Protein sequences of AtPARC6, AtPDV1, and their homologs in other species, including Populus trichocarpa, Nicotiana tabacum, Oryza sativa, Zea mays, and Physcomitrium (Physcomitrella) patens et al., were downloaded from National Center for Biotechnology Information (NCBI) database through BLAST search (https://blast.ncbi.nlm.nih.gov/Blast.cgi) (SI Appendix, Table S1). Multiple protein sequence alignment was performed using BioEdit (https://bioedit.software.informer.com/), and phylogeny was analyzed using the neighbor-joining method of MEGA7 (https://www.megasoftware.net). Bootstrap values at the corresponding nodes were based on 1,000 bootstrap replications. Wenxiang diagram of protein sequences was performed as before (34 (link), 35 (link)).