Table 1. Primer sequences of genes analyzed with qRT-PCR.

Organism	Gene		Sequence
M. truncatula	Histone3-like (Medtr4g097170.1)	fwd	5′-CTT TGC TTG GTG CTG TTT AGA TGG-3′
		rev	5′-ATT CCA AAG GCG GCT GCA TA-3′
M. truncatula	MtPT4	fwd	5′-ACA AAT TTG ATA GGA TTC TTT TGC ACG T-3′
		rev	5′-TCA CAT CTT CTC AGT TCT TGA GTC-3′
R. irregularis	RiBTub (AF394773)	fwd	5′-CCA ACT TAT GGC GAT CTC AAC A-3′
		rev	5′-AAG ACG TGG AAA AGG CAC CA-3′
A. euteiches	5.8S rRNA (AY683887)	fwd	5′-TGT CTA GGC TCG CAC ATC GA-3′
		rev	5′-AGT GCA ATA TGC GTT CAA CGT TT-3′