Toxicity of arsenate in Silene vulgaris, accumulation and degradation of arsenate-induced phytochelatins.

F.E.C. Sneller, L.M. van Heerwaarden, F.J.L. Kraaijeveld-Smit, W.M. ten Bookum, P.L.M. Koevoets, H. Schat, J.A.C. Verkley

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

The results presented in this paper describe the short- and long-term toxicity of arsenate in Silene vulgaris. Short-term toxicity, measured as inhibition of root elongation, depended on phosphate nutrition, arsenate being much less toxic at high phosphate supply. At low phosphate levels more arsenic was taken up by the plants. Under chronic exposure, toxicity (measured as inhibition of biomass production) did not increase with time. In addition, the accumulation of phytochelatins (PCs) as a function of toxicity and duration of exposure was studied. Short-term PC accumulation (over a 3 d period) was positively correlated with exposure. Isolation of peptide complexes from prolongedly exposed plants showed that PC
Original languageEnglish
Pages (from-to)223-232
JournalNew Phytologist
Volume144
DOIs
Publication statusPublished - 1999

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