Data for: Plant host domestication and soil nutrient availability determine positive plant microbial response across the Solanum genus

Domestication of crops has changed how crops shape their associated
microbial communities compared to their progenitors. However, studies
testing how crop domestication-driven differences in rhizosphere microbial
communities affect plant health are limited mostly to specific symbiont
pairings. By conducting a soil manipulation greenhouse study, we examined
plant growth and yield in response to differences in microbial communities
and nutrient availability across a variety of wild, landrace, and
cultivated potatoes. Coupled with this, we conducted 16S and ITS amplicon
sequencing to examine plant host and soil treatment-driven differences in
microbial community composition on potato plant roots. Our results found
the plant response to microbes (PRM) is context-dependent. In low nutrient
conditions, landraces responded positively to the presence of live soil
microbial inocula. Conversely, modern potato varieties positively
responded in high nutrient conditions. Amplicon sequencing found
differences in bacterial communities due to environmental and temporal
factors. However, potato clade (e.g. Andigenum, Chiletanum, S. berthaulti,
and Modern) alone did not lead to differences in microbial communities
that accounted for PRM differences. Differences in PRM between landraces
and modern potatoes, and the correlation of PRM to microbial diversity,
suggest that domestication has altered the S. tuberosum response to
rhizosphere microbiomes.