دورية أكاديمية
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Diurnal cycles drive rhythmic physiology and promote survival in facultative phototrophic bacteria.

التفاصيل البيبلوغرافية
العنوان: Diurnal cycles drive rhythmic physiology and promote survival in facultative phototrophic bacteria.
المؤلفون: Tinguely C; Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland., Paulméry M; Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland., Terrettaz C; Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland., Gonzalez D; Laboratory of Microbiology, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland. diego.gonzalez@unine.ch.
المصدر: ISME communications [ISME Commun] 2023 Nov 24; Vol. 3 (1), pp. 125. Date of Electronic Publication: 2023 Nov 24.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Oxford University Press Country of Publication: England NLM ID: 9918205372406676 Publication Model: Electronic Cited Medium: Internet ISSN: 2730-6151 (Electronic) Linking ISSN: 27306151 NLM ISO Abbreviation: ISME Commun Subsets: PubMed not MEDLINE
أسماء مطبوعة: Publication: 3 2024- : Oxford : Oxford University Press
Original Publication: [London] : Springer Nature on behalf of the International Society for Microbial Ecology, [2021]-
مستخلص: Bacteria have evolved many strategies to spare energy when nutrients become scarce. One widespread such strategy is facultative phototrophy, which helps heterotrophs supplement their energy supply using light. Our knowledge of the impact that such behaviors have on bacterial fitness and physiology is, however, still limited. Here, we study how a representative of the genus Porphyrobacter, in which aerobic anoxygenic phototrophy is ancestral, responds to different light regimes under nutrient limitation. We show that bacterial survival in stationary phase relies on functional reaction centers and varies depending on the light regime. Under dark-light alternance, our bacterial model presents a diphasic life history dependent on phototrophy: during dark phases, the cells inhibit DNA replication and part of the population lyses and releases nutrients, while subsequent light phases allow for the recovery and renewed growth of the surviving cells. We correlate these cyclic variations with a pervasive pattern of rhythmic transcription which reflects global changes in diurnal metabolic activity. Finally, we demonstrate that, compared to either a phototrophy mutant or a bacteriochlorophyll a overproducer, the wild type strain is better adapted to natural environments, where regular dark-light cycles are interspersed with additional accidental dark episodes. Overall, our results highlight the importance of light-induced biological rhythms in a new model of aerobic anoxygenic phototroph representative of an ecologically important group of environmental bacteria.
(© 2023. The Author(s).)
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معلومات مُعتمدة: PZ00P3_180142 Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (Swiss National Science Foundation)
تواريخ الأحداث: Date Created: 20231124 Latest Revision: 20231127
رمز التحديث: 20231127
مُعرف محوري في PubMed: PMC10674011
DOI: 10.1038/s43705-023-00334-5
PMID: 38001234
قاعدة البيانات: MEDLINE
الوصف
تدمد:2730-6151
DOI:10.1038/s43705-023-00334-5