Rhizosphere Conference

Wenzel, W.

doi:10.2134/jeq2005.0002in

Cited by 2 publications

(2 citation statements)

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“…The rhizosphere is the site of complex plant-microorganism interactions and is of interest from multiple environmental perspectives, including the protection of plants. It is the subject of a European cooperation in the field of scientific and technical research (Wenzel, 2005; http://www.rhizo.at/ cost631) and an international conference (Hartmann, 2008; http://rhizosphere3.com) specifically dedicated to it. Because of the importance of underground parts in the S. tuberosum species and its proximity with telluric pathogens, the potato rhizosphere is the main target in biocontrol studies.…”

Section: Resultsmentioning

confidence: 99%

Mechanisms and recent advances in biological control mediated through the potato rhizosphere

Diallo

Crépin

Barbey

et al. 2011

FEMS Microbiology Ecology

101

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Potato cultivation has a strategic role as a food source for the human population. Its promising future development relies on improving the control of the numerous microbial diseases that affect its growth. Numerous and recent studies on the potato rhizosphere, mycorrhizosphere and endorhiza reveal the presence of a diverse and dense microbial community. This microbial community constitutes a rich source for plant growth-promoting rhizobacteria and biocontrol agents. So far, the beneficial effects achieved are related to microbial siderophores, antibiotics, biosynthesis of surfactants and phytohormones, nutrient and spatial competition, mycoparasitism, induced systemic resistance, phage therapy, quorum quenching and construction of transgenic lines. Considering the crucial role for food and the diversity of mechanisms involved in growth promotion and microbial protection, potato constitutes a historical and accurate model in developing new biocontrol strategies.

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Section: Resultsmentioning

confidence: 99%

Mechanisms and recent advances in biological control mediated through the potato rhizosphere

Diallo

Crépin

Barbey

et al. 2011

FEMS Microbiology Ecology

101

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“…The focus of rhizosphere studies has recently been opened to the fate of soil pollutants such as heavy metals as a consequence of increasing awareness of soil pollution problems and the attempts to control the pollutants and to remediate contaminated soils (Wenzel 2005). Nickel is a heavy metal of concern in soil that can be of geogenic origin, as in serpentine soils (Robinson et al 1999), or may arise from anthropogenic pollution Ashworth and Alloway 2004).…”

Section: Introductionmentioning

confidence: 99%

Analysis of nickel concentration profiles around the roots of the hyperaccumulator plant Berkheya coddii using MRI and numerical simulations

et al. 2009

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Investigations of soil-root interactions are hampered by the difficult experimental accessibility of the rhizosphere. Here we show the potential of Magnetic Resonance Imaging (MRI) as a non-destructive measurement technique in combination with numerical modelling to study the dynamics of the spatial distribution of dissolved nickel (Ni 2+ ) around the roots of the nickel hyperaccumulator plant Berkheya coddii. Special rhizoboxes were used in which a root monolayer had been grown, separated from an adjacent inert glass bead packing by a nylon membrane. After applying a Ni 2+ solution of 10 mg l −1 , the rhizobox was imaged repeatedly using MRI. The obtained temporal sequence of 2-dimensional Ni 2+ maps in the vicinity of the roots showed that Ni 2+ concentrations increased towards the root plane, revealing an accumulation pattern. Numerical modelling supported the Ni 2+ distributions to result from advective water flow towards the root plane, driven by transpiration, and diffusion of Ni 2+ tending to eliminate the concentration gradient. With the model, we could study how the accumulation pattern of Ni 2+ in the root zone transforms into a depletion pattern depending on transpiration rate, solute uptake rate, and Ni 2+ concentration in solution.

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Rhizosphere Conference

Cited by 2 publications

References 0 publications

Mechanisms and recent advances in biological control mediated through the potato rhizosphere

Mechanisms and recent advances in biological control mediated through the potato rhizosphere

Analysis of nickel concentration profiles around the roots of the hyperaccumulator plant Berkheya coddii using MRI and numerical simulations

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