Experimental analysis of the effect of exotic and native plant species on the structure and function of soil microbial communities

Kourtev, Peter Stefanov; Ehrenfeld, Joan G.; Häggblom, Max M.

doi:10.1016/s0038-0717(03)00120-2

Cited by 385 publications

(266 citation statements)

References 35 publications

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“…Indeed, E. camaldulensis, by its root exudates and litter fall select microorganisms able to use its carbon residues and support its acidifying effect. Meyer (1994) and Kourtev et al (2003) demonstrated that exotic species promote changes in functional groups within the microbiota. Similar results were reported by Saetre and Bååth (2000) and Yao et al (2000) which showed that changes in the ratio of Gram-negative to Gram-positive bacteria were related to quality of organic matter in the soil under exotic species.…”

Section: Discussionmentioning

confidence: 99%

Changes in Soil Ph, Polyphenol Content and Microbial Community Mediated by Eucalyptus Camaldulensis

Soumaré¹,

Sall

Sanon³

et al. 2016

Appl Ecol Env Res

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Abstract. Eucalyptus camaldulensis has been the main exotic species planted in reforestation programs in the tropics due to its fast growth and adaptability to climate variations. Based on the premise that the conversion from natural grazed pastures to commercial Eucalyptus plantations generates significant changes in soil properties, we assessed the impact of this exotic plantation on soil chemical and biological indicators. The study was conducted in 6 plantations across Senegal following a decreasing rainfall gradient from south to north. The plantations were divided in three lots according to their age: young plantations (established in 2003, 6 years old); intermediate plantations (established in 1998, 11 years old) and old plantations (established in 1982 and 1983, 26 years old). Our results clearly showed that E. camaldulensis plants significantly modified soil pH and soil bacterial community at all sites regardless of the age of the plantation. Microbial biomass (assessed by substrate-induced respiration), community structure (assessed by denaturing gradient gel electrophoresis profiles) and function (assessed by Catabolic Response Profile using different substrates) were all significantly decreased. The acidifying effect of E. camaldulensis, the effect of high level of polyphenols and their impact on microbial communities and ecosystem functioning were discussed.

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Section: Discussionmentioning

confidence: 99%

Changes in Soil Ph, Polyphenol Content and Microbial Community Mediated by Eucalyptus Camaldulensis

Soumaré¹,

Sall

Sanon³

et al. 2016

Appl Ecol Env Res

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“…This includes having an impact on the biogeochemical cycles of N and other elements [5][6][7][8], on the quantity and quality of soil organic matter [9], and on soil pH [10]. Changes to the chemical properties of soil due to the influence of vegetation have been observed in many different ecosystems [5,[11][12][13][14][15], and recently special attention has been focused on the role of alien species in soil nutrient enrichment [16,17].…”

Section: Introductionmentioning

confidence: 99%

“…Changes to the chemical properties of soil due to the influence of vegetation have been observed in many different ecosystems [5,[11][12][13][14][15], and recently special attention has been focused on the role of alien species in soil nutrient enrichment [16,17]. Different plant species, including alien ones, have been shown to directly impact the modification of biotic soil environments [7,10,18]. Invasion of geographically alien plant species may not only have an impact on the chemical properties of soils but also on the different processes that take place in an ecosystem.…”

Section: Introductionmentioning

confidence: 99%

Chemical composition of the leaves of Reynoutria japonica Houtt. and soil features in polluted areas

et al. 2013

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Abstract:The study was conducted on six sites that are dominated by Japanese knotweed (Reynoutria japonica) and that vary in the level of industrialization and habitat transformation by humans. The aim of the research was to investigate the chemical-physical features of soil under a closed and dense canopy of R. japonica, the chemical composition of the R. japonica leaves, and to compare the content of certain elements in the soil-plant-soil system. The soil organic carbon (C org ) content varied from 1.38±0.004% to 8.2±0.047% and the maximum in leaves was 49.11±0.090%. The lowest levels of total nitrogen (N tot ) in soil were recorded on the heavily disturbed sites (till 0.227±0.021%). Soil pH varied greatly, ranging from acidic (pH=4.0) to neutral (pH=7.7). Heavy metal content differed significantly among the study sites. At all of the sites, both in the case of soil and plant leaves, Zn was a dominant element and its concentration ranged from 41.5 to 501.2 mg·kg -1 in soils and from 38.6 to 541.7 mg·kg -1 in leaves. ) were observed on the site that had been influenced by agricultural practices. The results obtained showed that R. japonica is able to accumulate high levels of heavy metals.

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“…Numerous studies have clearly shown that structurally and functionally distinct microbial communities develop under different plant species (36,37,42). Several well-documented studies have shown that exotic plant species can significantly alter soil biological and chemical characteristics (40,41,42).…”

Section: Discussionmentioning

confidence: 99%

“…Several well-documented studies have shown that exotic plant species can significantly alter soil biological and chemical characteristics (40,41,42). In particular, it has been found that exotic plants could alter the structure of AM fungus communities (40) and disrupt mutualistic associations between existing ecological associations within native communities (7,56).…”

Section: Discussionmentioning

confidence: 99%

The Exotic Legume Tree Species Acacia holosericea Alters Microbial Soil Functionalities and the Structure of the Arbuscular Mycorrhizal Community

Remigi

Faye

Kane

et al. 2008

Appl Environ Microbiol

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The response of microbial functional diversity as well as its resistance to stress or disturbances caused by the introduction of an exotic tree species, Acacia holosericea, ectomycorrhized or not with Pisolithus albus, was examined. The results show that this ectomycorrhizal fungus promotes drastically the growth of this fastgrowing tree species in field conditions after 7 years of plantation. Compared to the crop soil surrounding the A. holosericea plantation, this exotic tree species, associated or not with the ectomycorrhizal symbiont, induced strong modifications in soil microbial functionalities (assessed by measuring the patterns of in situ catabolic potential of microbial communities) and reduced soil resistance in response to increasing stress or disturbance (salinity, temperature, and freeze-thaw and wet-dry cycles). In addition, A. holosericea strongly modified the structure of arbuscular mycorrhizal fungus communities. These results show clearly that exotic plants may be responsible for important changes in soil microbiota affecting the structure and functions of microbial communities.Forest loss and degradation through human disturbance as well as deterioration of land productivity is a major problem in large areas of arid and semiarid environments. Degraded soils are characterized by loss or disturbance of the vegetation cover, increased soil erosion, decreased in-water infiltration, loss of available nutrients and organic matter, loss of microbial propagules, and/or diminution in microbial activity (25,35,44). Restoration of ecosystem health and productivity was traditionally achieved via abandonment of land and subsequent natural forest succession. In recent decades, management options for acceleration of the recovery and restoration of the productivity and biodiversity of disturbed ecosystems have been considered, since fallow periods have been shortened or eliminated due to increased anthropogenic pressure and agriculture intensification (49). Concerning the techniques used for rehabilitating degraded areas, there is increasing evidence that forest plantations can play a key role in ecosystem rehabilitation or restoration (52). Among candidate plantation species, fast-growing leguminous tree species (e.g., Australian Acacia species) should have preference.

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Experimental analysis of the effect of exotic and native plant species on the structure and function of soil microbial communities

Cited by 385 publications

References 35 publications

Changes in Soil Ph, Polyphenol Content and Microbial Community Mediated by Eucalyptus Camaldulensis

Changes in Soil Ph, Polyphenol Content and Microbial Community Mediated by Eucalyptus Camaldulensis

Chemical composition of the leaves of Reynoutria japonica Houtt. and soil features in polluted areas

The Exotic Legume Tree Species Acacia holosericea Alters Microbial Soil Functionalities and the Structure of the Arbuscular Mycorrhizal Community

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