Influence of mature Douglas fir roots on the solid soil phase of the rhizosphere and its solution chemistry

Turpault, M.-P.; Utérano, C.; Boudot, Jean‐Pierre; Ranger, Jacques

doi:10.1007/s11104-005-2584-x

Cited by 47 publications

(37 citation statements)

References 35 publications

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“…Whatever the tree species and layer, N, C, BS, and Ca, Mg, K, Fe, Mn saturations generally increased in the rhizosphere compared to the bulk soil. These results confirm those obtained by Clegg et al (1997), Wang and Zabowski (1998), Turpault et al (2005) in forest sites despite of the low availability of cations in the soils. Also, Gobran and Clegg (1996) observed in a Swedish forest that the CEC and BS were higher at the soil-root interface and the rhizosphere of Norway spruce compared to the bulk soil.…”

Section: Discussionsupporting

confidence: 91%

Impact of common European tree species and Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) on the physicochemical properties of the rhizosphere

Calvaruso¹,

N’Dira²,

Turpault³

2011

Plant Soil

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Trees play a crucial role in nutrient cycling and ecosystem fertility, notably through rhizosphere processes. The aim of this study was to compare soil physicochemical properties between bulk soil and rhizosphere of several tree species, and to compare rhizosphere properties between fertilized and nonfertilized conditions. The soil sampling was performed in Breuil-Chenue forest (North-East of France) in seven stands: native forest (old beech (Fagus sylvatica L.) and oak (Quercus sessiliflora Smith) coppice with standards; CwS), beech, oak (Quercus petraea [Matt.] Liebl.), Douglas-fir and fertilised Douglas-fir, Norway spruce (Picea abies Karst.) and fertilised Norway spruce. Systematic soil sampling was performed at 0-3, 3-10, and 10-23 cm in 20 calibrated pits. The rhizosphere of the different species was generally enriched in C, N, Ca, Mg, and K. Interestingly, the same positive effect was observed in the fertilised plots. The rhizosphere effect varied between tree species for C, "base" cations, pH water and cation exchange capacity. This study reveals that interactions between roots, microorganisms and soil can enrich the pool of nutrients in the rhizosphere compared to bulk soil whatever the soil fertility conditions, and that the magnitude of the rhizosphere effect depends on tree species.

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Section: Discussionsupporting

confidence: 91%

Impact of common European tree species and Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) on the physicochemical properties of the rhizosphere

Calvaruso¹,

N’Dira²,

Turpault³

2011

Plant Soil

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“…Several studies show rhizosphere acidification in forest stands measured in situ, with potential consequences for accelerated weathering rates (Courchesne and Gobran 1997;Turpault et al 2005), although such studies do not demonstrate the causal relationship between these two processes. The impact of pH changes on the weathering of micas and feldspars in the soil around ectomycorrhizal fungi was, however, clearly shown by Arocena et al (1999) and Arocena and Glowa (2000).…”

Section: Root-induced Physical Breakdown Of Rocks and Consequences Fomentioning

confidence: 98%

Plant-microbe-soil interactions in the rhizosphere: an evolutionary perspective

et al. 2009

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Soils are the product of the activities of plants, which supply organic matter and play a pivotal role in weathering rocks and minerals. Many plant species have a distinct ecological amplitude that shows restriction to specific soil types. In the numerous interactions between plants and soil, microorganisms also play a key role. Here we review the existing literature on interactions between plants, microorganisms and soils, and include considerations of evolutionary time scales, where possible. Some of these interactions involve intricate systems of communication, which in the case of symbioses such as the arbuscular mycorrhizal symbiosis are several hundreds of millions years old; others involve the release of exudates from roots, and other products of rhizodeposition that are used as substrates for soil microorganisms. The possible reasons for the survival value of this loss of carbon over tens or hundreds of millions of years of evolution of higher plants are discussed, taking a cost-benefit approach. Coevolution of plants and rhizosphere microorganisms is discussed, in the light of known ecological interactions between various partners in terrestrial ecosystems. Finally, the role of higher plants, especially deep-rooted plants and associated microorganisms in the weathering of rocks and minerals, ultimately contributing to pedogenesis, is addressed. We show that rhizosphere processes in the long run are central to biogeochemical cycles, soil formation and Earth history. Major anticipated discoveries will enhance our basic understanding and allow applications of new knowledge to deal with nutrient deficiencies, pests and diseases, and the challenges of increasing global food production and agroecosystem productivity in an environmentally responsible manner.

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“…Consequently, tree roots and their rhizosphere interactions are at the centre of many ecosystem processes yet remain highly uncertain (Bader and Cheng, 2007;von Lutzow and Kogel-Knabner, 2009). For example, available N and P have been found to be accumulated (Turpault et al, 2005), depleted (Chen et al, 2002) or unchanged (Ehrenfeld et al, 1997) in rhizosphere soil compared to bulk soil in different studies, which shows different results that are tightly linked to the soil conditions and tree species (Zhao et al, 2010).…”

Section: Introductionmentioning

confidence: 96%

Nitrogen transformation in the rhizospheres of two subalpine coniferous species under experimental warming

Yin

Chen

et al. 2012

Applied Soil Ecology

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Influence of mature Douglas fir roots on the solid soil phase of the rhizosphere and its solution chemistry

Cited by 47 publications

References 35 publications

Impact of common European tree species and Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) on the physicochemical properties of the rhizosphere

Impact of common European tree species and Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) on the physicochemical properties of the rhizosphere

Plant-microbe-soil interactions in the rhizosphere: an evolutionary perspective

Nitrogen transformation in the rhizospheres of two subalpine coniferous species under experimental warming

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