Effects of phosphate on arsenate uptake and translocation in nonmetallicolous and metallicolous populations of Pteris Vittata L. under solution culture

Fuyong WU, Shengchun WU, Dan DENG, Ming Hung WONG

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Abstract

An arsenic hyperaccumulator, Pteris vittata L., is common in nature and could occur either on As-contaminated soils or on uncontaminated soils. However, it is not clear whether phosphate transporter play similar roles in As uptake and translocation in nonmetallicolous and metallicolous populations of P. vittata. Five populations were used to investigate effects of phosphate on arsenate uptake and translocation in the plants growing in 1.2 L 20% modified Hoagland's nutrient solution containing either 100 μM phosphate or no phosphate and 10 μM arsenate for 1, 2, 6, 12, 24 h, respectively. The results showed that the nonmetallicolous populations accumulated apparently more As in their fronds and roots than the metallicolous populations at both P supply levels. Phosphate significantly (P < 0.01) decreased frond and root concentrations of As during short time solution culture. In addition, the effects of phosphate on As translocation in P. vittata varied among different time-points during time-course hydroponics (1–24 h). The present results indicated that the inhibitory effect of phosphate on arsenate uptake was larger in the three nonmetallicolous populations than those in the two metallicolous populations of P. vittata. Copyright © 2015 Taylor & Francis.
Original languageEnglish
Pages (from-to)841-846
JournalInternational Journal of Phytoremediation
Volume17
Issue number9
Early online date17 Jun 2015
DOIs
Publication statusPublished - 2015

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Pteris vittata
arsenates
phosphates
fronds
hyperaccumulators
arsenic
hydroponics
polluted soils
nutrient solutions
transporters

Bibliographical note

Wu, F., Wu, S., Deng, D., Wong, M. H. (2015). Effects of Phosphate on Arsenate uptake and translocation in nonmetallicolous and metallicoulous populations of Pteris Vittata L. under solution culture. International Journal of Phytoremediation, 17(9), 841-846. doi: 10.1080/15226514.2014.964848.

Keywords

  • Chinese brake fern
  • Population variation
  • Phytoremediation
  • As-contaminated soils