Host: The Japanese Society of Plant Physiologists
Pages 0009
With the availability of rice genomic sequence, full length cDNA sequence (35,187 clones), many ESTs and expression profiling using 22K oligoarray system, we focused our holistic approach to study the plant specific transcription factors- the NAC (NAM, ATAF and CUC). In rice genome, NAC has been predicted in 124 loci and 112 loci had FL-cDNA or EST evidence. 24 NAC genes were mapped as tandem duplicated genes and 16 pairs of NAC genes were assigned to TIGR segmental duplication blocks. Based on the phylogeny, NAC proteins have been classified into two groups (Group I and Group II). All the characterized NAC proteins fell into Group I. Group II included many of the predicted NAC proteins from tandem duplicated genes. Phylogeny of NAC genes revealed tight grouping of stress regulated NAC members. Expression profiling with 22K oligoarray system showed forty six NAC genes are differentially regulated under several stress conditions.
