[Current researches in microbial remediation of arsenic pollution].

Along with the rapid development of industries, arsenic contamination emerges as one of the world's most urgent environmental problems, especially for the developing countries. Microbial remediation of arsenic polluted environments is a key technique in practice, four aspects, i.e.

Impact of phenanthrene on organic acids secretion and accumulation by perennial ryegrass, Lolium perenne L., root.

A solution culture experiment was performed to investigate the impact of phenanthrene (PHE) on organic acids secretion and accumulation by Lolium perenne L. root. Data showed that, oxalic acid was the dominant composition of organic acids in root and root exudates.