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Transcriptional regulation of cell division and cytokinin response in Arabidopsis shoot apical meristem [ChIP-seq]

ABSTRACT: Transcriptional regulation of cell division and cytokinin response in Arabidopsis shoot apical meristem [ChIP-seq]

PROVIDER: PRJNA602983 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10949300.fastq.gz	Fastqsanger.gz
	SRR10949301.fastq.gz	Fastqsanger.gz
	SRR10949302_1.fastq.gz	Fastqsanger.gz
	SRR10949302_2.fastq.gz	Fastqsanger.gz
	SRR10949303.fastq.gz	Fastqsanger.gz

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Transcriptional regulation of cell division and cytokinin response in Arabidopsis shoot apical meristem

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Project description:We investigated the chromatin modifications H3K4me3 and H3K27me3 in the A. thaliana shoot apical meristem using INTACT reporter lines. Samples were collected in two biological replications.

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Transcript profiling of the pea shoot apical meristem highlights processes underlying its function and maintenance

Project description:Plant growth is the result of cell proliferation in the meristems, which requires a dynamic balance between the formation of new tissue and the maintenance of a set of undifferentiated stem cells. There is much that remains unknown about this vital developmental process. In this study, we have reported the generation of 2735 ESTs from three cDNA libraries derived from dissected garden pea (Pisum sativum cv Torsdag) shoot apical meristems. Clustering analysis of the resulting sequences gave rise to 1686 non-redundant ESTs. The unique sequences generated together with 500 other pea transcripts randomly selected from the GenBank pea protein database have been utilized to construct a 2K oligonucleotide array. Using this pea array, we have obtained the transcript profiles of pea shoot apical meristems in comparison to non-apical-meristem tissues. A total of 181 or 174 transcripts were identified to be significantly up- or down-regulated in the pea shoot apical meristem, respectively. As expected, close to 61% of the transcripts down-regulated in the shoot apical mersitem are those retrieved from the public database, whereas sequences from the same source only made up 12% of the genes that were expressed at higher levels in SAMs. This revelation highlights the under-representation of transcripts from the meristmatic tissues in the current public protein database. Manual inspection of the list of up-regulated transcripts reveals the presence of sequences predicted to encode products associated with cell division and proliferation, epigenetic regulation, auxin-mediated responses and miRNA regulation. Similar genes have been implicated in the regulation of plant stem cell activity. Taken together, our EST collection as well as the microarray data provides useful starting points for more in depth analysis of the meristem function and maintenance. Keywords: shoot apical meristem transcript profiling

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