Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g29720	Flavoenzyme involved in polyamine back-conversion.	A plant spermine oxidase/dehydrogenase regulated by the proteasome and polyamines.; 2014; DOI: 10.1093/jxb/eru016; PMID: 24550437; https://pubmed.ncbi.nlm.nih.gov/24550437/ | Polyamine Oxidase5 Regulates Arabidopsis Growth through Thermospermine Oxidase Activity.; 2014; DOI: 10.1104/pp.114.242610; PMID: 24906355; https://pubmed.ncbi.nlm.nih.gov/24906355/ | Reducing Cytoplasmic Polyamine Oxidase Activity in Arabidopsis Increases Salt and Drought Tolerance by Reducing Reactive Oxygen Species Production and Increasing Defense Gene Expression.; 2016; DOI: 10.3389/fpls.2016.00214; PMID: 26973665; https://pubmed.ncbi.nlm.nih.gov/26973665/ | The Arabidopsis polyamine oxidase/dehydrogenase 5 interferes with cytokinin and auxin signaling pathways to control xylem differentiation.; 2017; DOI: 10.1093/jxb/erw510; PMID: 28199662; https://pubmed.ncbi.nlm.nih.gov/28199662/
Rice	Os01g0710200	Flavoenzyme involved in polyamine back-conversion.	Oryza sativa polyamine oxidase 1 back-converts tetraamines, spermine and thermospermine, to spermidine.; 2014; DOI: 10.1007/s00299-013-1518-y; PMID: 24105034; https://pubmed.ncbi.nlm.nih.gov/24105034/