Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1017815 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR26070046.fastq.gz | Fastqsanger.gz | |||
| SRR26070047.fastq.gz | Fastqsanger.gz | |||
| SRR26070048.fastq.gz | Fastqsanger.gz | |||
| SRR26070049.fastq.gz | Fastqsanger.gz | |||
| SRR26070050.fastq.gz | Fastqsanger.gz |
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Project description:Brassica oleracea and Brassica napus are comprised of diverse cultivars that collectively constitute an important global food source. Of those, the Brassica oleracea convar. acephala cultivar group containing var. sabellica and var. palmifolia and Brassica napus var. pabularia, collectively known as kale, are nutritious leafy greens consumed for their abundance of vitamins and micronutrients. Typified by their curly, serrated or wavy leaves, kale varieties have been primarily defined based on their leaf morphology and geographic origin, despite maintaining complex genetic backgrounds. With changes in the diel molecular environment directly tied to multiple agronomic traits across the food production landscape (e.g. time-of-day nutritional content) and kale representing a candidate crop for vertical farming, we selected nine diverse kale varieties encompassing a wide swath of consumer kale varieties for growth under LED lights using precise real-world dawn/dusk growth conditions followed by quantitative GC-MS metabolomic and LC-MS proteomic analyses. With plant growth and development driven by the day-to-day molecular activities of plants, we harvested kale leaf tissue at end-of-day (ED) and end-of-night (EN) time-points for all metabolomic and proteomic analyses. Our results reveal that kale forms 2 distinct groups, defined by their diel metabolome and proteome signatures primarily involving amino acids and sugars along, with proteome changes in carbon and nitrogen metabolism, mRNA splicing, protein translation and light harvesting. Together, our analysis have derived robust quantitative insights into the diel growth and development landscape of kale, significantly advancing our fundamental understanding of this nutritious leafy green for next-generation breeding and biotechnology.
2023-07-26 | PXD031780 | Pride
Project description:Morphotypes of Brassica oleracea are the result of a dynamic interaction between the genes that regulate the transition between vegetative and reproductive stages and those that regulate leaf morphology and plant architecture. In kales ornate leaf patterns, flowering delaying and nutrient quality are some of the characters were potentially selected by humans during domestication. Understanding candidate genes responsible for kale domestication is of importance to ultimately improve crop production. We aim to identify candidate genes that are responsible for kale leaf shape diversity and the evolution of domestic kale. Here we look at the global pattern of expressed genes during one single phase of development in kale, cabbage and TO1000 to gain an understanding of the genome-wide differences among some of the vegetative B. oleracea phenotypes. We identified gene expression patterns that are shared among the phenotypes and estimate the contribution of morphotype-specific gene expression patterns that set each of them apart. Differentially expressed developmental genes that regulate the vegetative to reproductive transition were abundant and present in all comparisons.
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Project description:Several different mechanisms have been proposed to explain the possible role of cranberries, cranberry juice, and cranberry extracts in inhibiting bacterial growth. In this report, we showed that Escherichia coli showed slower growth rate in response to the presence of cranberry juice in the growth media. By compareing the global transcript profiles, significant modulation of several genes of E. coli grown in LB broth with 10% cranberry juice were identified and provided identification of the potential mechanisms involved in the inhibitory effects of cranberry juice. The results presented clearly demonstrate that the inhibitory effect on bacterial growth observed in the presence of cranberry juice/extracts is primarily a result of the iron chelation capacity of PACs and direct disruption of metabolic enzymes. The results are discussed with a focus on the genes associated with iron chelation capability. Keywords: growth inhibition of cranberry juice
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Project description:In this study, we investigated the effects of organic vegetable juice supplementation on modulating the microbial community, and how its consumption ameliorates blood lipid profiles in diet-induced obese mice. Here, we analyzed the effect of organic vegetable juice on the microbial community and fatty acid synthesis via animal experiments using diet-induced obese mice and continuous colon simulation system. Organic vegetable juice supplement influenced intestinal bacterial composition from phylum to genus level, including decreased Proteobacteria in the ascending colon in the phylum. At the family level, Akkermansia which are associated with obesity, were significantly augmented in the transverse colon and descending colon compared to the control juice group. In addition, treatment with organic vegetable juice affected predicted lipid metabolism function genes related to lipid synthesis. Organic vegetable juice consumption did not have a significant effect on weight loss but helped reduce epididymis fat tissue and adipocytes. Additionally, blood lipid profiles, such as triglyceride, high-density lipoprotein, and glucose, were improved in the organic vegetable juice-fed group. Expression levels of genes related to lipid synthesis, including SREBP-1, PPARγ, C/EBPα, and Fas, were significantly decreased. Analysis of antioxidant markers, including 8-OHdG and MDA, in the vegetable juice group, indicated that blood lipid profiles were improved by the antioxidant effect. These results suggest that organic vegetable juice supplementation may modulate gut microbial community and reduce the potential role of hyperlipidemia in diet-obese mice.
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Project description:Listeria monocytogenes (Lm) cells can attach to both cantaloupe surface and food contact surfaces and promote biofilm growth. This study was to understand the impact of cantaloupe juice on the physiology and transcriptome of Lm planktonic cells and biofilm cells grown on stainless steel coupons using confocal laser scanning microscopy (CLSM), Cryo-Scanning Electron Microscopy (Cryo-SEM) and RNA Seq technology. Lm showed a strong autoaggregation phenotype when grown in cantaloupe juice at room temperature. It is interesting to note that Lm formed significantly more biofilms on stainless steel (SS) coupons when grown in cantaloupe juice than in TSB. SEM images revealed a different attachment profile of Lm on SS coupons. In TSB, Lm cells were mainly found in scratches/groves of the metal surface, whereas, in cantaloupe juice they attached to the smooth surface as well. Interestingly, Lm planktonic and biofilm cells in cantaloupe juice showed an elongated cell shape which might be a stress-induced phenotype in cantaloupe juice. Cantaloupe juice induced a distinct transcriptional profile of biofilm and planktonic cells of Lm from TSB. Functional annotation indicated that the significantly differentially expressed genes (DEGs, Padj < 0.05, log2foldchange ≥ 1) from the comparison mainly participated in metabolism, signaling and stress response. Notably, certain pathways downregulated for planktonic cells were significantly upregulated for biofilm cells in cantaloupe juice compared to TSB, including ABC transporters, two-component system, quorum sensing, chemotaxis, and flagellar assembly. These data highlighted the interaction of Lm with food matrix (i.e., cantaloupe) and the role of food matrix on Lm survival and adaptation. These results provided the basis for future functional characterization of genes with potential roles in biofilm formation and persistence of Lm in cantaloupe juice, as well as for development of mitigation practices for Lm biofilms on produce and food contact surfaces.
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Project description:Escherichia coli O157:H7 has caused serious outbreaks of foodborne illness via transmission in a variety of food vehicles, including unpasteurized apple juice, dried salami, and spinach. To understand how this pathogen responds to the multiple stresses of the food environment, we compared global transcription patterns after exposure to apple juice. Transcriptomes of mid-exponential and stationary phase cells were evaluated after 10 minutes in model apple juice (pH3.5) using microarrays probing 4,886 ORFs. Significant changes in gene expression were determined using R/MAANOVA and the Fs test. A total of 331 ORFs were significantly induced upon exposure of cells to model apple juice and included genes involved in the acid and osmotic stress responses as well as the oxidative stress response and envelope stress. Genes involved in the acid and osmotic stress responses, including asr, osmC, osmB, and osmY were significantly induced in response to model apple juice. Genes involved in the envelope stress response, known to be controlled by CpxR (cpxP, degP, and htpX), were significantly induced 2 to 15 fold upon exposure to apple juice, independent of growth phase. Inactivation of CpxRA resulted in a significant decrease in survival of O157:H7 in model apple juice compared to the isogenic parent strain. Of the 331 ORFs induced in model apple juice, 104 are O157-specific ORFs, including those encoding type three secretion effectors espJ, espB, espM2, espL3 and espZ. By elucidating the response of O157:H7 to acidic foods, we hope to gain insights into how this pathogen is able to survive in food matrices and how exposure to foods affects subsequent transmission and virulence. Keywords: stress
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2016-03-09 | E-MTAB-2677 | biostudies-arrayexpress
Project description:Several different mechanisms have been proposed to explain the possible role of cranberries, cranberry juice, and cranberry extracts in inhibiting bacterial growth. In this report, we showed that Escherichia coli showed slower growth rate in response to the presence of cranberry juice in the growth media. By compareing the global transcript profiles, significant modulation of several genes of E. coli grown in LB broth with 10% cranberry juice were identified and provided identification of the potential mechanisms involved in the inhibitory effects of cranberry juice. The results presented clearly demonstrate that the inhibitory effect on bacterial growth observed in the presence of cranberry juice/extracts is primarily a result of the iron chelation capacity of PACs and direct disruption of metabolic enzymes. The results are discussed with a focus on the genes associated with iron chelation capability. Keywords: growth inhibition of cranberry juice For transcriptome profiling, there were 15 Affymetrix GeneChip® E. coli genome 2.0 arrays total. There were five conditions: E. coli grown in LB broth, E. coli grown in LB broth with 10% cranberry juice to generation 50, 160, 210, and 230. Each condition was done in triplicate. Five conditions done in triplicates resulted in 15 samples that went onto 15 microarrays.
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