Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g35420	Involved in the biosynthesis of hydroxylated tetraketide compounds that serve as sporopollenin precursors (the main constituents of exine).	An anther-specific dihydroflavonol 4-reductase-like gene (DRL1) is essential for male fertility in Arabidopsis.; 2009; DOI: 10.1111/j.1469-8137.2008.02692.x; PMID: 19054337; https://pubmed.ncbi.nlm.nih.gov/19054337/ | Analysis of TETRAKETIDE α-PYRONE REDUCTASE function in Arabidopsis thaliana reveals a previously unknown, but conserved, biochemical pathway in sporopollenin monomer biosynthesis.; 2010; DOI: 10.1105/tpc.110.080036; PMID: 21193572; https://pubmed.ncbi.nlm.nih.gov/21193572/
Arabidopsis	At1g15950	Involved in the latter stages of lignin biosynthesis.	Cloning and characterization of irregular xylem4 (irx4): a severely lignin-deficient mutant of Arabidopsis.; 2001; DOI: 10.1046/j.1365-313x.2001.01021.x; PMID: 11389761; https://pubmed.ncbi.nlm.nih.gov/11389761/ | Reassessment of effects on lignification and vascular development in the irx4 Arabidopsis mutant.; 2005; DOI: 10.1016/j.phytochem.2004.12.016; PMID: 16153410; https://pubmed.ncbi.nlm.nih.gov/16153410/ | Redirection of the phenylpropanoid pathway to feruloyl malate in Arabidopsis mutants deficient for cinnamoyl-CoA reductase 1.; 2008; DOI: 10.1007/s00425-007-0669-x; PMID: 18046574; https://pubmed.ncbi.nlm.nih.gov/18046574/ | The simultaneous repression of CCR and CAD, two enzymes of the lignin biosynthetic pathway, results in sterility and dwarfism in Arabidopsis thaliana.; 2011; DOI: 10.1093/mp/ssq045; PMID: 20829305; https://pubmed.ncbi.nlm.nih.gov/20829305/
Rice	Os01g0639200	Involved in defense response.	Rice Snl6, a cinnamoyl-CoA reductase-like gene family member, is required for NH1-mediated immunity to Xanthomonas oryzae pv. oryzae.; 2010; DOI: 10.1371/journal.pgen.1001123; PMID: 20862311; https://pubmed.ncbi.nlm.nih.gov/20862311/
Rice	Os02g0808800	Involved in the latter stages of lignin biosynthesis.	Cinnamoyl-CoA reductase, a key enzyme in lignin biosynthesis, is an effector of small GTPase Rac in defense signaling in rice.; 2006; DOI: 10.1073/pnas.0509875103; PMID: 16380417; https://pubmed.ncbi.nlm.nih.gov/16380417/