We demonstrate that PKA signalling drives zonal conversion within adult adrenocortical lineage in a sexually dimorphic manner. Our data establish that Prkar1a genetic ablation (leading to constitutive PKA activation) in the adult adrenocortical lineage leads to endocrine hyperactivity and accelerates adrenal cortex renewal. This results in increased zona fasciculata differentiation and final conversion into reticularis-like zone. This phenomenon relies partly on sex-dependent mechanisms of cortical renewal, on which the male androgenic milieu exerts a repressive action through induction of WNT signalling, which in turn antagonizes PKA signalling and cortical cell turnover.
PKA signaling drives reticularis differentiation and sexually dimorphic adrenal cortex renewal.
Sex, Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Cell identity mediates the response of Arabidopsis roots to abiotic stress.
No sample metadata fields
View SamplesCell-type specific transcriptional profiles were generated by FACS (Fluorescence Activated Cell Sorting) sorting of roots that express cell-type specific GFP-reporters. Six different GFP-reporter lines were utilized allowing us to obtain transcriptional profiles for cells in all radial zones of the root. FACS cell populations were isolated from roots grown under standard conditions or roots that had been transfered to media supplemented with 140 mM NaCl for 1 hour.
Cell identity mediates the response of Arabidopsis roots to abiotic stress.
No sample metadata fields
View SamplesTo gain a genome-scale understanding of the role that developmental processes play in regulating stimulus response, we examined the effect of salt stress on gene expression along the longitudinal axis of the root. Since roots grow from stem cells located near the tip, the position of cells along the longitudinal axis can be used as a proxy for developmental time, with distance from the root tip correlating with increased differentiation. To estimate the role developmental stage plays in regulating salt response, roots were dissected into four longitudinal zones (LZ data set) after transfer to standard or salt media and transcriptionally profiled.
Cell identity mediates the response of Arabidopsis roots to abiotic stress.
No sample metadata fields
View SamplesWe performed an expression analysis of the response of seedling root tips to 1 hour of treatment with 140mM NaCl using mutants defective in root hair patterning.
Cell identity mediates the response of Arabidopsis roots to abiotic stress.
No sample metadata fields
View SamplesCell-type specific transcriptional profiles were generated by FACS (Fluorescence Activated Cell Sorting) sorting of roots that express cell-type specific GFP-reporters. Five different GFP-reporter lines were utilized allowing us to obtain transcriptional profiles for cells in all radial zones of the root. FACS cell populations were isolated from roots grown under standard conditions or roots that had been transfered to -Fe media for 24 hours.
Cell identity mediates the response of Arabidopsis roots to abiotic stress.
No sample metadata fields
View SamplesTo gain a genome-scale understanding of the role that developmental processes play in regulating stimulus response, we examined the effect of -Fe stress on gene expression along the longitudinal axis of the root. Since roots grow from stem cells located near the tip, the position of cells along the longitudinal axis can be used as a proxy for developmental time, with distance from the root tip correlating with increased differentiation. To estimate the role developmental stage plays in regulating salt response, roots were dissected into four longitudinal zones (LZ data set) after transfer to standard or -Fe media and transcriptionally profiled.
Cell identity mediates the response of Arabidopsis roots to abiotic stress.
No sample metadata fields
View SamplesWe performed a time course analysis (TC data set) of the response of whole seedling roots to -Fe at 6 time points after transfer (3, 6, 12, 24, 48, and 72 hours).
Cell identity mediates the response of Arabidopsis roots to abiotic stress.
No sample metadata fields
View SamplesWe performed a time course analysis (TC data set) of the response of whole seedling roots to 140mM NaCl at 5 time points after transfer (30 minutes, 1, 4, 16 and 32 hours).
Cell identity mediates the response of Arabidopsis roots to abiotic stress.
No sample metadata fields
View SamplesIn order to estimate the effects of protoplasting and FACS sorting procedures on -Fe regulated gene expression we generated expression profiles for whole roots that had been treated with -Fe for 24 hours and for roots that were protoplasted and FACS sorted after the initial 24 hour -Fe treatment.
Cell identity mediates the response of Arabidopsis roots to abiotic stress.
No sample metadata fields
View Samples