scholarly journals Genome-Wide Identification and Functional Characterization of GATA Transcription Factor Gene Family in Alternaria alternata

2021 ◽  
Vol 7 (12) ◽  
pp. 1013
Author(s):  
Yanan Chen ◽  
Yingzi Cao ◽  
Yunpeng Gai ◽  
Haijie Ma ◽  
Zengrong Zhu ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Environmental Stress ◽  
Alternaria Alternata ◽  
Gene Knockout ◽  
Critical Role ◽  
Functional Characterization ◽  
Oxidoreductase Activity ◽  
Fungal Virulence ◽  
Gata Transcription Factors ◽  
Citrus Leaves

In the present study, we identified six GATA transcription factors (AaAreA, AaAreB, AaLreA, AaLreB, AaNsdD, and AaSreA) and characterized their functions in response to environmental stress and virulence in the tangerine pathotype of Alternaria alternata. The targeted gene knockout of each of the GATA-coding genes decreased the growth to varying degrees. The mutation of AaAreA, AaAreB, AaLreB, or AaNsdD decreased the conidiation. All the GATA transcription factors were found to be required for tolerance to cumyl hydroperoxide and tert-butyl-hydroperoxide (oxidants) and Congo red (a cell-wall-destructing agent). Pathogenicity assays assessed on detached citrus leaves revealed that mutations of AaAreA, AaLreA, AaLreB, or AaNsdD significantly decreased the fungal virulence. A comparative transcriptome analysis between the ∆AreA mutant and the wild-type strain revealed that the inactivation of AaAreA led to alterations in the expression of genes involved in a number of biological processes, including oxidoreductase activity, amino acid metabolism, and secondary metabolite biogenesis. Taken together, our findings revealed that GATA-coding genes play diverse roles in response to environmental stress and are important regulators involved in fungal development, conidiation, ROS detoxification, as well as pathogenesis. This study, for the first time, systemically underlines the critical role of GATA transcription factors in response to environmental stress and virulence in A. alternata.

scholarly journals Identification of GATA Transcription Factors in Brachypodium distachyon and Functional Characterization of BdGATA13 in Drought Tolerance and Response to Gibberellins

2021 ◽  
Vol 12 ◽  
Author(s):  
Jie Guo ◽  
Xionghui Bai ◽  
Keli Dai ◽  
Xiangyang Yuan ◽  
Pingyi Guo ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Drought Tolerance ◽  
Expression Profiles ◽  
Brachypodium Distachyon ◽  
Functional Characterization ◽  
Primary Root ◽  
Leaf Tissue ◽  
Type Iv ◽  
Gata Transcription Factors ◽  
Gene Structures

GATA transcription factors (TFs) are type IV zinc-finger proteins that have roles in plant development and growth. The 27 GATA TFs identified in the Brachypodium distachyon genome in this study were unevenly distributed across all five chromosomes and classified into four subgroups. Phylogenesis-related GATAs shared similar gene structures and conserved motifs. Expression profiles showed that all BdGATA genes were expressed in leaves and most were induced by PEG treatment. BdGATA13 was predominantly expressed in leaf tissue and phylogenetically close to OsSNFL1, AtGNC, and AtGNL. Its protein was detected in the nucleus by subcellular localization analysis. Overexpression of BdGATA13 in transgenic Arabidopsis resulted in darker green leaves, later flowering, and more importantly, enhanced drought tolerance compared to the wild type. BdGATA13 also promoted primary root development under GA treatment. These results lay a foundation for better understanding the function of GATA genes in B. distachyon and other plants.

scholarly journals Genetic map construction and functional characterization of genes within the segregation distortion regions (SDRs) in the F2:3 populations derived from wild cotton species of the D genome

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Joy Nyangasi KIRUNGU ◽  
Richard Odongo MAGWANGA ◽  
Margaret Linyerera SHIRAKU ◽  
Pu LU ◽  
Teame Gereziher MEHARI ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Segregation Distortion ◽  
Critical Role ◽  
Functional Characterization ◽  
Dominant Gene ◽  
Regulatory Elements ◽  
Consensus Map ◽  
D Genome ◽  
Cotton Species ◽  
Wild Cotton

Abstract Background Segregation distortion (SD) is a common phenomenon among stable or segregating populations, and the principle behind it still puzzles many researchers. The F2:3 progenies developed from the wild cotton species of the D genomes were used to investigate the possible plant transcription factors within the segregation distortion regions (SDRs). A consensus map was developed between two maps from the four D genomes, map A derived from F2:3 progenies of Gossypium klotzschianum and G. davidsonii while Map B from G. thurberi and G. trilobum F2:3 generations. In each map, 188 individual plants were used. Results The consensus linkage map had 1 492 markers across the 13 linkage groups with a map size of 1 467.445 cM and an average marker distance of 1.037 0 cM. Chromosome D502 had the highest percentage of SD with 58.6%, followed by Chromosome D507 with 47.9%. Six thousand and thirty-eight genes were mined within the SDRs on chromosome D502 and D507 of the consensus map. Within chromosome D502 and D507, 2 308 and 3 730 genes were mined, respectively, and were found to belong to 1 117 gourp out of which 622 groups were common across the two chromosomes. Moreover, genes within the top 9 groups related to plant resistance genes (R genes), whereas 188 genes encoding protein kinase domain (PF00069) comprised the largest group. Further analysis of the dominant gene group revealed that 287 miRNAs were found to target various genes, such as the gra-miR398, gra-miR5207, miR164a, miR164b, miR164c among others, which have been found to target top-ranked stress-responsive transcription factors such as NAC genes. Moreover, some of the stress- responsive cis-regulatory elements were also detected. Furthermore, RNA profiling of the genes from the dominant family showed that higher numbers of genes were highly upregulated under salt and osmotic stress conditions, and also they were highly expressed at different stages of fiber development. Conclusion The results indicated the critical role of the SDRs in the evolution of the key regulatory genes in plants.

scholarly journals Genetic Map Construction and Functional Characterization of Genes within the Segregation Distortion Regions (SDRs) in the F2:3 Populations Derived from Wild Cotton Species of the D Genome

2020 ◽  
Author(s):  
Joy Nyangasi KIRUNGU ◽  
Richard Odongo MAGWANGA ◽  
Margaret Linyerera SHIRAKU ◽  
LU Pu ◽  
Teame Gereziher MEHARI ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Segregation Distortion ◽  
Critical Role ◽  
Functional Characterization ◽  
Regulatory Elements ◽  
Consensus Map ◽  
Dominant Group ◽  
D Genome ◽  
Cotton Species ◽  
Wild Cotton

Abstract Background: Segregation distortion (SD) is a phenomenon common among stable or segregating populations, and the principle behind it still puzzles many researchers. The F2:3 progenies developed from the wild cotton species of the D genomes were used to investigate the possible plant transcription factors within the segregation distortion regions (SDRs). A consensus map was developed between two maps from the four D genome, map A derived from F2:3 progenies of Gossypium klotzschianum and G. davidsonii while Map B from G. thurberi and G. trilobum F2:3 generations. In each map, 188 individual plants were used. Results: The consensus linkage map had 1 492 markers across the 13 linkage groups; with a map size of 1467.445 cM and an average marker distance of 1.037 0 cM. Chromosome D502 had the highest percentage of SD with 58.621%, followed by Chromosome D507 with 47.887%. Six thousand and thirty- eight genes were mined within the SDRs on chromosome D502 and D507 of the consensus map. Within chromosome D502 and D507, 2,308 and 3 730 genes were mined, respectively, and were found to belong to 1 117 domains out of which 622 domains were common across the two chromosomes. Moreover, the first 9 domains were members of the plant resistance genes (R genes), while Pkinase; Protein kinase domain (PF00069) was the dominant group with 188 genes. Further analysis on the dominant domains revealed that 287 miRNAs were found to target various genes, such as the gr-miR398, gra-miR5207, miR164a, miR164b, miR164c among others, which have been found to target top-ranked stress-responsive transcription factors such as NAC genes. Moreover, some of the stress- responsive cis-regulatory elements were also detected. Furthermore, RNA profiling of the genes from the dominant family showed that higher numbers of genes were highly upregulated under salt and osmotic stress conditions, and also they were highly expressed at different stages of fiber development. Conclusion: The results indicated the critical role of the SDRs in the evolution of significant genes in plants.

scholarly journals Characterization of the GATA gene family in Vitis vinifera: genome-wide analysis, expression profiles, and involvement in light and phytohormone response

Genome ◽  
2018 ◽  
Vol 61 (10) ◽  
pp. 713-723 ◽  
Author(s):  
Zhan Zhang ◽  
Chong Ren ◽  
Luming Zou ◽  
Yi Wang ◽  
Shaohua Li ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Vitis Vinifera ◽  
Expression Profiles ◽  
Expression Patterns ◽  
Functional Characterization ◽  
Model Systems ◽  
Gata Transcription Factors ◽  
Gata Gene ◽  
Gata Family

The plant GATA family is one of the most important transcription factors involved in light-responsive development, nitrogen metabolism, phytohormone signaling, and source/sink balance. However, the function of the GATA gene is less known in grape (Vitis vinifera L.). In this study, we comprehensively analyzed the GATA family in grape, particularly the phylogenetic evolution, duplication patterns, conserved motifs, gene structures, cis-elements, tissue expression patterns, and predicted function of VvGATA genes in response to abiotic stress. The potential roles of VvGATA genes in berry development were also investigated. The GATA transcription factors displayed expression diversity among different grape organs and tissues, and some of them showed preferential expression in a specific tissue. Heterotrophic cultured cells were used as model systems for the functional characterization of the VvGATA gene and study of its response to light and phytohormone. Results indicated that some VvGATA genes displayed differential responses to light and phytohormones, suggesting their role in light and hormone signaling pathways. A thorough analysis of GATA transcription factors in grape (V. vinifera L.) presented the characterization and functional prediction of VvGATA genes. The data presented here lay the foundation for further functional studies of grape GATA transcription factors.

scholarly journals Regulatory Network Analysis in Estradiol-Treated Human Endothelial Cells

2021 ◽  
Vol 22 (15) ◽  
pp. 8193
Author(s):  
Daniel Pérez-Cremades ◽  
Ana B. Paes ◽  
Xavier Vidal-Gómez ◽  
Ana Mompeón ◽  
Carlos Hermenegildo ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Transcription Factor ◽  
Transcription Factors ◽  
Regulatory Network ◽  
Mirna Target ◽  
Target Genes ◽  
Functional Characterization ◽  
Human Endothelial Cells ◽  
Mrna Targets ◽  
Canonical Pathways

Background/Aims: Estrogen has been reported to have beneficial effects on vascular biology through direct actions on endothelium. Together with transcription factors, miRNAs are the major drivers of gene expression and signaling networks. The objective of this study was to identify a comprehensive regulatory network (miRNA-transcription factor-downstream genes) that controls the transcriptomic changes observed in endothelial cells exposed to estradiol. Methods: miRNA/mRNA interactions were assembled using our previous microarray data of human umbilical vein endothelial cells (HUVEC) treated with 17β-estradiol (E2) (1 nmol/L, 24 h). miRNA–mRNA pairings and their associated canonical pathways were determined using Ingenuity Pathway Analysis software. Transcription factors were identified among the miRNA-regulated genes. Transcription factor downstream target genes were predicted by consensus transcription factor binding sites in the promoter region of E2-regulated genes by using JASPAR and TRANSFAC tools in Enrichr software. Results: miRNA–target pairings were filtered by using differentially expressed miRNAs and mRNAs characterized by a regulatory relationship according to miRNA target prediction databases. The analysis identified 588 miRNA–target interactions between 102 miRNAs and 588 targets. Specifically, 63 upregulated miRNAs interacted with 295 downregulated targets, while 39 downregulated miRNAs were paired with 293 upregulated mRNA targets. Functional characterization of miRNA/mRNA association analysis highlighted hypoxia signaling, integrin, ephrin receptor signaling and regulation of actin-based motility by Rho among the canonical pathways regulated by E2 in HUVEC. Transcription factors and downstream genes analysis revealed eight networks, including those mediated by JUN and REPIN1, which are associated with cadherin binding and cell adhesion molecule binding pathways. Conclusion: This study identifies regulatory networks obtained by integrative microarray analysis and provides additional insights into the way estradiol could regulate endothelial function in human endothelial cells.

scholarly journals Deciphering the Mounting Complexity of the p53 Regulatory Network in Correlation to Long Non-Coding RNAs (lncRNAs) in Ovarian Cancer

Cells ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 527 ◽  
Author(s):  
Sonali Pal ◽  
Manoj Garg ◽  
Amit Kumar Pandey
Keyword(s):  
Ovarian Cancer ◽  
Molecular Mechanisms ◽  
Human Cancer ◽  
Critical Role ◽  
Functional Characterization ◽  
Great Promise ◽  
Altered Expression ◽  
Disease Biology ◽  
Non Coding Rnas ◽  
Post Transcriptional Regulation

Amongst the various gynecological malignancies affecting female health globally, ovarian cancer is one of the predominant and lethal among all. The identification and functional characterization of long non-coding RNAs (lncRNAs) are made possible with the advent of RNA-seq and the advancement of computational logarithm in understanding human disease biology. LncRNAs can interact with deoxyribonucleic acid (DNA), ribonucleic acid (RNA), proteins and their combinations. Moreover, lncRNAs regulate orchestra of diverse functions including chromatin organization and transcriptional and post-transcriptional regulation. LncRNAs have conferred their critical role in key biological processes in human cancer including tumor initiation, proliferation, cell cycle, apoptosis, necroptosis, autophagy, and metastasis. The interwoven function of tumor-suppressor protein p53-linked lncRNAs in the ovarian cancer paradigm is of paramount importance. Several lncRNAs operate as p53 regulators or effectors and modulates a diverse array of functions either by participating in various signaling cascades or via interaction with different proteins. This review highlights the recent progress made in the identification of p53 associated lncRNAs while elucidating their molecular mechanisms behind the altered expression in ovarian cancer tumorigenesis. Moreover, the development of novel clinical and therapeutic strategies for targeting lncRNAs in human cancers harbors great promise.

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