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Ploidy-specific transcriptomes shed light on the heterogeneous identity and metabolism of developing tomato pericarp cells

Endoreduplication, during which cells increase their DNA content through successive rounds of full genome replication without cell division, is the major source of endopolyploidy in higher plants. Endoreduplication plays pivotal roles in plant growth …

The BORDER family of negative transcription elongation factors regulates flowering time in Arabidopsis

- BDR proteins repress expression of the floral repressor, FLC - BDR proteins physically interact with the autonomous pathway protein FPA - BDR-repressed genes have high levels of Pol II occupancy, despite low mRNA levels - Gene repression by BDR may involve the inhibition of transcription elongation

Widespread premature transcription termination of Arabidopsis thaliana NLR genes by the spen protein FPA

Genes involved in disease resistance are some of the fastest evolving and most diverse components of genomes. Large numbers of nucleotide-binding, leucine-rich repeat (NLR) genes are found in plant genomes and are required for disease resistance. …

The 7SK/P-TEFb snRNP controls ultraviolet radiation-induced transcriptional reprogramming

- The 7SK snRNA is dispensable for cell proliferation under standard growth conditions - After UV exposure, 7SK/P-TEFb is needed for proper stress response and cell survival - P-TEFb extracted from 7SK/P-TEFb triggers UV-induced general RNAPII pause release - P-TEFb from 7SK/P-TEFb supports activation of important UV-responsive genes

Transcriptomic modifications of the thyroid gland upon exposure to phytosanitary-grade fipronil: Evidence for the activation of compensatory pathways

Fipronil is a phenylpyrazole insecticide used for the control of a variety of pest for domestic, veterinary and agricultural uses. Fipronil exposure is associated to thyroid disruption in the rat. It increases thyroid hormone (TH) hepatic clearance. …

BORDER proteins protect expression of neighboring genes by promoting 3' Pol II pausing in plants

Ensuring that one gene's transcription does not inappropriately affect the expression of its neighbors is a fundamental challenge to gene regulation in a genomic context. In plants, which lack homologs of animal insulator proteins, the mechanisms …

Co-occurrence of DON and Emerging Mycotoxins in Worldwide Finished Pig Feed and Their Combined Toxicity in Intestinal Cells

Food and feed can be naturally contaminated by several mycotoxins, and concern about the hazard of exposure to mycotoxin mixtures is increasing. In this study, more than 800 metabolites were analyzed in 524 finished pig feed samples collected …

NO synthesis from arginine is favored by alpha-linolenic acid in mice fed a high-fat diet

Alterations in NO availability and signaling play a pivotal role at early stages of the metabolic syndrome (MetSynd). We hypothesized that dietary alpha-linolenic acid (ALA, 18:3 n-3) favors NO availability by modulating amino acid metabolism, with a …

Dietary oleic acid regulates hepatic lipogenesis through a liver X receptor-dependent signaling

Olive oil consumption is beneficial for health as it is associated with a decreased prevalence of cancer and cardiovascular diseases. Oleic acid is, by far, the most abundant component of olive oil. Since it can be made through de novo synthesis in …

The Extent of mRNA Editing Is Limited in Chicken Liver and Adipose, but Impacted by Tissular Context, Genotype, Age, and Feeding as Exemplified with a Conserved Edited Site in COG3.

RNA editing is a posttranscriptional process leading to differences between genomic DNA and transcript sequences, potentially enhancing transcriptome diversity. With recent advances in high-throughput sequencing, many efforts have been made to …