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反硝化脱硫工艺中微生物群落结构及动态分析 被引量:7

Structure and Dynamics of Microbial Community in the Denitrifying Sulfide Removal Process
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摘要 为了研究反硝化脱硫工艺(denitrifying sulfide removal,DSR)中微生物群落与工艺运行的相关性,实验提取了反应器运行不同阶段污泥样品中微生物的全基因组DNA,利用高通量宏基因组学技术———基因芯片来解析各阶段功能微生物群落的结构特征及其演替过程.通过对功能基因的Simpson、Shannon多样性指数和聚类分析表明,微生物群落结构会随着反应器运行的阶段进行相应调整,且变化较大.在运行的前两个阶段,由于不适应环境,微生物群落的多样性指数比起始时明显减少,随着反应器的运行污泥逐渐成熟,多样性指数迅速增加,也标志着反应器进入稳定运行阶段.通过对反硝化脱硫过程中关键基因相对丰度的分析发现,功能基因的丰度不仅能反映功能菌群的活性,而且与工艺处理效果密切相关. In order to investigate the relationship between the structure of microbial community and the operational efficiency of the denitrifying sulfide removal (DSR) process, whole genomic DNA was extracted from sludge samples at each operational stage. Functional gene arrays (FGAs) , a high throughput metagenomic technology, was employed to characterize the change of microbial community structure in DSR process. The results of diversity indices ( Simpson and Shannon indices) and clustering showed that the microbial community structure changed greatly with stages according to the operational conditions. In stage I and II , diversity indices and richness decreased due to acclimation of the microbial community to the environment, whereas they increased notably according to the maturing of sludge which may indicate that the bioreactor entered the steady stage. Analysis of key functional genes showed that the abundance of genes did not only reflect the activities of functional bacteria but also had a close relationship with the reactor performance.
出处 《环境科学》 EI CAS CSCD 北大核心 2013年第3期1190-1195,共6页 Environmental Science
基金 国家高技术研究发展计划(863)项目(2011AA060904)
关键词 反硝化脱硫工艺 功能基因芯片 微生物群落 厌氧膨胀颗粒床反应器 聚类分析 DSR process functional gene array microbial community expanded granular sludge bed reactor cluster analysis
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  • 1Chen C, Ren N Q, Wang A J, et al. Simultaneous biological removal of sulfur, nitrogen and carbon using EGSB reactor[ J]. Applied Microbiology and Biotechnology, 2008, 78 (6): 1057- 1063.
  • 2Chen C, Wang A J, Ren N Q, et al. High-rate denitrifying sulfide removal process in expanded granular sludge bed reactor [ J ]. Bioresource Technology, 2009, 100 ( 7 ) : 2316- 2319.
  • 3eyes-Avila J, Razo-Flores E, Gomez J. Simultaneous biological Bmoval of nitrogen, carbon and sulfur by denitrification [ J ]. Pater Research, 2004, 38 ( 14-15 ) : 3313-3321.
  • 4Chen C, Wang A J, Ren N denitrifying sulfide removal Q, et al. Biological breakdown of process in high-rate expanded granular bed reactor [ J ]. Applied Microbiology and Biotechnology, 2010, 81(4 ) : 765-770.
  • 5He Z L, Gentry T J, Schadt C W, et al. GeoChip: a comprehensive microarray for investigating biogeochemical, ecological and environmental processes [ J]. The ISME Journal, 2007, 1(1) : 67 -77.
  • 6He Z L, Xu M Y, Deng Y, et al. Metagenomic analysis reveals a marked divergence in the structure of belowground microbial communities at elevated CO2 [ J ]. Ecology Letters, 2010, 13 (5) : 564-575.
  • 7Deng Y, He Z, Xu M Y, et al. Elevated carbon dioxide alters the structure of soil microbial communities [ J ]. App|ied and Environmental Microbiology, 2012, 78 ( 8 ) : 2991 - 2995.
  • 8He Z L, Piceno Y, Deng Y, et al. The phylogenetic composition and structure of soil microbial communities shifts in response to elevated carbon dioxide [ J ]. The ISME Journal, 2012, 6 (2) : 259-272.
  • 9Liang Y T, Li G H, Van analysis of microbial Nostrand J D, et al. functional diversity Microarray-based along an oil contamination gradient in oil field [ J ]. FEMS Microbiology Ecology, 2009, 70(2): 324-333.
  • 10Liang Y T, Van Nostrand J D, Wang J, et al. Microarray-based functional gene analysis of soil microbial communities during ozonation and biodegradation of crude oil [ J ]. Chemosphere, 2009, 75(2) : 193-199.

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