethyltin (Et3SnCl) > trimethyltin (Me3SnCl) > monobutyltin (BuSnCl3). IC50 values were determined for the most toxic organotin species and varied from approximately 1.2 μM for Bu3SnCl to approximately 13 μM for Ph3SnCl. A similar order of inhibition of photosynthesis was observed in Anabaena cylindrica, although here IC50 values were slightly lower (e.g. approximately 1 μM for Bu3SnCl and 5 μM for Ph3SnCl).Nitrogenase activity was generally more sensitive to inhibition by organotin compounds than photosynthesis in A. cylindrica and this was particularlyy evident for Bu2SnCl2; approximate IC50 values for Bu2SnCl2 were 3 and 9 μM, as estimated by nitrogenase activity and photosynthesis, respectively. These results indicate that organotin compounds have the potential to inhibit cyanobacterial metabolism in aquatic systems.

AB - Inhibition of photosynthesis by a range of organotin compounds in Plectonema boryanum was concentration-dependent and decreased in the order tributyltin (Bu3SnCl) > tripropyltin (Pr3SnCl) ≥ dibutyltin (Bu2SnCl2) ≥ triphenyltin (Ph3SnCl) > triethyltin (Et3SnCl) > trimethyltin (Me3SnCl) > monobutyltin (BuSnCl3). IC50 values were determined for the most toxic organotin species and varied from approximately 1.2 μM for Bu3SnCl to approximately 13 μM for Ph3SnCl. A similar order of inhibition of photosynthesis was observed in Anabaena cylindrica, although here IC50 values were slightly lower (e.g. approximately 1 μM for Bu3SnCl and 5 μM for Ph3SnCl).Nitrogenase activity was generally more sensitive to inhibition by organotin compounds than photosynthesis in A. cylindrica and this was particularlyy evident for Bu2SnCl2; approximate IC50 values for Bu2SnCl2 were 3 and 9 μM, as estimated by nitrogenase activity and photosynthesis, respectively. These results indicate that organotin compounds have the potential to inhibit cyanobacterial metabolism in aquatic systems.

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Toxicity of organotins towards cyanobacterial photosynthesis and nitrogen fixation

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