Field Studies on the Effect of Bioaugmentation with Bacillus amyloliquefaciens FZB42 on Plant Accumulation of Rare Earth Elements and Selected Trace Elements

Minerals

Johann Haupt¹  Andreas Golde¹  Martin Kofi Mensah²  Nazia Zaffar³  Hermann Heilmeier³  God’sfavour Ikwuka³  Melvice Ngalle Epede³  Precious Uchenna Okoroafor³  Oliver Wiche³ 

[1] Fachschulzentrum Freiberg-Zug, Hauptstraße 150, 09599 Freiberg, Germany;Institute of Mining and Special Construction Engineering, Technische Universität Bergakademie Freiberg, Gustav-Zeuner-Straße 1a, 09599 Freiberg, Germany;Interdisciplinary Environmental Research Centre, Institute of Biosciences, Technische Universität Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany;

关键词: bioaugmentation;    Bacillus amyloliquefaciens;    RhizoVital^®42;    bioavailability;    phytoextraction;    trace elements;   

DOI  :  10.3390/min12040409

来源: DOAJ

【 摘 要 】

This study is an investigation of the effect of soil bioaugmentation (inoculation) on a field scale with the commercially available product RhizoVital^®42, containing Bacillus amyloliquefaciens FZB4, on element bioavailability, plant biomass production, as well as accumulation of rare earth elements (REEs), germanium, and selected trace elements. Zea mays and Helianthus annuus were selected as test plants. Post-harvest, results showed inoculation increased biomass production of Z. mays and H. annuus by 24% and 26%, albeit insignificant at p ≤ 0.05. Bioaugmentation enhanced Z. mays shoot content of P, Cd, and Ge by percentages between 73% and 80% (significant only for Ge) and decreased shoot content of REET, Pb, and Cu by 28%, 35%, and 59%, respectively. For H. annuus grown on bioaugmented soil, shoot content of Ca, Cu, Ge, REET, and Pb increased by over 40%, with a negligible decrease observed for Cd. Summarily, results suggest that bioaugmentation with Bacillus amyloliquefaciens FZB42 could enhance biomass production, increase soil element bioavailability enhance, and increase or reduce plant accumulation of target elements. Additionally, differences in P use efficiency could influence bioaugmentation effects on P accumulation.

【 授权许可】

Unknown