Effects of river water quality on bacterioplankton and pathogens communities
Aiming at the differential response of bacterioplankton and pathogens to river water quality,the reach of the main stream of the Nujiang River with less human interference was selected as the research area.16S rRNA high-throughput sequencing technology was used to analyze the effects of main water quality factors on the community structure and function of bacterioplankton and pathogens.The results showed that the water quality of the main stream of the Nujiang River was generally good,and the concentration of ammonia nitrogen and total phosphorus reached the standard of ClassⅢand ClassⅡrespectively.Flavobacterium,Acinetobacter and Pseudomonas were the dominant bacterial genera in the Nujiang River.The potential pathogens Acinetobacter and Pseudomonas were relatively abundant.Redundancy analysis(RDA)showed that pH had a significant effect on the community structure and function of bacterioplankton and pathogens.Combined with the gene prediction of nitrogen metabolism function,the abundance of pathogens was increased by higher concentrations of nitrogen and silicate,so controlling the emission of nitrogen and silicate could reduce the enrichment of pathogens in water.This study revealed the differential response of bacterioplankton and pathogens to water quality in rivers,which was of great significance for understanding the characteristics of plankton community changes and the risk of pathogens in rivers.
water qualitybacterioplanktonpathogensNujiang Riverhigh throughput sequencing
NETL
NSTL
万方数据
