Table 2.

Photomorphogenic mutations introgressed into cv. Micro-Tom

Mutants	Mutation	Gene function	Origin	Reference
aurea (au)	Deficiency in phytochrome chromophore biosynthesis	Defective for the phytochromobilin synthase gene	LA3280 cv. Ailsa Craig	[31]
yellow green 2 (yg2)	Deficiency in phytochrome chromophore biosynthesis	Probably defective for the heme oxygenase gene	LA2514 cv. unknown	[32]
high pigment 1 (hp1)	Increased response to light	Defective for a gene homologous to DDB1A of Arabidopsis, which codes a protein interacting with DET1 (HP2), a repressor of photomorphogenesis	LA3004 cv. Rutgers	[35]
high pigment 2 (hp2)	Increased response to light	Defective for a gene homologous to DET1 of Arabidopsis, a negative repressor of photomorphogenesis	LA2451 cv. Manapal	[36]
atroviolacea (atv)	Increased response to light	Natural variation from S. cheesmaniae, probably a non-functional allele of a negative regulator of photomorphogenesis	LA0797 Hybrid	[38]
Intense pigment (Ip)	Increased response to light	Natural variation from S. chmielewskii, probably a positive regulator of light response, whose tomato allele is non-functional	LA1563 Hybrid	[38]