Phylogenetic tree of MADS proteins from different plant species. The tree was constructed with neighbor-joining algorithm in MEGA 7. IiSHP2 is framed in red box. SHP1, NP_001190130.1; SHP2, NP_850377.1; CsAGL5, XP_010506124.1; EsAGL5, XP_024016862.1; LcSHP1, CBY05404.1; LcSHP2, CBY05405.1; RsAGL5, XP_018483390.1; BnSHP1, NP_001302702.1; PrtSHP, AEI01160.1; TrSHP, ABB59995.1; PLENA, AAB25101.1; FAR, BAI68392.1; AG, NP_567569.3; TrAG, ABB59994.1; BnAG, XP_013719485.1; EsAG, XP_024005545.1; CbAG, ACD76828.1; CrAG, XP_023633847.1; STK, NP_001078364.1; PeAGL11, XP_011031538.1; RsAGL11, XP_018473770.1; BnAGL11, XP_013732865.1; EsAGL11, XP_006397127.1; FUL, NP_568929.1; TrFUL, ABB59991.1; AP1, NP_177074.1; TrAP1, ABB59990.1