Enhanced accumulation of Cd(sup)2+ by a mesorhizobium sp. transformed with a gene from Arabidopsis thaliana coding for phytochelatin synthase

Article Abstract:

Research shows that cadmium chloride activates phytochelatin synthase leading to the induction of synthesis of photochelatin in Mesorhizobium sp. Also, bacterial cell containing photochelatin accumulate cadmium. Furthermore, phytochelatin synthase gene transfer to M. huakuii subsepecies rengei B3 enhances their ability to bind cadmium to about 9- to 19-fold and 1.5-fold in nodules following symbiotic association with Arabidopsis thaliana.

Symbiosis, Enzyme activation, Phytochemicals

Bacteria metabolically engineered for enhanced phytochelatin production and cadmium accumulation

Article Abstract:

A variant of [alpha]-glutamylcysteine synthetase (GSH) desensitized to respond restriction by GSH (11) was overexpressed in Escherichia coli and Cadmium transporter was expressed with phytochelatin from schizosaccharomyces pombe (spPCS). Results conclude that the overexpression of PCS and GshI in E.coli improved the intracellular and the prior Cadmium accumulation.

All Other Miscellaneous Chemical Product and Preparation Manufacturing, Chelating Agents, Chemical preparations, not elsewhere classified, Escherichia coli, Nutrient interactions, Properties, Structure

Characterization of acetic acid bacteria in traditional acetic acid fermentation of rice vinegar (komesu) and unpolished rice vinegar (kurosu) produced in Japan

Article Abstract:

Researchers found that 99% of the acetic acid bacteria strains in the fermentation of rice to produce vinegar in Japan are Acetobacter pasteurianus. This shows that the bacterium has spontaneously established itself in almost pure culture during a century of vinegar production.

Vinegar, Industrial microorganisms, Rice vinegar, Acetic fermentation, Rice products