Extensive variation in cadmium tolerance and accumulation among populations of Chamaecrista fasciculata.

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ID: 15809
2013
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Abstract
Plant populations may vary substantially in their tolerance for and accumulation of heavy metals, and assessment of this variability is important when selecting species to use in restoration or phytoremediation projects. We examined the population variation in cadmium tolerance and accumulation in a leguminous pioneer species native to the eastern United States, the partridge pea (Chamaecrista fasciculata). We assayed growth, reproduction and patterns of cadmium accumulation in six populations of C. fasciculata grown on a range of cadmium-contaminated soils. In general, C. fasciculata exhibited tolerance in low to moderate soil cadmium concentrations. Both tolerance and accumulation patterns varied across populations. C. fasciculata exhibited many characteristics of a hyperaccumulator species, with high cadmium uptake in shoots and roots. However, cadmium was excluded from extrafloral nectar. As a legume with tolerance for moderate cadmium contamination, C. fasciculata has potential for phytoremediation. However, our findings also indicate the importance of considering the effects of genetic variation on plant performance when screening plant populations for utilization in remediation and restoration activities. Also, there is potential for cadmium contamination to affect other species through contamination of leaves, fruits, flowers, pollen and root nodules.
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henson2013extensiveplos Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Henson, Tessa M;Cory, Wendy;Rutter, Matthew T;
Journal PloS one
Year 2013
DOI
DOI not found
URL
http://europepmc.org/articles/PMC3646754?pdf=render
Keywords Keywords not found

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