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ABSTRACT: Differentially expression of genes, analysis and its biological importance in Black pepper (Piper nigrum)

PROVIDER: PRJNA739813 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14876425_1.fastq.gz	Fastqsanger.gz
	SRR14876425_2.fastq.gz	Fastqsanger.gz
	SRR14876426_1.fastq.gz	Fastqsanger.gz
	SRR14876426_2.fastq.gz	Fastqsanger.gz
	SRR14876427_1.fastq.gz	Fastqsanger.gz

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Black pepper proteome - Transcriptome- Assisted Label-Free Quantitative Proteomics Analysis Reveals Novel Insights into Piper nigrum-Phytophthora capsici Phytopathosystem

Project description:In this study, we have evaluated the proteomic changes that occur in Piper nigrum L.(black pepper) after infection by the pathogen Phytophthora capsici. We report novel leaf proteins from black pepper identified by an integrated transcriptome-assisted label-free quantitative proteomics pipeline. Several previously described methods were used to create this data set. Detached leaves were inoculated with either mock treatment, or the oomycete pathogen and small tissue samples only around the site of inoculation were collected for protein sample preparations. In order to quantify protein abundance in the samples being compared, we used a label free method of spiking samples with a known ratio of pre-digested peptide samples to normalize endogenous protein abundance in the MS detection. Our study attempts to explain the basal immune components of black pepper when challenged with P. capsici.

2016-07-07 | PXD003887 | Pride

Piperine Biosythesis in Black Pepper

Project description:The experiments were performed to elucidate the enigmatic enzymatic formation of the pungent principle, piperine, from black pepper (Piper nigrum L.), the world´s most popular spice. Based a differential RNA-Seq approach including immature fruits, flowers, and leaves, the gene encoding piperine synthase, encoding a BAHD-type acyltransferase and several other candidate genes encoding various enzymatic functions in the biosynthetic pathway were identified. Recombinant piperine synthase and additional promiscuous piperamide synthases were used to facilitate the microbial production of a broad range of medicinally relevant piperamides. Subsequent investigations will also include the identification of enzymatic steps in the phenylpropanoid pathway and the amino acid derived biosynthesis of piperidine Based on the assumption that piperine encoding genes are highly expressed shortly before the slope of piperine accumulation reaches its maximum, RNA from greenhouse grown black pepper plants was extracted from young fruits at two different stages of development, flowers, and leaves were harvested for a differential RNA-Seq approach. Candidate transcripts associated with piperine biosynthesis were identified by comparative transcript abundance and sequence annotation tools.

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Project description:The purpose of this experiment was to assess the effect of a synergistic combination of natural pyrethrin and an ethylacetate extract of Piper nigrum seeds (a botanical insecticide). This effect was compared to the effects of P. nigrum or pyrethrin used alone. Due to the synergistic nature of the mixture, it was predicted that gene expression profiles in this treatment would reflect this effect. Keywords: insecticide response, stress-response

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Project description:This study was designed to evaluate the proteome profiles of Piper nigrum when challenged with three different biotic stress. We have utilized a transcriptome-assisted protein identification pipeline coupled with a BLAST2GO annotation.

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