Project description:G. uraniireducens was isolated from a subsurface site in Rifle, CO undergoing in situ uranium bioremediation. Sediments from the Rifle site were heat-sterilized, amended with acetate to simulate in situ bioremediation conditions, and inoculated with G. uraniireducens. Gene transcript abundance in these cells using sediment Fe(III) and Mn(IV) oxides as the electron acceptor were compared with transcript levels in cells grown with fumarate as the electron acceptor. Additional comparisons were made between cells grown on synthetic Fe(III) or Mn(IV) oxides and cells grown on fumarate.
Project description:G. uraniireducens was isolated from a subsurface site in Rifle, CO undergoing in situ uranium bioremediation. Sediments from the Rifle site were heat-sterilized, amended with acetate to simulate in situ bioremediation conditions, and inoculated with G. uraniireducens. Gene transcript abundance in these cells using sediment Fe(III) and Mn(IV) oxides as the electron acceptor were compared with transcript levels in cells grown with fumarate as the electron acceptor. Additional comparisons were made between cells grown on synthetic Fe(III) or Mn(IV) oxides and cells grown on fumarate. 3 biological replicates hybridized in duplicate
Project description:Microarray analysis of Streptococcus pneumoniae TIGR4 transcriptome in response to manganese as the transcriptome changes in response to intracellular manganese accumulation via a mutation in sp1552/mntE a manganese efflux protein. Investigating role of manganese efflux and accumulation in S. pneumoniae: 3 TIGR4 in ThyB vs. TIGR4 in Mn and 3 TIGR4 in Mn vs mntE1 in Mn replicate 3
Project description:In order to identify possible RNAs regulated by small RNA NsiR3 we have analyzed the responses to nitrogen removal in a mutant lacking nsiR3 (ΔnsiR3). RNA samples were isolated from cells growing in the presence of combined nitrogen (ammonium) or after 8 h of nitrogen deprivation.
