The distribution of Minuartia verna and Thlaspi alpestre in the British Isles in relation to 13 soil metals

García-González, Alejandro; Clark, Simon

doi:10.1007/bf00036509

Cited by 17 publications

(4 citation statements)

References 23 publications

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“…1), and it name which proved to be illegitimate (Gutermann, also occurs on both undisturbed (naturally 1975) Manv other earlier names have been applied mineralized) and disturbed (mine and smelter waste) regionally to British and other European material sites. Other more detailed field studies (Shimwell, 1968; Smith, 1979;Hajar, 1987;Garcia-Gonzalez & Clark, 1989) have confirmed this preference of the species for soils of high heavy metal (zinc, cadmium and lead) status.…”

Section: Introduction ^J^^^ Clear That T Caerulescens Is a Highly Pomentioning

confidence: 73%

Heavy metal accumulation and tolerance in British populations of the metallophyte Thlaspi caerulescens J. & C. Presl (Brassicaceae)

1994

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SUMMARYHeavy metal uptake, accumulation and tolerance were investigated in five British populations of the metallophyte Thlaspi caerulescens from metalliferous sites from the north and south Pennines orefields. Analysis of field samples sbowed mean shoot Zn, Pb and Cd concentrations of up to 21 000, 660 and 164 //g g"' respectively, A solution culture experiment designed to investigate both tolerance and metal accumulation is reported. Indices of tolerance of five populations to 12 metals (Ag, A!, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Zn) showed few population differences but unexpectedly high tolerance to metals not present at elevated concentrations in the parent soils. This u-as paralleJed b> exceptionaWy high upt;ikes of all metals studied. Zn, Cd, Co, Mn and Ni were readily transported to the shoot whereas Al, Cr Cu, Fe and Pb were predominantly immobilized in the roots. The data suggest common mechanisms of absorption and transport of several metals in this species.

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Section: Introduction ^J^^^ Clear That T Caerulescens Is a Highly Pomentioning

confidence: 73%

Heavy metal accumulation and tolerance in British populations of the metallophyte Thlaspi caerulescens J. & C. Presl (Brassicaceae)

1994

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“…Zn–Cd enriched) and serpentine soil (Reeves & Brooks, 1983; Lloyd‐Thomas, 1995). Its occurrence on nonmetalliferous substrates has been more recently acknowledged, possibly because such populations are extremely rare in Great Britain, where the species ecology has been most thoroughly studied (Ingrouille & Smirnoff, 1986; Garcia‐Gonzalez & Clark, 1989; Baker et al ., 1994). Nonmetallicolous populations are apparently not rare in continental Europe (Koch et al ., 1998), where they often occur in mountain grassland (Ellenberg, 1988).…”

Section: Introductionmentioning

confidence: 99%

Thlaspi caerulescens on nonmetalliferous soil in Luxembourg: ecological niche and genetic variation in mineral element composition

et al. 2004

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Summary• Forty-seven populations of Thlaspi caerulescens in Luxembourg were characterised for population size, soil mineral element composition and other habitat characteristics. Foliar concentrations of eight elements were assessed in 15 populations in the field and in eight populations cultivated in zinc (Zn)-cadmium (Cd)-nickel (Ni)-enriched soil.• T. caerulescens favoured stony soil developed on steep, south-facing Emsian shale outcrops. All soil samples were nonmetalliferous. Soil pH ranged from 4.2 to 6.9. Field-growing plants had very high concentrations of heavy metals in the leaves (Zn, 3000 -13 000 mg kg − 1 ; Cd, 11-44 mg kg ). Positive soil-plant correlations existed for Zn and Mn.• In cultivation, significant genetic variation was found for biomass and six of eight mineral elements. For Cd and Zn, variation range among 48 half-sib families was two-fold (Cd, 183-334 mg kg − 1 ; Zn, 8030 -16 295 mg kg − 1 ). Most of the variation occurred among populations, consistent with the selfing mating system of those populations. There was a tight Zn-Cd genetic correlation ( r = +0.83, P < 0.0001).• The significance of the results to the conservation of T. caerulescens in Luxembourg is briefly discussed.

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“…Thiaspi caerulescetts J. & C. Presl (Brassicaceae) occurs mainly on Zn/Pb-enriched soils, and also on serpentines and non-mineralized soils (Ingrouille & Smirnoff 1986;Garcia-Gonzalez & Clark 1989;Baker & Proctor 1990), and has been identified as a Zn hyperaccumulator (Reeves & Brooks 1983). This speeies has attracted much interest reeently, beeause its potential to extraet large amounts of heavy metals from soils may be exploited in phytoremediation of contaminated land (McGrath et al 1993;Baker et al 1994a;Brown et al 1995a).…”

Section: Introductionmentioning

confidence: 99%

Uptake and transport of zinc in the hyperaccumulator Thlaspi caerulescens and the non‐hyperaccumulator Thlaspi ochroleucum

Shen

Zhao

McGrath

1997

Plant Cell & Environment

262

182

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Growth and zinc uptake of the hyperaccumulator species Thiaspi caerulescens ,1. & C. Presl and the non-hyperaccumulator species Thiaspi ochroleucum Boiss. & Heldr. were compared in solution culture experiments. T. caerulesecns was able to tolerate 500 mmol m"' (32-5 g m"') Zn in solution without growth reduction, and up to 1000 mmol m""^ (65 g m~"^) Zn without showing visible toxic symptoms but with a 25% decrease in dry matter (DM) yield. Up to 28 g kg"' of Zn in shoot DM was obtained in healthy plants of T. caerulescens. In contrast, 7'. ochroleucum suffered severe phytotoxicity at 500 mmol m~^ Zn. Marked differences were shown in Zn uptake, distribution and re-distribution between the two species. T. caerulescens had much higher concentrations of Zn in the shoots, whereas T. ochroleucum accumulated higher concentrations of Zn in the roots. When an external supply of 500 mmol m"^ Zn was withheld, 89% of the Zn accumulated previously in the roots of T. caerulescens was transported to tbe shoots over a 33 d period, whereas in 7". ochroleucum only 32% was transported. T. caerulescens was shown to have a greater internal requirement for Zn than other plants. Increasing the supply of Zn from 1 to 10 mmol m~' gave a 19% increase in the total DM of this species. Even the shoots from the 1 mmol m'^ Zn treatment which showed Zn deficiency contained 10 times greater Zn concentrations than the widely reported critical value for Zn deficiency to occur in many other plant species. The results obtained suggest that strongly expressed constitutive sequestration mechanisms exist in the hyperaccumulator 7'. caeruleseens, wbicb detoxify the large amount of Zn present in shoot tissues and decrea.se its physiological availability in tbe cytosol. Both T. caerulescens and T. ochroleiietim had constitutively high concentrations of malate in shoots, which were little affected by different Zn treatments. Although malate may play a role in Zn chelation because of tbe high concentrations present, it cannot explain the species specificity of Zn tolerance and hyperaccumulation.

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The distribution of Minuartia verna and Thlaspi alpestre in the British Isles in relation to 13 soil metals

Cited by 17 publications

References 23 publications

Heavy metal accumulation and tolerance in British populations of the metallophyte Thlaspi caerulescens J. & C. Presl (Brassicaceae)

Heavy metal accumulation and tolerance in British populations of the metallophyte Thlaspi caerulescens J. & C. Presl (Brassicaceae)

Thlaspi caerulescens on nonmetalliferous soil in Luxembourg: ecological niche and genetic variation in mineral element composition

Uptake and transport of zinc in the hyperaccumulator Thlaspi caerulescens and the non‐hyperaccumulator Thlaspi ochroleucum

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