The Arabidopsis cytochrome P450 KLUH (KLU)/CYP78A5 promotes organ growth in a non-cell autonomous manner. To identify genes regulated by KLU activity, homozygous klu-2 mutants carrying constructs for EtOH-inducible overexpression of wild-type KLU (35S::AlcR-AlcA::KLU) or of enzymatically inactive KLU protein (35S::AlcR-AlcA::KLUmut) were induced with EtOH and sampled at 90 min and 240 min after induction for gene expression changes.
Control of plant organ size by KLUH/CYP78A5-dependent intercellular signaling.
No sample metadata fields
View SamplesMitogen-activated dual-specificity MAPK phosphatases are important negative regulators in the MAPK signalling pathways responsible for many essential processes in plants. In a screen for mutants with reduced organ size we have identified a mutation in the active site of the dual-specificity MAPK phosphatase INDOLE-3-BUTYRIC ACID-RESPONSE5 (IBR5) that we named tinkerbell (tink) due to its small size. Analysis of the tink mutant indicates that IBR5 acts as a novel regulator of organ size that changes the rate of growth in petals and leaves. Organ size and shape regulation by IBR5 acts independently of the KLU growth-regulatory pathway. Microarray analysis of tink/ibr5-6 mutants identified a likely role for this phosphatase in male gametophyte development. We show that IBR5 may influence the size and shape of petals through auxin and TCP growth regulatory pathways.
The Tinkerbell (Tink) Mutation Identifies the Dual-Specificity MAPK Phosphatase INDOLE-3-BUTYRIC ACID-RESPONSE5 (IBR5) as a Novel Regulator of Organ Size in Arabidopsis.
Specimen part
View SamplesExpression profiling of resting B cells to classify active and silent genes based on expression levels Overall design: 4 biological replicates of mRNA extracted from freshly purified mouse CD43 negative resting B cells
The aurora B kinase and the polycomb protein ring1B combine to regulate active promoters in quiescent lymphocytes.
Specimen part, Cell line, Subject
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Genome-wide analysis shows that Ldb1 controls essential hematopoietic genes/pathways in mouse early development and reveals novel players in hematopoiesis.
Specimen part
View SamplesThe first site exhibiting hematopoietic activity in mammalian development is the yolk sac blood island, which originates from the hemangioblast. Here we performed differentiation assays, as well as genome-wide molecular and functional studies in BL-CFCs to gain insight into the function of the essential Ldb1 factor in early primitive hematopoietic development. We show that the previously reported lack of yolk sac hematopoiesis and vascular development in Ldb1-/- mouse result from a decreased number of hemangioblasts and a block in their ability to differentiate into erythroid and endothelial progenitor cells. Transcriptome analysis and correlation with the genome wide binding pattern of Ldb1 in hemangioblasts revealed a number of direct target genes and pathways misregulated in the absence of Ldb1. The regulation of essential developmental factors by Ldb1 defines it as an upstream transcriptional regulator of hematopoietic/endothelial development. We show the complex interplay that exists between transcription factors and signaling pathways during the very early stages of hematopoietic/endothelial development and the specific signalling occurring in hemangioblasts in contrast to more advanced hematopoietic developmental stages. Finally, by revealing novel genes and pathways, not previously associated with early development, our study provides novel candidate targets to manipulate the differentiation of hematopoietic and/or endothelial cells.
Genome-wide analysis shows that Ldb1 controls essential hematopoietic genes/pathways in mouse early development and reveals novel players in hematopoiesis.
Specimen part
View SamplesSequencing libraries were generated from total RNA samples following the mRNAseq protocol for the generation of single end (16-36 hpf, 5 day larvae, adult head and adult tail) or paired end (24 hpf) libraries (Illumina). Single end reads of 36 nucleotides and paired end reads (2 x 76 nucleotides) were obtained with a GAIIx (Illumina). Gene expression at the different stages/tissu was assessed by cufflinks and HTseq. Overall design: RNAseq on 5 differents samples: 24hpf embryos, pool of 16 hour to 36 hour embryos, 5 days old larvea, adult head and adult tail
Genome-wide, whole mount in situ analysis of transcriptional regulators in zebrafish embryos.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
The male germ cell gene regulator CTCFL is functionally different from CTCF and binds CTCF-like consensus sites in a nucleosome composition-dependent manner.
Specimen part
View SamplesThe effect of CTCFL mutation on the transcriptional program in testes
The male germ cell gene regulator CTCFL is functionally different from CTCF and binds CTCF-like consensus sites in a nucleosome composition-dependent manner.
Specimen part
View SamplesCTCFL binding to DNA and the effect of CTCFL expression in ES cells
The male germ cell gene regulator CTCFL is functionally different from CTCF and binds CTCF-like consensus sites in a nucleosome composition-dependent manner.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Conservation and divergence in Toll-like receptor 4-regulated gene expression in primary human versus mouse macrophages.
Sex, Specimen part, Treatment
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