The influence of phosphorous and nitrogen content in soil on the symbiosis ability of arbuscular mycorrhizas fungi in the host plant root, and the effect of lead removal from soil by maize

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Abstract

The study was conducted to investigate how the nutrient factor in soil (Phosphorous and Nitrogen) influence on the symbiosis ability of arbuscular mycorrhizas fungi to the host plant, and the effect of lead (Pb) removal from soil by maize. The results showed that, AM fungi were inhibited to penetrate into maize root when they were cultured in rich nutrient soil. In the soil with low concentration of nitrogen and phosphorus nutrient (formula TN1), the density of AM fungi was three times higher than this in high nutrient soil (formula TN8), and the amount of Pb accumulate  in  maize  biomass  of  TN1  was  also  the  highest  in  all  formulas.  However,  the treatment  effect  of  TN1  formula  did  not  get  the  optimal  value,  because  the  total  amount  of biomass was the lowest in comparison with the otherformulas. Formula TN5 gained the optimal value of treatment process, since they could remove the highest amount of  lead out from the soil. The concentration of phosphorus and nitrogen in formula TN5 were 752.5 ppm and 87.6 ppm, so they did not prevent AM fungi from inoculating maize root, and they were not too low for maize to achieve high biomass.

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Published
2014-10-21
Section
Articles