The expression changes of transcription factor genes in two rice cultivars with different chlorophyll content were analyzed under low nitrogen stress by the Agilent rice genome array. The results showed that the expression levels of 53 transcription factor genes (35 downregulated genes and 18 upregulated at the transcription level) in flag leaf of supergreen rice Shennong 196(SN196) and 27 (21 downregulated and 6 upregulated at the transcription level) in flag leaves of Toyonishiki were affected by low nitrogen stress.48 genes from SN196 and 22 from Toyonishiki were cultivarspecial in response to low nitrogen stress.There were five transcription factor genes in response to low nitrogen stress in SN196 and Toyonishiki, with 1 upregulated and 4 downregulated at the transcription level, respectively. Expression of transcription factor genes were affected by low nitrogen stress in flag leaf, and there were genes of cultivar specialresponse as well as overlap between SN196 and Toyonishiki, respectively.Distribution of low nitrogen stress regulating genes on the rice chromosomes of the two cultivars was different.
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