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题名: Shifting Species Interaction in Soil Microbial Community and Its Influence on Ecosystem Functions Modulating
作者: Li, Hua1; Colica, Giovanni2; Wu, Pei-pei1; Li, Dunhai1; Rossi, Federico2; De Philippis, Roberto2; Liu, Yongding1
通讯作者: Liu, YD (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, South Donghu Rd 7, Wuhan 430072, Peoples R China.
关键词: STRESS-GRADIENT HYPOTHESIS ; 16S RIBOSOMAL-RNA ; GEL-ELECTROPHORESIS ANALYSIS ; POSITIVE INTERACTIONS ; ENZYME-ACTIVITIES ; INNER-MONGOLIA ; PCR PRIMERS ; CRUSTS ; DIVERSITY ; DESERT
刊名: MICROBIAL ECOLOGY
发表日期: 2013-04-01
DOI: 10.1007/s00248-012-0171-2
卷: 65, 期:3, 页:700-708
收录类别: SCI
文章类型: Article
部门归属: [Li, Hua ; Wu, Pei-pei ; Li, Dunhai ; Liu, Yongding] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China ; [Colica, Giovanni ; Rossi, Federico ; De Philippis, Roberto] Univ Florence, Dept Agr Biotechnol, I-50144 Florence, Italy
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Key Technology R&D Program of China [2009BAC54B01]; National Natural Science Foundation of China [41071041]; China-Italy Executive Program for Scientific and Technological Cooperation [NRP 9]
类目[WOS]: Ecology ; Marine & Freshwater Biology ; Microbiology
研究领域[WOS]: Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Microbiology
摘要: The supportive and negative evidence for the stress gradient hypothesis (SGH) led to an ongoing debate among ecologists and called for new empirical and theoretical work. In this study, we took various biological soil crust (BSCs) samples along a spatial gradient with four environmental stress levels to examine the fitness of SGH in microbial interactions and evaluate its influence on biodiversity-function relationships in BSCs. A new assessment method of species interactions within hard-cultured invisible soil community was employed, directly based on denaturing gradient gel electrophoresis fingerprint images. The results showed that biotic interactions in soil phototroph community dramatically shifted from facilitation to dominant competition with the improvement of microhabitats. It offered new evidence, which presented a different perspective on the hypothesis that the relative importance of facilitation and competition varies inversely along the gradient of abiotic stress. The path analysis indicated that influence of biotic interactions (r = 0.19, p < 0.05) on ecosystem functions is lower than other community properties (r = 0.62, p < 0.001), including soil moisture, crust coverage, and biodiversity. Furthermore, the correlation between species interactions and community properties was non-significant with low negative influence (r = -0.27, p > 0.05). We demonstrate that the inversion of biotic interaction as a response to the gradient of abiotic stresses existed not only in the visible plant community but also in the soil microbial community.
英文摘要: The supportive and negative evidence for the stress gradient hypothesis (SGH) led to an ongoing debate among ecologists and called for new empirical and theoretical work. In this study, we took various biological soil crust (BSCs) samples along a spatial gradient with four environmental stress levels to examine the fitness of SGH in microbial interactions and evaluate its influence on biodiversity-function relationships in BSCs. A new assessment method of species interactions within hard-cultured invisible soil community was employed, directly based on denaturing gradient gel electrophoresis fingerprint images. The results showed that biotic interactions in soil phototroph community dramatically shifted from facilitation to dominant competition with the improvement of microhabitats. It offered new evidence, which presented a different perspective on the hypothesis that the relative importance of facilitation and competition varies inversely along the gradient of abiotic stress. The path analysis indicated that influence of biotic interactions (r = 0.19, p < 0.05) on ecosystem functions is lower than other community properties (r = 0.62, p < 0.001), including soil moisture, crust coverage, and biodiversity. Furthermore, the correlation between species interactions and community properties was non-significant with low negative influence (r = -0.27, p > 0.05). We demonstrate that the inversion of biotic interaction as a response to the gradient of abiotic stresses existed not only in the visible plant community but also in the soil microbial community.
关键词[WOS]: STRESS-GRADIENT HYPOTHESIS ; 16S RIBOSOMAL-RNA ; GEL-ELECTROPHORESIS ANALYSIS ; POSITIVE INTERACTIONS ; ENZYME-ACTIVITIES ; INNER-MONGOLIA ; PCR PRIMERS ; CRUSTS ; DIVERSITY ; DESERT
语种: 英语
WOS记录号: WOS:000317421000018
ISSN号: 0095-3628
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19326
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Univ Florence, Dept Agr Biotechnol, I-50144 Florence, Italy

Recommended Citation:
Li, H; Colica, G; Wu, PP; Li, DH; Rossi, F; De Philippis, R; Liu, YD.Shifting Species Interaction in Soil Microbial Community and Its Influence on Ecosystem Functions Modulating,MICROBIAL ECOLOGY,2013,65(3):700-708
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