BL	black layer
DAP	days after pollination
BETL	basal endosperm transfer layer
IEP	inner epidermis cells of the pedicel
GO	Gene ontology
KEGG	Kyoto Encyclopedia of Genes and Genomes
P-C	placento-chalazal
iP-C	integumental P-C
nP-C	nucellar P-C
PCD	program cell death process
LCM	laser-capture microdissection
PBS	phosphate buffered saline
OCT	optimum cutting temperature
FDR	false discovery rate
iBAQ	Intensity-based absolute quantification
PCA	principal component analysis
L-GulL	L-gulono-1,4-lactone
Hsp21	heat shock protein21
BAP2	basal layer-type antifungal protein
MALDI-TOF MS	Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry profiling