An arsenic-accumulating, hypertolerant brassica, Isatis capadocica

Naser Karimi, Seyed Majid Ghaderian, Andrea Raab, Jorg Feldmann, Andrew Alexander Meharg

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Isatis capadocica, a brassica collected from Iranian arsenic-contaminated mine spoils and control populations, was examined to determine arsenate tolerance, metabolism and accumulation.

I. cappadocica exhibited arsenate hypertolerance in both mine and nonmine populations, actively growing at concentrations of >1 mM arsenate in hydroponic solution.

I. cappadocica had an ability to accumulate high concentrations of arsenic in its shoots, in excess of 100 mg kg(-1) DW, with a shoot : root transfer ratio of >1. The ability to accumulate arsenic was exhibited in both hydroponics and contaminated soils.

Tolerance in this species was not achieved through suppression of high-affinity phosphate/arsenate root transport, in contrast to other monocotyledons and dicotyledons. A high percentage (>50%) of arsenic in the tissues was phytochelatin complexed; however, it is argued that this is a constitutive, rather than an adaptive, mechanism of tolerance.

Original languageEnglish
Pages (from-to)41-47
Number of pages7
JournalNew Phytologist
Volume184
Issue number1
Early online date27 Jul 2009
DOIs
Publication statusPublished - Oct 2009

Keywords

  • arsenate
  • arsenic
  • hypertolerance
  • Isatis capadocica
  • phytochelatins
  • HOLCUS-LANATUS L
  • PTERIS-VITTATA
  • INDIAN MUSTARD
  • YORKSHIRE FOG
  • TOLERANCE
  • JUNCEA
  • FERN
  • L.

Cite this

An arsenic-accumulating, hypertolerant brassica, Isatis capadocica. / Karimi, Naser; Ghaderian, Seyed Majid; Raab, Andrea; Feldmann, Jorg; Meharg, Andrew Alexander.

In: New Phytologist, Vol. 184, No. 1, 10.2009, p. 41-47.

Research output: Contribution to journalArticle

Karimi, Naser ; Ghaderian, Seyed Majid ; Raab, Andrea ; Feldmann, Jorg ; Meharg, Andrew Alexander. / An arsenic-accumulating, hypertolerant brassica, Isatis capadocica. In: New Phytologist. 2009 ; Vol. 184, No. 1. pp. 41-47.
@article{db4abcd14cfa41929b68aa37a11a0737,
title = "An arsenic-accumulating, hypertolerant brassica, Isatis capadocica",
abstract = "Isatis capadocica, a brassica collected from Iranian arsenic-contaminated mine spoils and control populations, was examined to determine arsenate tolerance, metabolism and accumulation.I. cappadocica exhibited arsenate hypertolerance in both mine and nonmine populations, actively growing at concentrations of >1 mM arsenate in hydroponic solution.I. cappadocica had an ability to accumulate high concentrations of arsenic in its shoots, in excess of 100 mg kg(-1) DW, with a shoot : root transfer ratio of >1. The ability to accumulate arsenic was exhibited in both hydroponics and contaminated soils.Tolerance in this species was not achieved through suppression of high-affinity phosphate/arsenate root transport, in contrast to other monocotyledons and dicotyledons. A high percentage (>50{\%}) of arsenic in the tissues was phytochelatin complexed; however, it is argued that this is a constitutive, rather than an adaptive, mechanism of tolerance.",
keywords = "arsenate, arsenic, hypertolerance, Isatis capadocica, phytochelatins, HOLCUS-LANATUS L, PTERIS-VITTATA, INDIAN MUSTARD, YORKSHIRE FOG, TOLERANCE, JUNCEA, FERN, L.",
author = "Naser Karimi and Ghaderian, {Seyed Majid} and Andrea Raab and Jorg Feldmann and Meharg, {Andrew Alexander}",
year = "2009",
month = "10",
doi = "10.1111/j.1469-8137.2009.02982.x",
language = "English",
volume = "184",
pages = "41--47",
journal = "New Phytologist",
issn = "0028-646X",
publisher = "Wiley/Blackwell (10.1111)",
number = "1",

}

TY - JOUR

T1 - An arsenic-accumulating, hypertolerant brassica, Isatis capadocica

AU - Karimi, Naser

AU - Ghaderian, Seyed Majid

AU - Raab, Andrea

AU - Feldmann, Jorg

AU - Meharg, Andrew Alexander

PY - 2009/10

Y1 - 2009/10

N2 - Isatis capadocica, a brassica collected from Iranian arsenic-contaminated mine spoils and control populations, was examined to determine arsenate tolerance, metabolism and accumulation.I. cappadocica exhibited arsenate hypertolerance in both mine and nonmine populations, actively growing at concentrations of >1 mM arsenate in hydroponic solution.I. cappadocica had an ability to accumulate high concentrations of arsenic in its shoots, in excess of 100 mg kg(-1) DW, with a shoot : root transfer ratio of >1. The ability to accumulate arsenic was exhibited in both hydroponics and contaminated soils.Tolerance in this species was not achieved through suppression of high-affinity phosphate/arsenate root transport, in contrast to other monocotyledons and dicotyledons. A high percentage (>50%) of arsenic in the tissues was phytochelatin complexed; however, it is argued that this is a constitutive, rather than an adaptive, mechanism of tolerance.

AB - Isatis capadocica, a brassica collected from Iranian arsenic-contaminated mine spoils and control populations, was examined to determine arsenate tolerance, metabolism and accumulation.I. cappadocica exhibited arsenate hypertolerance in both mine and nonmine populations, actively growing at concentrations of >1 mM arsenate in hydroponic solution.I. cappadocica had an ability to accumulate high concentrations of arsenic in its shoots, in excess of 100 mg kg(-1) DW, with a shoot : root transfer ratio of >1. The ability to accumulate arsenic was exhibited in both hydroponics and contaminated soils.Tolerance in this species was not achieved through suppression of high-affinity phosphate/arsenate root transport, in contrast to other monocotyledons and dicotyledons. A high percentage (>50%) of arsenic in the tissues was phytochelatin complexed; however, it is argued that this is a constitutive, rather than an adaptive, mechanism of tolerance.

KW - arsenate

KW - arsenic

KW - hypertolerance

KW - Isatis capadocica

KW - phytochelatins

KW - HOLCUS-LANATUS L

KW - PTERIS-VITTATA

KW - INDIAN MUSTARD

KW - YORKSHIRE FOG

KW - TOLERANCE

KW - JUNCEA

KW - FERN

KW - L.

U2 - 10.1111/j.1469-8137.2009.02982.x

DO - 10.1111/j.1469-8137.2009.02982.x

M3 - Article

VL - 184

SP - 41

EP - 47

JO - New Phytologist

JF - New Phytologist

SN - 0028-646X

IS - 1

ER -