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Trans-generational adaptation to maternal climate through hormone transport in plants [scRNA-seq]

ABSTRACT: Trans-generational adaptation to maternal climate through hormone transport in plants [scRNA-seq]

PROVIDER: PRJNA1180071 | ENA |

REPOSITORIES: ENA

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Trans-generational adaptation to maternal climate through hormone transport in plants [bulk RNA-seq]

Project description:Trans-generational adaptation to maternal climate through hormone transport in plants [bulk RNA-seq]

| PRJNA1168996 | ENA

Trans-generational adaptation to maternal climate through hormone transport in plants [scRNA-seq]

Project description:Whether and how organisms can inherit environmental information from their parents is a major question in evolutionary theory. Plants have evolved to link reproductive development to seasonal environmental cues and seed dormancy is highly contingent on the environmental temperature during seed set, although the mechanism by which seeds acquire seasonal timing information is unclear. Here we show that loss of maternal like heterochromatin protein 1 (LHP1) causes an inability of progeny seeds to sense temperature and that this is linked mechanistically to reduced ABA levels in seeds and hyperaccumulation of free nitrate. Remarkably, single cell transcriptomics reveals that in both maternal fruit and seed tissues, the effect of small changes in temperature closely phenocopies the lhp1 mutant phenotype and ABA biosensor imaging reveal large fluxes of maternal ABA into seeds is modulated by temperature cues. We show that temperature activates ABA production in leaves and that maternal ABA is necessary and sufficient for progeny seeds to acquire seed dormancy. Thus, we reveal that the climate experience of mother plants causes adaptation of progeny behaviour via hormone transport during seed set.

2024-11-07 | GSE280705 | GEO

Trans-generational adaptation to maternal climate through hormone transport in plants [bulk RNA-seq]

2024-10-11 | GSE278833 | GEO

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A trans-generational epigenetic process defines piRNA biogenesis in Drosophila virilis

Project description:Piwi interacting (pi)RNAs repress diverse transposable elements in the germ cells of metazoans and are essential for fertility in both invertebrates and vertebrates. The precursors of piRNAs are transcribed from distinct genomic regions, the so-called piRNA clusters; however, how piRNA clusters are differentiated from the rest of the genome is not known. To address this question, we studied piRNA biogenesis in two Drosophila virilis strains that show differential ability to generate piRNAs from several genomic regions. We found that active piRNA biogenesis correlates with high levels of histone 3 lysine 9 trimethylation (H3K9me3) over genomic regions that give rise to piRNAs. Furthermore, piRNA biogenesis in the progeny requires the trans-generational inheritance of an epigenetic signal, presumably in form of homologous piRNAs that are generated in the maternal germline and deposited into the oocyte. The inherited piRNAs enhance piRNA biogenesis by installment of H3K9me3 mark on piRNA clusters and by promoting ping-pong processing of homologous transcripts into mature piRNAs. We submitted the resequencing data together with the functional genomic datasets because it was generated with the sole purpose of supporting those. The SRA accession numbers are SRR1536176 and SRR1536175. ChIP-seq against H3K9me3 and Pol2, Total RNA-seq, in Drosophila virilis Strain9 and Strain160 as well as crosses between them

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Inter- and trans-generational impact of H3K4 methylation in neuronal homeostasis (ChiP-Seq)

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A trans-generational epigenetic process defines piRNA biogenesis in Drosophila virilis

2014-09-01 | GSE59965 | GEO