Ontology highlight
ABSTRACT:
PROVIDER: PRJNA928708 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR23274395_1.fastq.gz | Fastqsanger.gz | |||
| SRR23274395_2.fastq.gz | Fastqsanger.gz | |||
| SRR23274396_1.fastq.gz | Fastqsanger.gz | |||
| SRR23274396_2.fastq.gz | Fastqsanger.gz | |||
| SRR23274397_1.fastq.gz | Fastqsanger.gz |
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Project description:Holm oak (Quercus ilex) is the most important and representative specie of the Mediterranean forest and of the Spanish agrosilvo-pastoral ecosystem “Dehesa”. Despite its environmental and economic interest, Holm oak is still an orphan species whose biology is very little known, especially at the molecular level. In this research, we have performed a shotgun proteomic approach (nLC-MSMS, Orbitrap) to analyze the Holm oak proteome, using, as starting material, a pool generated by mixing equal amounts of homogenized tissue, including embryo, cotyledons (from mature acorns), and leaves and roots (from 6-month old plantlets grown in a greenhouse under environmental conditions). The proteome generated will be the bases of further studies on population variability, growth, development and responses to stresses in this species.
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Project description:The periderm is basic for land plants due to its protective role during radial growth, which is achieved by the polymers deposited in the cell walls. Despite the research on the topic has unravelled the role of several enzymes and transcription factors, many questions remain open, especially those regarding cell development. Here we use the outer bark of cork oak (cork), holm oak (rhytidome), and their natural hybrids’ to further understand the mechanisms underlying periderm development. Cork is an outstanding model as it consists of a thick and very homogeneous periderm produced by a permanent mother-cell layer (phellogen). Conversely, holm oak contains a more heterogeneous bark including several thin periderms mixed with phloem, also known as a rhytidome. The inclusion of hybrid samples showing rhytidome-type and cork-type barks is valuable to approach cork development, allowing an accurate identification of candidate genes and processes. The present study underscores that biotic stress and cell death signalling are enhanced in rhytidome-type barks while lipid metabolism and cell cycle are enriched in cork-type barks. Based on the DEGs most expressed related to development, we highlight that cell division, cell expansion, and cell differentiation could account for the differences found between cork and rhytidome-type barks.
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Project description:Applying a gel-based proteomic approach, the dynamic changes in root proteins of drought treated Quercus ilex subsp. Ballota [Desf.] Samp. seedlings were followed. Water stress was applied on 20 day-old holm oak plantlets by water limitation for a period of 10 and 20 days, each followed by 10 days of recovery. Root proteins were extracted using trichloroacetate/acetone/phenol protocol and subjected to two-dimensional electrophoresis. Coomassie colloidal stained gel images were analysed and spot intensity data subjected to multivariate statistical analysis. Selected consistent spots in the three biological replicas, presenting significant changes under stress, were subjected to MALDI-TOF mass spectrometry (peptide mass fingerprinting and MS/MS). For protein identification, combined search was performed with MASCOT search engine over NCBInr Viridiplantae and Uniprot databases. Taxonomy Holm oak (Quercus ilex subsp. Ballota [Desf.] Samp.). Dentro de Q. ilex hay dos subespecies, ilex ilex e ilex Ballota.
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Project description:Metagenomics from holm-oak rhizosphere from Oak Forest in Sierra Nevada
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Project description:The pathological interaction between oak trees and Phytophthora cinnamomi has implications in the cork oak decline observed over the last decades in the Iberian Peninsula. During host colonization, the phytopathogen secretes effector molecules like elicitins to increase disease effectiveness. The objective of this study was to unravel the proteome changes associated to with the cork oak immune response triggered by P. cinnamomi inoculation in a long-term assay, through SWATH-MS quantitative proteomics performed in the oak leaves. Using the Arabidopis thaliana proteome database as a reference, 424 proteins have been confidently quantified in cork oak leaves, of which 80 proteins showed a p-value below 0.05 or a fold-change greater than 2 or less than 0.5 in their levels between control and inoculated samples being considered as altered. The inoculation of cork oak roots with P. cinnamomi increased the levels of proteins associated with protein-DNA complex assembly, lipid oxidation, response to endoplasmic reticulum stress, and pyridine-containing compound metabolic process in the leaves. In opposition, several proteins associated with cellular metabolic compound salvage and monosaccharide catabolic process had significantly decreased abundances. The most significant abundance variations were observed for the Ribulose 1,5-Bisphosphate Carboxylase small subunit (RBCS1A), Heat Shock protein 90-1 (Hsp90-1), Lipoxygenase 2 (LOX2) and Histone superfamily protein H3.3 (A8MRLO/At4G40030) revealing a pertinent role for these proteins in the host-pathogen interaction mechanism. This work represents the first SWATH-MS analysis performed in cork oak plants inoculated with P. cinnamomi and highlights host proteins that have a relevant action in the homeostatic states that emerge from the interaction between the oomycete and the host in the long term and in a distal organ.
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2022-11-11 | PXD017493 | Pride
Project description:RNA molecules within ejaculated sperm can be characterized through whole transcriptome sequencing, enabling the identification of pivotal transcripts that may influence reproductive success. However, the profiling of sperm transcriptomes through next-generation sequencing has several limitations impairing the identification of functional transcripts. In this study, we explored the nature of the RNA sequences present in the sperm transcriptome of two livestock species, cattle and horses using RNA-Sequencing (RNA-Seq) technology. Low mapping rates observed during data processing were mainly attributed to the presence of ribosomal RNA and bacteria in sperm samples which led to a reduced sequencing depth or library size. To explore the possibility that unmapped reads could be associated with bacteria, we then identified bacteria-associated transcripts within RNA-Seq data derived from bovine and equine sperm cell preparations. This analysis revealed bacterial species that may closely interact with sperm and potentially influence male fertility. Identifying these potentially pathogenic or beneficial species and understanding how they may affect sperm quality in each species could be paramount to assess the breeding capacity of livestock.
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