CR	Control rhizosphere
SDR	Seedling stage drought-treated rhizosphere
PDR	Flowering stage drought-treated rhizosphere
FDR	Podding stage drought-treated rhizosphere
QIIME	Quantitative Insights into Microbial Ecology
OTUs	Operational taxonomic units
PCA	Principal component analysis
PCoA	Principal co-ordinates analysis
LDA	Linear discriminant analysis
LEfSe	LDA effect size
COG	Cluster of Orthologous Groups