| 城市纳污河流沉积物微生物群落结构特征 |
| |
| 引用本文： | 朱亮,孙凌宇,储如花,钱静.城市纳污河流沉积物微生物群落结构特征[J].水科学进展,2013,24(1):132-137. |
| |
| 作者姓名： | 朱亮 孙凌宇 储如花 钱静 |
| |
| 作者单位： | 1.河海大学浅水湖泊综合治理与资源开发教育部重点实验室, 江苏 南京 210098; |
| |
| 基金项目： | 国家水体污染控制及治理科技重大专项(2009ZX07317-007-04)~~ |
| |
| 摘 要： | 以南京市运粮河沉积物为研究对象,通过磷脂脂肪酸(PLFA)技术分析了不同水期城市纳污河流沉积物微生物群落结构特征。结果表明:在不同的水期运粮河沉积物微生物量出现了显著差异,温度是导致微生物量在丰、平、枯三期出现显著差异的主要因素(P<0.05);在相同水期,营养物质含量高的地方对应着高的微生物量;16:0 iso、17:0 anteiso、15:0 iso这几种PLFA所指示的革兰氏阳性菌(G+)是影响运粮河沉积物微生物群落构成的主要菌落,导致沉积物微生物群落结构出现显著差异的环境因素是水期;单不饱和/支链脂肪酸比值可以作为反映水环境系统整体营养水平的指标,在C/N比值升高时微生物会将单不饱和脂肪酸转变成环丙基或者饱和脂肪酸以适应新的环境;PLFA含量比c(i15:0)+c(i17:0)]/c(a15:0)+c(a17:0)]可以作为指示水环境碳素含量的标志。
|
| 关 键 词： | 磷脂脂肪酸 微生物量 群落结构 环境压力 |
| 收稿时间： | 2012-04-17 |
On the characteristic of sediments microbial community structure of urban polluted river |
| |
| ZHU Liang,SUN Lingyu,CHU Ruhua,QIAN Jing.On the characteristic of sediments microbial community structure of urban polluted river[J].Advances in Water Science,2013,24(1):132-137. |
| |
| Authors: | ZHU Liang SUN Lingyu CHU Ruhua QIAN Jing |
| |
| Institution: | 1.Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China;2.College of Environmental Science and Engineering, Hohai University, Nanjing 210098, China;3.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing 210098, China |
| |
| Abstract: | The research adopts phospholipid fatty acid analysis to quantify the microbial community structure of sediments from Yunliang River in different water types during different periods. The results show the following aspects: ① the microbial biomass is significantly different in different water-stage while the temperature is the dominant factor; ② in the same period, the nutritional content is positively correlated to the microbial biomass; ③ G+ indiated by 16:0 iso、17:0 anteiso、15:0 iso is the main microbial community that affects the sediments microbial community structure and water-stage fluctuation significantly influences the sediments microbial community structure; ④ Monounsaturated PLFAs/ branched PLFAs could reflect the nutrition status as microorganism would turn the monounsaturated PLFAs to cyclopropyl PLFAs and saturated PLFAs in order to suit the new conditions when C/N increased in sediment; ⑤ c(i15:0)+c(i17:0)]/c(a15:0)+c(a17:0)] can be used as the indicator of Carbon content in water environment. |
| |
| Keywords: | phospholipid fatty acid microbial biomass microbial community structure environment stress |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《水科学进展》浏览原始摘要信息 |
| 点击此处可从《水科学进展》下载免费的PDF全文 |
|
