Study on Rhizosphere Microbial Community Structure of Plants at Yeyahu Wetland in Winter by PLFA Analysis
This paper introduced the technique of phospholipid fatty acid (PLFA) which was used to study the microbial community structure in rhizosphere soil of Scirpus planiculmis,Phragmites communis and Zizania aquatica in Yeyahu Wetland,the relationship between microbial community structure and microbial biomass phosphorus was also analyzed.The study showed that rhizosphere microbial biomass of Scirpus planiculmis was the highest,amounting to 60 nmol/g,and followed by Zizania aquatic and Phragmites communis.The aerobic bacteria 16∶0,18∶0 and i16∶0 were typical of the predominant bacteria in rhizosphere soil and 18∶2ω6,9,18 ∶1ω9c were also the typical of the fungi.The main factors affecting microbial biomass and community structure in rhizosphere of Scirpus planiculmis and Zizania aquatic were temperature and litter,but Phragmites communis had a better adaptability because of its special root.There was a good correlation between microbial biomass and phosphorus in microbial biomass,and bacteria content and microbial biomass phosphorus content were significantly positively correlated.Therefore,the wetland plant rhizosphere microorganisms were influenced by species of the plant.According to the characteristics of different plants,it is recommended that planting and harvesting in a staggered way in the northern frigid regions and harvesting in plant decay period,which would be helpful to pollutants removal.
wetland plantsmicrobial community structurerhizosphere soilphospholipid fatty acids
NETL
NSTL
万方数据
维普
