Cytosolic copper concentration modulates spore germination and secondary metabolism in Streptomyces coelicolor
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PROVIDER: PRJNA435982 | ENA |
REPOSITORIES: ENA
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Project description:We studied the influence of copper in physiological and morphological differentiation of Streptomyces coelicolor. We demonstrate differences in phenotype (germination, growth rate, antibiotic production) and genetic expression between a strain mutated at copper chaperone CopZ (SCO2730::Tn5062), the wild-type strain and a wild-type strain sporulated in a media with 80µM CuSO4. These differences are correlated with the cytosolic copper. Our results demonstrate a pleiotropic effect of copper modulating S. coelicolor development.
2018-12-31 | GSE111126 | GEO
Project description:The process of Saccharomyces cerevisiae spore germination includes breakage of dormancy, morphological changes and resumption of vegetative growth. We have determined the global transcriptional response during the first two hours of spore germination in response to rich growth medium and glucose alone, and identified possible transcription factors regulating the different transcriptional programs.
2012-12-18 | GSE29960 | GEO
Project description:The process of Saccharomyces cerevisiae spore germination includes breakage of dormancy, morphological changes and resumption of vegetative growth. We have determined the global transcriptional response during the first two hours of spore germination in response to rich growth medium and glucose alone, and identified possible transcription factors regulating the different transcriptional programs. Saccharomyces cerevisiae Y55 spores subjected to YPD and glucose 2%. Samples are taken in triplicates (except for glucose 0 min were duplicates were taken) in time course series after glucose and nutrient addition. Total of 18 samples. RNA from dormant spores was used as reference RNA for all microarrays.
2012-12-18 | E-GEOD-29960 | biostudies-arrayexpress
Project description:To study the signals and pathways underlying spore germination we examined the global changes in gene expression during this process. We find that the germination process can be divided into two distinct stages. During the first stage, the induced spores respond only to glucose. The transcription program during this stage recapitulates the general transcription response of yeast cells to glucose. Only during the second phase are the cells able to sense and respond to other nutritional components in the environment. Components of the mitotic machinery are involved in spore germination but in a distinct pattern. In contrast to the mitotic cell cycle, growth related events during germination are not coordinated with nuclear events and are separately regulated. Genome-wide expression profiling enables us to follow the progression of spore germination, thus dividing this process into two major stages and to identify germination-specific regulation of components of the mitotic cell cycle machinery. Keywords: Time course
2007-12-23 | GSE7362 | GEO
Project description:To study the signals and pathways underlying spore germination we examined the global changes in gene expression during this process. We find that the germination process can be divided into two distinct stages. During the first stage, the induced spores respond only to glucose. The transcription program during this stage recapitulates the general transcription response of yeast cells to glucose. Only during the second phase are the cells able to sense and respond to other nutritional components in the environment. Components of the mitotic machinery are involved in spore germination but in a distinct pattern. In contrast to the mitotic cell cycle, growth related events during germination are not coordinated with nuclear events and are separately regulated. Genome-wide expression profiling enables us to follow the progression of spore germination, thus dividing this process into two major stages and to identify germination-specific regulation of components of the mitotic cell cycle machinery. Keywords: Time course
2007-12-23 | GSE7358 | GEO
Project description:Bacillus subtilis forms dormant spores upon nutrient depletion. Under favorable environmental conditions, the spore breaks its dormancy and resumes growth in a process called spore germination and outgrowth. To elucidate the physiological processes that occur during the transition of the dormant spore to an actively growing vegetative cell, we studied this process in a time-dependent manner by a combination of microscopy, analysis of extracellular metabolites and a genome-wide analysis of transcription. The results indicate the presence of abundant levels of late sporulation transcripts in dormant spores. In addition, results suggest the existence of a complex and well-regulated spore outgrowth program, involving the temporal expression of at least 30 % of the B. subtilis genome. Keywords: time course, spore outgrowth
2007-03-27 | GSE6865 | GEO
Project description:Spermatophyte pollen tubes and root hairs have been used as single-cell-type model systems toward understanding the molecular processes underlying polar growth of plant cells. Horsetail (Equisetum arvense L.) is a perennial herb species in Equisetopsida, which creates separately growing spring and summer stems in its life cycle. The mature chlorophyllous spores produced from spring stems can germinate without dormancy. Here we report the cellular features and protein expression patterns in five stages of horsetail spore germination (mature spores, rehydrated spores, double-celled spores, germinated spores, and spores with protonemal cells). Using 2-DE combined with mass spectrometry, 80 proteins were found to be differentially expressed upon spore germination. Among them, proteins involved in photosynthesis, protein turnover, and energy supply were over-represented. Thirteen proteins appeared as isoforms on the gels, indicating the potential importance of post-translational modification. In addition, the dynamic changes of ascorbate peroxidase, peroxiredoxin, and dehydroascorbate reductase implied that reactive oxygen species homeostasis is critical in regulating cell division and tip-growth. The time course of germination and diverse expression patterns of proteins in photosynthesis, energy supply, lipid and amino acid metabolism indicated that heterotrophic and autotrophic metabolism were necessary in light-dependent germination of the spores. Twenty-six proteins were involved in protein synthesis, folding, and degradation, indicating that protein turnover is vital to spore germination and rhizoid tip-growth. Furthermore, the altered abundance of small G protein Ran1, 14-3-3 protein, actin, and Caffeoyl-CoA O-methyltransferase revealed that signaling transduction, vesicle trafficking, cytoskeleton dynamics, and cell wall modulation were critical to cell division and polar growth. These findings provide up-to-date evidences for understanding fern spore asymmetric division and rhizoid polar growth.
2016-12-23 | PXD002218 | Pride
Project description:Arginine phosphorylation, an emerging protein modification, has been lately described to occur in B. subtilis and Staphylococcus aureus. The kinase responsible for arginine phosphorylation in B. subtilis was shown to be McsB, which counteracts the protein arginine phosphatase YwlE. Here we demonstrate that YwlE drives the progression of spore germination by dephosphorylating arginine phospho-sites of target proteins involved in key cellular processes.
2022-03-02 | PXD011082 | Pride
Project description:To gain insight into spore germination and outgrowth, the transcriptome changes during Bacillus subtilis spore conversion to vegetative cells were analyzed. The transcriptome analysis also allowed us to trace the different functional groups of genes expressed during this conversion. . Our analysis identified 34 abundant mRNA transcripts in the dormant spores, at least 31 of which were rapidly degraded after the phase transition and observed 3152 differentially expressed genes during spore germination and outgrowth.
2020-03-04 | GSE146277 | GEO
Project description:Sorbic acid (SA) is widely used as a preservative, but the effect of SA on spore germination and outgrowth has gained limited attention up to now. Therefore, the effect of sorbic acid on germination of spores of B. cereus strain ATCC 14579 was analyzed both at phenotype and transcriptome level. Spore germination and outgrowth was assessed at pH 5.5 without and with 0.75, 1.5 and 3.0mM (final concentrations) undissociated sorbic acid (HSA). This resulted in distinct HSA concentration-dependent phenotypes, varying from delays in germination and outgrowth to complete blockage of germination at 3.0mM HSA. The phenotypes reflecting different stages in the germination process could be confirmed using flow cytometry and could be recognized at transcriptome level by distinct expression profiles. In the absence and presence of 0.75 and 1.5mM HSA, similar cellular ATP levels were found up to the initial stage of outgrowth, suggesting that HSA-induced inhibition of outgrowth is not caused by depletion of ATP. Transcriptome analysis revealed the presence of a limited number of transcripts in dormant spores, outgrowth related expression, and genes specifically associated with sorbic acid stress, including alterations in cell envelope and multi-drug resistance. The potential role of these HSA-stress associated genes in spore outgrowth is discussed.
2010-11-01 | GSE19186 | GEO