Review: The role of atomic spectrometry in plant science

被引:58
作者
Husted, Soren [1 ]
Persson, Daniel P. [1 ]
Laursen, Kristian H. [1 ]
Hansen, Thomas H. [1 ]
Pedas, Pai [1 ]
Schiller, Michaela [1 ]
Hegelund, Josefine N. [1 ]
Schjoerring, Jan K. [1 ]
机构
[1] Univ Copenhagen, Fac Life Sci, Dept Agr & Ecol, Plant & Soil Sci Lab, DK-1871 Frederiksberg C, Denmark
关键词
INDUCTIVELY-COUPLED PLASMA; HPLC-ICP-MS; HYPERACCUMULATOR THLASPI-CAERULESCENS; PERFORMANCE LIQUID-CHROMATOGRAPHY; SIZE-EXCLUSION HPLC; ARSENIC-PHYTOCHELATIN COMPLEXES; BIOLOGICAL REFERENCE MATERIALS; NICOTIANAMINE SYNTHASE GENES; RAY-ABSORPTION SPECTROSCOPY; TRACE-ELEMENT DETERMINATION;
D O I
10.1039/c0ja00058b
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Inductively coupled plasma-mass spectrometry (ICP-MS) is the state-of-the-art technique for multi-elemental analysis of plant tissue. It provides a powerful tool in functional genomics, linking altered elemental profiles of mutants with gene expression and function. In addition, with its unmatched sensitivity, ICP-MS enables characterization of the substrate specificity and regulation of membrane transport proteins. Digestion of plant tissue has traditionally represented a bottleneck due to the low capacity of commercially available equipment. However, recent developments in micro-scaled digestion, combined with semi-quantitative analysis and chemometrics, have enabled high-throughput multi-elemental profiling and multivariate classification of large sample sets, thereby supporting a range of new applications in molecular breeding, quality assessment and authenticity testing of plants. Novel hyphenated techniques based on liquid chromatography and ICP-MS (LC-ICP-MS) have significantly improved the understanding of elemental species and their importance for e. g. the bioactivity of metals in plants. Development of procedures for sample pre-treatment, extraction and multi-dimensional separation now allows characterization of important metallo-biomolecules in plants, such as the coordination complexes of phytochelatins, metallothioneins, nicotianamine and inositol phosphates. These are key ligands involved in ion homeostasis, translocation and long-term storage of elements. Much emphasis has also been given to studies of covalently bound Se and As species, primarily due to their impact on human health. LC-ICP-MS has extensively been complemented by molecular mass spectrometry for structural information of biologically relevant species. This review covers the most recent developments in multi-elemental analysis (Part A) and speciation analysis (Part B) in plant science. A number of relevant cases are presented in order to demonstrate how the analytical developments have unravelled the functional roles of elements in plants science. These cases show that ICP-MS is an essential technology in plant metallomic platforms.
引用
收藏
页码:52 / 79
页数:28
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