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. 2016 Jun 13;7:835. doi: 10.3389/fpls.2016.00835

Table 1.

Strains and plasmids used.

Strains (or plasmids)	Species	Description	References
1021	Sinorhizobium meliloti	Str^r derivative from strain 2011. Mutualist	Meade et al., 1982
AK83	S. meliloti	Lacks part of the microaerophilic gene set on pSymA-homolog megaplasmid. Non-mutualist	Galardini et al., 2011
BL225C	S. meliloti	Mutualist	Galardini et al., 2011
BM102	S. meliloti	Rif^r derivative of S. meliloti AK83. Non-mutualist	This work
BM267	S. meliloti	Rif^r derivative of S. meliloti BL225C. Mutualist	This work
BM685	S. meliloti	S. meliloti AK83 pBHR mRFP (Rif^r Tet^r). Non-mutualist	This work
BM687	S. meliloti	S. meliloti 1021 pBHR mRFP (Str^r Tet^r). Mutualist	This work
BM325	S. meliloti	S. meliloti AK83 pHC60 (Rif^r Tet^r). Non-mutualist	This work
BM257	S. meliloti	S. meliloti 1021 pHC60 (Str^r Tet^r). Mutualist	This work
BM286	S. meliloti	S. meliloti BL225C pHC60 (Rif^r Tet^r). Mutualist	This work
S17-1 λpir	Escherichia coli	Tp^r, Sm^r, recA, thi, hsdR^-M⁺, RP4::2-Tc::Mu::Km::Tn7, λpir lysogen	Simon et al., 1983
BM679	E. coli	E. coli S17-1 λpir pBHR mRFP (Tet^r)	This work
BM266	E. coli	E. coli S17-1 λpir pHC60 (Tet^r)	This work
pBHR mRFP		Constitutive expression of RFP, Tet^r	Smit et al., 2005
pHC60		Constitutive expression of GFP, Tet^r	Cheng and Walker, 1998