ROS	reactive oxygen species
ABA	abscisic acid
GA3	gibberellic acid
SA	salicylic acid
JA	jasmonic acid
PGPR	plant growth-promoting rhizosphere bacteria
S	single salt stress
SD	short-term drought exposure under salt stress at the flowering stage
SEM	scanning electron microscopy
TEM	transmission electron microscopy
PCoA	principal coordinate analysis
LDA	linear discriminant analysis
UHPLC-MS/MS	ultra-high-performance liquid chromatography-tandem mass spectrometry
KEGG	Kyoto Encyclopedia of Genes and Genomes
DAM	differentially accumulated metabolite