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Transposon dynamics in the emerging oilseed crop Thlaspi arvense

ABSTRACT: Transposon dynamics in the emerging oilseed crop Thlaspi arvense

PROVIDER: PRJEB62093 | ENA |

REPOSITORIES: ENA

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Dataset's files

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			Action	DRS
	ERR12259238_1.fastq.gz	Fastqsanger.gz
	ERR12259238_2.fastq.gz	Fastqsanger.gz
	ERR12259239_1.fastq.gz	Fastqsanger.gz
	ERR12259239_2.fastq.gz	Fastqsanger.gz
	ERR12259240_1.fastq.gz	Fastqsanger.gz

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Transposon dynamics in the emerging oilseed crop Thlaspi arvense.

Project description:Genome evolution is partly driven by the mobility of transposable elements (TEs) which often leads to deleterious effects, but their activity can also facilitate genetic novelty and catalyze local adaptation. We explored how the intraspecific diversity of TE polymorphisms might contribute to the broad geographic success and adaptive capacity of the emerging oil crop Thlaspi arvense (field pennycress). We classified the TE inventory based on a high-quality genome assembly, estimated the age of retrotransposon TE families and comprehensively assessed their mobilization potential. A survey of 280 accessions from 12 regions across the Northern hemisphere allowed us to quantify over 90,000 TE insertion polymorphisms (TIPs). Their distribution mirrored the genetic differentiation as measured by single nucleotide polymorphisms (SNPs). The number and types of mobile TE families vary substantially across populations, but there are also shared patterns common to all accessions. Ty3/Athila elements are the main drivers of TE diversity in T. arvense populations, while a single Ty1/Alesia lineage might be particularly important for transcriptome divergence. The number of retrotransposon TIPs is associated with variation at genes related to epigenetic regulation, including an apparent knockout mutation in BROMODOMAIN AND ATPase DOMAIN-CONTAINING PROTEIN 1 (BRAT1), while DNA transposons are associated with variation at the HSP19 heat shock protein gene. We propose that the high rate of mobilization activity can be harnessed for targeted gene expression diversification, which may ultimately present a toolbox for the potential use of transposition in breeding and domestication of T. arvense.

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The pennycress (Thlaspi arvense) nectary transcriptome

Project description:Nectaries are the glands responsible for nectar secretion. To understand the genetic programming underlying nectar production, nectaries were collected from Thlaspi arvense cultivar MN108 at two developmental time points, with RNA being isolated and subjected to Illumina RNA-seq analysis.

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