To investigate the mechanism of triphenyltin(TPhT)biodegradation through proteomic and ions release
the biodegradation of TPhT with concentration from 0.1 to 10 mg·L-1 by Klebsiella pneumoniae
and the physiological responses and proteomic changes of K.pneumoniae to TPhT exposure in mineral salts medium(MSM)and deionized distilled water(DDW)were studied.Experimental results showed that K.pneumonia could effectively degrade TPhT to diphenyltin(DPhT)
monophenyltin(MPhT)and tin(Sn)
and increase TPhT removal rate from 46.7% to 73.6% and from 25.1% to 87.0% in MSM and DDW
respectively.In this process
TPhT activated membrane permeability and triggered cell membrane damage
which increased the release of intracellular ions and caused part of cell death. Moreover
the exposure of K.pneumonia to TPhT induced differential expression of some proteins that were responsible for proteolysis