ABC	ATP binding cassette
AHL	N-Acyl homoserine lactones
AI-2	autoinducer-2
AI-3	autoinducer-3
AM	arbuscular mycorrhizae
AMP(1)	antimicrobial peptide
AMP(2)	5’-adenosine mono-phosphate
ATP	5’-adenosine tri-phosphate
BMP	bone morphogenic protein
CAM	cell adhesion molecule
cAMP	3’5’cyclic-AMP
CBP	CREB binding protein
CLR	C-type lectin receptor
CREB	cAMP-responsive element binding protein
CRP	cyclic-AMP receptor protein
DAMP	damage-associated molecular pattern
ECD	extracellular domain
eDNA	extracellular DNA
EM	ectomycorrhizae
EV	extracellular vesicle
FGF	fibroblast growth factor
FSH	follicle-stimulating hormone
GnRH	gonadotropin-releasing hormone
GPCR	G protein-coupled receptor
Hh	hedgehog
HSL	homoserine lactone
ICD	intracellular domain
IMD	immune deficiency pathway
JAK	janus kinase
LCO	lipochitooligosaccharide
LH	luteinizing hormone
LRR	leucine-rich repeat
LysM-LK	lysin-motif receptor-like kinase
MAPK	Mitogen-activated protein kinases
MAPKK	Mitogen-activated protein kinases
MAPKKK	Mitogen-activated protein kinases
NO	nitrogen oxide
Nod	nodulation factor
PGN	peptidoglycan
PGRP	peptidoglycan-binding receptor protein
PRR	pattern recognition receptor
PTS	phosphotransferase system
QS	quorum sensing
RLK	receptor-like kinase
RLP	receptor-like protein
TCS	receptor-histidine-kinase two-component system
TNT	tunneling nanotubes
TLR	toll-like receptor
TNF	tumor-necrosis factor
VOC	volatile organic compound
Wnt	vertebrate homolog of drosophila Wingless