Table I. Phenotypes of transformants obtained after the introduction of self-replicative plasmids containing different constructs of the carB gene into the wild-type strain.

Plasmid	Transformants		Total	Silencing frequency (%)
	Albino	Bright yellow
pMAT647	51	1561	1612	3.16
pMAT754	12	373	385	3.12
pMAT650	112	964	1076	10.4
pLEU4	0	1758	1758	0

Plasmid pLEU4 was used as control. The colour of the transformants was observed after 48 h in the dark, followed by 24 h under illumination with blue light.