AT-hook Genes and Their Role in the Regulation of Flowering in Plants: A Review

doi:10.11924/j.issn.1000-6850.casb2020-0788

Abstract

Abstract:

AT-hook gene is a kind of genes that encode the proteins specifically binding to the sequence rich in AT bases in DNA minor groove. The encoded protein contains DNA binding protein motif centered on three amino acid residues of glycine-arginine-proline (GRP). In this paper, the characteristics and functions of AT-hook genes and their regulatory roles in flowering in Arabidopsis and rice were reviewed. AT-hook genes are not only involved in plant growth and development, stress and hormone signaling responses, but also play an important regulatory role in the formation of flower organs and the flowering of plants. The expression level of this gene is the highest in flower tissues, which affects the expression of the florin genes, and its encoding protein can regulate the transcription of genes related to flowering at the epigenetic level by changing chromatin status or recruiting protein complex, thus affecting the flowering of plants. AT-hook gene may provide a new perspective for epigenetic regulation of plant flowering.

Key words: AT-hook gene, rice, Arabidopsis thaliana, development regulation, flowering regulation

CLC Number:

Li Jinxuan, Guo Min, Wang Jiafeng, Yang Guili. AT-hook Genes and Their Role in the Regulation of Flowering in Plants: A Review[J]. Chinese Agricultural Science Bulletin, 2021, 37(27): 77-81.

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