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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03666naa a2200385 4500 | |
| 001 | oai:lup.lub.lu.se:ba3c3736-006b-4da0-82cd-ac260812cd84 | |
| 003 | SwePub | |
| 008 | 170316s2017 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://lup.lub.lu.se/record/ba3c3736-006b-4da0-82cd-ac260812cd842 URI |
| 024 | 7 | a https://doi.org/10.1128/JB.00465-162 DOI |
| 040 | a (SwePub)lu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Fuchino, Katsuyau Lund University,Lunds universitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science4 aut0 (Swepub:lu)cob-kfi |
| 245 | 1 0 | a Cell-biological studies of osmotic shock response in Streptomyces spp |
| 264 | 1 | c 2017 |
| 520 | a Most bacteria are likely to face osmotic challenges, but there is yet much to learn about how such environmental changes affect the architecture of bacterial cells. Here, we report a cell-biological study in model organisms of the genus Streptomyces, which are actinobacteria that grow in a highly polarized fashion to form branching hyphae. The characteristic apical growth of Streptomyces hyphae is orchestrated by protein assemblies, called polarisomes, which contain coiled-coil proteins DivIVA and Scy, and recruit cell wall synthesis complexes and the stressbearing cytoskeleton of FilP to the tip regions of the hyphae. We monitored cell growth and cell-architectural changes by time-lapse microscopy in osmotic upshift experiments. Hyperosmotic shock caused arrest of growth, loss of turgor, and hypercondensation of chromosomes. The recovery period was protracted, presumably due to the dehydrated state of the cytoplasm, before hyphae could restore their turgor and start to grow again. In most hyphae, this regrowth did not take place at the original hyphal tips. Instead, cell polarity was reprogrammed, and polarisomes were redistributed to new sites, leading to the emergence of multiple lateral branches from which growth occurred. Factors known to regulate the branching pattern of Streptomyces hyphae, such as the serine/threonine kinase AfsK and Scy, were not involved in reprogramming of cell polarity, indicating that different mechanisms may act under different environmental conditions to control hyphal branching. Our observations of hyphal morphology during the stress response indicate that turgor and sufficient hydration of cytoplasm are required for Streptomyces tip growth. | |
| 650 | 7 | a NATURVETENSKAPx Biologix Cellbiologi0 (SwePub)106042 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Biological Sciencesx Cell Biology0 (SwePub)106042 hsv//eng |
| 653 | a Apical growth | |
| 653 | a Bacterial cytoskeleton | |
| 653 | a Osmotic stress response | |
| 653 | a Streptomyces | |
| 653 | a Turgor | |
| 700 | 1 | a Flärdh, Klasu Lund University,Lunds universitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science4 aut0 (Swepub:lu)cob-kfl |
| 700 | 1 | a Dyson, Paulu Swansea University4 aut |
| 700 | 1 | a Ausmees, Norau Lund University,Lunds universitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science4 aut0 (Swepub:lu)cob-nra |
| 710 | 2 | a Biologiska institutionenb Naturvetenskapliga fakulteten4 org |
| 773 | 0 | t Journal of Bacteriologyg 199:1q 199:1x 0021-9193 |
| 856 | 4 | u https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5165099/x freey FULLTEXT |
| 856 | 4 | u http://dx.doi.org/10.1128/JB.00465-16y FULLTEXT |
| 856 | 4 8 | u https://lup.lub.lu.se/record/ba3c3736-006b-4da0-82cd-ac260812cd84 |
| 856 | 4 8 | u https://doi.org/10.1128/JB.00465-16 |
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- Fuchino, Katsuya
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