N	nitrogen
P	phosphorus
K	potassium
VOCs	volatile organic compounds
MPI	maize proteinase inhibitor
PAL	phenylalanine ammonia-lyase
BX9	glucosyltransferase
LOX	lipoxygenase
AOS	allene oxide synthase
UBQ	ubiquitin
ABA	abscisic acid
SA	salicylic acid
JA	jasmonic acid
MeJA	methyl jasmonate
MeSA	methyl salicylate
TCA	tricarboxylic acid
RGR	relative growth rate
DIMBOA	2, 4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one
GC-MS	gas chromatography-mass spectrometer
PBS	phosphate buffered saline
GLM	generalized linear models
ANOVA	analysis of variance
PCA	principal components analysis