Fungal oxylipins direct programmed developmental switches in filamentous fungi
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ABSTRACT:
PROVIDER: PRJNA658306 | ENA |
REPOSITORIES: ENA
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Project description:Oxygenated unsaturated fatty acids, known as oxylipins, are signaling molecules commonly used for cell-to-cell communication in eukaryotes. However, a role for oxylipins in mediating communication in prokaryotes has not previously been described. Bacteria mainly communicate via quorum sensing (QS) , which involves the production and detection of diverse small molecules termed autoinducers. We showed that oleic acid-derived oxylipins 10-HOME and 7,10-DiHOME produced by Pseudomonas aeruginosa function as autoinducers of a novel quorum sensing system termed Oxylipin-Dependent QS Sytem (ODS). This experiment was designed to determine the genes whose expression is altered by these P. aeruginosa oxylipins. We found that the ODS system controls the cell density-dependent expression of a P. aeruginosa gene subset through the mediation of 10-HOME and 7,10-DiHOME oxylipins.
2018-12-05 | GSE123356 | GEO
Project description:The rapid transport of ribosomal proteins (RPs) into the nucleus and their efficient assembly into rRNA are prerequisites for ribosome biogenesis. Proteins that act as dedicated chaperones for RPs to maintain their stability and facilitate their assembly have not been identified in filamentous fungi. PlCYP5 is a nuclear cyclophilin in the nematophagous fungus Purpureocillium lilacinum, and up-regulated expression in response to abiotic stress and nematode egg-parasitism. Here, we found that PlCYP5 interacted with the unassembled small ribosomal subunit protein, PlRPS15, of the uS19 family. PlRPS15 contained a eukaryote-specific N-terminal extension that mediated the interaction. The phenotypes of the PlCYP5 loss-of-function mutant were similar to those of the PlRPS15 knockdown mutant (e.g., growth and ribosome biogenesis defects). PlCYP5 maintained the solubility of PlRPS15 independent of its catalytic peptide-prolyl isomerase function and supported the integration of PlRPS15 into pre-ribosomes. PlCYP5 homologs in Arabidopsis thaliana, Homo sapiens, Schizosaccharomyces pombe, Sclerotinia sclerotiorum, Botytis cinerea, and Metarhizium anisopliae were identified. Notably, the interaction of their homologs corresponding to the PlCYP5-PlRPS15 pattern existed in three filamentous fungi, while lacked in other species. In summary, our data disclosed a special RP dedicated chaperone system in filamentous fungi, in which cyclophilin was enlisted to perform the chaperone funtion.
2021-07-10 | GSE179712 | GEO
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2015-10-26 | PXD001897 | Pride
Project description:Wild-type diploid cells were shifted from yeast-form growth in SHAD liquid (plentiful glucose and ammonium) to filamentous-form growth on SLAD agar (low ammonium). Samples of filamentous-form cells were collected hourly for 10 hours. Filamentous-form and yeast-form exponential-phase targets were co-hybridized. Keywords: time-course
2004-02-02 | GSE679 | GEO
Project description:Oxylipins play a role in the response of plants to pathogens both as antimicrobial compounds and as signaling molecules. In potato, pathogen infection leads to the stimulation of the 9-lipoxygenase pathway (Göbel et al. 2001; 2002; Stumpe et al. 2001). In order to analyze whether 9-LOX-derived oxylipins such as colnele(n)ic acid (products of the 9-divinyl ether synthase reaction) act as signaling molecules for the activation of defense responses, transgenic potato plants (Solanum tuberosum cv. Désirée) were generated which express an RNAi construct directed against the pathogen-induced 9-lipoxygenase (Göbel et al. 2003) or against the pathogen-induced 9-divinyl ether synthase (Stumpe et al. 2001). Highly reduced transcript levels correlate with low levels of 9-lipoxygenase-derived oxylipins (Göbel et al. 2003). Transgenic and wild type plants were grown as sterile plants on MS medium supplemented with agar in a phytochamber with 16 h of light [200 µE] at 22 °C. After transfer to soil, plants were kept in a phytochamber with 16 h of light [200 µE], 18 °C and 60 % humidity for four weeks. Lower leaves were infiltrated with a suspension of Pseudomonas syringae pv. maculicola at a concentration of 108 cfu/ml MgCl2 or, as a control, 10 mM MgCl2-solution. RNA was isolated both from the infiltrated leaves and the upper, non-treated leaves using the trizol method. Subsequently, RNA was digested with DNase and purified via Qiagen RNeasy Kit (Qiagen, Hilden, Germany) according to the manufacturer´s instructions. Keywords: Direct comparison
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