scholarly journals Heterologous Expression of the Transcription Factor EsNAC1 in Arabidopsis Enhances Abiotic Stress Resistance and Retards Growth by Regulating the Expression of Different Target Genes

2018 ◽  
Vol 9 ◽  
Author(s):  
Can Liu ◽  
Qinghua Sun ◽  
Lei Zhao ◽  
Zhaoxia Li ◽  
Zhenghua Peng ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Abiotic Stress ◽  
Heterologous Expression ◽  
Stress Resistance ◽  
Target Genes

scholarly journals The BpMYB4 Transcription Factor From Betula platyphylla Contributes Toward Abiotic Stress Resistance and Secondary Cell Wall Biosynthesis

2021 ◽  
Vol 11 ◽  
Author(s):  
Ying Yu ◽  
Huizi Liu ◽  
Nan Zhang ◽  
Caiqiu Gao ◽  
Liwang Qi ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Abiotic Stress ◽  
Transgenic Plants ◽  
Stress Resistance ◽  
Secondary Cell Wall ◽  
Lignin Content ◽  
Lignin Biosynthesis ◽  
Betula Platyphylla ◽  
Wild Type

The MYB (v-myb avian myeloblastosis viral oncogene homolog) family is one of the largest transcription factor families in plants, and is widely involved in the regulation of plant metabolism. In this study, we show that a MYB4 transcription factor, BpMYB4, identified from birch (Betula platyphylla Suk.) and homologous to EgMYB1 from Eucalyptus robusta Smith and ZmMYB31 from Zea mays L. is involved in secondary cell wall synthesis. The expression level of BpMYB4 was higher in flowers relative to other tissues, and was induced by artificial bending and gravitational stimuli in developing xylem tissues. The expression of this gene was not enriched in the developing xylem during the active season, and showed higher transcript levels in xylem tissues around sprouting and near the dormant period. BpMYB4 also was induced express by abiotic stress. Functional analysis indicated that expression of BpMYB4 in transgenic Arabidopsis (Arabidopsis thaliana) plants could promote the growth of stems, and result in increased number of inflorescence stems and shoots. Anatomical observation of stem sections showed lower lignin deposition, and a chemical contents test also demonstrated increased cellulose and decreased lignin content in the transgenic plants. In addition, treatment with 100 mM NaCl and 200 mM mannitol resulted in the germination rate of the over-expressed lines being higher than that of the wild-type seeds. The proline content in transgenic plants was higher than that in WT, but MDA content was lower than that in WT. Further investigation in birch using transient transformation techniques indicated that overexpression of BpMYB4 could scavenge hydrogen peroxide and O2.– and reduce cell damage, compared with the wild-type plants. Therefore, we believe that BpMYB4 promotes stem development and cellulose biosynthesis as an inhibitor of lignin biosynthesis, and has a function in abiotic stress resistance.

scholarly journals DAF-16/FOXO requires Protein Phosphatase 4 to initiate transcription of stress resistance and longevity promoting genes

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Ilke Sen ◽  
Xin Zhou ◽  
Alexey Chernobrovkin ◽  
Nataly Puerta-Cavanzo ◽  
Takaharu Kanno ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Rna Polymerase Ii ◽  
Stress Resistance ◽  
Protein Phosphatase ◽  
Target Genes ◽  
Transcriptional Regulator ◽  
Specific Protein ◽  
Transcriptional Initiation ◽  
C Elegans ◽  
Rate Limiting

AbstractIn C. elegans, the conserved transcription factor DAF-16/FOXO is a powerful aging regulator, relaying dire conditions into expression of stress resistance and longevity promoting genes. For some of these functions, including low insulin/IGF signaling (IIS), DAF-16 depends on the protein SMK-1/SMEK, but how SMK-1 exerts this role has remained unknown. We show that SMK-1 functions as part of a specific Protein Phosphatase 4 complex (PP4SMK-1). Loss of PP4SMK-1 hinders transcriptional initiation at several DAF-16-activated genes, predominantly by impairing RNA polymerase II recruitment to their promoters. Search for the relevant substrate of PP4SMK-1 by phosphoproteomics identified the conserved transcriptional regulator SPT-5/SUPT5H, whose knockdown phenocopies the loss of PP4SMK-1. Phosphoregulation of SPT-5 is known to control transcriptional events such as elongation and termination. Here we also show that transcription initiating events are influenced by the phosphorylation status of SPT-5, particularly at DAF-16 target genes where transcriptional initiation appears rate limiting, rendering PP4SMK-1 crucial for many of DAF-16’s physiological roles.

A Stress-Responsive CaM-Binding Transcription Factor, bZIP4, Confers Abiotic Stress Resistance in Arabidopsis

2021 ◽  
Author(s):  
Minsoo Noh ◽  
A. K. M. Mahmudul Huque ◽  
Kwang Wook Jung ◽  
Yun Young Kim ◽  
Jeong Sheop Shin
Keyword(s):  
Transcription Factor ◽  
Abiotic Stress ◽  
Stress Resistance

scholarly journals Transcription factors involved in abiotic stress responses in maize (Zea mays L.) and their roles in enhanced productivity in the post genomics era

2019 ◽  
Author(s):  
Roy Njoroge Kimotho ◽  
Elamin Hafiz Baillo ◽  
Zhengbin Zhang
Keyword(s):  
Zea Mays ◽  
Transcription Factor ◽  
Transcription Factors ◽  
Abiotic Stress ◽  
Stress Responses ◽  
Abiotic Stresses ◽  
Target Genes ◽  
Animal Feed ◽  
Specific Transcription Factor ◽  
Transcription Factor Genes

Background: Maize (Zea mays L.) is a principal cereal crop cultivated worldwide for human food, animal feed, and more recently as a source of biofuel. However, as a direct consequence of water insufficiency and climate change, frequent occurrences of both biotic and abiotic stresses have been reported in different regions around the world, and recently, this has become a major threat in increasing global maize yields. Plants respond to abiotic stresses by utilizing the activity of transcription factors, which are families of genes coding for specific transcription factor proteins whose target genes form a regulon which is involved in the repression/ activation of genes associated with abiotic stress responses. Therefore, it is of uttermost importance to have a systematic study on each family of the transcription factors, the downstream target genes they regulate, and the specific transcription factor genes which are involved in multiple abiotic stress responses in maize and other main crops. Method: In this review, the main transcription factor families, the specific transcription factor genes and their regulons which are involved in abiotic stress regulation will be momentarily discussed. Great emphasis will be given on maize abiotic stress improvement throughout this review, although other examples from other plants like rice, Arabidopsis, wheat, and barley will be used. Results: We have described in detail the main transcription factor families in maize which take part in abiotic stress responses together with their regulons. Furthermore, we have also briefly described the utilization of high-efficiency technologies in the study and characterization of TFs involved in the abiotic stress regulatory networks in plants with an emphasis on increasing maize production. Examples of these technologies include next-generation sequencing, microarray analysis, machine learning and RNA-Seq technology. Conclusion: In conclusion, it is hoped that all the information provided in this review may in time contribute to the use of TF genes in the research, breeding, and development of new abiotic stress tolerant maize cultivars.

scholarly journals Transcription factors involved in abiotic stress responses in maize (Zea mays L.) and their roles in enhanced productivity in the post genomics era

2019 ◽  
Author(s):  
Roy Njoroge Kimotho ◽  
Elamin Hafiz Baillo ◽  
Zhengbin Zhang
Keyword(s):  
Zea Mays ◽  
Transcription Factor ◽  
Transcription Factors ◽  
Abiotic Stress ◽  
Stress Responses ◽  
Abiotic Stresses ◽  
Target Genes ◽  
Animal Feed ◽  
Specific Transcription Factor ◽  
Transcription Factor Genes

Background: Maize (Zea mays L.) is a principal cereal crop cultivated worldwide for human food, animal feed, and more recently as a source of biofuel. However, as a direct consequence of water insufficiency and climate change, frequent occurrences of both biotic and abiotic stresses have been reported in different regions around the world, and recently, this has become a major threat in increasing global maize yields. Plants respond to abiotic stresses by utilizing the activity of transcription factors, which are families of genes coding for specific transcription factor proteins whose target genes form a regulon which is involved in the repression/ activation of genes associated with abiotic stress responses. Therefore, it is of uttermost importance to have a systematic study on each family of the transcription factors, the downstream target genes they regulate, and the specific transcription factor genes which are involved in multiple abiotic stress responses in maize and other main crops. Method: In this review, the main transcription factor families, the specific transcription factor genes and their regulons which are involved in abiotic stress regulation will be momentarily discussed. Great emphasis will be given on maize abiotic stress improvement throughout this review, although other examples from other plants like rice, Arabidopsis, wheat, and barley will be used. Results: We have described in detail the main transcription factor families in maize which take part in abiotic stress responses together with their regulons. Furthermore, we have also briefly described the utilization of high-efficiency technologies in the study and characterization of TFs involved in the abiotic stress regulatory networks in plants with an emphasis on increasing maize production. Examples of these technologies include next-generation sequencing, microarray analysis, machine learning and RNA-Seq technology. Conclusion: In conclusion, it is hoped that all the information provided in this review may in time contribute to the use of TF genes in the research, breeding, and development of new abiotic stress tolerant maize cultivars.

The Arabidopsis basic leucine zipper transcription factor AtbZIP24 regulates complex transcriptional networks involved in abiotic stress resistance

Gene ◽  
2009 ◽  
Vol 436 (1-2) ◽  
pp. 45-55 ◽  
Author(s):  
Oksoon Yang ◽  
Olga V. Popova ◽  
Ulrike Süthoff ◽  
Ines Lüking ◽  
Karl-Josef Dietz ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Abiotic Stress ◽  
Stress Resistance ◽  
Leucine Zipper ◽  
Transcriptional Networks ◽  
Basic Leucine Zipper

scholarly journals TsNAC1 Is a Key Transcription Factor in Abiotic Stress Resistance and Growth

2017 ◽  
Vol 176 (1) ◽  
pp. 742-756 ◽  
Author(s):  
Can Liu ◽  
Baomei Wang ◽  
Zhaoxia Li ◽  
Zhenghua Peng ◽  
Juren Zhang
Keyword(s):  
Transcription Factor ◽  
Abiotic Stress ◽  
Stress Resistance
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