A Genome‐wide Screen for Transcription Factors that Confer Resistance to Sulforaphane in the Yeast, Candida albicans

Abstract Key message This study showed the systematic identification of long non-coding RNAs (lncRNAs) involving in flag leaf senescence of rice, providing the possible lncRNA-mRNA regulatory relationships and lncRNA-miRNA-mRNA ceRNA networks during leaf senescence. Abstract LncRNAs have been reported to play crucial roles in diverse biological processes. However, no systematic identification of lncRNAs associated with leaf senescence in plants has been studied. In this study, a genome-wide high throughput sequencing analysis was performed using rice flag leaves developing from normal to senescence. A total of 3953 lncRNAs and 38757 mRNAs were identified, of which 343 lncRNAs and 9412 mRNAs were differentially expressed. Through weighted gene co-expression network analysis (WGCNA), 22 continuously down-expressed lncRNAs targeting 812 co-expressed mRNAs and 48 continuously up-expressed lncRNAs targeting 1209 co-expressed mRNAs were considered to be significantly associated with flag leaf senescence. Gene Ontology results suggested that the senescence-associated lncRNAs targeted mRNAs involving in many biological processes, including transcription, hormone response, oxidation–reduction process and substance metabolism. Additionally, 43 senescence-associated lncRNAs were predicted to target 111 co-expressed transcription factors. Interestingly, 8 down-expressed lncRNAs and 29 up-expressed lncRNAs were found to separately target 12 and 20 well-studied senescence-associated genes (SAGs). Furthermore, analysis on the competing endogenous RNA (CeRNA) network revealed that 6 down-expressed lncRNAs possibly regulated 51 co-expressed mRNAs through 15 miRNAs, and 14 up-expressed lncRNAs possibly regulated 117 co-expressed mRNAs through 21 miRNAs. Importantly, by expression validation, a conserved miR164-NAC regulatory pathway was found to be possibly involved in leaf senescence, where lncRNA MSTRG.62092.1 may serve as a ceRNA binding with miR164a and miR164e to regulate three transcription factors. And two key lncRNAs MSTRG.31014.21 and MSTRG.31014.36 also could regulate the abscisic-acid biosynthetic gene BGIOSGA025169 (OsNCED4) and BGIOSGA016313 (NAC family) through osa-miR5809. The possible regulation networks of lncRNAs involving in leaf senescence were discussed, and several candidate lncRNAs were recommended for prior transgenic analysis. These findings will extend the understanding on the regulatory roles of lncRNAs in leaf senescence, and lay a foundation for functional research on candidate lncRNAs.

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A genome-wide survey on basic helix-loop-helix transcription factors in rat and mouse

Mammalian Genome ◽

10.1007/s00335-009-9176-7 ◽

2009 ◽

Vol 20 (4) ◽

pp. 236-246 ◽

Cited By ~ 29

Author(s):

X. Zheng ◽

Y. Wang ◽

Q. Yao ◽

Z. Yang ◽

K. Chen

Keyword(s):

Transcription Factors ◽

Basic Helix Loop Helix ◽

Helix Loop Helix ◽

Genome Wide ◽

A Genome ◽

Genome Wide Survey

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RicetissueTFDB: A Genome‐Wide Identification of Tissue‐Specific Transcription Factors in Rice

The Plant Genome ◽

10.3835/plantgenome2017.09.0081 ◽

2019 ◽

Vol 12 (1) ◽

pp. 170081 ◽

Cited By ~ 2

Author(s):

Weiying Chen ◽

Zhenyong Chen ◽

Fuyan Luo ◽

Mingli Liao ◽

Shuhong Wei ◽

...

Keyword(s):

Transcription Factors ◽

Tissue Specific ◽

Genome Wide ◽

A Genome

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Natural selection driven by DNA binding proteins shapes genome-wide motif statistics

10.1101/041145 ◽

2016 ◽

Author(s):

Long Qian ◽

Edo Kussell

Keyword(s):

Transcription Factors ◽

Dna Binding ◽

Binding Proteins ◽

Dna Binding Proteins ◽

Large Collection ◽

Functional Sites ◽

Genome Wide ◽

A Genome ◽

Global Selection

AbstractEctopic DNA binding by transcription factors and other DNA binding proteins can be detrimental to cellular functions and ultimately to organismal fitness. The frequency of protein-DNA binding at non-functional sites depends on the global composition of a genome with respect to all possible short motifs, or k-mer words. To determine whether weak yet ubiquitous protein-DNA interactions could exert significant evolutionary pressures on genomes, we correlate in vitro measurements of binding strengths on all 8-mer words from a large collection of transcription factors, in several different species, against their relative genomic frequencies. Our analysis reveals a clear signal of purifying selection to reduce the large number of weak binding sites genome-wide. This evolutionary process, which we call global selection, has a detectable hallmark in that similar words experience similar evolutionary pressure, a consequence of the biophysics of protein-DNA binding. By analyzing a large collection of genomes, we show that global selection exists in all domains of life, and operates through tiny selective steps, maintaining genomic binding landscapes over long evolutionary timescales.

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Genome-wide investigation of the AP2/ERF gene family in ginger: evolution and expression profiles during rhizome and inflorescence development

10.21203/rs.3.rs-272236/v1 ◽

2021 ◽

Author(s):

Haitao Xing ◽

Yusong Jiang ◽

Xiaoling Long ◽

Xiaoli Wu ◽

Yun Ren ◽

...

Keyword(s):

Transcription Factors ◽

Expression Profiles ◽

Expression Patterns ◽

Whole Genome Sequence ◽

Chromosomal Distribution ◽

Inflorescence Development ◽

Systematic Analysis ◽

Genome Wide ◽

A Genome ◽

Erf Transcription Factors

Abstract Background:AP2/ERF transcription factors perform indispensable functions in various biological processes, such as plant growth, development, biotic and abiotic stresses responses. The AP2/ERF transcription factor family has been identified in many plants, and several AP2/ERF transcription factors from Arabidopsis (Arabidopsis thaliana) have been functionally characterized. However, little research has been conducted on the AP2/ERF genes of ginger (Zingiber officinale), which is an important edible and medicinal horticultural plant. The recently published whole genome sequence of ginger allowed us to study the tissue and expression profiles of AP2/ERF genes in ginger on a genome-wide basis.Results:In this study, 163 AP2/ERF genes of ginger (ZoAP2/ERF) were identified and renamed according to the chromosomal distribution of the ZoAP2/ERF genes. According to the number conserved domains and gene structure, the AP2/ERF genes were divided into three subfamilies by phylogenetic analysis, namely, AP2 (35 members), ERF (125 members) and RAV (3 members). A total of 10 motifs were detected in ginger AP2/ERF genes, and some of the unique motifs were found to be important for the function of ZoAP2/ERF genes.Conclusion:A comprehensive analysis of AP2/ERF gene expression patterns in different tissues and rhizome development stages by transcriptom sequence and quantitative real-time PCR (qRT-PCR) showed that they played an important role in the growth and development of ginger, and genes that might regulate rhizome and flower development were preliminarily identified. This systematic analysis establishes a foundation for further studies of the functional characteristics of ZoAP2/ERF genes and improvement of ginger.

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Genome-Wide Identification, Characterization and Expression Analysis of TCP Transcription Factors in Petunia

International Journal of Molecular Sciences ◽

10.3390/ijms21186594 ◽

2020 ◽

Vol 21 (18) ◽

pp. 6594

Author(s):

Shuting Zhang ◽

Qin Zhou ◽

Feng Chen ◽

Lan Wu ◽

Baojun Liu ◽

...

Keyword(s):

Transcription Factors ◽

Plant Growth ◽

Gene Family ◽

Stress Responses ◽

Expression Profiles ◽

Expression Patterns ◽

Leaf Morphogenesis ◽

Systematic Analysis ◽

Genome Wide ◽

A Genome

The plant-specific TCP transcription factors are well-characterized in both monocots and dicots, which have been implicated in multiple aspects of plant biological processes such as leaf morphogenesis and senescence, lateral branching, flower development and hormone crosstalk. However, no systematic analysis of the petunia TCP gene family has been described. In this work, a total of 66 petunia TCP genes (32 PaTCP genes in P. axillaris and 34 PiTCP genes in P. inflata) were identified. Subsequently, a systematic analysis of 32 PaTCP genes was performed. The phylogenetic analysis combined with structural analysis clearly distinguished the 32 PaTCP proteins into two classes—class Ι and class Ⅱ. Class Ⅱ was further divided into two subclades, namely, the CIN-TCP subclade and the CYC/TB1 subclade. Plenty of cis-acting elements responsible for plant growth and development, phytohormone and/or stress responses were identified in the promoter of PaTCPs. Distinct spatial expression patterns were determined among PaTCP genes, suggesting that these genes may have diverse regulatory roles in plant growth development. Furthermore, differential temporal expression patterns were observed between the large- and small-flowered petunia lines for most PaTCP genes, suggesting that these genes are likely to be related to petal development and/or petal size in petunia. The spatiotemporal expression profiles and promoter analysis of PaTCPs indicated that these genes play important roles in petunia diverse developmental processes that may work via multiple hormone pathways. Moreover, three PaTCP-YFP fusion proteins were detected in nuclei through subcellular localization analysis. This is the first comprehensive analysis of the petunia TCP gene family on a genome-wide scale, which provides the basis for further functional characterization of this gene family in petunia.

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Induction of theCandida albicansFilamentous Growth Program by Relief of Transcriptional Repression: A Genome-wide Analysis

Molecular Biology of the Cell ◽

10.1091/mbc.e05-01-0073 ◽

2005 ◽

Vol 16 (6) ◽

pp. 2903-2912 ◽

Cited By ~ 207

Author(s):

David Kadosh ◽

Alexander D. Johnson

Keyword(s):

Candida Albicans ◽

Transcriptional Repression ◽

Fungal Pathogen ◽

Morphological Transition ◽

Whole Genome ◽

Transcriptional Repressors ◽

Genome Wide Analysis ◽

Human Fungal Pathogen ◽

Genome Wide ◽

A Genome

Candida albicans, the major human fungal pathogen, undergoes a reversible morphological transition from blastospores (round budding cells) to filaments (elongated cells attached end-to-end). This transition, which is induced upon exposure of C. albicans cells to a number of host conditions, including serum and body temperature (37°C), is required for virulence. Using whole-genome DNA microarray analysis, we describe 61 genes that are significantly induced (≥2-fold) during the blastospore to filament transition that takes place in response to exposure to serum and 37°C. We next show that approximately half of these genes are transcriptionally repressed in the blastospore state by three transcriptional repressors, Rfg1, Nrg1, and Tup1. We conclude that the relief of this transcriptional repression plays a key role in bringing the C. albicans filamentous growth program into play, and we describe the framework of this transcriptional circuit.

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