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Identification of genes involved in aromatic amino acid metabolism

ABSTRACT: To accurately detect and quantify low abundant transcripts no represented in current EST databases we generated an RNA-seq dataset based on RNA isolated from Petunia hybrida corolla tissue harvested at 8 PM at two developmental stages, day -1 (bud) and day 2 postanthesis (the tissues containing the lowest and highest levels of phenylalanine, respectively).

ORGANISM(S): Petunia x hybrida

PROVIDER: GSE70948 | GEO | 2015/09/09

SECONDARY ACCESSION(S): PRJNA290001

REPOSITORIES: GEO

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Identification of genes involved in aromatic amino acid metabolism

Project description:To accurately detect and quantify low abundant transcripts no represented in current EST databases we generated an RNA-seq dataset based on RNA isolated from Petunia hybrida corolla tissue harvested at 8 PM at two developmental stages, day -1 (bud) and day 2 postanthesis (the tissues containing the lowest and highest levels of phenylalanine, respectively). Total RNA samples were obtained from corollas of at least eight wild-type petunia flowers per biological replicate at the two developmental stages using an RNeasy plant mini kit from Qiagen.

2015-09-09 | E-GEOD-70948 | biostudies-arrayexpress

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Diurnal ChIP-Seq for Petunia hybrida

Project description:To better understand how diurnal transcriptional regulation contributes to day/night cycles of volatile emission from the petunia flower, cross-linked chromatin from corolla in the morning (7AM) and evening (7PM) was immunoprecipitated with antibodies against 4 histone marks associated with trancriptional activity to determine islands enriched for the marks in morning and evening.

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Comprehensive transcriptional profiling analysis reveals candidate regulators in cold-stressed seedlings of Petunia hybrida

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Project description:Investigation of gene expression level changes in Petunia hybrida seedlings subjected to cold at 2°C for 0.5 h, 2 h, 24 h and 5 d, compared to the CK. The custom-designed four-plex microarray with 72000 features was constructed based on the EST sequences generated in Breuillin's study together with all sequences of P.hybrida and P.axillaris available at Genbank, TIGR, and the Solanaceae genomics network SGN, which was ultimately composed by a set of 24816 non-redundant unique sequences (unigenes).The probe intensity files resulting from RNA hybridization were first read into R. Background Correction, quantile normalization and summarization were then performed using the Robust Multi-array Average (RMA) method included in Bioconductor Affy package based on the home made chip description library.

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Petunia hybrida

Project description:Petunia hybrida Transcriptome

| PRJNA572578 | ENA

Project description:Petunia hybrida Transcriptome

| PRJNA693880 | ENA

Revealing impaired pathways in regulatory mutant by high-throughput characterization of Petunia axillaris and Petunia inflata transcriptomes.

Project description:Petunia is an excellent model system, especially for genetic, physiological and molecular studies. Thus far, however, genome-wide expression analysis has been rarely applied because of the lack of sequence information. We applied next-generation sequencing to generate, through de novo read assembly, a large catalogue of transcripts for Petunia axillaris and Petunia inflata. On the basis of the transcriptome of each species, comprehensive microarray chips for gene expression analysis were established and used for the analysis of global- and organ-specific gene expression in both species. In addition, microarray analysis was applied to explore the molecular basis of the seed coat defects in Petunia hybrida mutants, homozygous for a null allele of the AN11 gene, encoding a WDR transcription regulator. Among the transcripts differentially expressed in an11 seeds compared to wild type, many expected targets of AN11 were found but also several interesting new candidates that might play a role in morphogenesis of the seed coat. Our results validate the combination of next-generation sequencing with microarray analyses strategies to identify the transcriptome of two petunia species without previous knowledge of their genome, and to develop comprehensive chips as useful tools for the analysis of gene expression in P. axillaris, P. inflata and P. hybrida.

2012-02-29 | GSE28120 | GEO

Revealing impaired pathways in regulatory mutant by high-throughput characterization of Petunia axillaris and Petunia inflata transcriptomes.

2012-02-29 | E-GEOD-28120 | biostudies-arrayexpress

Project description:Petunia hybrida, plant grafting

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