Arabidopsis thaliana
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA371597 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:The CLAVATA3/ESR-RELATED (CLE) peptide hormones are required for numerous plant growth and developmental processes. However, little is known regarding the function and working mechanism of the CLEs in the anther. Here, using RNA in situ hybridization analyses, we identified 7 CLE genes that are specifically expressed in the tapetum and microsporocytes in the anther, and the dominant-negative mutant plants of each of these genes exhibited significantly reduced anther size, pollen number, and abnormal pollen wall formation. Further transcriptomic and proteomic studies on cle19, DN-CLE19, and CLE19-OX mutant lines revealed that CLE19 affected the expression of more than 1,000 genes at the RNA level and 595 at the protein level, including genes involved in pollen coat and pollen exine formation, lipid metabolism, pollen germination, and hormone metabolism processes. Phenotypic analyses of mutants of the CLE19 downstream genes GRP20, ACOS5 and MEE48 revealed that the formation of pollen exine was affected in these mutants, confirming that these genes function downstream of CLE19 in the regulation of pollen wall formation. These findings demonstrate the function and downstream genes of CLE19 and redundant genes, providing insights into working pathways of the peptide hormones in pollen development.
2017-09-15 | GSE94607 | GEO
Project description:Analysis of sol2 mutant. SOL2 protein is a receptor-like kinase; involved in CLE peptide signalling pathway. Results provide insignt into; the role of SOL2 in CLE signalling. Experiment Overall Design: GeneChip analyses were performed twice for comparison of gene expression in sol2 mutant and wild type plants.
2008-10-20 | E-GEOD-11119 | biostudies-arrayexpress
Project description:Analysis of sol2 mutant. SOL2 protein is a receptor-like kinase involved in CLE peptide signalling pathway. Results provide insignt into the role of SOL2 in CLE signalling. Keywords: gene expression array-based (RNA / in situ oligonucleotide)
2008-07-31 | GSE11119 | GEO
Project description:Differentiation processes in the primary root meristem are controlled by several signaling pathways that are regulated by phytohormones or by secreted peptides. Long term maintenance of an active root meristem requires that the generation of new root meristem cells and the loss of cells from the meristem due to differentiation is precisely coordinated. Via phenotypic and large scale transcriptome analyses of mutants, we show that the signalling peptide CLE40 and the receptor proteins CLV2 and CRN act in two genetically separable pathways that antagonistically regulate cell differentiation in the proximal root meristem. CLE40 inhibits cell differentiation throughout the primary root meristem by controlling genes with roles in abscisic acid, auxin and cytokinin signalling. CRN and CLV2 jointly control target genes that promote cell differentiation specifically in the transition zone of the proximal root meristem. While CRN and CLV2 are not acting in the CLE40 signaling pathway under normal growth conditions, both proteins are required when the levels of CLE40 or related CLE peptides increase. We show here that two antagonistically acting pathways controlling root meristem differentiation can be activated by the same peptide in a dosage dependent manner. 3 replicates reference(Col-0), clv2-gabi, cle40-2; 2 replicates crn-3
2014-10-02 | E-GEOD-59167 | biostudies-arrayexpress
Project description:Differentiation processes in the primary root meristem are controlled by several signaling pathways that are regulated by phytohormones or by secreted peptides. Long term maintenance of an active root meristem requires that the generation of new root meristem cells and the loss of cells from the meristem due to differentiation is precisely coordinated. Via phenotypic and large scale transcriptome analyses of mutants, we show that the signalling peptide CLE40 and the receptor proteins CLV2 and CRN act in two genetically separable pathways that antagonistically regulate cell differentiation in the proximal root meristem. CLE40 inhibits cell differentiation throughout the primary root meristem by controlling genes with roles in abscisic acid, auxin and cytokinin signalling. CRN and CLV2 jointly control target genes that promote cell differentiation specifically in the transition zone of the proximal root meristem. While CRN and CLV2 are not acting in the CLE40 signaling pathway under normal growth conditions, both proteins are required when the levels of CLE40 or related CLE peptides increase. We show here that two antagonistically acting pathways controlling root meristem differentiation can be activated by the same peptide in a dosage dependent manner.
2014-10-02 | GSE59167 | GEO
Project description:The SCOOP12 secreted peptide regulates root growth through the control of the O2.- / H2O2 balance and cell wall modification and has a pleiotropic effect on a bunch of hormones in Arabidopsis.
2021-09-23 | GSE184508 | GEO
Project description:Multigene families encoding diverse secreted peptide hormones play important roles in plant development. A need exists to efficiently elucidate the structures and post-translational-modifications of these difficult-to-isolate peptide hormones in planta so that their biological functions can be determined. A mass spectrometry and bioinformatics approach was developed to comprehensively analyse the secreted peptidome of Medicago hairy root cultures and xylem sap. We identified 759 spectra corresponding to the secreted products of twelve peptide hormones including four CEP (C-TERMINALLY ENCODED PEPTIDE), two CLE (CLV3/ENDOSPERM SURROUNDING REGION RELATED) and six XAP (XYLEM SAP ASSOCIATED PEPTIDE) peptides. The MtCEP1, MtCEP2, MtCEP5 and MtCEP8 peptides identified differed in post-translational-modifications. Most were hydroxylated at conserved proline residues but some MtCEP1 derivatives were tri-arabinosylated. In addition, many CEP peptides possessed unexpected N- and C-terminal extensions. The pattern of these extensions suggested roles for endo- and exoproteases in CEP peptide maturation. Longer -than -expected, hydroxylated and homogeneously modified mono- and tri-arabinosylated CEP peptides corresponding to their in vivo structures were chemically synthesised to probe the effect of these post-translational-modifications on function. The ability of CEP peptides to elevate root nodule number was increased by hydroxylation at key positions. MtCEP1 peptides with N-terminal extensions or with tri-arabinosylation modification, however, were unable to impart increased nodulation. The MtCLE5 and MtCLE17 peptides identified were of precise size, and inhibited main root growth and increased lateral root number. Six XAP peptides, each beginning with a conserved DY sulfation motif, were identified including MtXAP1a, MtXAP1b, MtXAP1c, MtXAP3, MtXAP5 and MtXAP7. MtXAP1a and MtXAP5 inhibited lateral root emergence. Transcriptional analyses demonstrated peptide hormone gene expression in the root vasculature and tip. Since hairy roots can be induced on many plants, their corresponding root cultures may represent ideal source materials to efficiently identify diverse peptide hormones in vivo in a broad range of species.
2017-10-31 | PXD007614 | Pride
Project description:Unified Feature Association Networks through Integration of Transcriptomic and Proteomic Data
| PRJNA557355 | ENA
Project description:Ticks (Acari: Ixodida) feed exclusively on blood which lacks essential nutrients such as vitamins and cofactors. These deficiencies are presumably complemented through specific symbiotic microorganisms such as Coxiella – Like Endosymbionts (CLEs) of Rhipicephalus ticks. CLE are localized in specialized host tissue cells within the Malpighian tubules (Mt) and the ovaries (Ov) from which they are maternally transmitted to developing oocytes. These two organs differ in function and cell types, and possibly also in activities performed by CLE occupants. To get insights into CLE functions within these two organs, we used comparative proteomics of CLEs in Mt and Ov of unfed R. sanguineus ticks
2022-02-17 | PXD026817 | Pride
Project description:The human hair follicle is not only regulated, but is a source of transcription factors, hormones, neurohormones etc. which are crucial in regulating its growth. We used microarrays to determine the early response of microdissected human hair follicles to an osteopontin-derived peptide.
2017-12-05 | GSE107663 | GEO