Journal
JOURNAL OF PLANT NUTRITION
Volume 36, Issue 11, Pages 1708-1718Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01904167.2013.810247
Keywords
Ca; Mg quotient; excluder plant; nickel; Pistacia atlantica; serpentine soils; tolerance
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Funding
- Graduate School of the University of Isfahan
- Plant Stress Center of Excellence
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We selected two serpentine (ultramafic) and non-serpentine populations of P. atlantica and a cultivar of P. vera cv. Badami', to compare their responses to two growth limiting factors of serpentine soils: low calcium (Ca)/ magnesium (Mg) quotients and high concentrations of nickel (Ni). A solution culture system using perlite as a neutral substrate was used for growing the plants. Growth and elemental composition of plants then were analyzed. All populations/species proved to be excluders of Ni but, interestingly the excluding ability of P. vera to prevent translocation of Ni from root to shoot was higher than that of both populations of P. atlantica. The plants of serpentine population of P. atlantica were more resistant to lower Ca/Mg quotients and higher concentrations of Ni. We suggest that the growth and exclusion responses of the tested plants to Ca/Mg quotients and Ni result from adaptations to their natural substrates, ultramafic or saline soils.
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