Two NAC transcription factor family members are up-regulated in soybean pollen, suggesting a role of this family of proteins in the regulation of pollen genes, a function that to the best of our knowledge has not been reported for this class of genes.
Two NAC domain RNAs, Nam 9, and two WRKY transcription factors contain both PTB and Pumilio binding motifs in their DSS (Table 7).> Compared to a genomic study, transcriptome analysis is more informative as it provides a snapshot of processes of physiology and development.
Among NAC candidates induced by low temperature, one SSR markers seemed to be closely linked to two NAC candidates (CL4107.Contig2 and CL2628.Contig1): located in the 5′ untranslated region of the NAC candidate (CL4107.Contig2) and only have 79.8 kb physical distance away from CBF candidate.
In this study, we cloned two NAC transcriptional factor genes, ZmNST3 and ZmNST4, and analyzed their functions in maize secondary wall formation process.
The other two NAC members are ANAC19 and ANAC47, both members of the AtNAC3 group.
VND6 and VND7, two NAC family genes, promote xylem vessel cell formation [ 7].
These two NAC proteins are interesting candidates for a regulatory role in DNA damage responses in plants.
In contrast, only one NAC gene was found on LG XVIII and two NAC genes were on LG XVII.
The genes in group C were enriched in transcription regulation, including two NAC, one MYB, three CCT/B-box zinc finger proteins, and one HLH type TFs.
We observed significant regulation of two NAC homologs as well as GST, R2R3-MYB, and LEA genes following C. ribicola infection.
However, unlike groups I and V, only two NAC TFs were found to interact with the two sequences tested (i.e. GCTGCCGGAGA and GCCACGTCAGC), with one (At3g12910) being identical for both sequences (Table 3).
