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/