TABLE 1.

Transcriptional regulation of Arabidopsis genes by volatile organic compounds (VOCs) and their poplar orthologs responsive to ectomycorrhiza symbiosis.

Gene name	Gene function	AGI	Regulation	Host	Treatment	Experimental set-up	Sample tissue	References
GSTU1	Glutathione S-transferase TAU 1, responsive to ME-JA	AT2G29490	Up	P. x canescens	L. bicolor	Pot, in root contact	Leaves	Kaling et al., 2018
			Up	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Ocimene	Rosette leaves, stems, cauline leaves	Godard et al., 2008
GSTU4	Glutathione S-transferase tau 4, involved in defense from necrotrphic pathogens	AT2G29460	Up	P. x canescens	P. involutus	Pot, in root contact	Roots	Luo et al., 2009
			Up	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Ocimene	Rosette leaves, stems, cauline leaves	Godard et al., 2008
JAZ1	JAZ1, involved in jasmonate signaling, defense, wounding. JAZ1 transcript levels rise in response to a jasmonate stimulus.	AT1G19180	Down	P. x canescens	L. bicolor	Pot, in root contact	Leaves	Kaling et al., 2018
			Up	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Ocimene	Rosette leaves, stems, cauline leaves	Godard et al., 2008
JAZ7	Jasmonate-zim-domain protein 7; wounding response	AT2G34600	Up	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Ocimene	Rosette leaves, stems, cauline leaves	Godard et al., 2008
			Down	A. thaliana	1-decene isolated from Trichoderma	Plants in petri dish, 1-decene added	shoots	Lee et al., 2019
JAZ8	Jasmonate-zim-domain protein 8; wounding response	AT1G30135	Down	P. x canescens	L. bicolor	Pot, in root contact	Leaves	Kaling et al., 2018
			Down	A. thaliana	1-decene isolated from Trichoderma	Plants in petri dish, 1-decene added	Shoots	Lee et al., 2019
WRKY40	Probable WRKY transcription factor 40; Pathogen-induced transcription factor, response to chitin, SA, Me-JA	AT1G80840	Up	P. x canescens	P. involutus	pot, in root contact	Roots	Luo et al., 2009
			Up	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Ocimene	Rosette leaves, stems, cauline leaves	Godard et al., 2008
			Down	A. thaliana	1-decene isolated from Trichoderma	Plants in petri dish, 1-decene added	Shoots	Lee et al., 2019
			Up	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Pinene	Leaves	Riedlmeier et al., 2017
SPX1	SPX domain-containing protein 1; response to phosphate starvation, response to Pseudomonas syringae	AT5G20150	up or down (depending on poplar homolog)	P. x canescens	P. involutus	Pot, in root contact	Roots	Luo et al., 2009
				A. thaliana	Rhizobacteria	Bi-compartmented petri dishes, no contact	Seedlings	Wenke et al., 2012
PAP1	Purple acid phosphatase, response phosphate (Pi) and phosphite (Phi), response to non-host bacteria.	AT1G13750	Down	P. x canescens	P. involutus	Pot, in root contact	Roots	Luo et al., 2009
			Up	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Pinene	Leaves	Riedlmeier et al., 2017
BBE8	FAD-binding Berberine family protein, response avirulent Pseudomonas synrigae, response to non-host bacteria	AT1G30700	Up	P. x canescens	P. involutus	Pot, in root contact	Roots	Luo et al., 2009
			Up	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Pinene	Leaves	Riedlmeier et al., 2017
-	Putative β-1,3-endoglucanase, response to nematode, response to fungus	AT4G16260	Up	P. x canescens	L. bicolor	Pot, in root contact	Leaves	Kaling et al., 2018
			Up	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Pinene	Leaves	Riedlmeier et al., 2017
PRX47	Peroxidase superfamily protein, response to oxidative stress	AT4G33420	Down	P. x canescens	L. bicolor	Pot, in root contact	Leaves	Kaling et al., 2018
			Up	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Pinene	Leaves	Riedlmeier et al., 2017
-	Tetratricopeptide repeat (TPR)-like superfamily protein	AT4G37380	Down	P. x canescens	P. involutus	Pot, in root contact	Roots	Luo et al., 2009
			Down	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Pinene	Leaves	Riedlmeier et al., 2017
SIS	Salt Induced Serine rich, response to salt, response to virulent Pseudomonas syringae	AT5G02020	Up	P. x canescens	P. involutus	Pot, in root contact	Roots	Luo et al., 2009
			Up	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Pinene	Leaves	Riedlmeier et al., 2017
KAT5	3-keto-acyl-CoA thiolase 2 precursor, involved in flavonoid biosynthesis	AT5G48880	Up	P. x canescens	L. bicolor	Pot, in root contact	Leaves	Kaling et al., 2018
			Down	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Pinene	Leaves	Riedlmeier et al., 2017
CCT101	Member of ASML2 family of CCT domain proteins, high expression in eds16 mutants (isochorimate synthase for SA synthesis)	AT5G53420	Down	P. x canescens	L. bicolor	Pot, in root contact	Leaves	Kaling et al., 2018
			Down	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Pinene	Leaves	Riedlmeier et al., 2017
CYP94B1	cytochrome P450, family 94, subfamily B, polypeptide 1, JA metabolic process, wounding	AT5G63450	Down	P. x canescens	L. bicolor	Pot, in root contact	Leaves	Kaling et al., 2018
			Down	A. thaliana	Monoterpene isolated from plants	Pot, exposed to Pinene	Leaves	Riedlmeier et al., 2017

The table summarizes differentially expressed genes overlapping between VOC and EMF response. AGI shows Arabidopsis Gene Identity for the best poplar match. Treatment indicates the EMF used for plant inoculation or the VOC to which plants were exposed to. Experimental set-up indicates non-sterile conditions when plants were grown in pots or sterile growth systems. The gene functions were taken from the TAIR data base (https://www.arabidopsis.org/) and response were also searched via the eFP browser implemented in TAIR.