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Cano-Ramirez DL, Panter PE, Takemura T, de Fraine TS, de Barros Dantas LL, Dekeya R, Barros-Galvão T, Paajanen P, Bellandi A, Batstone T, Manley BF, Tanaka K, Imamura S, Franklin KA, Knight H, Dodd AN. Low-temperature and circadian signals are integrated by the sigma factor SIG5. Nat Plants 2023; 9:661-672. [PMID: 36997687 PMCID: PMC10119024 DOI: 10.1038/s41477-023-01377-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 02/20/2023] [Indexed: 06/19/2023]
Abstract
Chloroplasts are a common feature of plant cells and aspects of their metabolism, including photosynthesis, are influenced by low-temperature conditions. Chloroplasts contain a small circular genome that encodes essential components of the photosynthetic apparatus and chloroplast transcription/translation machinery. Here, we show that in Arabidopsis, a nuclear-encoded sigma factor that controls chloroplast transcription (SIGMA FACTOR5) contributes to adaptation to low-temperature conditions. This process involves the regulation of SIGMA FACTOR5 expression in response to cold by the bZIP transcription factors ELONGATED HYPOCOTYL5 and ELONGATED HYPOCOTYL5 HOMOLOG. The response of this pathway to cold is gated by the circadian clock, and it enhances photosynthetic efficiency during long-term cold and freezing exposure. We identify a process that integrates low-temperature and circadian signals, and modulates the response of chloroplasts to low-temperature conditions.
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Affiliation(s)
- Dora L Cano-Ramirez
- The Sainsbury Laboratory, University of Cambridge, Cambridge, UK
- School of Biological Sciences, University of Bristol, Bristol, UK
| | | | - Tokiaki Takemura
- Laboratory for Chemistry and Life Science, Institute for Innovative Research, Tokyo Institute of Technology, Yokohama, Japan
| | | | | | | | | | | | - Annalisa Bellandi
- John Innes Centre, Norwich, UK
- Laboratoire de Reproduction et Développement des Plantes, ENS de Lyon, Université de Lyon, UCBL, INRAE, CNRS, Lyon, France
| | - Tom Batstone
- School of Biological Sciences, University of Bristol, Bristol, UK
| | - Bethan F Manley
- School of Biological Sciences, University of Bristol, Bristol, UK
- Wellcome Trust Sanger Institute, Hinxton, UK
| | - Kan Tanaka
- Laboratory for Chemistry and Life Science, Institute for Innovative Research, Tokyo Institute of Technology, Yokohama, Japan
| | - Sousuke Imamura
- Laboratory for Chemistry and Life Science, Institute for Innovative Research, Tokyo Institute of Technology, Yokohama, Japan
- Space Environment and Energy Laboratories, Nippon Telegraph and Telephone Corporation, Musashino-shi, Japan
| | - Keara A Franklin
- School of Biological Sciences, University of Bristol, Bristol, UK
| | - Heather Knight
- Department of Biosciences, Durham University, Durham, UK
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Cano-Ramirez DL, Saskia de Fraine T, Griffiths OG, Dodd AN. Photosynthesis and circadian rhythms regulate the buoyancy of marimo lake balls. Curr Biol 2019; 28:R869-R870. [PMID: 30130504 DOI: 10.1016/j.cub.2018.07.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Marimo are unusual, attractive and endangered spherical aggregations of the filamentous green macroalga Aegagropila linnaei (Figure 1A-E) [1]. Globally rare, marimo populations persist in cold freshwater lakes in Japan, Iceland and Ukraine. Marimo occupy both the lake bed and rise to the lake surface [2,3]. Here, we show that marimo buoyancy is conferred by bubbles arising from photosynthesis. We find that light-induced acquisition of buoyancy by marimo is circadian-regulated. We identify that there are circadian rhythms of photosynthesis in marimo, which might explain the circadian rhythm of buoyancy in response to light. This identifies a circadian-regulated buoyancy response in an intriguing and little-studied plant.
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Affiliation(s)
- Dora L Cano-Ramirez
- School of Biological Sciences, Life Sciences Building, University of Bristol, Bristol BS8 1TQ, UK
| | - Tara Saskia de Fraine
- School of Biological Sciences, Life Sciences Building, University of Bristol, Bristol BS8 1TQ, UK
| | - Olivia G Griffiths
- School of Biological Sciences, Life Sciences Building, University of Bristol, Bristol BS8 1TQ, UK
| | - Antony N Dodd
- School of Biological Sciences, Life Sciences Building, University of Bristol, Bristol BS8 1TQ, UK.
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Cano-Ramirez DL, Dodd AN. New connections between circadian rhythms, photosynthesis, and environmental adaptation. Plant Cell Environ 2018; 41:2515-2517. [PMID: 29785736 DOI: 10.1111/pce.13346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 05/16/2018] [Accepted: 05/16/2018] [Indexed: 06/08/2023]
Abstract
This article comments on: Circadian rhythms are associated with variation in photosystem II function and photoprotective mechanisms.
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Affiliation(s)
- Dora L Cano-Ramirez
- School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK
| | - Antony N Dodd
- School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK
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Frank A, Matiolli CC, Viana AJC, Hearn TJ, Kusakina J, Belbin FE, Wells Newman D, Yochikawa A, Cano-Ramirez DL, Chembath A, Cragg-Barber K, Haydon MJ, Hotta CT, Vincentz M, Webb AAR, Dodd AN. Circadian Entrainment in Arabidopsis by the Sugar-Responsive Transcription Factor bZIP63. Curr Biol 2018; 28:2597-2606.e6. [PMID: 30078562 PMCID: PMC6108399 DOI: 10.1016/j.cub.2018.05.092] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 03/28/2018] [Accepted: 05/31/2018] [Indexed: 02/08/2023]
Abstract
Synchronization of circadian clocks to the day-night cycle ensures the correct timing of biological events. This entrainment process is essential to ensure that the phase of the circadian oscillator is synchronized with daily events within the environment [1], to permit accurate anticipation of environmental changes [2, 3]. Entrainment in plants requires phase changes in the circadian oscillator, through unidentified pathways, which alter circadian oscillator gene expression in response to light, temperature, and sugars [4, 5, 6]. To determine how circadian clocks respond to metabolic rhythms, we investigated the mechanisms by which sugars adjust the circadian phase in Arabidopsis [5]. We focused upon metabolic regulation because interactions occur between circadian oscillators and metabolism in several experimental systems [5, 7, 8, 9], but the molecular mechanisms are unidentified. Here, we demonstrate that the transcription factor BASIC LEUCINE ZIPPER63 (bZIP63) regulates the circadian oscillator gene PSEUDO RESPONSE REGULATOR7 (PRR7) to change the circadian phase in response to sugars. We find that SnRK1, a sugar-sensing kinase that regulates bZIP63 activity and circadian period [10, 11, 12, 13, 14] is required for sucrose-induced changes in circadian phase. Furthermore, TREHALOSE-6-PHOSPHATE SYNTHASE1 (TPS1), which synthesizes the signaling sugar trehalose-6-phosphate, is required for circadian phase adjustment in response to sucrose. We demonstrate that daily rhythms of energy availability can entrain the circadian oscillator through the function of bZIP63, TPS1, and the KIN10 subunit of the SnRK1 energy sensor. This identifies a molecular mechanism that adjusts the circadian phase in response to sugars. The transcription factor bZIP63 binds and regulates the circadian clock gene PRR7 bZIP63 is required for adjustment of circadian period by sugars Trehalose-6-phosphate metabolism and KIN10 signaling regulate circadian period Sugar signals establish the correct circadian phase in light and dark cycles
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Affiliation(s)
- Alexander Frank
- Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, UK
| | - Cleverson C Matiolli
- Centro de Biologia Molecular e Engenharia Genética, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, CEP 13083-875, CP 6010, Campinas, São Paulo, Brazil
| | - Américo J C Viana
- Centro de Biologia Molecular e Engenharia Genética, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, CEP 13083-875, CP 6010, Campinas, São Paulo, Brazil
| | - Timothy J Hearn
- Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, UK
| | - Jelena Kusakina
- School of Biological Sciences, University of Bristol, Bristol BS8 1TQ, UK; Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Fiona E Belbin
- School of Biological Sciences, University of Bristol, Bristol BS8 1TQ, UK
| | - David Wells Newman
- Centro de Biologia Molecular e Engenharia Genética, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, CEP 13083-875, CP 6010, Campinas, São Paulo, Brazil
| | - Aline Yochikawa
- School of Biological Sciences, University of Bristol, Bristol BS8 1TQ, UK; Universidade Estadual de Campinas, Barão Geraldo, Campinas, São Paulo, Brazil
| | | | - Anupama Chembath
- School of Biological Sciences, University of Bristol, Bristol BS8 1TQ, UK; School of Life & Health Sciences, Aston University, Birmingham B4 7ET, UK
| | | | - Michael J Haydon
- Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, UK; School of BioSciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Carlos T Hotta
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Michel Vincentz
- Centro de Biologia Molecular e Engenharia Genética, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, CEP 13083-875, CP 6010, Campinas, São Paulo, Brazil
| | - Alex A R Webb
- Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, UK.
| | - Antony N Dodd
- School of Biological Sciences, University of Bristol, Bristol BS8 1TQ, UK.
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