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Analysis of the coding and non-coding RNA temporal transcriptome of developing seeds in sunflower [ncRNA-seq]

ABSTRACT: miRNA-sequencing of seeds in three developmental stages was performed to reveals gene regulation in relation to oil and fatty acid accumulation in sunflower

ORGANISM(S): Helianthus annuus

PROVIDER: GSE151552 | GEO | 2020/06/02

REPOSITORIES: GEO

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Analysis of the coding and non-coding RNA temporal transcriptome of developing seeds in sunflower [RNA-seq]

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Project description:affy_tour_2012-02 - Identification of transcripts that are addressed to traduction in imbibed seeds in relation with dormancy: comparison of the translatome in Dormant versus Non-Dormant seeds -- At harvest seeds are dormant. They stay dormant if they are stored at -20°C (D) and become non-dormant (ND) if they are stored 2 months at +20°C. Polysomal fractions were purified on sucrose gradients from sunflower axis isolated from dormant and non-dormant seeds imbibed at 10°C during 3h, 15h or 24h. - These fractions allow to identify the transcripts addressed to translation (translatome) during the seed imbibition process (3, 15 and 24h) - The translatome of 2 types of seeds are compared: Dormant vs Non-Dormant at the 3 time points. 18 arrays - SUNFLOWER; time course,treated vs untreated comparison

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Project description:Arabidopsis seeds expressing the castor fatty acid hydroxylase accumulate hydroxylated fatty acids up to 17% of total fatty acids in seed triacylglycerols, however total seed oil is also reduced up to 50%. Investigations into the cause of the reduced oil phenotype through in vivo [14C]acteate and [3H]2O metabolic labeling of developing seeds surprisingly revealed that the rate of de novo fatty acid synthesis within the transgenic seeds was approximately half that of control seeds. Addition of castor phospholipid:diacylglycerol acyltransferase (PDAT) increased hydroxylated fatty acid content of the seed oil, increased the rate of fatty acid synthesis, and mostly restored seed oil levels. RNAseq analysis indicated no changes in expression of fatty acid synthesis genes in hydroxylase-expressing plants.

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Analysis of the coding and non-coding RNA temporal transcriptome of developing seeds in sunflower

Project description:This SuperSeries is composed of the SubSeries listed below.

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