Effect of Pseudomonas fluorescens and pyoverdine on the phytoextraction of cesium by red clover in soil pots and hydroponics.

Environmental Science and Pollution Research International
Alice HazotteThierry Lebeau

Abstract

With the aim of improving the phytoextraction rate of cesium (Cs), the effect of Pseudomonas fluorescens ATCC 17400 and its siderophore pyoverdine (PVD) on the uptake of Cs by red clover was studied in soil pots. This work also provides a mechanistic understanding of the Cs-bacteria (or PVD)-illite-plant interactions by using a simplified experimental design, i.e., hydroponics with either Cs in solution or Cs-spiked illite in suspension. For soil spiked with 11.2 mmol kg-1 (1480 mg kg-1) of Cs, 0.43% of total Cs was taken up by red clover in 12 days (119 μmol g-1 (16 mg g-1) of Cs dry matter in roots and 40 μmol g-1 (5 mg g-1) in shoots). In hydroponics with Cs in solution (0.1 mmol L-1 or 13 mg L-1), 75% of Cs was taken up vs. only 0.86% with Cs-spiked illite suspension. P. fluorescens and PVD did not increase Cs concentrations in aboveground parts and roots of red clover and even decreased them. The damaging effect of PVD on red clover growth was demonstrated with the biomass yielding 66% of the control in soil pots (and 100% mortality after 12 days of exposition) and only 56% in hydroponics (78% with illite in suspension). Nonetheless, PVD and, to a lesser extent, P. fluorescens increased the translocation factor up to a fac...Continue Reading

References

May 20, 2000·Chemosphere·Y G Zhu, G Shaw
Jan 1, 1997·Environmental Pollution·M R Broadley, N J Willey
Oct 7, 2004·Journal of Environmental Radioactivity·Mykhaylo M VinichukIngvar Nilsson
Jul 29, 2005·Environmental Science & Technology·Laura A WendlingMarkus Flury
Nov 6, 2007·Environmental Pollution·Thierry LebeauKarine Jézéquel
Aug 8, 2009·Trends in Microbiology·Stéphane UrozPascale Frey-Klett
Jan 2, 2010·Trends in Biotechnology·Mani RajkumarHelena Freitas
Mar 27, 2013·Journal of Environmental Radioactivity·Akira TakedaShun'ichi Hisamatsu
May 7, 2013·Soil Biology & Biochemistry·Angela SessitschMarkus Puschenreiter
Oct 4, 2014·Environmental Science and Pollution Research International·Sunita SharmaV K Manchanda
Nov 26, 2015·Environmental Science and Pollution Research International·Dahu DingTianming Cai

❮ Previous
Next ❯

Citations

Jun 20, 2019·Proceedings. Biological Sciences·Elze HesseAngus Buckling
May 1, 2019·Radiation Protection Dosimetry·T KimuraM Yoneda
Dec 8, 2021·The Science of the Total Environment·D'Incau EmmelineLebeau Thierry

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofilm & Infectious Disease

Biofilm formation is a key virulence factor for a wide range of microorganisms that cause chronic infections.Here is the latest research on biofilm and infectious diseases.

Bioremediation (ASM)

Bioremediation is the treatment and removal of harmful pollutants or contaminants through the use of microorganisms. Discover the latest research here.