Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1021/es060338e
Titel (primär) On the mode of action of N-phenyl-2-naphthylamine in plants
Autor Altenburger, R.; Brack, W.; Greco, W.R.; Grote, M.; Jung, K.; Ovari, A.; Riedl, J.; Schwab, K.; Küster, E. ORCID logo
Quelle Environmental Science & Technology
Erscheinungsjahr 2006
Band/Volume 40
Heft 19
Seite von 6163
Seite bis 6169
Sprache englisch
Abstract N-phenyl-2-naphthylamine, a sediment contaminant previously identified as a major toxicant of site-specific importance was investigated for its mode of toxic action. From short-term bioassays with daphnids, fish eggs, bacteria, and algae it appears that this compound has specific phytotoxic properties at concentrations below 100 mu g/L, which cannot be explained assuming an unspecific narcosis type of action in plants. Also, hydroxy-, nitro-, and methyl-derivatives show clear excess toxicity as compared to baseline toxic effects. Of several plant-specific growth and development processes investigated, only photosynthesis could be demonstrated to be affected at short exposure times and low concentrations. Disturbance of primary photosynthetic reactions such as oxygen evolution and fluorescence quenching, however, becomes only apparent after 2-3 h of exposure, which is in sharp contrast to known specific inhibitors targeting processes such as electron transport or ATP production. This, and concentration-time-effect modeling lead to the suggestion that N-phenyl-2-naphthylamine acts intracellular as a reactive compound in cell membranes producing irreversible, and thus cumulative, damage over time in algae. The effects may become first apparent in membrane-rich compartments such as the algal chloroplast
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Altenburger, R., Brack, W., Greco, W.R., Grote, M., Jung, K., Ovari, A., Riedl, J., Schwab, K., Küster, E. (2006):
On the mode of action of N-phenyl-2-naphthylamine in plants
Environ. Sci. Technol. 40 (19), 6163 - 6169 10.1021/es060338e