This is a summary of the biological question being asked.
Paper: Castrillo, G., Teixeira, P.J.P.L., Paredes, S.H., Law, T.F., de Lorenzo, L., Feltcher, M.E., Finkel, O.M., Breakfield, N.W., Mieczkowski, P., Jones, C.D., Paz-Ares, J., Dangl, J.L., 2017. Root microbiota drive direct integration of phosphate stress and immunity. Nature 543, 513–518. doi:10.1038/nature21417
Arabidopsis thaliana, root microbiome
Mutants: Genes related to phosphate stress response (PSR); knock-outs
Conclusion by authors: the disruption of PSR genes altered the root microbiome