Epiphytic bacterial community composition on two common submerged macrophytes in brackish water and freshwater.
Epiphytic bacterial community composition on two common submerged macrophytes in brackish water and freshwater.
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DOI：
10.1186/1471-2180-8-58
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发表时间：
2008-04-10
期刊：
影响因子：
4.2
通讯作者：
Gross, Elisabeth M.
中科院分区：
文献类型：
--
作者：
Hempel, Melanie;Blume, Maja;Blindow, Irmgard;Gross, Elisabeth M.
植物和它们的异养细菌生物膜群落可能强烈相互作用，特别是在水生系统中。我们的目的是确定是否不同的水生植物或其栖息地决定细菌群落组成。比较了两种常见水生植物粗枝轮藻（CharasperaWilld.）和被子植物穗花狐尾藻（Myriophyllum spicatum L.）使用荧光原位杂交技术在两种栖息地，淡水（康斯坦茨湖）和半咸水（Schaproder Bodden）中进行。根据生境、植物种类和植物部位分析了细菌群落组成。微咸水植物上的细菌丰度[5.3 × 107个细胞（g干质量）-1]高于淡水植物[1.3 × 107个细胞（g干质量）-1]，老枝具有更高的丰度。淡水植物的有机质含量低于半咸水植物（35%对58%），而苦草的有机质含量低于半咸水植物（35%对58%）。aspera中M.穗状花序（41 vs.52%）。营养物质、叶绿素、总酚和花青素含量在不同植物和生境中存在差异。特别是总酚类物质和花色苷的含量以紫云英最高。spicatum，并在一般较高的淡水比在微咸水栖息地。噬细胞-黄细菌-拟杆菌类群的成员在所有样品中都很丰富（占总细胞计数的5-35%），尤其是在M.穗花植物样品α变形菌是第二大类（占总细胞数的3-17%）。β-变形菌、γ-变形菌和放线菌存在于所有样品中（占总细胞计数的5%或10%）。浮游菌在M. spicatum在淡水中，但在C.在淡水中的aspera和在微咸水中的两种植物上。水生植物表面细菌生物膜的群落结构受宿主植物和环境因素的影响。不同的植物物种，植物部分和栖息地的具体差异，总细胞计数和两个细菌组（CFB，planctomycetes）支持的综合影响的基板（植物）和栖息地的附生细菌群落组成。多酚的存在可能解释了淡水M. spicatum与M. spicatum和C.在这两个栖息地的Aspera。
Plants and their heterotrophic bacterial biofilm communities possibly strongly interact, especially in aquatic systems. We aimed to ascertain whether different macrophytes or their habitats determine bacterial community composition. We compared the composition of epiphytic bacteria on two common aquatic macrophytes, the macroalga Chara aspera Willd. and the angiosperm Myriophyllum spicatum L., in two habitats, freshwater (Lake Constance) and brackish water (Schaproder Bodden), using fluorescence in situ hybridization. The bacterial community composition was analysed based on habitat, plant species, and plant part. The bacterial abundance was higher on plants from brackish water [5.3 × 107 cells (g dry mass)-1] than on plants from freshwater [1.3 × 107 cells (g dry mass)-1], with older shoots having a higher abundance. The organic content of freshwater plants was lower than that of brackish water plants (35 vs. 58%), and lower in C. aspera than in M. spicatum (41 vs. 52%). The content of nutrients, chlorophyll, total phenolic compounds, and anthocyanin differed in the plants and habitats. Especially the content of total phenolic compounds and anthocyanin was higher in M. spicatum, and in general higher in the freshwater than in the brackish water habitat. Members of the Cytophaga-Flavobacteria-Bacteroidetes group were abundant in all samples (5–35% of the total cell counts) and were especially dominant in M. spicatum samples. Alphaproteobacteria were the second major group (3–17% of the total cell counts). Betaproteobacteria, gammaproteobacteria, and actinomycetes were present in all samples (5 or 10% of the total cell counts). Planctomycetes were almost absent on M. spicatum in freshwater, but present on C. aspera in freshwater and on both plants in brackish water. Bacterial biofilm communities on the surface of aquatic plants might be influenced by the host plant and environmental factors. Distinct plant species, plant part and habitat specific differences in total cell counts and two bacterial groups (CFB, planctomycetes) support the combined impact of substrate (plant) and habitat on epiphytic bacterial community composition. The presence of polyphenols might explain the distinct bacterial community on freshwater M. spicatum compared to that of M. spicatum in brackish water and of C. aspera in both habitats.
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影响因子：
4.4
作者：
Brümmer, IHM;Felske, ADM;Wagner-Döbler, I
通讯作者：
Wagner-Döbler, I
影响因子：
3.8
作者：
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影响因子：
1.4
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4.4
作者：
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影响因子：
2.3
作者：
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