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Rhizosphere microbiota interfers with plant-plant interactions

Abstract : Diversity, structure and productivity of above-ground compartment of terrestrial ecosystems have been generally considered as the main drivers of the relationships between diversity and ecosystem functioning. More recently it has been suggested that plant population dynamics may be linked with the development of the below-ground community. The biologically active soil zone where root-root and rootmicrobe communications occur is named “Rhizosphere” where root exudates play active roles in regulating rhizosphere interactions. Root exudation can regulate the soil microbial community, withstand herbivory, facilitate beneficial symbioses, modify the chemical and physical soil properties and inhibit the growth of competing plant species. In this review, we explore the current knowledge assessing the importance of root exudates in plant interactions, in communications between parasitic plants and their hosts and how some soil microbial components could regulate plant species coexistence and changerelationships between plants. This review will be focussed on several well documented biological processes regulating plant-plant communications such as exotic plant species invasions, negative root-root communication (allelopathy) and parasitic plant / host plant interactions and how some soil microbial components can interfere with signal traffic between roots. The reported data show that the overall effect of one plant to another results from multiple interacting mechanisms where soil microbiota can be considered as a key component.
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https://hal.archives-ouvertes.fr/halsde-00525562
Contributor : Christine Delorme <>
Submitted on : Tuesday, October 12, 2010 - 10:38:18 AM
Last modification on : Tuesday, September 7, 2021 - 3:33:10 PM

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A. Sanon, Z. N. Andrianjaka, Y. Prin, R. Bally, J. Thioulouse, et al.. Rhizosphere microbiota interfers with plant-plant interactions. Plant and Soil, Springer Verlag, 2009, pp.259-278. ⟨10.1007/s11104-009-0010-5⟩. ⟨halsde-00525562⟩

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