Nickel hyperaccumulation in Antidesma montis-silam: from herbarium discovery to collection in the native habitat
Nickel hyperaccumulation in Antidesma montis-silam: from herbarium discovery to collection in the native habitat
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DOI：
10.1007/s11284-017-1542-4
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发表时间：
2018-05-01
影响因子：
2
通讯作者：
van der Ent, Antony
中科院分区：
文献类型：
--
作者：
Nkrumah, Philip Nti;Echevarria, Guillaume;van der Ent, Antony
大多数镍超富集植物种类是通过基于二甲基乙二肟的田间点试验筛选而发现的。最近，便携式 X 射线荧光光谱仪器的使用使得对现有植物标本馆藏品进行无损分析成为可能。鉴于全球叶下珠科拥有数量最多的超积累植物，我们对来自该科的所有可用标本（包括马来西亚沙巴森林研究中心植物标本馆的物种属 Antidesma）进行了分析。研究结果揭示了Antidesma属中9个新的锰超富集植物，其中包括Antidesma puncticulatum，锰浓度高达46,400 A mu g g(-1)。在这项研究之前，沙巴仅记录了一个锰超富集植物。本研究首次在Antidesma属中发现了镍超富集植物物种（四种），其中Antidesma montis-silam的浓度高达32,700 A mu g g(-1)。对原生栖息地的 Antidesma montis-silam 植物材料的进一步收集和分析证实了叶面镍的高浓度。 Antidesma montis-silam 的高镍超富集特性和表面上快速的生长速度预示着其在农业采矿技术中的应用潜力。 Antidesma 属的一些物种表现出锰和镍的共积累。该案例研究展示了植物标本室 XRF 筛选如何发现具有独特特性的类群。
The majority of nickel hyperaccumulator plant species have been discovered by screening using a field spot test based on dimethylglyoxime. Recently, the use of a portable X-ray fluorescence spectroscopy instruments has enabled non-destructive analyses of existing herbarium collections. Given that the family Phyllanthaceae globally has the greatest numbers of hyperaccumulators, all available specimens from this family, including the speciose genus Antidesma, at the Forest Research Centre Herbarium in Sabah, Malaysia, were analysed. The results reveal 9 new manganese hyperaccumulators in the genus Antidesma, including Antidesma puncticulatum, with manganese concentrations reaching up to 46,400 A mu g g(-1). Prior to this study, only one manganese hyperaccumulator had been recorded in Sabah. The present study is the first to discover nickel hyperaccumulator plant species (four species) in the genus Antidesma, including Antidesma montis-silam with concentrations reaching up to 32,700 A mu g g(-1). Further collection and analyses of plant material of Antidesma montis-silam in the native habitat confirmed the high foliar nickel concentrations. The high nickel hyperaccumulating characteristic and ostensibly fast growth rate of Antidesma montis-silam infer potential for use in agromining technology. Some species in the genus Antidesma exhibit co-accumulation of manganese and nickel. This case-study shows how herbarium XRF screening can lead to discovery of taxa with unique properties.