Table 1.

Bacterial strains used in this study.

Strain             Relevant characteristicsa			Reference
Bacterial strains
Pseudomonas chlororaphis
PCL1606		Wild-type, isolated from Spanish avocado rhizosphere, HPR +++	Cazorla et al., 2006
darA-		PCL1606 derivative insertional mutant in darA gene, HPR -, Kmr	Calderón et al., 2013
darB-		PCL1606 derivative insertional mutant in darB gene, HPR -, Kmr	Calderón et al., 2013
darC-		PCL1606 derivative insertional mutant in darC gene, HPR +, Kmr	Calderón et al., 2013
darS-		PCL1606 derivative insertional mutant in darS gene, HPR ++, Kmr	Calderón et al., 2013
darR-		PCL1606 derivative insertional mutant in darR gene, HPR ++, Kmr	Calderón et al., 2013
GacS-		PCL1606 derivative insertional mutant in gacS gene, HPR -, Kmr	Cazorla et al., 2006
ΔdarB		PCL1606 derivative deletional mutant in darB gene, HPR -	This study
ComB		ΔdarB transformed with the plasmid pCOMB. HPR +++, Gmr and Kmr	This study
Fungal strains
Fusarium oxysporum f. sp. radicis-lycopersici
ZUM2407		Causes crown and foot rot of tomato	IPO-DLO Wageningen, The Netherlands
Rosellinia necatrix
CH53		Wild-type, isolated from avocado root rot, High virulence	Pérez-Jiménez, 1997
Plasmids
pCOMB		darB gene cloned into pBBR1MCS-5 used for complementing mutation on strain ΔdarB, Gmr	Calderón et al., 2013
pBAH8		pBBR1MCS-5-containing PA1/04/03-gfp mut3-To-T1; Gmr	Huber et al., 2002
pGEM®-T Easy Vector		Linearized vector with single 3’-terminal thymidine at both ends	Promega

^aHPR: Production of 2-hexyl, 5-propyl resorcinol detected by thin-layer chromatography plates (Cazorla et al., 2006). +++ = HPR production level of the wild-type strain P. chlororaphis PCL1606; ++ = ½ of HPR production; + = ¼ of HPR production; - = no production (Calderón et al., 2014a). Antibiotic resistance: Km^r = Kanamycin, Gm^r = Gentamycin. IPO-DLO: Institute for Plant Protection – Agriculture Research Department.