Multifaceted Roles of bHLH Phosphorylation in Regulation of Plant Physiological Functions

doi:10.13560/j.cnki.biotech.bull.1985.2022-0775

Abstract

Abstract:

bHLH（basic Helix-Loop-Helix）is the second largest class of transcription factors in plants and plays an important role in the transcriptional regulatory network of plant growth and development and stress responses. Protein phosphorylation as a quick and flexible posttranslational modification affects the transcriptional activity, localization, protein interaction and stability of transcription factors. To understand the multifaceted roles of bHLH phosphorylation, here we review recent advances in the phosphorylation of bHLH family members, including the structure, classification, and function of the bHLH transcription factors, as well as the changing of their physiological and biochemical function caused by mutations at the phosphorylation sites, aiming to provide theoretical basis for improving agronomic traits such as nutrient use efficiency, quality and stress tolerance from the perspective of phosphorylation regulation.

Key words: transcription factor bHLH, phosphorylation, physiological function

LIU Cheng-xia, SUN Zong-yan, LUO Yun-bo, ZHU Hong-liang, QU Gui-qin. Multifaceted Roles of bHLH Phosphorylation in Regulation of Plant Physiological Functions[J]. Biotechnology Bulletin, 2023, 39(3): 26-34.

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