. 2021 Jan 9;9(1):141. doi: 10.3390/microorganisms9010141

Table 1.

Relevant characteristics of donor and recipient strains.

E. coli Strain	Notable Characteristics	Selected Plasmidic Virulence Factors	Source
Recipients
$χ$ 7122	APEC O78:K80:H9, nal^R, str^R, lac⁺	cvaC, iss, iutA, iroN	[35]
$χ$ 7368	Plasmids-cured $χ$ 7122: $Δ$ pChi7122-1 $Δ$ pChi7122-2 $Δ$ pChi7122-3, nal^R, lac⁺	−	[33]
$χ$ 6092	E. coli K-12, tet^R, lac⁻	−	[36]
MG1655	E. coli K-12, nal^R, lac⁺	−	[37]
HS-4	Human commensal E. coli, rif^R, lac⁻	−	[38]
Donor
IA-EC-0010 (CC)	Lac⁺, ctx^R, caz^R, col^R	iutA	This Study
IA-EC-0018 (CC)	Lac⁺, ctx^R, caz, col^R	iss, iutA	This Study
IA-EC-0075 (CF)	Lac⁺, ctx^R, caz^R	iutA	This Study
IA-EC-0076 (CF)	Lac⁺, ctx^R	iutA	This Study
Transconjugants
$χ$ 7122 (pIA-EC-0010-2)	nal^R, str^R, ctx^R, caz^R lac⁺, pIA-EC-0010-2 (Donor IA-EC-0010)	cvaC, iss, iutA, iroN	This Study
$χ$ 7368 (pIA-EC-0010-2)	nal^R, ctx^R, caz^R, lac⁺, pIA-EC-0010-2 (Donor IA-EC-0010)	−	This Study
$χ$ 7122 (pIA-EC-0018-2)	nal^R, str^R, ctx^R, caz^R lac⁺, pIA-EC-0018-2 (Donor IA-EC-0018)	cvaC, iss, iutA, iroN	This Study
$χ$ 7368 (pIA-EC-0018-2)	nal^R, ctx^R, caz^R, lac⁺, pIA-EC-0018-2 (Donor IA-EC-0018)	−	This Study
$χ$ 6092 (pIA-EC-0018-2)	tet^R, ctx^R, caz^R,lac⁻, pIA-EC-0018-2 (Donor $χ$ 7122 (pIA-EC-0018-2)	−	This Study

Notes: nal, nalidixic acid; str, streptomycin; tet, tetracycline; ctx, cefotaxime; caz, ceftazidime; col, colistin; rif, rifampicin; R, resistance; lac, lactose fermentation; + or − positive or negative; CC, conventional cage; CF, cage-free.