Uptake kinetics of different arsenic species in lowland and upland rice colonized with Glomus intraradices

H. LI, C. WU, Z. H. YE, S. C. WU, F. Y. WU, Ming Hung WONG

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22 Citations (Scopus)

Abstract

The effect of Glomus intraradices on four As species (arsenate; arsenite; dimethylarsinic acid, DMA; and monomethylarsonic acid, MMA) uptake by lowland rice and upland rice were investigated based on two experiments: (1) high (0-0.05 mM) and low (0-2.5 mM) - affinity uptake kinetics of four As species in the short-term, and (2) As speciation in rice treated with 1 mM arsenate, arsenite, DMA or MMA solutions. The results showed that mycorrhizal roots of two rice cultivars reduced the arsenate uptake significantly (P<0.001) in low-affinity uptake system, and decreased the uptake of arsenite and MMA noticeably (P<0.05) in high or low-affinity uptake systems. The four As species influx have significant differences (P<0.05) between two rice varieties in low-affinity uptake systems. In the arsenate treatment, the ratio of arsenate/arsenite reduced in shoots while increased in roots because of G. intraradices presence. Copyright © 2011 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)414-421
JournalJournal of Hazardous Materials
Volume194
DOIs
Publication statusPublished - 30 Oct 2011

Citation

Li, H., Wu, C., Ye, Z. H., Wu, S. C., Wu, F. Y., & Wong, M. H. (2011). Uptake kinetics of different arsenic species in lowland and upland rice colonized with Glomus intraradices. Journal of Hazardous Materials, 194, 414-421. doi: 10.1016/j.jhazmat.2011.08.004

Keywords

  • Arbuscular mycorrhizal fungi
  • Arsenic speciation
  • Rice
  • Uptake kinetic

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