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biodiversity of mineral nutrient and trace element accumulation in arabidopsis thaliana生物多样性的矿物养分和微量元素积累在拟南芥.pdf

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biodiversity of mineral nutrient and trace element accumulation in arabidopsis thaliana生物多样性的矿物养分和微量元素积累在拟南芥

Biodiversity of Mineral Nutrient and Trace Element Accumulation in Arabidopsis thaliana 1,2 3 2 2 2 Ivan Baxter *, Christian Hermans , Brett Lahner , Elena Yakubova , Marina Tikhonova , Nathalie Verbruggen3, Dai-yin Chao2,4, David E. Salt2,4 1 Agricultural Research Service Plant Genetics Research Unit, Donald Danforth Plant Science Center, United States Department of Agriculture, St. Louis, Missouri, United States of America, 2 Center for Plant Stress Physiology, Purdue University, West Lafayette, Indiana, United States of America, 3 Laboratory of Plant Physiology and ´ Molecular Genetics, Universite Libre de Bruxelles, Brussels, Belgium, 4 Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, Scotland, United Kingdom Abstract In order to grow on soils that vary widely in chemical composition, plants have evolved mechanisms for regulating the elemental composition of their tissues to balance the mineral nutrient and trace element bioavailability in the soil with the requirements of the plant for growth and development. The biodiversity that exists within a species can be utilized to investigate how regulatory mechanisms of individual elements interact and to identify genes important for these processes. We analyzed the elemental composition (ionome) of a set of 96 wild accessions of the genetic model plant Arabidopsis thaliana grown in hydroponic culture and soil using inductively coupled plasma mass spectrometry (ICP-MS). The concentrations of 17–19 elements were analyzed in roots and leaves from plants grown hydroponically, and leaves and seeds from plants grown in artificial soil