Plants have developed a diversity of strategies to take up and store essential metals in order to colonize various types of soils including mineralized soils. Yet, our knowledge of the capacity of plant species to accumulate metals is still fragmentary across the plant kingdom. In this study, we have used the X-ray fluorescence technology to analyze metal concentration in a wide diversity of species of the Neotropical flora that was not extensively investigated so far. In total, we screened more than 11 000 specimens representing about 5000 species from herbaria in Paris and Cuba. Our study provides a large overview of the accumulation of metals such as manganese, zinc, and nickel in the Neotropical flora. We report 30 new nickel hyperaccumulating species from Cuba, including the first records in the families Connaraceae, Melastomataceae, Polygonaceae, Santalaceae, and Urticaceae. We also identified the first species from this region of the world that can be considered as manganese hyperaccumulators in the genera Lomatia (Proteaceae), Calycogonium (Melastomataceae), Ilex (Aquifoliaceae), Morella (Myricaceae), and Pimenta (Myrtaceae). Finally, we report the first zinc hyperaccumulator, Rinorea multivenosa (Violaceae), from the Amazonas region. The identification of species able to accumulate high amounts of metals will become instrumental to support the development of phytotechnologies in order to limit the impact of soil metal pollution in this region of the world.

中文翻译：

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新热带地区植物标本馆标本中多种元素的 X 射线荧光筛查揭示了植物中金属积累的新记录。

植物已经开发出多种策略来吸收和储存必需金属，以便在包括矿化土壤在内的各种土壤中定居。然而，我们对植物物种积累金属能力的了解在整个植物界仍然是零碎的。在这项研究中，我们使用 X 射线荧光技术分析了迄今为止尚未广泛研究的各种新热带植物群中的金属浓度。我们总共从巴黎和古巴的植物标本馆筛选了 11000 多个标本，代表约 5000 个物种。我们的研究对新热带植物群中锰、锌和镍等金属的积累进行了广泛的概述。我们报告了来自古巴的 30 种新的镍超富集物种，包括 Connaraceae、Melastomataceae、蓼科、檀香科和荨麻科。我们还确定了世界上该地区第一个可被视为锰超富集植物的物种，属于 Lomatia（Proteaceae）、Calycogonium（Melastomataceae）、Ilex（Aquifoliaceae）、Morella（Myricaceae）和 Pimenta（Myrtaceae）。最后，我们报告了来自亚马逊地区的第一个锌超富集植物 Rinorea multivenosa (Violaceae)。识别能够积累大量金属的物种将有助于支持植物技术的发展，以限制世界该地区土壤金属污染的影响。Calycogonium (Melastomataceae)、Ilex (Aquifoliaceae)、Morella (Myricaceae) 和 Pimenta (Myrtaceae)。最后，我们报告了来自亚马逊地区的第一个锌超富集植物 Rinorea multivenosa (Violaceae)。识别能够积累大量金属的物种将有助于支持植物技术的发展，以限制世界该地区土壤金属污染的影响。Calycogonium (Melastomataceae)、Ilex (Aquifoliaceae)、Morella (Myricaceae) 和 Pimenta (Myrtaceae)。最后，我们报告了来自亚马逊地区的第一个锌超富集植物 Rinorea multivenosa (Violaceae)。识别能够积累大量金属的物种将有助于支持植物技术的发展，以限制世界该地区土壤金属污染的影响。