Microorganisms
colonizing the plant rhizosphere provide a number
of beneficial functions for their host. Although an increasing number
of investigations clarified the great functional capabilities of rhizosphere
microbial communities, the understanding of the precise mechanisms
underlying the impact of rhizosphere microbiome assemblies is still
limited. Also, not much is known about the various beneficial functions
of the rhizosphere microbiome. In this review, we summarize the current
knowledge of biotic and abiotic factors that shape the rhizosphere
microbiome as well as the rhizosphere microbiome traits that are beneficial
to plants growth and disease-resistance. We give particular emphasis
on the impact of plant root metabolites on rhizosphere microbiome
assemblies and on how the microbiome contributes to plant growth,
yield, and disease-resistance. Finally, we introduce a new perspective
and a novel method showing how a synthetic microbial community construction
provides an effective approach to unravel the plant–microbes
and microbes–microbes interplays.
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