Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At2g02950	May be responsible for light-regulated cytoplasmic sequestration of phytochromes or may be a negative regulator of phytochrome B signaling.	PKS1, a substrate phosphorylated by phytochrome that modulates light signaling in Arabidopsis.; 1999; DOI: 10.1126/science.284.5419.1539; PMID: 10348744; https://pubmed.ncbi.nlm.nih.gov/10348744/ | PHYTOCHROME KINASE SUBSTRATE 1 is a phototropin 1 binding protein required for phototropism.; 2006; DOI: 10.1073/pnas.0603799103; PMID: 16777956; https://pubmed.ncbi.nlm.nih.gov/16777956/ | PHYTOCHROME KINASE SUBSTRATE1 regulates root phototropism and gravitropism.; 2008; DOI: 10.1104/pp.107.106468; PMID: 18024556; https://pubmed.ncbi.nlm.nih.gov/18024556/ | The Arabidopsis PHYTOCHROME KINASE SUBSTRATE2 protein is a phototropin signaling element that regulates leaf flattening and leaf positioning.; 2010; DOI: 10.1104/pp.109.150441; PMID: 20071603; https://pubmed.ncbi.nlm.nih.gov/20071603/
Arabidopsis	At1g14280	Acts predominantly in the phot1 pathway.	No verified direct reference in this release
Arabidopsis	At1g18810	Probably involved in the phytochrome signaling pathway.	No verified direct reference in this release
Arabidopsis	At5g04190	Modulates phytochrome-mediated control of hypocotyl growth orientation.	No verified direct reference in this release