Impact of Urea Addition and Rhizobium Inoculation on Plant Resistance in Metal Contaminated Soil.

ABSTRACT: Legume-rhizobium symbiosis has been heavily investigated for their potential to enhance plant metal resistance in contaminated soil. However, the extent to which plant resistance is associated with the nitrogen (N) supply in symbiont is still uncertain. This study investigates the effect of urea or/and rhizobium (Sinorhizobium meliloti) application on the growth of Medicago sativa and resistance in metals contaminated soil (mainly with Cu). The results show that Cu uptake in plant shoots increased by 41.7%, 69%, and 89.3% with urea treatment, rhizobium inoculation, and their combined treatment, respectively, compared to the control group level. In plant roots, the corresponding values were 1.9-, 1.7-, and 1.5-fold higher than the control group values, respectively. Statistica

SUBMITTER: Shen G 

PROVIDER: S-EPMC6603927 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature