دورية أكاديمية
أعرض في EDS

Light Modulates the Physiology of Nonphototrophic Actinobacteria .

التفاصيل البيبلوغرافية
العنوان: Light Modulates the Physiology of Nonphototrophic Actinobacteria .
المؤلفون: Maresca JA; Department of Civil and Environmental Engineering, University of Delaware, Newark, Delaware, USA jmaresca@udel.edu., Keffer JL; Department of Civil and Environmental Engineering, University of Delaware, Newark, Delaware, USA., Hempel PP; Center for Bioinformatics and Computational Biology, University of Delaware, Newark, Delaware, USA., Polson SW; Center for Bioinformatics and Computational Biology, University of Delaware, Newark, Delaware, USA.; Delaware Biotechnology Institute, University of Delaware, Newark, Delaware, USA., Shevchenko O; Sequencing and Genotyping Center, University of Delaware, Newark, Delaware, USA.; Delaware Biotechnology Institute, University of Delaware, Newark, Delaware, USA., Bhavsar J; Center for Bioinformatics and Computational Biology, University of Delaware, Newark, Delaware, USA.; Delaware Biotechnology Institute, University of Delaware, Newark, Delaware, USA., Powell D; Delaware Biotechnology Institute, University of Delaware, Newark, Delaware, USA., Miller KJ; Department of Biology, University of Delaware, Newark, Delaware, USA., Singh A; Department of Biology, University of Delaware, Newark, Delaware, USA., Hahn MW; Research Department for Limnology, University of Innsbruck, Mondsee, Austria.
المصدر: Journal of bacteriology [J Bacteriol] 2019 Apr 24; Vol. 201 (10). Date of Electronic Publication: 2019 Apr 24 (Print Publication: 2019).
نوع المنشور: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: American Society for Microbiology Country of Publication: United States NLM ID: 2985120R Publication Model: Electronic-Print Cited Medium: Internet ISSN: 1098-5530 (Electronic) Linking ISSN: 00219193 NLM ISO Abbreviation: J Bacteriol Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Washington, DC : American Society for Microbiology
مواضيع طبية MeSH: Light*, Actinobacteria/*growth & development , Actinobacteria/*radiation effects , Carbohydrate Metabolism/*radiation effects , Gene Expression Regulation, Bacterial/*radiation effects, Actinobacteria/metabolism ; Bacterial Proteins/metabolism ; Cryptochromes/metabolism
مستخلص: Light is a source of energy and an environmental cue that is available in excess in most surface environments. In prokaryotic systems, conversion of light to energy by photoautotrophs and photoheterotrophs is well understood, but the conversion of light to information and the cellular response to that information have been characterized in only a few species. Our goal was to explore the response of freshwater Actinobacteria , which are ubiquitous in illuminated aquatic environments, to light. We found that Actinobacteria without functional photosystems grow faster in the light, likely because sugar transport and metabolism are upregulated in the light. Based on the action spectrum of the growth effect and comparisons of the genomes of three Actinobacteria with this growth rate phenotype, we propose that the photosensor in these strains is a putative CryB-type cryptochrome. The ability to sense light and upregulate carbohydrate transport during the day could allow these cells to coordinate their time of maximum organic carbon uptake with the time of maximum organic carbon release by primary producers. IMPORTANCE Sunlight provides information about both place and time. In sunlit aquatic environments, primary producers release organic carbon and nitrogen along with other growth factors during the day. The ability of Actinobacteria to coordinate organic carbon uptake and utilization with production of photosynthate enables them to grow more efficiently in the daytime, and it potentially gives them a competitive advantage over heterotrophs that constitutively produce carbohydrate transporters, which is energetically costly, or produce transporters only after detection of the substrate(s), which delays their response. Understanding how light cues the transport of organic carbon and its conversion to biomass is key to understanding biochemical mechanisms within the carbon cycle, the fluxes through it, and the variety of mechanisms by which light enhances growth.
(Copyright © 2019 American Society for Microbiology.)
التعليقات: Comment in: J Bacteriol. 2019 Apr 24;201(10):. (PMID: 30833351)
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معلومات مُعتمدة: P20 GM103446 United States GM NIGMS NIH HHS; P30 GM103519 United States GM NIGMS NIH HHS
فهرسة مساهمة: Keywords: Actinobacteria; cryptochrome; freshwater; heterotrophy; light
المشرفين على المادة: 0 (Bacterial Proteins)
0 (Cryptochromes)
تواريخ الأحداث: Date Created: 20190130 Date Completed: 20200212 Latest Revision: 20231104
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC6482932
DOI: 10.1128/JB.00740-18
PMID: 30692175
قاعدة البيانات: MEDLINE
الوصف
تدمد:1098-5530
DOI:10.1128/JB.00740-18