[Association of bacterial diversity in city area of Nanming river with environmental factors].

Objective: The aim of this study was to analyze the bacterial diversity of urban section of Nanming river as well as to study relationship between the bacterial diversity and environmental factors.

Methods: The high throughput sequencing on PCR-amplified 16S rDNA V4 fragments was used to determine the bacterial diversity of samples from five sites of Nanming river. The ordination technique of redundancy analysis was used to analyze the effects of the environmental factors on bacterial community composition.

CeCaFDB: a curated database for the documentation, visualization and comparative analysis of central carbon metabolic flux distributions explored by 13C-fluxomics.

The Central Carbon Metabolic Flux Database (CeCaFDB, available at http://www.cecafdb.org) is a manually curated, multipurpose and open-access database for the documentation, visualization and comparative analysis of the quantitative flux results of central carbon metabolism among microbes and animal cells.