Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette, France.
Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d,Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France.
Metallomics. 2021 Aug 19;13(8). doi: 10.1093/mtomcs/mfab045.
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.
植物已经发展出多种策略来吸收和储存必需的金属，以便在包括矿化土壤在内的各种类型的土壤中定殖。然而，我们对植物物种积累金属的能力的了解在整个植物界仍然是零散的。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新热带植物群中广泛多样性物种的金属浓度。我们总共筛选了来自巴黎和古巴标本馆的超过 11000 个标本，代表了约 5000 个物种。我们的研究提供了一个新热带植物群中积累金属（如锰、锌和镍）的大量概述。我们报告了来自古巴的 30 种新的镍超积累物种，包括在科纳拉科、Melastomataceae、Polygonaceae、檀香科和荨麻科中的首次记录。我们还在这个世界的这个地区首次发现了可以被认为是锰超积累物的物种，包括来自石蒜科的 Lomatia、Melastomataceae 的 Calycogonium、Aquifoliaceae 的 Ilex、Myricaceae 的 Morella 和 Myrtaceae 的 Pimenta。最后，我们报告了来自亚马逊地区的锌超积累物 Rinorea multivenosa（Violaceae）。鉴定出能够积累大量金属的物种将成为支持发展植物修复技术的重要手段，以限制该地区土壤金属污染的影响。
