Pathway for Biodegrading Nodularin (NOD) by Sphingopyxis sp. USTB-05

Pathway for Biodegrading Nodularin (NOD) by Sphingopyxis sp. USTB-05.

Nodularin (NOD) is greatly produced by Nodularia spumigena and released into the environment when toxic cyanobacterial blooms happened in natural water body, which is seriously harmful to human and animals. The promising bacterial strain of Sphingopyxis sp. USTB-05 was found to have an ability in biodegrading NOD. Initially, 11.6 mg/L of NOD could be completely eliminated within 72 h by whole c...

Pathway for Biodegrading Microcystin-YR by Sphingopyxis sp. USTB-05

Harmful cyanobacterial blooms in waters have become a global environmental problem, this mainly due to the production and release of various microalgal toxins, in which microcystins (MCs) are distributed widely. Here, we focused on the study of a typical form of microcystins called microcystin-YR (MC-YR). It was found that initial 14.8 mg/L of MC-YR could be completely eliminated within 10 hr b...

Microbial biodegradation of microcystin-RR by bacterium Sphingopyxis sp. USTB-05.

A strain, USTB-05, isolated from Lake Dianchi, China, degraded the cyanobacterial toxin microcystin-RR (MC-RR) at the rate of 16.7 mg/L per day. Analysis of 16S rDNA sequence showed that the strain was Sphingopyxis sp. Enzymatic degradation pathways for MC-RR by Sphingopyxis sp. USTB-05 were identified. Adda-Arg peptide bond of MC-RR was cleaved and then a hydrogen and a hydroxyl were combined ...

Sphingopyxis soli sp. nov., isolated from landfill soil.

A Gram-negative, aerobic, rod-shaped, motile, oxidase-positive, catalase-negative bacterium, designated strain BL03(T), was isolated from landfill soil in Pohang, Republic of Korea. Colonies on Luria-Bertani agar plates were yellow. The strain grew in the presence of 0-3 % (w/v) NaCl, at 15-42 degrees C and at pH 5.0-9.5. The predominant ubiquinone was Q-10, and the major cellular fatty acids w...

optimization of cultural conditions for production of chitinase by aeromonas sp. zd-05