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Duckweed

ABSTRACT: Genome sequencing of UK duckweed panel including Lemna minor, Lemna japonica, Lemna minuta, Lemna turionifera and Spirodela polyrhiza accessions.

PROVIDER: PRJNA1026139 | ENA |

REPOSITORIES: ENA

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Dataset's files

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			Action	DRS
	SRR26858614_1.fastq.gz	Fastqsanger.gz
	SRR26858614_2.fastq.gz	Fastqsanger.gz
	SRR26858615_1.fastq.gz	Fastqsanger.gz
	SRR26858615_2.fastq.gz	Fastqsanger.gz
	SRR26858616_1.fastq.gz	Fastqsanger.gz

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A Spirodela polyrhiza genome and proteome reveal conserved chromosomal structure and translation favoring energy production

Project description:Duckweeds are a monophyletic group of rapidly reproducing aquatic monocots in the Lemnaceae family. Spirodela polyrhiza, the Greater Duckweed, has the largest body plan yet the smallest genome size in the family (1C = 150 Mb). Given their clonal, exponentially fast reproduction, a key question is whether genome structure is conserved across the species in the absence of meiotic recombination. We generated a highly contiguous, chromosome-scale assembly of Spirodela polyrhiza line Sp7498 using Oxford Nanopore plus Hi-C scaffolding (Sp7498_HiC) that is highly syntenic with a related line (Sp9509). Both the Sp7498_HiC and Sp9509 genome assemblies reveal large chromosomal misorientations in a recent PacBio assembly of Sp7498, highlighting the necessity of orthogonal long-range scaffolding techniques like Hi-C and BioNano optical mapping. Proteome analysis of Sp7498 verified the expression of nearly 2,250 proteins and revealed a high level of proteins involved in photosynthesis and carbohydrate metabolism among other functions. In addition, a strong increase in chloroplast proteins was observed that correlated to chloroplast density. This Sp7498_HiC genome was generated cheaply and quickly with a single Oxford Nanopore MinION flow cell and one Hi-C library in a classroom setting. Combining these data with a mass spectrometry-generated proteome, demonstrates that duckweed is a model for genomics- and proteomics-based education.

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