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A TALE homeodomain transcription factors-binding protein recruits Polycomb Repressive Complex 2 to a subset of loci in rice shoot apical meristem [ChIP-seq]

ABSTRACT: A TALE homeodomain transcription factors-binding protein recruits Polycomb Repressive Complex 2 to a subset of loci in rice shoot apical meristem [ChIP-seq]

PROVIDER: PRJNA762474 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15852787.fastq.gz	Fastqsanger.gz
	SRR15852788.fastq.gz	Fastqsanger.gz

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A TALE homeodomain transcription factors-binding protein recruits Polycomb Repressive Complex 2 to a subset of loci in rice shoot apical meristem

Project description:A TALE homeodomain transcription factors-binding protein recruits Polycomb Repressive Complex 2 to a subset of loci in rice shoot apical meristem

| PRJNA762472 | ENA

A TALE homeodomain transcription factors-binding protein recruits Polycomb Repressive Complex 2 to a subset of loci in rice shoot apical meristem [ChIP-seq]

Project description:In this work, we investigated the function of PAP1 (LOC_Os03g01840) in gene expression, H3K27 tri-methylation, and Polycomb Repressive Complex 2 (PRC2) binding by high-throughput approaches. The PAP1 loss-of-function results in defects of meristem development and gene expression similar to those of PRC2 and/or KNOX gene mutants and decreases of H3K27me3 and PRC2 binding at KNOX-binding genes in the meristem. PAP1-meidated PRC2 recruitment may contribute to H3K27me3 shifting from heterochromatin silencing to developmental gene repression during land plant evolution.

2021-09-14 | GSE183949 | GEO

Microdissection: Transdifferentiation of Root Apical Meristem to Shoot Apical Meristem

Project description:gnp07_regeneome_transdifferenciation - microdissection - Study of the moleculars mecanism during transdifferenciation of Root ApicalMeristem to Shoot Apical Meristem - middle of growth permits to induce transdifferenciation of root apical meristem to shoot apical meristem

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Microdissection: Transdifferentiation of Root Apical Meristem to Shoot Apical Meristem

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Transdifferentiation from root to shoot apical meristem

Project description:au10-15_cineroots - transdifferentiation - Study of the molecular mechanism during transdifferenciation from root apical meristem to shoot apical meristem - culture in middle with different hormons, permits transdifferenciation from root to shoot tissues.

2012-02-01 | GSE30515 | GEO

Proteome of rice shoot apical meristem

Project description:DNA methylation is an epigenetic modification that specifies the basic state of pluripotent stem cells and regulates the developmental transition from stem cells to various cell types. In flowering plants, the shoot apical meristem (SAM) contains a pluripotent stem cell population which generates the aerial part of plants including the germ cells. Under appropriate conditions, the SAM undergoes a developmental transition from a leaf-forming vegetative SAM to an inflorescence- and flower-forming reproductive SAM. While SAM characteristics are largely altered in this transition, the complete picture of DNA methylation remains elusive. Here, by analyzing whole-genome DNA methylation of isolated rice SAMs in the vegetative and reproductive stages, we found that methylation at CHH sites is kept high, particularly at transposable elements (TEs), in the vegetative SAM relative to the differentiated leaf, and increases in the reproductive SAM via the RNA-dependent DNA methylation pathway. We also found that half of the TEs that were highly methylated in gametes had already undergone CHH hypermethylation in the SAM. Our results indicate that changes in DNA methylation begin in the SAM long before germ cell differentiation to protect the genome from harmful TEs.

2020-08-14 | PXD020608 | Pride

Transdifferentiation from root to shoot apical meristem

2012-02-01 | E-GEOD-30515 | biostudies-arrayexpress

A TALE homeodomain transcription factors-binding protein recruits Polycomb Repressive Complex 2 to a subset of loci in rice shoot apical meristem

Project description:This SuperSeries is composed of the SubSeries listed below.

2021-09-14 | GSE183951 | GEO

Molecular Dissection of Pea Shoot Apical Meristem

Project description:Knowledge about an organism’s cell and tissue-specific transcriptional repertoire is essential for understanding the gene regulatory circuits that control key developmental events. The shoot apical meristem (SAM) is responsible for development of all the above ground parts of plants. Our understanding of SAM at the molecular level is far from complete. The present work investigates the global gene expression repertoire of SAMs in the garden pea (Pisum sativum). To this end, 10,346 EST sequences representing 7611 unique genes were generated from pea SAM cDNA libraries. These sequences, together with previously reported ESTs, were used to construct a 12K oligonucleotide array used to identify genes exhibiting differential SAM expression, as compared to the axillary meristem, root apical meristem, and non-meristematic tissues. We identified a number of genes that are predominantly expressed in specific cell layers or domains of the SAM, and thus are likely components of the gene networks involved in stem cell maintenance and initiation of lateral organ primordial cells. In situ hybridization confirmed the spatial localisation of some of these key genes within the SAM. Our data also indicate the diversification of some gene expression patterns and functions in legume crop plants.

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Project description:Background: It has been observed in some plant-virus interaction under certain circumstances that the plants show a sign of healing from virus-infection, a phenomenon called symptom recovery. The nature of molecular processes behind symptom recovery has been an enigma in plant virology for a long time. Discovery of RNA silencing provided a possible mechanism to explain some aspects of recovery but not all. Results: We provide evidence that silencing is not the reason for recovery in CymRSV-infected Nicotiana benthamiana plants. Transcriptome analysis followed by in situ hybridization experiments shed light on the expressional changes in the shoot apical meristem (SAM) region upon virus infection. We observed a severe loss of meristem function in the SAM which was accompanied by the downregulation of meristem-specific genes. Among the upregulated genes we found an enrichment of salicylate-metabolism and signalling, and autophagy-related functions (among many others) suggesting that these genes might play a role in shoot necrosis and symptom recovery. Conclusion: Our data suggest that the loss of meristem function is a result of salicylate-induced programmed cell death.

2019-09-12 | GSE131476 | GEO

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