Trace elements in the soil-plant interface: Phytoavailability, translocation, and phytoremediation–A review

Vasileios Antoniadis, Efi Levizou, Sabry M. Shaheen, Yong Sik Ok, Abin Sebastian, Christel Baum, Majeti N.V. Prasad, Walter W. Wenzel, Jörg Rinklebe

Research output: Contribution to journalReview article

133 Citations (Scopus)

Abstract

Trace elements (TEs) are deposited to soils mainly due to anthropogenic activities and pose a significant threat to human health. In this review we aimed at (a) discussing the phytoavailability of TEs as affected by various soil parameters, and by plant defense mechanisms related to uptake and translocation; (b) examining soil and plant indices related to TE phytoavailability; (c) clarifying the challenges and problems related to phytoremediation; and (d) exploring the often encountered discrepancies of lower-than-expected TE toxicity. We particularly discussed the soil-to-plant availability index (transfer coefficient, TC), because it encompasses all soil and plant factors related to TE phytoavailability. As for soil, we explored the effect of pH, redox potential, clay and organic matter contents, as well as aging of added elements. The latter is a key factor in interpreting the observed lower-than-expected toxicity to plants in real field conditions. This is because the discrepancy is very often generated by growth experiments that expose plants to TEs directly from TE-laden solutions or by studies that spike soils with TEs only days or weeks before planting. Also, the behavior of TEs depends on the nature and quantity of TEs. As for plant, TE absorption or exclusion is highly related to species-specific defense mechanisms developed by plants so that they are exposed to TE-induced stress. These mechanisms address TE exposure by operating both outside and inside the plant body; outside with the assistance of root exudates, and the rhizosphere microflora, and inside with selective translocation and storage processes. The absorption/exclusion behavior of plants also depends on root activities and related soil chemical processes which are highly localized within a spatial scale of a few mm from roots. Novel techniques for the imaging of TE biogeochemistry at the root-soil interface are therefore addressed and their explanatory power is demonstrated. Such plant behavior greatly affects phytoremediation, a process which also depends on the maximal TE uptake capacity of plants, especially of hyperaccumulators. However, phytoremediation also greatly depends on plant biomass yield, an important factor in determining the time required to complete the procedure. In conclusion, soil factors, as well as plant- and TE- related issues, may create discrepancies in TE phytoavailability and phytoremediation that need to be thoroughly understood and addressed.

Original languageEnglish
Pages (from-to)621-645
Number of pages25
JournalEarth-Science Reviews
Volume171
DOIs
Publication statusPublished - 2017 Aug 1
Externally publishedYes

Fingerprint

translocation
trace element
soil
phytoremediation
defense mechanism
toxicity
plant defense
redox potential
biogeochemistry
chemical process
rhizosphere

Keywords

  • Bioavailability
  • Heavy metals
  • Phytomanagement
  • Root
  • Soil remediation
  • Soil-plant interaction

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

Cite this

Trace elements in the soil-plant interface : Phytoavailability, translocation, and phytoremediation–A review. / Antoniadis, Vasileios; Levizou, Efi; Shaheen, Sabry M.; Ok, Yong Sik; Sebastian, Abin; Baum, Christel; Prasad, Majeti N.V.; Wenzel, Walter W.; Rinklebe, Jörg.

In: Earth-Science Reviews, Vol. 171, 01.08.2017, p. 621-645.

Research output: Contribution to journalReview article

Antoniadis, V, Levizou, E, Shaheen, SM, Ok, YS, Sebastian, A, Baum, C, Prasad, MNV, Wenzel, WW & Rinklebe, J 2017, 'Trace elements in the soil-plant interface: Phytoavailability, translocation, and phytoremediation–A review', Earth-Science Reviews, vol. 171, pp. 621-645. https://doi.org/10.1016/j.earscirev.2017.06.005
Antoniadis, Vasileios ; Levizou, Efi ; Shaheen, Sabry M. ; Ok, Yong Sik ; Sebastian, Abin ; Baum, Christel ; Prasad, Majeti N.V. ; Wenzel, Walter W. ; Rinklebe, Jörg. / Trace elements in the soil-plant interface : Phytoavailability, translocation, and phytoremediation–A review. In: Earth-Science Reviews. 2017 ; Vol. 171. pp. 621-645.
@article{0d9637aaf9c947c988d050fddd2ab65f,
title = "Trace elements in the soil-plant interface: Phytoavailability, translocation, and phytoremediation–A review",
abstract = "Trace elements (TEs) are deposited to soils mainly due to anthropogenic activities and pose a significant threat to human health. In this review we aimed at (a) discussing the phytoavailability of TEs as affected by various soil parameters, and by plant defense mechanisms related to uptake and translocation; (b) examining soil and plant indices related to TE phytoavailability; (c) clarifying the challenges and problems related to phytoremediation; and (d) exploring the often encountered discrepancies of lower-than-expected TE toxicity. We particularly discussed the soil-to-plant availability index (transfer coefficient, TC), because it encompasses all soil and plant factors related to TE phytoavailability. As for soil, we explored the effect of pH, redox potential, clay and organic matter contents, as well as aging of added elements. The latter is a key factor in interpreting the observed lower-than-expected toxicity to plants in real field conditions. This is because the discrepancy is very often generated by growth experiments that expose plants to TEs directly from TE-laden solutions or by studies that spike soils with TEs only days or weeks before planting. Also, the behavior of TEs depends on the nature and quantity of TEs. As for plant, TE absorption or exclusion is highly related to species-specific defense mechanisms developed by plants so that they are exposed to TE-induced stress. These mechanisms address TE exposure by operating both outside and inside the plant body; outside with the assistance of root exudates, and the rhizosphere microflora, and inside with selective translocation and storage processes. The absorption/exclusion behavior of plants also depends on root activities and related soil chemical processes which are highly localized within a spatial scale of a few mm from roots. Novel techniques for the imaging of TE biogeochemistry at the root-soil interface are therefore addressed and their explanatory power is demonstrated. Such plant behavior greatly affects phytoremediation, a process which also depends on the maximal TE uptake capacity of plants, especially of hyperaccumulators. However, phytoremediation also greatly depends on plant biomass yield, an important factor in determining the time required to complete the procedure. In conclusion, soil factors, as well as plant- and TE- related issues, may create discrepancies in TE phytoavailability and phytoremediation that need to be thoroughly understood and addressed.",
keywords = "Bioavailability, Heavy metals, Phytomanagement, Root, Soil remediation, Soil-plant interaction",
author = "Vasileios Antoniadis and Efi Levizou and Shaheen, {Sabry M.} and Ok, {Yong Sik} and Abin Sebastian and Christel Baum and Prasad, {Majeti N.V.} and Wenzel, {Walter W.} and J{\"o}rg Rinklebe",
year = "2017",
month = "8",
day = "1",
doi = "10.1016/j.earscirev.2017.06.005",
language = "English",
volume = "171",
pages = "621--645",
journal = "Earth-Science Reviews",
issn = "0012-8252",
publisher = "Elsevier",

}

TY - JOUR

T1 - Trace elements in the soil-plant interface

T2 - Phytoavailability, translocation, and phytoremediation–A review

AU - Antoniadis, Vasileios

AU - Levizou, Efi

AU - Shaheen, Sabry M.

AU - Ok, Yong Sik

AU - Sebastian, Abin

AU - Baum, Christel

AU - Prasad, Majeti N.V.

AU - Wenzel, Walter W.

AU - Rinklebe, Jörg

PY - 2017/8/1

Y1 - 2017/8/1

N2 - Trace elements (TEs) are deposited to soils mainly due to anthropogenic activities and pose a significant threat to human health. In this review we aimed at (a) discussing the phytoavailability of TEs as affected by various soil parameters, and by plant defense mechanisms related to uptake and translocation; (b) examining soil and plant indices related to TE phytoavailability; (c) clarifying the challenges and problems related to phytoremediation; and (d) exploring the often encountered discrepancies of lower-than-expected TE toxicity. We particularly discussed the soil-to-plant availability index (transfer coefficient, TC), because it encompasses all soil and plant factors related to TE phytoavailability. As for soil, we explored the effect of pH, redox potential, clay and organic matter contents, as well as aging of added elements. The latter is a key factor in interpreting the observed lower-than-expected toxicity to plants in real field conditions. This is because the discrepancy is very often generated by growth experiments that expose plants to TEs directly from TE-laden solutions or by studies that spike soils with TEs only days or weeks before planting. Also, the behavior of TEs depends on the nature and quantity of TEs. As for plant, TE absorption or exclusion is highly related to species-specific defense mechanisms developed by plants so that they are exposed to TE-induced stress. These mechanisms address TE exposure by operating both outside and inside the plant body; outside with the assistance of root exudates, and the rhizosphere microflora, and inside with selective translocation and storage processes. The absorption/exclusion behavior of plants also depends on root activities and related soil chemical processes which are highly localized within a spatial scale of a few mm from roots. Novel techniques for the imaging of TE biogeochemistry at the root-soil interface are therefore addressed and their explanatory power is demonstrated. Such plant behavior greatly affects phytoremediation, a process which also depends on the maximal TE uptake capacity of plants, especially of hyperaccumulators. However, phytoremediation also greatly depends on plant biomass yield, an important factor in determining the time required to complete the procedure. In conclusion, soil factors, as well as plant- and TE- related issues, may create discrepancies in TE phytoavailability and phytoremediation that need to be thoroughly understood and addressed.

AB - Trace elements (TEs) are deposited to soils mainly due to anthropogenic activities and pose a significant threat to human health. In this review we aimed at (a) discussing the phytoavailability of TEs as affected by various soil parameters, and by plant defense mechanisms related to uptake and translocation; (b) examining soil and plant indices related to TE phytoavailability; (c) clarifying the challenges and problems related to phytoremediation; and (d) exploring the often encountered discrepancies of lower-than-expected TE toxicity. We particularly discussed the soil-to-plant availability index (transfer coefficient, TC), because it encompasses all soil and plant factors related to TE phytoavailability. As for soil, we explored the effect of pH, redox potential, clay and organic matter contents, as well as aging of added elements. The latter is a key factor in interpreting the observed lower-than-expected toxicity to plants in real field conditions. This is because the discrepancy is very often generated by growth experiments that expose plants to TEs directly from TE-laden solutions or by studies that spike soils with TEs only days or weeks before planting. Also, the behavior of TEs depends on the nature and quantity of TEs. As for plant, TE absorption or exclusion is highly related to species-specific defense mechanisms developed by plants so that they are exposed to TE-induced stress. These mechanisms address TE exposure by operating both outside and inside the plant body; outside with the assistance of root exudates, and the rhizosphere microflora, and inside with selective translocation and storage processes. The absorption/exclusion behavior of plants also depends on root activities and related soil chemical processes which are highly localized within a spatial scale of a few mm from roots. Novel techniques for the imaging of TE biogeochemistry at the root-soil interface are therefore addressed and their explanatory power is demonstrated. Such plant behavior greatly affects phytoremediation, a process which also depends on the maximal TE uptake capacity of plants, especially of hyperaccumulators. However, phytoremediation also greatly depends on plant biomass yield, an important factor in determining the time required to complete the procedure. In conclusion, soil factors, as well as plant- and TE- related issues, may create discrepancies in TE phytoavailability and phytoremediation that need to be thoroughly understood and addressed.

KW - Bioavailability

KW - Heavy metals

KW - Phytomanagement

KW - Root

KW - Soil remediation

KW - Soil-plant interaction

UR - http://www.scopus.com/inward/record.url?scp=85026867624&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85026867624&partnerID=8YFLogxK

U2 - 10.1016/j.earscirev.2017.06.005

DO - 10.1016/j.earscirev.2017.06.005

M3 - Review article

AN - SCOPUS:85026867624

VL - 171

SP - 621

EP - 645

JO - Earth-Science Reviews

JF - Earth-Science Reviews

SN - 0012-8252

ER -