scholarly journals The Arabidopsis NAC Transcription Factor ANAC096 Cooperates with bZIP-Type Transcription Factors in Dehydration and Osmotic Stress Responses

2013 ◽  
Vol 25 (11) ◽  
pp. 4708-4724 ◽  
Author(s):  
Z.-Y. Xu ◽  
S. Y. Kim ◽  
D. Y. Hyeon ◽  
D. H. Kim ◽  
T. Dong ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Transcription Factors ◽  
Osmotic Stress ◽  
Stress Responses ◽  
Nac Transcription Factor

scholarly journals A Heat Stress Responsive NAC Transcription Factor Heterodimer Plays Key Roles in Rice Grain Filling

2020 ◽  
Author(s):  
Ye Ren ◽  
Zhouquan Huang ◽  
Hao Jiang ◽  
Zhuo Wang ◽  
Fengsheng Wu ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Transcription Factors ◽  
Heat Stress ◽  
Stress Response ◽  
Stress Responses ◽  
Transcriptional Regulatory Network ◽  
Grain Filling ◽  
Nac Transcription Factor ◽  
Rice Grain ◽  
Heat Stress Response

AbstractHigh temperature often leads to the failure of grain filling in rice (Oryza sativa) to cause yield loss, while the mechanism is not well elucidated yet. Here, we report that two seed-specific NAM/ATAF/CUC domain transcription factors, ONAC127 and ONAC129, are responsive to heat stress and involved in the grain filling process of rice. ONAC127 and ONAC129 are dominantly expressed in the pericarp and can form a heterodimer during rice grain filling. CRISPR/Cas9 induced mutants and overexpression lines were then generated to investigate the functions of these two transcription factors. Interestingly, both knock-out and overexpression plants showed incomplete grain filling and shrunken grains, which became more severe under heat stress. Transcriptome analysis revealed that ONAC127 and ONAC129 mainly regulate stimulus response and nutrient transport. ChIP-seq analysis identified that the direct targets of ONAC127 and ONAC129 in developing rice seeds include monosaccharide transporter OsMST6, sugar transporter OsSWEET4, calmodulin-like protein OsMSR2 and AP2/ERF factor OsEATB. These results suggest that ONAC127 and ONAC129 may regulate grain filling through affecting sugar transportation and abiotic stress responses. Overall, this study demonstrates a transcriptional regulatory network involving ONAC127 and ONAC129 and coordinating multiple pathways to modulate seed development and heat stress response at rice reproductive stage.HighlightA NAC transcription factor heterodimer plays vital roles in heat stress response and sugar transportation at rice grain filling stage.

scholarly journals Evolutionarily conserved transcription factors drive the oxidative stress response in Drosophila

2020 ◽  
Vol 223 (14) ◽  
pp. jeb221622
Author(s):  
Sarah M. Ryan ◽  
Kaitie Wildman ◽  
Briseida Oceguera-Perez ◽  
Scott Barbee ◽  
Nathan T. Mortimer ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Transcription Factor ◽  
Transcription Factors ◽  
Stress Responses ◽  
Binding Sites ◽  
Regulatory Elements ◽  
Genomic Locus ◽  
Biologically Relevant ◽  
Protein Levels ◽  
Putative Transcription Factor

ABSTRACTAs organisms are constantly exposed to the damaging effects of oxidative stress through both environmental exposure and internal metabolic processes, they have evolved a variety of mechanisms to cope with this stress. One such mechanism is the highly conserved p38 MAPK (p38K) pathway, which is known to be post-translationally activated in response to oxidative stress, resulting in the activation of downstream antioxidant targets. However, little is known about the role of p38K transcriptional regulation in response to oxidative stress. Therefore, we analyzed the p38K gene family across the genus Drosophila to identify conserved regulatory elements. We found that oxidative stress exposure results in increased p38K protein levels in multiple Drosophila species and is associated with increased oxidative stress resistance. We also found that the p38Kb genomic locus includes conserved AP-1 and lola-PT transcription factor consensus binding sites. Accordingly, over-expression of these transcription factors in D. melanogaster is sufficient to induce transcription of p38Kb and enhances resistance to oxidative stress. We further found that the presence of a putative lola-PT binding site in the p38Kb locus of a given species is predictive of the species' survival in response to oxidative stress. Through our comparative genomics approach, we have identified biologically relevant putative transcription factor binding sites that regulate the expression of p38Kb and are associated with resistance to oxidative stress. These findings reveal a novel mode of regulation for p38K genes and suggest that transcription may play as important a role in p38K-mediated stress responses as post-translational modifications.

Analysis of the NAC transcription factor gene family in citrus reveals a novel member involved in multiple abiotic stress responses

2011 ◽  
Vol 7 (6) ◽  
pp. 1123-1134 ◽  
Author(s):  
Tahise M. de Oliveira ◽  
Luciana C. Cidade ◽  
Abelmon S. Gesteira ◽  
Maurício A. Coelho Filho ◽  
Walter S. Soares Filho ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Abiotic Stress ◽  
Gene Family ◽  
Stress Responses ◽  
Nac Transcription Factor ◽  
Transcription Factor Gene ◽  
Factor Gene ◽  
Transcription Factor Gene Family

AtfA bZIP-type transcription factor regulates oxidative and osmotic stress responses in Aspergillus nidulans

2010 ◽  
Vol 283 (3) ◽  
pp. 289-303 ◽  
Author(s):  
Anita Balázs ◽  
Imre Pócsi ◽  
Zsuzsanna Hamari ◽  
Éva Leiter ◽  
Tamás Emri ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Osmotic Stress ◽  
Aspergillus Nidulans ◽  
Stress Responses

Transcription factor WRKY46 regulates osmotic stress responses and stomatal movement independently in Arabidopsis

2014 ◽  
Vol 79 (1) ◽  
pp. 13-27 ◽  
Author(s):  
Zhong Jie Ding ◽  
Jing Ying Yan ◽  
Xiao Yan Xu ◽  
Di Qiu Yu ◽  
Gui Xin Li ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Osmotic Stress ◽  
Stress Responses ◽  
Stomatal Movement

scholarly journals Comprehensive genomic characterization of NAC transcription factor family and their response to salt and drought stress in peanut

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Cuiling Yuan ◽  
Chunjuan Li ◽  
Xiaodong Lu ◽  
Xiaobo Zhao ◽  
Caixia Yan ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Drought Stress ◽  
Stress Responses ◽  
Expression Patterns ◽  
Functional Characterization ◽  
Nac Transcription Factor ◽  
Rna Seq ◽  
A Genome ◽  
Salt And Drought Stress

Abstract Background Peanut is one of the most important oil crop species worldwide. NAC transcription factor (TF) genes play important roles in the salt and drought stress responses of plants by activating or repressing target gene expression. However, little is known about NAC genes in peanut. Results We performed a genome-wide characterization of NAC genes from the diploid wild peanut species Arachis duranensis and Arachis ipaensis, which included analyses of chromosomal locations, gene structures, conserved motifs, expression patterns, and cis-acting elements within their promoter regions. In total, 81 and 79 NAC genes were identified from A. duranensis and A. ipaensis genomes. Phylogenetic analysis of peanut NACs along with their Arabidopsis and rice counterparts categorized these proteins into 18 distinct subgroups. Fifty-one orthologous gene pairs were identified, and 46 orthologues were found to be highly syntenic on the chromosomes of both A. duranensis and A. ipaensis. Comparative RNA sequencing (RNA-seq)-based analysis revealed that the expression of 43 NAC genes was up- or downregulated under salt stress and under drought stress. Among these genes, the expression of 17 genes in cultivated peanut (Arachis hypogaea) was up- or downregulated under both stresses. Moreover, quantitative reverse transcription PCR (RT-qPCR)-based analysis revealed that the expression of most of the randomly selected NAC genes tended to be consistent with the comparative RNA-seq results. Conclusion Our results facilitated the functional characterization of peanut NAC genes, and the genes involved in salt and drought stress responses identified in this study could be potential genes for peanut improvement.

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.

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