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|metadata.artigo.dc.title:||Effects of arsenate, chromate, and sulfate on arsenic and chromium uptake and translocation by arsenic hyperaccumulator Pteris vittata L.|
|metadata.artigo.dc.creator:||Oliveira, Letúzia Maria de|
Ma, Lena Qiying
Santos, Jorge Antonio Gonzaga
Guilherme, Luiz Roberto Guimarães
Lessl, Jason Thomas
|metadata.artigo.dc.identifier.citation:||OLIVEIRA, L. M. de et al. Effects of arsenate, chromate, and sulfate on arsenic and chromium uptake and translocation by arsenic hyperaccumulator Pteris vittata L. Environmental Pollution, [S. I.], v. 184, p. 187-192, Jan. 2014.|
|metadata.artigo.dc.description.abstract:||We investigated effects of arsenate (AsV), chromate (CrVI) and sulfate on As and Cr uptake and translocation by arsenic hyperaccumulator Pteris vittata (PV), which was exposed to AsV, CrVI and sulfate at 0, 0.05, 0.25 or 1.25 mM for 2-wk in hydroponic system. PV was effective in accumulating large amounts of As (4598 and 1160 mg/kg in the fronds and roots at 0.05 mM AsV) and Cr (234 and 12,630 mg/kg in the fronds and roots at 0.05 mM CrVI). However, when co-present, AsV and CrVI acted as inhibitors, negatively impacting their accumulation in PV. Arsenic accumulation in the fronds was reduced by 92% and Cr by 26%, indicating reduced As and Cr translocation. However, addition of sulfate increased uptake and translocation of As by 26–28% and Cr by 1.63 fold. This experiment demonstrated that As and Cr inhibited each other in uptake and translocation by PV but sulfate enhanced As and Cr uptake and translocation by PV.|
|Appears in Collections:||DCS - Artigos publicados em periódicos|
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