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Rumen Diurnal Dynamics

ABSTRACT: Diurnal dynamics of gaseous and dissolved metabolites and microbiota composition in the bovine rumen

PROVIDER: PRJEB17837 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR1725850_1.fastq.gz	Fastqsanger.gz
	ERR1725850_2.fastq.gz	Fastqsanger.gz
	ERR1725851_1.fastq.gz	Fastqsanger.gz
	ERR1725851_2.fastq.gz	Fastqsanger.gz
	ERR1725852_1.fastq.gz	Fastqsanger.gz

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Rumen Diurnal Dynamics

Project description:Diurnal dynamics of gaseous and dissolved metabolites and microbiota composition in the bovine rumen

| PRJEB17837 | ENA

The mechanism of promoting proliferation of rumen epithelial cells in Tan sheep by adding succinate to the diet based on the interaction between rumen microbiota and host.

Project description:A healthy rumen is crucial for normal growth and improved production performance of ruminant animals. Rumen microbes participate in and regulate rumen epithelial function, and the diverse metabolites produced by rumen microbes are important participants in rumen microbe-host interactions. SCFAs, as metabolites of rumen microbes, have been widely studied, and propionate and butyrate have been proven to promote rumen epithelial cell proliferation. Succinate, as an intermediate metabolite in the citric acid cycle, is a final product in the metabolism of certain rumen microbes, and is also an intermediate product in the microbial synthesis pathway of propionate. However, its effect on rumen microbes and rumen epithelial function has not been studied. It is unclear whether succinate can stimulate rumen epithelial development. Therefore, in this experiment, Chinese Tan sheep were used as experimental animals to conduct a comprehensive analysis of the rumen microbiota community structure and rumen epithelial transcriptome, to explore the role of adding succinate to the diet in the interaction between the rumen microbiota and host.

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Diurnal transcriptome dynamics of Japanese cedar in summer and winter

Project description:Investigation of transcriptome dynamics of Japanese cedar (Cryptomeria japonica) in winter (Dec. 22-23, 2011) and summer (July 30-31, 2012). We investigated seasonal and diurnal transcriptome dynamics of Japanese cedar (Cryptomeria japonica) by analyzing shoot samples collected at four-hour interval for two days in winter and summer, respectively. We first collected sequence data of expressed genes from shoots to designed microarray probes. Microarray analysis revealed the significant difference of transcripts between summer and winter, and the diurnal transcriptome dynamic in summer.Statistical analysis indicated that about 7.7 % of unique genes showed diurnal rhythms with more than two-fold of peak-to-trough amplitude in summer.

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Project description:In this study, we studied the fibrolytic potential of the rumen microbiota in the rumen of 6 lambs separated from their dams from 12h of age and artificially fed with milk replacer (MR) and starter feed from d8, in absence (3 lambs) or presence (3 lambs) of a combination of the live yeast Saccharomyces cerevisiae CNCM I-1077 and selected yeast metabolites. The fibrolytic potential of the rumen microbiota of the lambs at 56 days of age was analyzed with a DNA microarray (FibroChip) targeting genes coding for 8 glycoside hydrolase (GH) families.

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Project description:Metaproteomic studies of the rumen microbiota are challenged by the need of optimized sample preparation protocols in order to retrieve an enhanced amount of prokaryotic instead of plant and bovine derived cells before protein extraction and subsequent LC-MS/MS analysis. The present study evaluates three different protocols applied to the rumen microbiota either attached to plant fibres or present as planktonic cells. The findings of our work suggest the integration of cheesecloth-gauze filtration in sample preparation to achieve a better protein identification ratio.

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