New Insights into Transcription Factors: ZmCCT Plays Crucial Role in Maize Stress Tolerance

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Transcription factors are vital regulators of gene expression, and understanding their role in plant stress response is crucial for enhancing crop yields and improving agricultural productivity. Recent research conducted by scientists at the Beijing University of Agriculture has shed light on the function of the nuclear transcription factor ZmCCT in maize stress tolerance. According to the study, ZmCCT plays a significant role in high salt and low nitrogen stress tolerance, and its expression has been found to be associated with increased resistance to stem rot.

Key Takeaways:

  • ZmCCT is a nuclear transcription factor that positively regulates salt and low nitrogen stress response in maize.
  • The study found that ZmCCT is involved in high salt and low nitrogen stress tolerance, and its expression is associated with increased resistance to stem rot.
  • ZmCCT was cloned years ago, but its key molecular mechanisms in response to biotic and abiotic stresses remained unclear until this study.
  • The research demonstrated that ZmCCT can activate salt-inducible genes and low nitrogen involved genes in response to high salt and low nitrogen stress.
  • The Y331-DTE and 83B28H5/H5 inbred lines demonstrated superior phenotypic performance compared to the Y331 and 83B28H1/H1 lines under high salt and low nitrogen stress conditions.
  • Transgenic Arabidopsis thaliana overexpressing ZmCCT showed enhanced tolerance to salt and low nitrogen stress compared with wild-type plants.

Statistics:

  • The study concluded that ZmCCT functions as an important role in high salt and low nitrogen stress tolerance.
  • The research highlighted that ZmCCT has multiple abiotic stress roles, indicating its potential as a candidate to enhance plant salt and low nitrogen stresses in maize molecular design breeding.
  • The study analyzed 6 types of salt-inducible genes (ZmNADP, ZmPP2C, ZmbHLH55, ZmPIP1-1, ZmPIP2-4) and 5 types of low nitrogen involved genes (ZmWRKY47, ZmMYB44, ZmMYB36, ZmPIN10, ZmbHLH83).

Sources:

  • The nuclear transcription factor ZmCCT positively regulates salt and low nitrogen stress response in Maize (Elsevier, 2025)
  • http://dx.doi.org/10.1016/j.stress.2025.100893
  • Beijing Key Laboratory of New Technology in Agricultural Application, National Demonstration Center for Experimental Plant Production Education, Beijing University of Agriculture
  • Research team members: Yanbing Zhang, Zhihuan Zhou, Senlin Xiao, Yipu Li, Suxiao Hao, Fan Que, Zhongjia Liu, Liyu Shi, Yingying Shi, Zhaoheng Zhang, Yang Xu, Tonghui Li, Yaxing Shi, Chun Yin, Wei Song, Ronghuan Wang, Weixiang Wang