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      Fertilizer Impacts on Cadmium Availability in Agricultural Soils and Crops

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      Human and Ecological Risk Assessment: An International Journal
      Informa UK Limited

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          Solid-Solution Partitioning of Metals in Contaminated Soils:  Dependence on pH, Total Metal Burden, and Organic Matter

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            Role of inorganic and organic soil amendments on immobilisation and phytoavailability of heavy metals: a review involving specific case studies

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              Cadmium accumulation and buffering of cadmium-induced stress by arbuscular mycorrhiza in three Pisum sativum L. genotypes.

              The role of arbuscular mycorrhiza in reducing Cd stress was investigated in three genotypes of Pisum sativum L. (cv. Frisson, VIR4788, VIR7128), grown in soil/sand pot cultures in the presence and absence of 2-3 mg kg(-1) bioavailable Cd, and inoculated or not with the arbuscular mycorrhizal fungus Glomus intraradices. Shoot, root and pod biomass were decreased by Cd in non-mycorrhizal plants. The presence of mycorrhiza attenuated the negative effect of Cd so that shoot biomass and activity of photosystem II, based on chlorophyll a fluorescence, were not significantly different between mycorrhizal plants growing in the presence or absence of the heavy metal (HM). Total P concentrations were not significantly different between mycorrhizal and non-mycorrhizal plants treated with Cd. From 20-50-fold more Cd accumulated in roots than in shoots of Cd-treated plants, and overall levels were comparable to other metal-accumulating plants. Genetic variability in Cd accumulation existed between the pea genotypes. Concentration of the HM was lowest in roots of VIR4788 and in pods of VIR4788 and VIR7128. G. intraradices inoculation decreased Cd accumulation in roots and pods of cv. Frisson, whilst high concentrations were maintained in roots and pods of mycorrhizal VIR7128. Shoot concentrations of Cd increased in mycorrhizal cv. Frisson and VIR4788. Sequestration of Cd in root cell walls and/or cytoplasm, measured by EDS/SEM, was comparable between non-mycorrhizal pea genotypes but considerably decreased in mycorrhizal cv. Frisson and VIR7128. Possible mechanisms for mycorrhiza buffering of Cd-induced stress in the pea genotypes are discussed.
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                Author and article information

                Journal
                Human and Ecological Risk Assessment: An International Journal
                Human and Ecological Risk Assessment: An International Journal
                Informa UK Limited
                1080-7039
                1549-7860
                April 10 2008
                April 10 2008
                : 14
                : 2
                : 210-228
                Article
                10.1080/10807030801934895
                2832f6bc-b71d-4572-a429-ee40a13f4740
                © 2008
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