Abstract
A promising solution for phytoremediation of metal-contaminated soils is to use plants in combination with phosphate-solubilizing bacteria (PSB). In this study, we subjected to isolate PSB from paddy soil and investigate their ability in improving the phytoremediation of lead (Pb2+) by a weed plant (Echinochloa colona (L.) Link) as well as in promoting the growth of E. colona under Pb stress condition. Total 06 PSB (labeled from TB01 to TB06) were isolated and the TB04 showed the strongest phosphate-solubilizing activity with the highest values of phosphorus solubilization index (PSI = 7.13) obtained from Ca3(PO4)2. Especially, the phosphorus solubilizing ability of the TB04 strain was not affected by the high Pb2+concentration. The TB04 strain was identified as Pseudomonas putida Trevisan, 1889 (accession number FJ976601.1). Furthermore, E. colona inoculated with TB04 strain significantly increased the phytoremediation efficiency of Pb from Pb-contaminated soil and the growth was enhanced clearly. These results suggest that the TB04 strain could potentially use as an inoculant in combination with E. colona to construct novel constructed wetlands for phytoremediation of metal-contaminated soil.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
