Table 1.

List of lettuce genotypes used to evaluate the natural genetic variability regarding the plant response to Salmonella enterica Typhimurium 14028s and Escherichia coli O157:H7.

Species	Genotype/lettuce type	Accession number	Life cycle1	Plant disease traits
				Resistance		Susceptibility
				Pathogen	Reference(s)	Pathogen	Reference(s)
Lactuca sativa L. var. crispa L.	Salinas/Iceberg	14G1846-1	Long	Dieback (caused by two viruses from the family Tombusviridae)	Grube and Ochoa (2005); Simko et al. (2009)	Lettuce big-vein associated virus	Ryder and Robinson (1995)
				Fusarium oxysporum f.sp. lactucae race 1	McCreight et al. (2005)	Sclerotinia minor	Hayes et al. (2010)
				Fusarium oxysporum f.sp. lactucae	Scott et al. (2010)	Verticillium dahliae	Vallad and Subbarao (2008)
						Bremia lactucae	Grube and Ochoa (2005); Simko et al. (2014)
L. sativa L. var. crispa L.	Emperor/Iceberg	14G11-1	Long
L. sativa L. var. crispa L.	La Brillante/Batavia	13G637-2	Short	Dieback	Simko et al. (2009)	.
				Lettuce big-vein associated virus	Ryder and Robinson (1995)
				Bremia lactucae	Simko et al. (2015)
				Xanthomonas campestris pv. vitians	Hayes et al. (2014)
				Verticillium dahliae	Vallad and Subbarao (2008)
L. sativa L. var. acephala Dill.	Lollo Rossa/Red loose leaf	10G11-2	Short	Xanthomonas campestris pv. vitians	Hayes et al. (2014)	Dieback	Simko et al. (2009)
				Fusarium oxysporum f.sp. lactucae	Scott et al. (2010)
L. sativa L. var. acephala Dill.	Red Tide/Red loose leaf	10G12-2	Short	Sclerotinia sclerotiorum	Hayes et al. (2010)	Dieback	Simko et al. (2009)
						Bremia lactucae	Simko et al. (2014)
L. sativa L. var. acephala Dill.	Grand Rapids/Green loose leaf	13G1033-1	Short	Dieback	Grube et al. (2003)
				Bremia lactucae	Grube and Ochoa (2005)
L. sativa L. var. longifolia (Lam.) Janchen	Green Towers/Romaine	14G388-2	Medium	Sclerotinia sclerotiorum	Hayes et al. (2010)	Dieback	Grube et al. (2003); Simko et al. (2009)
						Bremia lactucae	Grube and Ochoa (2005)
						Phoma exigua	Grube et al. (2003)
L. sativa L. var. capitata (L.) Janchen	Bibb/Butterhead	15G6-1	Medium	Dieback	Simko et al. (2009)	Sclerotinia sclerotiorum	Whipps et al. (2002)
L. sativa L.	PI 251246/Oilseed	13G640-1	Very short	Dieback	Simko et al. (2009)
				Sclerotinia sclerotiorum	Whipps et al. (2002); Hayes et al. (2010)
L. serriola L.	Serriola I/Prickly lettuce	12G239-1	Short
L. serriola L.	Serriola II/Prickly lettuce	UC23US96	Short			Bremia lactucae	Simko et al. (2014)

¹Relative differences in life cycle (from seed to seed) under the same environmental conditions. Long = 5–6 months, Medium = 4–5 months, Short = 3–4 months, and Very Short <3 months. Note that all L. sativa genotypes, except PI 251246/Oilseed, are commercial cultivars of lettuce.