Intra-specific variation in zinc, cadmium and nickel hypertolerance and hyperaccumulation capacities in Noccaea caerulescens

Anna D. Kozhevnikova; Ilya V. Seregin; Mark G.M. Aarts; Henk Schat

doi:10.1007/s11104-020-04572-7

Intra-specific variation in zinc, cadmium and nickel hypertolerance and hyperaccumulation capacities in Noccaea caerulescens

Anna D. Kozhevnikova, Ilya V. Seregin, Mark G.M. Aarts, Henk Schat^*

^*Corresponding author for this work

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

Aims: The study aimed at characterizing the patterns of natural variation in the tolerance and accumulation capacities for zinc (Zn), cadmium (Cd), and nickel (Ni) between and within edaphic ecotypes of the Zn/Cd/Ni hyperaccumulator, Noccaea caerulescens.

Methods: Tolerance was assessed in a hydroponic ‘sequential exposure’ test, using the lowest concentration that completely arrested root growth as an end point. Accumulation was measured as the foliar metal concentration after six weeks of growth at 5 µM Zn, 2 µM Cd, or 1 µM Ni.

Results: Zn and Cd tolerance were positively correlated, and highest in the calamine ecotype. Ni tolerance was without significant ecotypic variation. The ultramafic ecotype was as Zn-tolerant as the non-metallicolous one, but much more sensitive to Cd. The accumulation capacities for Zn, Cd and Ni were all positively correlated and without significant ecotypic variation. Zn hyperaccumulation capacity was species-wide, but Cd and Ni hyperaccumulation capacities were lacking in four populations (all calamine).

Conclusions: There is considerable independent variation among populations regarding their Zn, Cd, and Ni accumulation capacities. This variation is most pronounced within the calamine ecotype, because some populations apparently had adopted an exclusion strategy for Zn or Cd hypertolerance, whereas others had not.

Original language	English
Pages (from-to)	479-498
Number of pages	20
Journal	Plant and Soil
Volume	452
Issue number	1-2
Early online date	12 Jun 2020
DOIs	https://doi.org/10.1007/s11104-020-04572-7
Publication status	Published - Jul 2020

Funding

The authors wish to thank Mathilde Mousset, Thibault Sterckeman, Celestino Quintela-Sabarís, Petra Kidd, Oihana Barrutía and Sylvain Merlot for supplying seeds of N. caerulescens , Hélène Frérot-Pauwels for seeds of A. lyrata and A. halleri , Takafumi Mizuno for seeds of N. japonicum , and Rudo Verweij, Rob Broekman, Richard van Logtestijn, Riet Vooijs and Sandy Goette for technical assistance. This work was partially supported by the grants from the Russian Foundation for Basic Research (RFBR, № 19-04-00369) and from the international scientific program GDRI LOCOMET (Transport, localization and complexation of metals in hyperaccumulating plants) funded by The National Centre for Scientific Research, France; and partially by the Ministry of Science and Higher Education of the Russian Federation (state assignment №АААА-А19-119040290058-5).

Funders	Funder number
Petra Kidd
Russian Foundation for Basic Research	19-04-00369
Ministry of Education and Science of the Russian Federation	АААА-А19-119040290058-5
Centre National de la Recherche Scientifique
Ministry of Science and Higher Education of the Russian Federation

Keywords

Cadmium
Ecotypic variation
Heavy metal adaptation
Metal hyperaccumulation
Metal tolerance
Metallophyte
Nickel
Noccaea caerulescens
Root growth
Zinc

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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@article{279bf7ebc4754d3eb981debda9afc49f,

title = "Intra-specific variation in zinc, cadmium and nickel hypertolerance and hyperaccumulation capacities in Noccaea caerulescens",

abstract = "Aims: The study aimed at characterizing the patterns of natural variation in the tolerance and accumulation capacities for zinc (Zn), cadmium (Cd), and nickel (Ni) between and within edaphic ecotypes of the Zn/Cd/Ni hyperaccumulator, Noccaea caerulescens. Methods: Tolerance was assessed in a hydroponic {\textquoteleft}sequential exposure{\textquoteright} test, using the lowest concentration that completely arrested root growth as an end point. Accumulation was measured as the foliar metal concentration after six weeks of growth at 5 µM Zn, 2 µM Cd, or 1 µM Ni. Results: Zn and Cd tolerance were positively correlated, and highest in the calamine ecotype. Ni tolerance was without significant ecotypic variation. The ultramafic ecotype was as Zn-tolerant as the non-metallicolous one, but much more sensitive to Cd. The accumulation capacities for Zn, Cd and Ni were all positively correlated and without significant ecotypic variation. Zn hyperaccumulation capacity was species-wide, but Cd and Ni hyperaccumulation capacities were lacking in four populations (all calamine). Conclusions: There is considerable independent variation among populations regarding their Zn, Cd, and Ni accumulation capacities. This variation is most pronounced within the calamine ecotype, because some populations apparently had adopted an exclusion strategy for Zn or Cd hypertolerance, whereas others had not.",

keywords = "Cadmium, Ecotypic variation, Heavy metal adaptation, Metal hyperaccumulation, Metal tolerance, Metallophyte, Nickel, Noccaea caerulescens, Root growth, Zinc",

author = "Kozhevnikova, {Anna D.} and Seregin, {Ilya V.} and Aarts, {Mark G.M.} and Henk Schat",

year = "2020",

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doi = "10.1007/s11104-020-04572-7",

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volume = "452",

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journal = "Plant and Soil",

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TY - JOUR

T1 - Intra-specific variation in zinc, cadmium and nickel hypertolerance and hyperaccumulation capacities in Noccaea caerulescens

AU - Kozhevnikova, Anna D.

AU - Seregin, Ilya V.

AU - Aarts, Mark G.M.

AU - Schat, Henk

PY - 2020/7

Y1 - 2020/7

N2 - Aims: The study aimed at characterizing the patterns of natural variation in the tolerance and accumulation capacities for zinc (Zn), cadmium (Cd), and nickel (Ni) between and within edaphic ecotypes of the Zn/Cd/Ni hyperaccumulator, Noccaea caerulescens. Methods: Tolerance was assessed in a hydroponic ‘sequential exposure’ test, using the lowest concentration that completely arrested root growth as an end point. Accumulation was measured as the foliar metal concentration after six weeks of growth at 5 µM Zn, 2 µM Cd, or 1 µM Ni. Results: Zn and Cd tolerance were positively correlated, and highest in the calamine ecotype. Ni tolerance was without significant ecotypic variation. The ultramafic ecotype was as Zn-tolerant as the non-metallicolous one, but much more sensitive to Cd. The accumulation capacities for Zn, Cd and Ni were all positively correlated and without significant ecotypic variation. Zn hyperaccumulation capacity was species-wide, but Cd and Ni hyperaccumulation capacities were lacking in four populations (all calamine). Conclusions: There is considerable independent variation among populations regarding their Zn, Cd, and Ni accumulation capacities. This variation is most pronounced within the calamine ecotype, because some populations apparently had adopted an exclusion strategy for Zn or Cd hypertolerance, whereas others had not.

AB - Aims: The study aimed at characterizing the patterns of natural variation in the tolerance and accumulation capacities for zinc (Zn), cadmium (Cd), and nickel (Ni) between and within edaphic ecotypes of the Zn/Cd/Ni hyperaccumulator, Noccaea caerulescens. Methods: Tolerance was assessed in a hydroponic ‘sequential exposure’ test, using the lowest concentration that completely arrested root growth as an end point. Accumulation was measured as the foliar metal concentration after six weeks of growth at 5 µM Zn, 2 µM Cd, or 1 µM Ni. Results: Zn and Cd tolerance were positively correlated, and highest in the calamine ecotype. Ni tolerance was without significant ecotypic variation. The ultramafic ecotype was as Zn-tolerant as the non-metallicolous one, but much more sensitive to Cd. The accumulation capacities for Zn, Cd and Ni were all positively correlated and without significant ecotypic variation. Zn hyperaccumulation capacity was species-wide, but Cd and Ni hyperaccumulation capacities were lacking in four populations (all calamine). Conclusions: There is considerable independent variation among populations regarding their Zn, Cd, and Ni accumulation capacities. This variation is most pronounced within the calamine ecotype, because some populations apparently had adopted an exclusion strategy for Zn or Cd hypertolerance, whereas others had not.

KW - Cadmium

KW - Ecotypic variation

KW - Heavy metal adaptation

KW - Metal hyperaccumulation

KW - Metal tolerance

KW - Metallophyte

KW - Nickel

KW - Noccaea caerulescens

KW - Root growth

KW - Zinc

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Intra-specific variation in zinc, cadmium and nickel hypertolerance and hyperaccumulation capacities in Noccaea caerulescens

Abstract

Funding

Keywords

UN SDGs

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