Conserved Hierarchical Gene Regulatory Networks for Drought and Cold Stress Response in

Overview

Journal Front Plant Sci

Date 2023 May 1

PMID 37123838

Authors

Weijie Xu

Haiying Ren

Xingjiang Qi

Shuwen Zhang

Zheping Yu

Jianbo Xie

Affiliations

Soon will be listed here.

Abstract

Stress response in plant is regulated by a large number of genes co-operating in diverse networks that serve multiple adaptive process. To understand how gene regulatory networks (GRNs) modulating abiotic stress responses, we compare the GRNs underlying drought and cold stresses using samples collected at 4 or 6 h intervals within 48 h in Chinese bayberry (). We detected 7,583 and 8,840 differentially expressed genes (DEGs) under drought and cold stress respectively, which might be responsive to environmental stresses. Drought- and cold-responsive GRNs, which have been built according to the timing of transcription under both abiotic stresses, have a conserved trans-regulator and a common regulatory network. In both GRNs, basic helix-loop-helix family transcription factor (bHLH) serve as central nodes. transcripts exhibited continuous increase in the two abiotic stresses and acts upstream regulator of () gene. To examine the potential biological functions of , we generated a transgenic plant that constitutively overexpresses the gene. Compared to wild-type (WT) plants, overexpressing transgenic plants maintained higher APX activity and biomass accumulation under drought and cold stress. Consistently, RNAi plants had elevated susceptibility to both stresses. Taken together, these results suggested that mitigates abiotic stresses through the modulation of ROS scavenging.

Citing Articles

The StbHLH47 transcription factor negatively regulates drought tolerance in potato (Solanum tuberosum L.).

Wang P, Wu X, Li N, Nie H, Ma Y, Wu J BMC Plant Biol. 2025; 25(1):14.

PMID: 39754033 PMC: 11699788. DOI: 10.1186/s12870-024-06010-7.

Functions and Regulatory Mechanisms of bHLH Transcription Factors during the Responses to Biotic and Abiotic Stresses in Woody Plants.

Yan T, Shu X, Ning C, Li Y, Wang Z, Wang T Plants (Basel). 2024; 13(16).

PMID: 39204751 PMC: 11360703. DOI: 10.3390/plants13162315.

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