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Natural variation of nickel, zinc and cadmium (hyper)accumulation in facultative serpentinophytes Noccaea kovatsii and N. praecox
Plant and Soil ( IF 4.9 ) Pub Date : 2019-12-19 , DOI: 10.1007/s11104-019-04402-5
Tomica Mišljenović , Slobodan Jovanović , Nevena Mihailović , Boško Gajić , Gordana Tomović , Alan J. M. Baker , Guillaume Echevarria , Ksenija Jakovljević

Data on the variability of hyperaccumulation potential of the facultative serpentinophytes Noccaea kovatsii and N. praecox on different geological substrates are scarce. The aim of this study was to assess the accumulation potential of these two species from ultramafic and non-ultramafic substrates, with special emphasis on the hyperaccumulation of Ni, Zn and Cd. Samples of plants and corresponding soils were collected from 16 sites covering a wide range of geochemistry. Elemental concentrations were determined in the roots, shoots and the rhizosphere soils. The pH, particle size distribution and content of organic matter were also determined in the soil samples. All ultramafic accessions of both species hyperaccumulated Ni with high intraspecific variability. Only one accession of N. kovatsii from a schist soil hyperaccumulated Zn, with also a high Cd accumulation. Accumulation and translocation of Ni in both species were much higher in the ultramafic accessions, whereas Zn accumulation and translocation was found in both ultramafic and non-ultramafic accessions. Ni accumulation and translocation was restricted to ultramafic populations of both species, whereas it is a species-wide trait for Zn. This study provides new and comprehensive information on the natural variation of hyperaccumulation of Ni, Zn and Cd in N. kovatsii and N. praecox.

中文翻译:

兼性蛇纹藻 Noccaea kovatsii 和 N. praecox 中镍、锌和镉(超)积累的自然变异

关于兼性蛇纹藻 Noccaea kovatsii 和 N. praecox 在不同地质基质上的超积累潜力变化的数据很少。本研究的目的是评估这两种物种在超镁铁质和非超镁铁质基质中的积累潜力,特别强调 Ni、Zn 和 Cd 的超积累。从涵盖广泛地球化学的 16 个地点收集了植物和相应土壤的样本。在根、芽和根际土壤中测定元素浓度。土壤样品中的 pH 值、粒径分布和有机质含量也被测定。两个物种的所有超镁铁质种质都以高种内变异性超积累 Ni。只有一个 N. kovatsii 来自片岩土壤超富集锌,还具有高 Cd 积累。两种物种中 Ni 的积累和易位在超镁铁质种质中都高得多,而在超镁铁质和非超镁铁质种质中都发现了 Zn 的积累和易位。Ni 的积累和易位仅限于两种物种的超镁铁质种群,而它是 Zn 的物种范围性状。本研究为 N. kovatsii 和 N. praecox 中 Ni、Zn 和 Cd 超积累的自然变化提供了新的综合信息。而它是 Zn 的物种范围性状。本研究为 N. kovatsii 和 N. praecox 中 Ni、Zn 和 Cd 超积累的自然变化提供了新的综合信息。而它是 Zn 的物种范围性状。本研究为 N. kovatsii 和 N. praecox 中 Ni、Zn 和 Cd 超积累的自然变化提供了新的综合信息。
更新日期:2019-12-19
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