Using elevated CO2 to increase the biomass of a Sorghum vulgare × Sorghum vulgare var. sudanense hybrid and Trifolium pratense L. and to trigger hyperaccumulation of cesium

摘要: The most important challenge to use phytoremediation is how improve its efficiency by increasing the accumulation of metals in plants, or improving key plant biological traits that should enhance metal uptake. In this paper, we used open-top chambers investigate effects elevated CO2 (860 microL L(-1)) on biomass and Cs uptake a Sorghum vulgare x var. sudanense hybrid Trifolium pratense L. growing soils spiked with various levels cesium (0, 300, 1500 3000 mg kg(-1)). results showed not only increased aboveground species 32-111%, 8-11%, respectively, compared ambient treatment, but also caused more (up 73%) than 43%). It was speculated increase improvement ability at could be related lowered soil pH values, changes number kind microorganisms rhizospheres two tested species. This first report link among CO2, hyperaccumulation