Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 22, Issue 13, Pages -Publisher
MDPI
DOI: 10.3390/ijms22137152
Keywords
basic helix-loop-helix (bHLH); transcription factor; cross-talk; plant growth and development
Funding
- National Natural Science Foundation of China [31300204]
- Shaanxi Provincial Science and Technology Department [2019JQ-326]
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The bHLH transcription factor family in plants is involved in regulating various physiological processes such as biosynthesis, metabolism, and plant hormone signaling by forming dimers. They play important roles in plant growth and development, stress responses, and signaling networks.
The basic helix-loop-helix (bHLH) transcription factor family is one of the largest transcription factor gene families in Arabidopsis thaliana, and contains a bHLH motif that is highly conserved throughout eukaryotic organisms. Members of this family have two conserved motifs, a basic DNA binding region and a helix-loop-helix (HLH) region. These proteins containing bHLH domain usually act as homo- or heterodimers to regulate the expression of their target genes, which are involved in many physiological processes and have a broad range of functions in biosynthesis, metabolism and transduction of plant hormones. Although there are a number of articles on different aspects to provide detailed information on this family in plants, an overall summary is not available. In this review, we summarize various aspects of related studies that provide an overview of insights into the pleiotropic regulatory roles of these transcription factors in plant growth and development, stress response, biochemical functions and the web of signaling networks. We then provide an overview of the functional profile of the bHLH family and the regulatory mechanisms of other proteins.
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