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Shifts in the bacterial community structure and function along a vegetation gradient in the Great Xing'an Mountains

文献类型： 外文期刊

作者： Li, Xin 1 ; Pang, Haosheng 1 ; Zhao, Yusen 3 ; Sun, Minglong 4 ; Zhang, Xiuli 1 ; Xu, Nan 5 ; He, Guoqiang 6 ; Zhang, Hui 1 ;

作者机构： 1.Northeast Forestry Univ, Coll Life Sci, Harbin, Heilongjiang, Peoples R China

2.Northeast Agr Univ, Coll Resources & Environm, Harbin, Heilongjiang, Peoples R China

3.Northeast Forestry Univ, Sch Forestry, Harbin, Heilongjiang, Peoples R China

4.Heilongjiang Acad Agr Sci, Inst Crop Breeding, Harbin, Heilongjiang, Peoples R China

5.Heilongjiang Acad Agr Sci, Nat Resources & Ecol Inst, Harbin, Heilongjiang, Peoples R China

6.Tobacco Res Inst Mudanjiang, Mudanjiang, Peoples R China

关键词： Soil bacteria;Biolog EcoPlate (TM);MiSeq sequencing;vegetation type

期刊名称：SCANDINAVIAN JOURNAL OF FOREST RESEARCH （ 影响因子：2.103； 五年影响因子：2.003 ）

ISSN： 0282-7581

年卷期： 2018 年 33 卷 2 期

页码：

收录情况： SCI

摘要： The aim of this study was to compare soil bacterial communities in the Great Xing'an Mountains that represent three dominant vegetation types (Quercus mongolica forest, shrub mixed with herb and grassland). Soil bacterial communities were analyzed by both culture-dependent physiological profiling (Biolog) and culture-independent DNA-based approaches. The Q. mongolica forest and shrub mixed with herb had higher average well color development than the grassland, and the Q. mongolica forest and shrub mixed with herb soil bacterial communities easily utilized miscellaneous and amines/amides. The bacterial community structure was distinct across the three sites. Most of Acidobacteria, Proteobacteria and Bacteroidetes were found in grassland soil, while Firmicutes was present at a higher percentage in the Q. mongolica soil. Extracellular enzyme assays indicated that the soil ecosystem in the grassland experienced altered N and P nutrient cycling dynamics. pH, available phosphorus, potassium and nitrogen were important in shaping bacterial community structure. These results suggest that vegetation type was a strong determinant of the structure and function of bacterial communities, which may subsequently lead to significant changes in ecosystem functioning.

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