Transcriptomic analysis during zygotic embryo development of Pinus pinaster
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB21602 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| Other | ||||
| ERR2021873_1.fastq.gz | Fastqsanger.gz | |||
| ERR2021873_2.fastq.gz | Fastqsanger.gz | |||
| ERR2021874_1.fastq.gz | Fastqsanger.gz | |||
| ERR2021874_2.fastq.gz | Fastqsanger.gz |
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Project description:The significant morphological differences observed during embryo development in angiosperms and gymnosperms are expected to be the result of a differential control of gene expression. We used a loblolly pine (Pinus taeda) cDNA microarray to analyze global transcriptional changes along zygotic embryogenesis in maritime pine (Pinus pinaster). A time-course analysis of the data obtained from the five embryo developmental groups used in this study led to the identification of 4,645 genes whose expression varied along P. pinaster embryogenesis. These transcripts were clustered into six distinct expression profiles. The grouping of these profiles in early, mid-embryogenesis and embryo maturation, according to the developmental period where most of the sequences were up-regulated, evidenced that characteristic transcriptional changes are associated to each developmental period. The application of a cut-off value of 1.95-fold change led to the identification of 1,838 differentially expressed transcripts that were categorized by biological process. Metabolism, interaction with the environment, oxidation-reduction and transport were some of the most represented categories. During early embryogenesis genes putatively involved in phytohormone-mediated signaling were identified, whereas in middle stages the overrepresented genes could be associated with cotyledon formation and induction of somatic embryogenesis. Genes associated with the synthesis of storage products were up-regulated in the latest stages of pine embryo development. It was also during this developmental period that the largest number of sequences putatively encoding transcription factors was identified.
2012-01-30 | GSE32551 | GEO
Project description:The significant morphological differences observed during embryo development in angiosperms and gymnosperms are expected to be the result of a differential control of gene expression. We used a loblolly pine (Pinus taeda) cDNA microarray to analyze global transcriptional changes along zygotic embryogenesis in maritime pine (Pinus pinaster). A time-course analysis of the data obtained from the five embryo developmental groups used in this study led to the identification of 4,645 genes whose expression varied along P. pinaster embryogenesis. These transcripts were clustered into six distinct expression profiles. The grouping of these profiles in early, mid-embryogenesis and embryo maturation, according to the developmental period where most of the sequences were up-regulated, evidenced that characteristic transcriptional changes are associated to each developmental period. The application of a cut-off value of 1.95-fold change led to the identification of 1,838 differentially expressed transcripts that were categorized by biological process. Metabolism, interaction with the environment, oxidation-reduction and transport were some of the most represented categories. During early embryogenesis genes putatively involved in phytohormone-mediated signaling were identified, whereas in middle stages the overrepresented genes could be associated with cotyledon formation and induction of somatic embryogenesis. Genes associated with the synthesis of storage products were up-regulated in the latest stages of pine embryo development. It was also during this developmental period that the largest number of sequences putatively encoding transcription factors was identified. Pine immature zygotic embryos were pooled into five different developmental groups according to the collection date (Day0; Day5; Day11; Day15 and Day25). A common reference design was used. Total RNA was extracted from each sample. Three extractions were prepared per sample (biological replicates). A defined ammount from each RNA sample was pooled to use as reference. Messenger RNA was amplified for both test samples and reference. These were hybridized together in two separate experiments (technical replicates). In total, 30 slides were analyzed.
2012-01-30 | E-GEOD-32551 | biostudies-arrayexpress
Project description:The transcriptome of PpNAC1 RNAi Pinus pinaster plantlets (60 days) were analyzed.
2018-01-22 | GSE89341 | GEO
Project description:Embryos and megagametophytes samples belonging to four early developmental stages during seed development in Pinus sylvestris were collected from a seed orchard in central Sweden. Dominant (DO) and subordinate (SU) zygotic embryos were collected separately. RNA was isolated from this samples and the corresponding cDNA synthesized and subjected to RNA sequencing (one biological replicate). In total nine RNA-seq libraries were constructed, five for embryo samples (E1, E2, E3DO, E3SU, E4) and four for megagametophytes (M1, M2, M3 and M4). qRT-PCR analysis have been done to validate the RNA-seq expression results.
2017-01-09 | E-MTAB-5193 | biostudies-arrayexpress
Project description:Pinus pinaster seeds from different zygotic embryogenic stages
| PRJNA219235 | ENA
Project description:BACKGROUND: It is during embryogenesis that the plant body plan is established and the meristems responsible for all post-embryonic growth are specified. The molecular mechanisms governing conifer embryogenesis are still largely unknown. Their elucidation may contribute valuable information to clarify if the distinct features of embryo development in angiosperms and gymnosperms result from differential gene regulation. To address this issue, we have performed the first transcriptomic analysis of zygotic embryo development in a conifer species (Pinus pinaster) focusing our study in particular on regulatory genes playing important roles during plant embryo development, namely epigenetic regulators and transcription factors. RESULTS: Microarray analysis of P. pinaster zygotic embryogenesis was performed at five periods of embryo development from early developing to mature embryos. Our results show that most changes in transcript levels occurred in the first and the last embryo stage-to-stage transitions, namely early to pre-cotyledonary embryo and cotyledonary to mature embryo. An analysis of functional categories for genes that were differentially expressed through embryogenesis highlighted several epigenetic regulation mechanisms. While putative orthologs of transcripts associated with mechanisms that target transposable elements and repetitive sequences were strongly expressed in early embryogenesis, PRC2-mediated repression of genes seemed more relevant during late embryogenesis. On the other hand, functions related to sRNA pathways appeared differentially regulated across all stages of embryo development with a prevalence of miRNA functions in mid to late embryogenesis. Identification of putative transcription factor genes differentially regulated between consecutive embryo stages was strongly suggestive of the relevance of auxin responses and regulation of auxin carriers during early embryogenesis. Such responses could be involved in establishing embryo patterning. Later in development, transcripts with homology to genes acting on modulation of auxin flow and determination of adaxial-abaxial polarity were up-regulated, as were putative orthologs of genes required for meristem formation and function as well as establishment of organ boundaries. Comparative analysis with A. thaliana embryogenesis also highlighted genes involved in auxin-mediated responses, as well as epigenetic regulation, indicating highly correlated transcript profiles between the two species. CONCLUSIONS: This is the first report of a time-course transcriptomic analysis of zygotic embryogenesis in a conifer. Taken together our results show that epigenetic regulation and transcriptional control related to auxin transport and response are critical during early to mid stages of pine embryogenesis and that important events during embryogenesis seem to be coordinated by putative orthologs of major developmental regulators in angiosperms.
| S-EPMC3844413 | biostudies-literature
Project description:The transcriptome of needles from plants propagated by cuttings and cultured in the same conditions at SERIDA’s greenhouse at Villaviciosa (Asturias, Spain) were analyzed. The cuttings are from two different provenances of Pinus pinaster; Leiria (Portugal) and Tamrabta (Morocco). Their transcriptomes were analyzed using high throughput sequencing
2015-11-04 | GSE61923 | GEO
Project description:The transcriptome of needles from plants propagated by cuttings and cultured in the same condictions at SERIDAâs greenhouse at Villaviciosa (Asturias, Spain) were analyzed. The cuttings are from two different provenances of Pinus pinaster; Leiria (Portugal) and Tamrabta (Morocco). Their transcriptomes were analyzed using one color microarrays.
2015-11-04 | E-GEOD-61801 | biostudies-arrayexpress
Project description:Proteomic analysis of needle and apical and basal bud sections from three contrasting Pinus pinaster provenances growth in a common garden.
2024-06-17 | PXD048701 | Pride