Citation:
M.R. Ghalamboran, J.J Ramsden, Viability of Bradyrhizobium japanicum on soybean seeds enhanced by magnetite
nanoparticles during desiccation, World Academy of Science, Engineering and Technology, Volume 63, 2010, Pages 198-203.
Abstract:
The aim of this study was to investigate whether magnetite nanoparticles affect
the viability of Bradyrhizobium japanicum cells residing on the surface of
soybean seeds during desiccation. Different concentrations of nanoparticles
suspended in liquid medium, mixed with and adhering to Bradyrhizobium japanicum,
were investigated at two temperatures, using both soybean seeds and glass beads
as surrogates. Statistical design was a complete randomized block (CRB) in a
factorial 6×2×2×6 experimental arrangement with four replications. The most
important variable was the viability of Bradyrhizobium on the surface of the
seeds. The nanoparticles increased Bradyrhizobium viability and inoculated seeds
stored at low temperature had greater viability when nanoparticles had been
added. At the optimum nanoparticle concentration, 50% bacterium viability on the
seeds was retained after 5 days at 4ºC. Possible explanations for the observed
effects are prop