Table 3.

Molecular effectors in tissue- and organ-specific light signaling

Molecular effector	Function	Tissue localization of response	Photoregulation	Refs.
14-3-3 μ	Interaction with COa	Leaf tissue	R	117
14-3-3 υ	Interaction with CO	Leaf tissue	R	117
ACT7	Actin	Upregulated in hypocotyl	Wb	112
COP1	Negative regulator	Hypocotyl	W	110
CUE1	Unknown	Mesophyll cells	R/B	118
DET1	Transcriptional repressor	Leaves, flowers	W	111
Dof1	Transcriptional activator	Leaves	W	114
OBP3	Transcriptional activator	Vascular tissue	W/R/B	115
PKS1	Positive regulator	Roots	R	88, 116
TUB1	Tubulin	Downregulated in hypocotyl	FR (phyA), R (phyB)	113

^aCO, CONSTANS

^bW, white light; all other abbreviations in this column are as in Table 1.