Protists: Puppet Masters of the Rhizosphere Microbiome

Zhilei Gao, Ida Karlsson, Stefan Geisen, George Kowalchuk, Alexandre Jousset (Corresponding author)

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The rhizosphere microbiome is a central determinant of plant performance. Microbiome assembly has traditionally been investigated from a bottom-up perspective, assessing how resources such as root exudates drive microbiome assembly. However, the importance of predation as a driver of microbiome structure has to date largely remained overlooked. Here we review the importance of protists, a paraphyletic group of unicellular eukaryotes, as a key regulator of microbiome assembly. Protists can promote plant-beneficial functions within the microbiome, accelerate nutrient cycling, and remove pathogens. We conclude that protists form an essential component of the rhizosphere microbiome and that accounting for predator–prey interactions would greatly improve our ability to predict and manage microbiome function at the service of plant growth and health.
Original languageEnglish
Pages (from-to)165-176
JournalTrends in Plant Science
Issue number2
Publication statusPublished - Feb 2019


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