Simultaneous Cr(VI) reduction and Zn(II) biosorption by Stenotrophomonas sp. and constitutive expression of related genes.

Objectives: To investigate simultaneous Cr(VI) reduction and Zn(II) biosorption by a microorganism.

Results: A new isolate, Stenotrophomonas sp. TD3, simultaneously reduced Cr(VI) and achieved Zn(II) biosorption.

[The expression of gene related to salt tolerance from Sinorhizobium meliloti 042BM in Escherichia coli and purification of its fusion protein].

A 1.9kb DNA fragment related to salt tolerance of S. meliloti strain 042BM containing two open reading frames were obtained by PCR amplification and ligated into shuttle vector pBBR1-MCS2.