Ontology highlight
ABSTRACT:
PROVIDER: PRJNA765475 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR16842669_1.fastq.gz | Fastqsanger.gz | |||
| SRR16842669_2.fastq.gz | Fastqsanger.gz | |||
| SRR16842670_1.fastq.gz | Fastqsanger.gz | |||
| SRR16842670_2.fastq.gz | Fastqsanger.gz | |||
| SRR16842671_1.fastq.gz | Fastqsanger.gz |
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Project description:Valencia orange (Citrus sinensis Osbeck), namely summer orange (SO), is a type of late-ripening sweet oranges, the ripening time of which is 4 to 5 months later than that of the middle-ripening common sweet orange (CO). The mastication of SO fruit pulp is worse than that of CO. To date, how the late-ripening and poor pulp mastication traits were domesticated in SO is unknown. In this study, 13 SO cultivars and 12 CO cultivars were used for whole-genome resequencing. Population genetic diversity analysis divided these 25 samples into SO and CO subgroups, respectively. There were 144 and 141 genes identified by selective sweep analysis to be strongly selected during SO and CO evolutionary processes, respectively. Based on gene functional annotation and pathway enrichment analysis, most of these selected genes in SO were related to resistance and lignin biosynthesis. Simultaneously, we comparatively analyzed the transcriptome profiles of the peel and pulp tissues among three SO cultivars and three CO cultivars, which also revealed the difference of lignin synthesis between SO and CO fruits. Moreover, according to the comparative analysis of the lignin content and the expressions of the genes related to lignin biosynthesis in SO and CO fruits, we suggested that lignin may play an important role in the pulp mastication trait of SO. In addition, a SNP molecular marker was developed to distinguish SO and CO. This study reveals that the mastication trait may be formed in the process of SO domestication, while the late-ripening trait may be formed in a genetic mutation event.
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Project description:In this study, we aim to generate genome-scale DNA methylation profiles at single-base resolution in different rice cultivars (IR64, Nagina 22 and Pokkali) under control and stress conditions. Using high-throughput whole genome bisulfite Sequencing, we generated DNA methylation maps covering the vast majority of cytosines in the rice genome. More than 152 million high quality reads were obtained for each tissue sample using Illumina platform. We discovered extensive DNA methylation in rice cultivars, identified the context and level of methylation at each site.Numerous differentially methylated regions (DMRs) among different cultivars under control and stress conditions were identified and many of them were associated with differential gene expression. The high resolution methylome maps of different rice genotypes and differentially methylated regions will serve as reference for understanding the epigenetic regulation of stress responses in plants. Whole genome bisulfite sequencing of seven control/stressed samples from three rice cultivars (IR64, N22 and Pokkali)
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Project description:Transcriptional profiling of pear tree comparing a resistant/tolerant cultivar with a susceptible cultivar to the Stemphylium vesicarium fungus Rocha' pear is an economically important portuguese Pyrus communis L. cultivar very susceptible to the Stemphylium vesicarium pathogenic fungus, the brown spot agent, causing huge decrease on fruit quality and yield production. Field control of brown spot disease is based in systemic application of antifungal chemicals with high economic costs and dramatic consequences to public health and environmental pollution. Plant-pathogen interactions involve a series of events encompassing constitutive and induced plant defence responses whose dissection has been a research target for control many crop diseases. The biosynthesis of cell wall polymers and antifungal compounds appear to be an efficient physical and chemical barrier to infection.To understand the molecular responses behind defence mechanisms of resistant/tolerant and susceptible cultivars of Pyrus communis L. to the S. vesicarium fungus, cDNA microarray technology was used to identify the genes differentially expressed along a time course leaf inoculation between 'Rocha' pear cultivar (a high susceptible cultivar) and 'Ercolini' pear cultivar (a resistant/tolerant pear cultivar). This study aims to contribute with information on the molecular mechanisms involved in host-pathogen interactions responsible for pear tree brown spot disease and resistance to Stemphylium vesicarium. Experimental condition: 'Ercolini' vs 'Rocha' (each experiment including 5 plants from each cultivar). 3 time-points: water-inoculation (T0h), 6 hours after inoculation with S. vesicarium (T6h) and 24 hours after inoculation with S. vesicarium. Biological replicates: 3 in each time-point. One replicate per array.
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Project description:Transcriptional profiling of pear tree comparing a resistant/tolerant cultivar with a susceptible cultivar to the Stemphylium vesicarium fungus Rocha' pear is an economically important portuguese Pyrus communis L. cultivar very susceptible to the Stemphylium vesicarium pathogenic fungus, the brown spot agent, causing huge decrease on fruit quality and yield production. Field control of brown spot disease is based in systemic application of antifungal chemicals with high economic costs and dramatic consequences to public health and environmental pollution. Plant-pathogen interactions involve a series of events encompassing constitutive and induced plant defence responses whose dissection has been a research target for control many crop diseases. The biosynthesis of cell wall polymers and antifungal compounds appear to be an efficient physical and chemical barrier to infection.To understand the molecular responses behind defence mechanisms of resistant/tolerant and susceptible cultivars of Pyrus communis L. to the S. vesicarium fungus, cDNA microarray technology was used to identify the genes differentially expressed along a time course leaf inoculation between 'Rocha' pear cultivar (a high susceptible cultivar) and 'Ercolini' pear cultivar (a resistant/tolerant pear cultivar). This study aims to contribute with information on the molecular mechanisms involved in host-pathogen interactions responsible for pear tree brown spot disease and resistance to Stemphylium vesicarium.
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