Effects of mycorrhizal inoculation of upland rice on uptake kinetics of arsenate and arsenite

Fuyong WU, Xueping LIU, Shengchun WU, Ming Hung WONG

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3 Citations (Scopus)

Abstract

We assessed the effect of mycorrhizal inoculation on short‐term uptake kinetics of arsenate and arsenite by excised roots of upland rice (Oryza sativa L. cv. Zhonghan 221). A concentration of 0.01–0.05 mM arsenic (As) differentially affected the influx rates of both arsenate and arsenite into rice roots non‐inoculated or inoculated with Glomus mosseae and G. versiforme. While Vmax for arsenate uptake by non‐mycorrhizal roots was 1.02 µmol g⁻¹ fresh weight h⁻¹, it was reduced by a factor of 2.4 for mycorrhizal roots (about 0.42 µmol g⁻¹ fresh weight h⁻¹) in the high‐affinity uptake system. However, at high concentrations of 0.5–2.5 mM As only G. versiforme was able to reduce As influx. The results show that mycorrhizal effects on As uptake of upland rice are both concentration and species‐specific. Copyright © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish
Pages (from-to)333-338
JournalJournal of Plant Nutrition and Soil Science
Volume178
Issue number2
Early online dateMar 2015
DOIs
Publication statusPublished - Apr 2015

Citation

Wu, F., Liu, X., Wu, S., & Wong, M. H. (2015). Effects of mycorrhizal inoculation of upland rice on uptake kinetics of arsenate and arsenite. Journal of Plant Nutrition and Soil Science, 178(2), 333-338. doi: 10.1002/jpln.201400461

Keywords

  • AM fungi
  • Inorganic arsenic
  • Oryza sativa
  • Upland rice

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