Antimony tolerance and accumulation in a metallicolous and a non-metallicolous population of Salvia spinosa L.

Shakiba Rajabpoor, Seyed Majid Ghaderian, Henk Schat

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Aims: Antimony (Sb) is locally found at potentially toxic concentrations in mineralized soils, usually together with arsenic (As). However, local adaptation of plant populations to Sb toxicity has never been shown thus far. Here we compared Sb tolerance and accumulation between a non-metallicolous (NM) population of Salvia spinosa, and a con-specific metallicolous (M) population from a strongly Sb/As-enriched soil in Dashkasan, Iran. Methods: Plants were exposed in hydroponics to a series of Sb[III] and Sb[V] concentrations. After 3 weeks the dry weights and Sb concentrations of roots and shoots were determined. Results: Estimated from the effects on shoot dry weight, the M population was more tolerant than the NM one, particularly to Sb[V], but to a lower degree also to Sb[III]. In both populations Sb[III] was taken up and translocated at higher rates than Sb[V]. The Sb concentrations in roots and shoots were slightly, but significantly higher in the M than in the NM population. Conclusions: Since Sb[V] and As[V] seem to follow very different detoxification pathways, it can be argued that the superior tolerance to Sb[V] in M represents a local adaptation to Sb[V] toxicity itself, rather than being a mere by-product of hypertolerance to its chemical analogue, As[V]. Since Sb[III] and As[III] or As[V] share common detoxification pathways, the apparent Sb[III] hypertolerance in the M population might represent a by-product of As hypertolerance.

Original languageEnglish
Pages (from-to)11-20
Number of pages10
JournalPlant and Soil
Volume437
Issue number1-2
Early online date1 Feb 2019
DOIs
Publication statusE-pub ahead of print - 1 Feb 2019

Fingerprint

antimony
Salvia
arsenic
tolerance
shoot
local adaptation
detoxification
shoots
toxicity
plant adaptation
hydroponics
soil
Iran

Keywords

  • Accumulation
  • Antimony
  • Arsenic
  • Dashkasan
  • Salvia spinosa
  • Tolerance

Cite this

Rajabpoor, Shakiba ; Ghaderian, Seyed Majid ; Schat, Henk. / Antimony tolerance and accumulation in a metallicolous and a non-metallicolous population of Salvia spinosa L. In: Plant and Soil. 2019 ; Vol. 437, No. 1-2. pp. 11-20.
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title = "Antimony tolerance and accumulation in a metallicolous and a non-metallicolous population of Salvia spinosa L.",
abstract = "Aims: Antimony (Sb) is locally found at potentially toxic concentrations in mineralized soils, usually together with arsenic (As). However, local adaptation of plant populations to Sb toxicity has never been shown thus far. Here we compared Sb tolerance and accumulation between a non-metallicolous (NM) population of Salvia spinosa, and a con-specific metallicolous (M) population from a strongly Sb/As-enriched soil in Dashkasan, Iran. Methods: Plants were exposed in hydroponics to a series of Sb[III] and Sb[V] concentrations. After 3 weeks the dry weights and Sb concentrations of roots and shoots were determined. Results: Estimated from the effects on shoot dry weight, the M population was more tolerant than the NM one, particularly to Sb[V], but to a lower degree also to Sb[III]. In both populations Sb[III] was taken up and translocated at higher rates than Sb[V]. The Sb concentrations in roots and shoots were slightly, but significantly higher in the M than in the NM population. Conclusions: Since Sb[V] and As[V] seem to follow very different detoxification pathways, it can be argued that the superior tolerance to Sb[V] in M represents a local adaptation to Sb[V] toxicity itself, rather than being a mere by-product of hypertolerance to its chemical analogue, As[V]. Since Sb[III] and As[III] or As[V] share common detoxification pathways, the apparent Sb[III] hypertolerance in the M population might represent a by-product of As hypertolerance.",
keywords = "Accumulation, Antimony, Arsenic, Dashkasan, Salvia spinosa, Tolerance",
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Antimony tolerance and accumulation in a metallicolous and a non-metallicolous population of Salvia spinosa L. / Rajabpoor, Shakiba; Ghaderian, Seyed Majid; Schat, Henk.

In: Plant and Soil, Vol. 437, No. 1-2, 01.02.2019, p. 11-20.

Research output: Contribution to JournalArticleAcademicpeer-review

TY - JOUR

T1 - Antimony tolerance and accumulation in a metallicolous and a non-metallicolous population of Salvia spinosa L.

AU - Rajabpoor, Shakiba

AU - Ghaderian, Seyed Majid

AU - Schat, Henk

PY - 2019/2/1

Y1 - 2019/2/1

N2 - Aims: Antimony (Sb) is locally found at potentially toxic concentrations in mineralized soils, usually together with arsenic (As). However, local adaptation of plant populations to Sb toxicity has never been shown thus far. Here we compared Sb tolerance and accumulation between a non-metallicolous (NM) population of Salvia spinosa, and a con-specific metallicolous (M) population from a strongly Sb/As-enriched soil in Dashkasan, Iran. Methods: Plants were exposed in hydroponics to a series of Sb[III] and Sb[V] concentrations. After 3 weeks the dry weights and Sb concentrations of roots and shoots were determined. Results: Estimated from the effects on shoot dry weight, the M population was more tolerant than the NM one, particularly to Sb[V], but to a lower degree also to Sb[III]. In both populations Sb[III] was taken up and translocated at higher rates than Sb[V]. The Sb concentrations in roots and shoots were slightly, but significantly higher in the M than in the NM population. Conclusions: Since Sb[V] and As[V] seem to follow very different detoxification pathways, it can be argued that the superior tolerance to Sb[V] in M represents a local adaptation to Sb[V] toxicity itself, rather than being a mere by-product of hypertolerance to its chemical analogue, As[V]. Since Sb[III] and As[III] or As[V] share common detoxification pathways, the apparent Sb[III] hypertolerance in the M population might represent a by-product of As hypertolerance.

AB - Aims: Antimony (Sb) is locally found at potentially toxic concentrations in mineralized soils, usually together with arsenic (As). However, local adaptation of plant populations to Sb toxicity has never been shown thus far. Here we compared Sb tolerance and accumulation between a non-metallicolous (NM) population of Salvia spinosa, and a con-specific metallicolous (M) population from a strongly Sb/As-enriched soil in Dashkasan, Iran. Methods: Plants were exposed in hydroponics to a series of Sb[III] and Sb[V] concentrations. After 3 weeks the dry weights and Sb concentrations of roots and shoots were determined. Results: Estimated from the effects on shoot dry weight, the M population was more tolerant than the NM one, particularly to Sb[V], but to a lower degree also to Sb[III]. In both populations Sb[III] was taken up and translocated at higher rates than Sb[V]. The Sb concentrations in roots and shoots were slightly, but significantly higher in the M than in the NM population. Conclusions: Since Sb[V] and As[V] seem to follow very different detoxification pathways, it can be argued that the superior tolerance to Sb[V] in M represents a local adaptation to Sb[V] toxicity itself, rather than being a mere by-product of hypertolerance to its chemical analogue, As[V]. Since Sb[III] and As[III] or As[V] share common detoxification pathways, the apparent Sb[III] hypertolerance in the M population might represent a by-product of As hypertolerance.

KW - Accumulation

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