Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At2g28160	Transcription factor.	The essential basic helix-loop-helix protein FIT1 is required for the iron deficiency response.; 2004; DOI: 10.1105/tpc.104.024315; PMID: 15539473; https://pubmed.ncbi.nlm.nih.gov/15539473/ | AtbHLH29 of Arabidopsis thaliana is a functional ortholog of tomato FER involved in controlling iron acquisition in strategy I plants.; 2005; DOI: 10.1038/sj.cr.7290331; PMID: 16117851; https://pubmed.ncbi.nlm.nih.gov/16117851/
Arabidopsis	At5g57150	Transcription factor bHLH35.	No verified direct reference in this release
Arabidopsis	At4g29930	Transcription factor bHLH27.	No verified direct reference in this release
Arabidopsis	At2g16910	Transcription factor.	No verified direct reference in this release
Rice	Os04g0381700	Transcription factor involved in positive regulation of genes involved in strategy II iron acquisition, including genes for mugineic acid (MA) family phytosiderophores biosynthesis, and genes involved in S-adenosylmethionine cycle and iron transport.	A transcription factor OsbHLH156 regulates Strategy II iron acquisition through localising IRO2 to the nucleus in rice.; 2020; DOI: 10.1111/nph.16232; PMID: 31574173; https://pubmed.ncbi.nlm.nih.gov/31574173/