| 沉水植物对沉积物微生物群落结构影响:以洪泽湖湿地为例 |
| 摘要点击 2990 全文点击 1358 投稿时间：2015-11-18 修订日期：2015-12-29 |
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| 中文关键词 磷脂脂肪酸 微生物群落 沉积物 沉水植物 生长周期 |
| 英文关键词 phospholipid fatty acids (PLFAs) microbial community sediment submerged plant growth period |
| 作者 | 单位 | E-mail | | 张丁予 | 南京师范大学地理科学学院, 南京 210023 | 841575181@qq.com | | 章婷曦 | 南京师范大学地理科学学院, 南京 210023
江苏省地理信息资源开发与利用协同创新中心, 南京 210023
江苏省物质循环与污染控制重点实验室, 南京 210023
江苏省环境演变与生态建设重点实验室, 南京 210023 | zhangtingxi@njnu.edu.cn | | 董丹萍 | 南京师范大学地理科学学院, 南京 210023 | | | 李德芳 | 南京师范大学地理科学学院, 南京 210023 | | | 王国祥 | 南京师范大学地理科学学院, 南京 210023
江苏省地理信息资源开发与利用协同创新中心, 南京 210023
江苏省物质循环与污染控制重点实验室, 南京 210023
江苏省环境演变与生态建设重点实验室, 南京 210023 | |
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| 中文摘要 |
| 应用磷脂脂肪酸(PLFA)方法分析洪泽湖湿地典型沉水植物菹草群丛、蓖齿眼子菜群丛、菹-蓖混丛对其根系沉积物微生物群落结构的影响,以期了解沉水植物种类以及在不同生长时期对沉积物微生物群落结构的影响规律.结果表明,植物群丛根系沉积物PLFA总量在不同的时期发生了明显的变化,而同一时期的不同群丛PLFA总量差异不显著.沉积物微生物群落结构受沉水植物根系影响,菹草群丛中G+/G-(革兰氏阳性菌/革兰氏阴性菌)在3个不同生长时期比值为0.74、1.35、1.26,蓖齿眼子菜群丛G+/G-比值为0.89、0.98、1.49,菹-蓖混合群丛 G+/G-比值为0.95、1.39、1.35,其G+/G-的变化和植物根系生长有密切关系.沉积物微生物群落结构受环境因子的影响,环境因子如T、pH、TOC、DO等与沉积物PLFA中特征磷脂存在相关性. |
| 英文摘要 |
| Phospholipid fatty acids (PLFAs) method was applied to analyze the influence of submerged plants on sediment microbial community structure, in order to investigate the changes of sediment microbial community structure for different kinds of the submerged plants in different growth periods. Particularly, Potamogeton crispus L., Potamogeton pectinatus L and the mixed group were chosen as the typical submerged plants in Hongze Lake for investigation in this paper. The results indicated that the change of total PLFAs in different periods was significant, on the contrary, the PLFA change for different groups in the same period was insignificant. The values of G+ PLFA/G-PLFA in the submerged plant group were also highly related to the different growth periods, which demonstrated that the root function of the submerged plant had a severe impact on the microbial community in sediment. Furthermore, some environmental factors, such as Temperature, pH, TOC and DO, were correlated to characteristic phospholipid of PLFAs in sediment, which means the environmental factors could also affect the microbial community structure. |
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