Expression of the ICE1 Genes of the Aronnik Korolkov Plant: Determination of Resistance to Freezing
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Abstract
The impact of low temperature on the Korolkov Aronnik plant triggers the expression of the CBF family of transcription factors, which, in turn, activate many downstream genes that confer plant resistance to cold and frost. The article will consider the identification of the ICE1 gene (inducer of CBF 1 expression) by Aronnik Korolkov, an upstream transcription factor that regulates the transcription of CBF genes during cold. A mutation in the wild Aronnik Korolkov blocks the expression of CBF3 and reduces the expression of many genes located downstream of CBFs, which leads to a significant decrease in plant resistance to cold and freezing. The ICE1 genes of the Aronnik Korolkov plant encode the MYC-like transcription activator BHLH. ICE1 binds specifically to MYC recognition sequences in the CBF3 promoter.
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