Genome-Wide Analysis of NAC Transcription Factors and Characterization of the Cold Stress Response in Sweet Osmanthus

2020 ◽  
Vol 38 (2) ◽  
pp. 314-330
Author(s):  
Yuanzheng Yue ◽  
Ling Li ◽  
Yuli Li ◽  
Haiyan Li ◽  
Wenjie Ding ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Stress Response ◽  
Cold Stress ◽  
Nac Transcription Factors ◽  
Genome Wide Analysis ◽  
Genome Wide

scholarly journals Genome-Wide Identification and Analysis of the WRKY Gene Family and Cold Stress Response in Acer truncatum

Genes ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1867
Author(s):  
Yan Li ◽  
Xiang Li ◽  
Jiatong Wei ◽  
Kewei Cai ◽  
Hongzhi Zhang ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Stress Response ◽  
Cold Stress ◽  
Gene Family ◽  
Gene Families ◽  
Regulatory Function ◽  
Wrky Gene ◽  
Wrky Transcription Factors ◽  
Biotic Stresses ◽  
Genome Wide

WRKY transcription factors constitute one of the largest gene families in plants and are involved in many biological processes, including growth and development, physiological metabolism, and the stress response. In earlier studies, the WRKY gene family of proteins has been extensively studied and analyzed in many plant species. However, information on WRKY transcription factors in Acer truncatum has not been reported. In this study, we conducted genome-wide identification and analysis of the WRKY gene family in A. truncatum, 54 WRKY genes were unevenly located on all 13 chromosomes of A. truncatum, the highest number was found in chromosomes 5. Phylogenetic relationships, gene structure, and conserved motif identification were constructed, and the results affirmed 54 AtruWRKY genes were divided into nine subgroup groups. Tissue species analysis of AtruWRKY genes revealed which were differently exhibited upregulation in flower, leaf, root, seed and stem, and the upregulation number were 23, 14, 34, 18, and 8, respectively. In addition, the WRKY genes expression in leaf under cold stress showed that more genes were significantly expressed under 0, 6 and 12 h cold stress. The results of this study provide a new insight the regulatory function of WRKY genes under abiotic and biotic stresses.

scholarly journals Genome-wide identification and characterization of barley bHLH transcription factors and their expression in response to low nitrogen stress

2020 ◽  
Author(s):  
Xiaoyan Quan ◽  
Xiaoli Liang ◽  
Chunjuan Xie ◽  
Ning Yin ◽  
Ning Zhang ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Differentially Expressed ◽  
Genome Wide Analysis ◽  
Genome Wide ◽  
Bhlh Genes ◽  
Bhlh Transcription Factors ◽  
Bhlh Proteins ◽  
Low Nitrogen ◽  
Barley Genotypes

Abstract Background: Improvement of low nitrogen (LN) tolerance or nitrogen use efficiency (NUE) in crops is imperative for environment-friendly agriculture development. The basic helix–loop–helix (bHLH) transcription factors are involved in multiple abiotic stress, suitable as the candidate genes for improving LN tolerance. Little research was done on characterization of bHLH gene family and their response to LN stress in barley.Results: In this study, 168 bHLH genes were identified in barley through genome-wide analysis. HvbHLH proteins were classified into 26 subfamilies based on phylogenetic analysis with bHLH proteins from Arabidopsis thaliana and rice. The analysis of conserved motifs and gene structures supported the evolutionary relationships among these HvbHLH proteins. Further, analysis of stress-related cis-elements in the promoter regions showed that bHLH proteins in barley are probably involved in multiple stress responses. Finally, at least 16 bHLH genes were differentially expressed in two barley genotypes differing in LN tolerance under LN stress. Dynamic expression analysis showed that these differentially expressed genes (DEGs) differed between the two barley genotypes in response to LN stress.Conclusion: It is the first genome-wide analysis of bHLH family genes in response to LN stress in barley. The results indicate the distinct difference among HvbHLH genes in response to various abiotic stresses. The HvbHLHs specifically expressed in the LN-tolerant barley genotype XZ149 identified herein may be valuable for future function analysis of HvbHLH genes under LN stress and breeding for barley cultivars with LN tolerance.

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