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Paeonia suffruticosa

ABSTRACT: tree peony, native to China

PROVIDER: PRJNA162853 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10484891.fastq.gz	Fastqsanger.gz
	SRR10662632_1.fastq.gz	Fastqsanger.gz
	SRR10662632_2.fastq.gz	Fastqsanger.gz
	SRR10662633_1.fastq.gz	Fastqsanger.gz
	SRR10662633_2.fastq.gz	Fastqsanger.gz

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Fatty acid composition of developing tree peony (Paeonia section Moutan DC.) seeds and transcriptome analysis during seed development

Project description:Tree peony (Paeonia ostii section Moutan DC.) is known for its excellent ornamental and medicinal values. In 2011, seeds from P. ostii have been identified as novel resource of alpha-linolenic acid (ALA) for seed oil production and development in China. However, the molecular mechanism on biosynthesis of unsaturated fatty acids in tree peony seeds remains unknown. Therefore, transcriptome data is needed to better understand the underlying mechanisms. In this study, lipids accumulation contents were measured using GC-MS methods across developing tree peony seeds, which exhibited an extraordinary ALA content (49.3%) in P. ostii mature seeds. Transcriptome analysis was performed using Illumina sequencing platform. A total of 144 million 100-bp paired-end reads were generated from six libraries, which identified 175,874 contigs. In the KEGG Orthology enrichment of differentially expressed genes, lipid metabolism pathways were highly represented categories. Using this data we identified 388 unigenes that may be involved in de novo fatty acid and triacylglycerol biosynthesis. In particular, three unigenes (SAD, FAD2 and FAD8) encoding fatty acid desaturase with high expression levels in the fast oil accumulation stage compared with the initial stage of seed development were identified.

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