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Table 1 Group wise distributions and predicted functions of PpNAC transcription factors

From: Genome wide identification and predicted functional analyses of NAC transcription factors in Asian pears

GROUP# Subgroups No. of genes Exons # Domain# Best Smart hit Submitter description Reference
GROUP1 1A 7 3 1,4,2,5,3,6,7 NAC100 Cell expansions [40]
1B 3 1,2,5,3,6,7 CUC2 Regeneration in root explants [60]
1C 2 1,4,2,5,3,6,7 CUC3 Anthocyanin biosynthesis in peach [16]
1D 3 1,4,2,5,7 CUC1   
1E 3 1,4,2,5,3,6,7 CUC2 LIKE   
1F 4 1,4,2,5,3,6,7 NAC21/22   
1G 7 1,4,2,5,3,6,7 BEARSKIN2 LIKE Root cap maturation [49]
1H 11 1,4,2,5,3 VND Vascular and secondary cell wall formation [50]
Subtotal 40  
GROUP2 2A 13 3 1,4,2,5,3,6,7 JUNGBRUNNEN 1-like isoform GA and BR signaling [41]
2B 8 6 1,4,2,5,3,6,7 NAC28   
2C 5 5 1,4,2,5,3,6,7 NTM1, TCV Salt stress response [42]
2D 8 5 1,4,2,5,3,6,7 NTL 8 Seed germination during salt stress [42]
Subtotal 34  
GROUP3 3A 6 3 1,4,2,5,3,6,7 NAC83   
3B 6 3 1,4,2,5,3,6,7 NAC2 Stamen development in arabidopsis [61]
3C 3 2 1,4,2,5,3,6,7 NARS1 Embryogenesis [62]
3D 8 3 1,4,2,5,3,6 AtAF1 Salt stress and ABA signaling in rice [63]
Subtotal 23  
GROUP4 4A 10 3 1,5,3,7 NAC67 Group4 genes in PpNAC and MdNAC TFs showed independent evolution with AtNAC TFs.
Anthocyanin accumulation in pear (Present Study)
4B 7 6 1,4,2,5,3,6 NTM1 like
4C 3 6 1,4,2,5,3,7 NAC isoform X1
4D 3 6 1,4,2,5,3,6,7 NAC83 like
4E 7 4 1,4,5,3,6,7 NAC14
Subtotal 30    
GROUP5 5A 10 3 1,4,5,3,6,7 AtNAP Fruit and Leaf senescence [64]
5B 14 3 & 8 1,2,6,7 AtVNI2 Abscisic acid signaling [65]
Subtotal 24   
GROUP6 6A 22 1, NO INTRON 1,8,9,10,6,7 NAC41/CUC1 like Group6 genes in PpNAC and MdNAC TFs showed independent evolution with AtNAC TFs
6B 10 2 1,8,2,6,7 NAC30
6C 2 3 1,7 NAC30 like
Subtotal 34   
TOTAL 185