Screening of As-Accumulating Plants Using a Foliar Application and A Native Accumulation of As

Z. Zhang, K. Sugawara, M. Hatayama, Y. Huang, Chihiro Inoue

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The discovery of novel accumulating plants is useful for efficient phytoremediation due to the demands of various conditions of impacted sites such as land use, soil properties, concentration of pollutants, and climate. In the present study, we investigated foliar application or a field with highly bioavailable arsenic (As) to screen As-accumulating plants. Plants grown in the downstream of a hot springs area were analyzed for native As accumulation and As foliar application, and the rhizosphere soils were collected. The water-soluble As in the rhizosphere soils had a high average, 144 μg/kg, whereas total As was similar to normal soil in Japan. Among 34 herbaceous plants and 17 woody plants, Chelidonium majus var. asiaticum accumulated a relatively high As level, 8.07 mg/kg DW (93.6% of As added), that was not revealed by native accumulation. In a further pot experiment, C. majus accumulated a moderately high As level (314 mg/kg DW) in the roots but not in the shoot (30.1 mg/kg DW), and exhibited a low transfer factor (TF = 0.096). Thus, a foliar application would be a simple and high-throughput method to screen plants that accumulate and tolerate As. C. majus would be useful as a tool for phytostabilization of As.

Original languageEnglish
Pages (from-to)257-266
Number of pages10
JournalInternational Journal of Phytoremediation
Volume16
Issue number3
DOIs
Publication statusPublished - 2014 Mar 1

Keywords

  • Arsenic
  • Foliar application
  • Phytoremediation
  • Phytostabilization
  • Screening

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Plant Science

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