Phosphate-solubilizing microorganisms to enhance phytoremediation of excess phosphorus pollution in phosphate mining wasteland soil. Issue 3 (3rd July 2021)

• Record Type: Journal Article
• Authors: Guo, Shuyu; Feng, Bo; Xiao, Chunqiao; Wang, Qi; Chi, Ruan
• Is Part Of: Bioremediation journal. Volume 25:Issue 3(2021)
• Page Start: 271
• Page End: 281
• Publication Date: 2021-07-03
• Subjects: Excess phosphorus (P) -- Lactuca versicolor -- Lolium perenne L. -- phosphate mining wastelands -- phosphate-solubilizing microorganisms (PSM -- phytoremediation); Bioremediation -- Periodicals; 628.5
• DOI: 10.1080/10889868.2021.1884528
• Languages: English
• ISSNs: 1088-9868

Abstract

Abstract: Remediation using plant-microbe interactions is an efficient and cost-effective technique. However, few studies have reported their effects in phosphate mining wastelands. In this study, two native phosphate-solubilizing microorganisms (PSM) ( Trichoderma asperellum LZ1 and Serratia sp. LX2) and two native plants ( Lolium perenne L. and Lactuca versicolor ) were used to remediate excess phosphorus (P) contamination in phosphate mining wasteland soil. In pot experiments, PSM was found to increase P availability by reducing soil pH. The inoculation of strain LZ1 and LX2 significantly increased the total biomass of L. perenne L. by 41.73%, 6.27%, and 49.26%, respectively. Similarly, L. versicolor biomass also increased by 17.51%, 11.67%, and 41.16%, respectively. In addition, the root, shoot length, and chlorophyll content of L. perenne L. and L. versicolor were also significantly higher than those of the treatments inoculated without PSM. In PSM-inoculated soils, the P accumulation in L. perenne L. and L. versicolor was 11.71 and 5.54 mg/pot, respectively. The findings in this study showed that T. asperellum LZ1 and Serratia sp. LX2 could effectively promote the growth of L. perenne L. and L. versicolor, and increase the P accumulation in plants, which would be beneficial to the phytoremediation of excess P contamination in phosphate mining wasteland.