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The corepressor of Topless-related 1 (TPR1): Transcript analysis of TPR1-GFP lines

ABSTRACT: The corepressor of Topless-related 1 (TPR1): Transcript analysis of TPR1-GFP lines

PROVIDER: PRJNA646960 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12248700.fastq.gz	Fastqsanger.gz
	SRR12248701.fastq.gz	Fastqsanger.gz
	SRR12248702.fastq.gz	Fastqsanger.gz
	SRR12248703.fastq.gz	Fastqsanger.gz
	SRR12248704.fastq.gz	Fastqsanger.gz

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The corepressor of Topless-related 1 (TPR1): Transcript analysis of TPR1-GFP lines

Project description:Transcriptional corepressors of the Topless family are important regulators of plant hormone and immunity signaling. We present here the transcriptome of Arabidopsis thaliana Col-0 plants expressing GFP-tagged TPR1 (Topless-related 1). Expression of TPR1 driven by its own promoter (pTPR1:TPR1-GFP) in Arabidopsis results in EDS1-dependent defense activation and dwarfed growth affected by the plant immune regulator EDS1 but not by accumulation of salicylic acid. We used total RNA sequencing to characterize the transcriptional status of TPR1-GFP expressing lines in Col, eds1-2 and sid2-1 mutant backgrounds.

2021-06-29 | GSE154652 | GEO

Genome-wide chromatin binding of transcriptional corepressor Topless-related 1 in Arabidopsis

Project description:Plant Topless-related 1 (TPR1), belonging to a family of transcriptional corepressors found across eukaryotes, contributes to immunity signaling in Arabidopsis thaliana and wild tobacco. We used chromatin immunoprecipitation and sequencing (ChIP-seq) of Arabidopsis TPR1-GFP expressing transgenic lines to characterize genome-wide TPR1-chromatin associations.

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Serine protease NAL1 exerts pleiotropic functions through degradation of TOPLESS-related corepressor in rice

Project description:NAL1 (NARROW LEAF 1) is a breeding-valuable pleiotropic gene that affects multiple agronomic traits in rice, but the molecular mechanism is largely unclear. Here, we report that NAL1 is a serine protease and displays a novel hexameric structure whose formation is mediated by ATP-containing positively charged pocket at the N-terminal region. Moreover, we identified TOPLESS-related corepressor OsTPR2 involved in multiple growth and development processes as the substrate of NAL1. We found that NAL1 degraded OsTPR2, thus modulating the expression of downstream genes related to hormone signaling pathways, eventually achieving its pleiotropic physiological function. An elite allele NAL1A originated from wild rice could increase grain yield. Furthermore, the NAL1 homologs in different crops have a similar pleiotropic function to NAL1. Our study uncovers a NAL1-OsTPR2 regulatory module and provides gene resources for the design of high-yield crops.

2023-05-09 | GSE207132 | GEO

Genome-wide chromatin binding of transcriptional corepressor Topless-related 1 in Arabidopsis

Project description:Genome-wide chromatin binding of transcriptional corepressor Topless-related 1 in Arabidopsis

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Serine protease NAL1 exerts pleiotropic functions through degradation of TOPLESS-related corepressor in rice

Project description:Serine protease NAL1 exerts pleiotropic functions through degradation of TOPLESS-related corepressor in rice

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Ustilago maydis effector Jsi1 interacts with Topless corepressor, hijacking plant JA/ET signaling

Project description:Ustilago maydis effector Jsi1 interacts with Topless corepressor, hijacking plant JA/ET signaling

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Ustilago maydis effector Jsi1 interacts with Topless corepressor, hijacking plant JA/ET signaling

Project description:• Ustilago maydis (U. maydis) is the causal agent of maize smut disease. During the colonization process, the fungus secretes effector proteins which suppress immune responses and redirect the host metabolism in favor of the pathogen. As effectors play a critical role during plant colonization, their identification and functional characterization is essential to understanding biotrophy and disease. • Using biochemical, molecular, and transcriptomic techniques, we performed a functional characterization of the U. maydis effector Jasmonate/Ethylene signaling inducer 1 (Jsi1). • Jsi1 interacts with several members of the plant co‐repressor family Topless/Topless related (TPL/TPR). Jsi1 expression in Zea mays (Z. mays) and Arabidopsis thaliana (A. thaliana) leads to transcriptional induction of the ethylene response factor (ERF) branch of the jasmonate/ethylene (JA/ET) signaling pathway. In A. thaliana, activation of the ERF‐branch leads to biotrophic susceptibility. Jsi1 likely activates the ERF‐branch via an EAR motif, which resembles EAR motifs from plant ERF transcription factors, that interacts with TPL/TPR proteins. • EAR motif‐containing effector candidates were identified from different fungal species including Magnaporthe oryzae, Sporisorium scitamineum, and Sporisorium reilianum. Interaction between plant TPL proteins and these effector candidates from biotrophic and hemibiotrophic fungi indicates the convergent evolution of effectors modulating the TPL/TPR co‐repressor hub.

2020-11-30 | GSE142128 | GEO

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Project description:NINJA (At4g28910) and TOPLESS proteins function as negative regulators of jasmonate responses. Our results point to TPL proteins as general co-repressors that affect multiple signalling pathways through the interaction with specific adaptor proteins. This new insight reveals how stress- and growth-related signalling cascades use common molecular mechanisms to regulate gene expression in plants.

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The fungal pathogen Ustilago maydis targets the maize corepressor TPL2 to modulate host transcription for tumorigenisis

Project description:Ustilago maydis is a biotrophic fungus that causes tumor formation on all aerial parts of maize. U. maydis secretes effector proteins during penetration and colonization to successfully overcome the plant immune response and reprogram host physiology to promote infection. In this study, we functionally characterized the U. maydis effector protein Topless (TPL) interacting protein 6 (Tip6). We found that Tip6 interacts with the N-terminus of ZmTPL2 through its two EAR (Ethylene-responsive element binding factor-associated amphiphilic repression) motifs. We show that the EAR motifs are essential for the virulence function of Tip6 and critical for altering the nuclear distribution pattern of ZmTPL2. We propose that Tip6 mimics the recruitment of ZmTPL2 by plant repressor proteins, thus disrupting host transcriptional regulation. We show that a large group of AP2/ERF B1 subfamily transcription factors are misregulated in the presence of Tip6. Our study suggests a regulatory mechanism where the U. maydis effector Tip6 utilizes repressive domains to recruit the corepressor ZmTPL2 to disrupt the transcriptional networks of the host plant.

2023-11-09 | PXD042605 | Pride

RNAseq of GFP-sorted cells (Low-GFP vs. High-GFP, GFP-fed vs GFP+fed)

Project description:RNAseq of GFP-sorted cells (Low-GFP vs. High-GFP, GFP-fed vs GFP+fed)

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