Nickel hyperaccumulation in Orthion and Mayanaea (Violaceae) from Mesoamerica

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-29 DOI:10.1111/1440-1703.12504

Dulce Montserrat Navarrete Gutiérrez, A. Joseph Pollard, Haley P. Disinger, Antony van der Ent, Michel Cathelineau, Marie‐Noëlle Pons, Jesús Axayacatl Cuevas Sánchez, Teodoro Gómez Hernández, Guillaume Echevarria

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引用次数: 0

Abstract

Research on metal hyperaccumulating plants has concentrated on New Caledonia, Brazil, Cuba, the Mediterranean basin, and southeastern Asia, while other regions remain under studied. This work used a systematic approach in the targeted search for new hyperaccumulators in Mesoamerica, with a focus on characterizing nickel (Ni) hyperaccumulation in six species of Orthion and the monotypic genus Mayanaea (Violaceae), to complement earlier global studies on the related genus Hybanthus. We screened major herbarium collections, using x‐ray fluorescence (XRF) analysis to measure metal concentrations in specimens of Orthion and Mayanaea ranging from Mexico to Nicaragua. In addition, fresh samples collected in Mexico were analyzed with associated rhizosphere soils. The results indicated that all species of Orthion and Mayanaea are able to hyperaccumulate Ni. Ni concentration ranges in leaves of herbarium specimens were (in mg kg−1 dry weight): Orthion guatemalense (380–5100), O. malpighiifolium (24–5620), O. montanum (1620–5850), O. oblanceolatum (60–1440), O. subsessile (450–18,700), and O. veracruzense (22–3660). The available specimen of Mayanaea caudata had foliar Ni concentration of 5390 mg kg−1. Field‐collected samples of O. veracruzense and O. subsessile had similar Ni concentrations to herbarium specimens. Additionally, many Orthion species were facultative hyperaccumulators of cobalt. This is the first report of Ni hyperaccumulation in Violaceae from the Western Hemisphere. Ni hyperaccumulation in Orthion and Mayanaea is consistent with published phylogenies showing that they belong to a clade which also includes strong hyperaccumulators in the genus Hybanthus from Australia and New Caledonia. Orthion subsessile has suitable traits to become a potential crop for agromining of Ni.

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中美洲 Orthion 和 Mayanaea（堇菜科）对镍的过度积累

对金属高积累植物的研究主要集中在新喀里多尼亚、巴西、古巴、地中海盆地和亚洲东南部，而对其他地区的研究仍然不足。本研究采用系统方法，有针对性地在中美洲寻找新的高积累植物，重点研究六种 Orthion 和单型属 Mayanaea（堇菜科）的镍（Ni）高积累特性，以补充早先对相关属 Hybanthus 的全球研究。我们筛选了主要的标本馆藏品，使用 X 射线荧光 (XRF) 分析方法测量了从墨西哥到尼加拉瓜的 Orthion 和 Mayanaea 标本中的金属浓度。此外，还对在墨西哥采集的新鲜样本和相关根瘤土壤进行了分析。结果表明，Orthion 和 Mayanaea 的所有物种都能过度积累 Ni。标本馆标本叶片中的镍浓度范围如下（单位：毫克/千克-1 干重）：O. oblanceolatum（60-1440）、O. subsessile（450-18700）和 O. veracruzense（22-3660）。Mayanaea caudata 的现有样本叶面镍浓度为 5390 毫克/千克。veracruzense 和 O. subsessile 的镍浓度与标本馆标本相似。此外，许多 Orthion 物种都是钴的面生高积累植物。这是首次报道西半球堇菜科植物的镍超积累现象。Orthion和Mayanaea的镍高积累与已发表的系统进化论一致，系统进化论显示它们属于一个支系，该支系还包括澳大利亚和新喀里多尼亚的Hybanthus属中的强高积累植物。Orthion subsessile具有合适的性状，可以成为一种潜在的镍农作物。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.