Table III.

Strains and plasmids

Strain or Plasmid	Relevant Characteristics	Source or Reference
S. meliloti
Rm1021	Wild type, SU47 str21	Meade et al. (1982)
SL44	Rm1021 ΔnodD1ABC	Fisher et al. (1988)
GMI3253	Rm1021 ΔnodA	Debellé et al. (1996)
JAS108	Rm1021 nodF∷Tn5-233, Spr a	J.A. Swanson (unpublished data)
JAS115	Rm1021 nodE∷Tn5-233, Spr	J.A. Swanson (unpublished data)
GMI6436	Rm2011 nodL∷Tn5, Nmr b	Ardourel et al. (1995)
RJW13	Rm1021 nodL∷Tn5, Nmr	This study
JT210	Rm1021 nodH∷Tn5, Nmr	Swanson et al. (1987)
912T	Rm1021 nodH∷Tn5, Nmr	J. Ogawa (unpublished data)
RJW25	912T pRmE65	This study
GMI3032	Rm2011 ΔnodF nodL∷Tn5, Nmr	Ardourel et al. (1994)
RJW14	Rm1021 ΔnodF nodL∷Tn5, Nmr	This study
R. leguminosarum bv viciae
A34	Wild type, 8401 pRL1JI	Downie et al. (1983)
RJW1	A34 pJT5	This study
RJW18	A34 pRmS210	This study
E. coli
BL21 DE3	F−ompT, hsdSR (rB−mB−) gal dcm (DE3)	Studier and Moffatt (1986)
DKR 61	BL21 DE3 pRmE2 pRmJT5	This study
DKR 63	BL21 DE3 pRmE2	This study
DKR 64	BL21 DE3 pRmJT5	This study
Plasmids
pRmE65	nodD3 Expressed under control of trp promoter in pTE3	Fisher et al. (1988)
pRmJT5	nodFEGHPQ1 syrM nodD3 in pLAFR1	Swanson et al. (1987)
pRmS210	nodH∷Tn5 in pJT5	Swanson et al. (1987)
pRmE2	nodABC in pAD10	Egelhoff and Long (1985)
pRK600	Helper plasmid derived from pRK290	Glazebrook and Walker (1991)
Phage
N3	S. meliloti-transducing phage	Martin and Long (1984)

^aSp^r, Spectinomycin resistant. 

^bNm^r, Neomycin resistant.