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Li YT, Gao HY, Zhang ZS. Effects of Environmental and Non-Environmental Factors on Dynamic Photosynthetic Carbon Assimilation in Leaves under Changing Light. Plants (Basel) 2023; 12:2015. [PMID: 37653932 PMCID: PMC10223794 DOI: 10.3390/plants12102015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/12/2023] [Accepted: 05/16/2023] [Indexed: 09/02/2023]
Abstract
Major research on photosynthesis has been carried out under steady light. However, in the natural environment, steady light is rare, and light intensity is always changing. Changing light affects (usually reduces) photosynthetic carbon assimilation and causes decreases in biomass and yield. Ecologists first observed the importance of changing light for plant growth in the understory; other researchers noticed that changing light in the crop canopy also seriously affects yield. Here, we review the effects of environmental and non-environmental factors on dynamic photosynthetic carbon assimilation under changing light in higher plants. In general, dynamic photosynthesis is more sensitive to environmental and non-environmental factors than steady photosynthesis, and dynamic photosynthesis is more diverse than steady photosynthesis. Finally, we discuss the challenges of photosynthetic research under changing light.
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Affiliation(s)
- Yu-Ting Li
- College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
| | - Hui-Yuan Gao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an 271018, China
| | - Zi-Shan Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an 271018, China
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2
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Andov B, Boulaflous-Stevens A, Pain C, Mermet S, Voisin M, Charrondiere C, Vanrobays E, Tutois S, Evans DE, Kriechbaumer V, Tatout C, Graumann K. In Depth Topological Analysis of Arabidopsis Mid-SUN Proteins and Their Interaction with the Membrane-Bound Transcription Factor MaMYB. Plants (Basel) 2023; 12:plants12091787. [PMID: 37176845 PMCID: PMC10180911 DOI: 10.3390/plants12091787] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/20/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
Mid-SUN proteins are a neglected family of conserved type III membrane proteins of ancient origin with representatives in plants, animals, and fungi. Previous higher plant studies have associated them with functions at the nuclear envelope and the endoplasmic reticulum (ER). In this study, high-resolution confocal light microscopy is used to explore the localisation of SUN3 and SUN4 in the perinuclear region, to explore topology, and to study the role of mid-SUNs on endoplasmic reticulum morphology. The role of SUN3 in the ER is reinforced by the identification of a protein interaction between SUN3 and the ER membrane-bound transcription factor maMYB. The results highlight the importance of mid-SUNs as functional components of the ER and outer nuclear membrane.
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Affiliation(s)
- Bisa Andov
- Department of Biological and Molecular Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford OX3 0BP, UK
| | | | - Charlotte Pain
- Department of Biological and Molecular Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford OX3 0BP, UK
| | - Sarah Mermet
- CNRS, Inserm, GReD Clermont-Ferrand, Université Clermont Auvergne, 63001 Clermont-Ferrand, France
| | - Maxime Voisin
- CNRS, Inserm, GReD Clermont-Ferrand, Université Clermont Auvergne, 63001 Clermont-Ferrand, France
| | - Camille Charrondiere
- CNRS, Inserm, GReD Clermont-Ferrand, Université Clermont Auvergne, 63001 Clermont-Ferrand, France
| | - Emmanuel Vanrobays
- CNRS, Inserm, GReD Clermont-Ferrand, Université Clermont Auvergne, 63001 Clermont-Ferrand, France
| | - Sylvie Tutois
- CNRS, Inserm, GReD Clermont-Ferrand, Université Clermont Auvergne, 63001 Clermont-Ferrand, France
| | - David E Evans
- Department of Biological and Molecular Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford OX3 0BP, UK
| | - Verena Kriechbaumer
- Department of Biological and Molecular Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford OX3 0BP, UK
| | - Christophe Tatout
- CNRS, Inserm, GReD Clermont-Ferrand, Université Clermont Auvergne, 63001 Clermont-Ferrand, France
| | - Katja Graumann
- Department of Biological and Molecular Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford OX3 0BP, UK
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Abstract
Mitosis and meiosis in higher plants involve significant reconfiguration of the nuclear envelope and the proteins that interact with it. The dynamic series of events involves a range of interactions, movement, breakdown, and reformation of this complex system. Recently, progress has been made in identifying and characterizing the protein and membrane interactome that performs these complex tasks, including constituents of the nuclear envelope, the cytoskeleton, nucleoskeleton, and chromatin. This review will present the current understanding of these interactions and advances in knowledge of the processes for the breakdown and reformation of the nuclear envelope during cell divisions in plants.
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Affiliation(s)
- Monica Pradillo
- Departamento de Genética, Fisiología y Microbiología, Facultad de Ciencias Biológicas, Universidad Complutense de Madrid, Madrid, Spain
| | - David Evans
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, UK
| | - Katja Graumann
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, UK
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Poulet A, Probst AV, Graumann K, Tatout C, Evans D. Exploring the evolution of the proteins of the plant nuclear envelope. Nucleus 2017; 8:46-59. [PMID: 27644504 PMCID: PMC5287204 DOI: 10.1080/19491034.2016.1236166] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 08/22/2016] [Accepted: 09/07/2016] [Indexed: 10/21/2022] Open
Abstract
In this study, we explore the plasticity during evolution of proteins of the higher plant nuclear envelope (NE) from the most ancestral plant species to advanced angiosperms. The higher plant NE contains a functional Linker of Nucleoskeleton and Cytoskeleton (LINC) complex based on conserved Sad1-Unc84 (SUN) domain proteins and plant specific Klarsicht/Anc1/Syne homology (KASH) domain proteins. Recent evidence suggests the presence of a plant lamina underneath the inner membrane and various coiled-coil proteins have been hypothesized to be associated with it including Crowded Nuclei (CRWN; also termed LINC and NMCP), Nuclear Envelope Associated Protein (NEAP) protein families as well as the CRWN binding protein KAKU4. SUN domain proteins appear throughout with a key role for mid-SUN proteins suggested. Evolution of KASH domain proteins has resulted in increasing complexity, with some appearing in all species considered, while other KASH proteins are progressively gained during evolution. Failure to identify CRWN homologs in unicellular organisms included in the study and their presence in plants leads us to speculate that convergent evolution may have occurred in the formation of the lamina with each kingdom having new proteins such as the Lamin B receptor (LBR) and Lamin-Emerin-Man1 (LEM) domain proteins (animals) or NEAPs and KAKU4 (plants). Our data support a model in which increasing complexity at the nuclear envelope occurred through the plant lineage and suggest a key role for mid-SUN proteins as an early and essential component of the nuclear envelope.
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Affiliation(s)
- Axel Poulet
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
- UMR CNRS 6293 INSERM U1103 Clermont Université, GReD, Aubière, France
| | - Aline V. Probst
- UMR CNRS 6293 INSERM U1103 Clermont Université, GReD, Aubière, France
| | - Katja Graumann
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
| | - Christophe Tatout
- UMR CNRS 6293 INSERM U1103 Clermont Université, GReD, Aubière, France
| | - David Evans
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
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Pawar V, Poulet A, Détourné G, Tatout C, Vanrobays E, Evans DE, Graumann K. A novel family of plant nuclear envelope-associated proteins. J Exp Bot 2016; 67:5699-5710. [PMID: 27630107 DOI: 10.1093/jxb/erw332] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
This paper describes the characterisation of a new family of higher plant nuclear envelope-associated proteins (NEAPs) that interact with other proteins of the nuclear envelope. In the model plant Arabidopsis thaliana, the family consists of three genes expressed ubiquitously (AtNEAP1-3) and a pseudogene (AtNEAP4). NEAPs consist of extensive coiled-coil domains, followed by a nuclear localisation signal and a C-terminal predicted transmembrane domain. Domain deletion mutants confirm the presence of a functional nuclear localisation signal and transmembrane domain. AtNEAP proteins localise to the nuclear periphery as part of stable protein complexes, are able to form homo- and heteromers, and interact with the SUN domain proteins AtSUN1 and AtSUN2, involved in the linker of nucleoskeleton and cytoskeleton (LINC) complex. An A. thaliana cDNA library screen identified a putative transcription factor called AtbZIP18 as a novel interactor of AtNEAP1, which suggest a connection between NEAP and chromatin. An Atneap1 Atneap3 double-knockout mutant showed reduced root growth, and altered nuclear morphology and chromatin structure. Thus AtNEAPs are suggested as inner nuclear membrane-anchored coiled-coil proteins with roles in maintaining nuclear morphology and chromatin structure.
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Affiliation(s)
- Vidya Pawar
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, OX3 0BP, UK UMR CNRS 6293 INSERM U 1103 Clermont Université, GReD, Avenue des Landais 63171 Aubière Cedex, France
| | - Axel Poulet
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, OX3 0BP, UK UMR CNRS 6293 INSERM U 1103 Clermont Université, GReD, Avenue des Landais 63171 Aubière Cedex, France
| | - Gwénaëlle Détourné
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, OX3 0BP, UK UMR CNRS 6293 INSERM U 1103 Clermont Université, GReD, Avenue des Landais 63171 Aubière Cedex, France
| | - Christophe Tatout
- UMR CNRS 6293 INSERM U 1103 Clermont Université, GReD, Avenue des Landais 63171 Aubière Cedex, France
| | - Emmanuel Vanrobays
- UMR CNRS 6293 INSERM U 1103 Clermont Université, GReD, Avenue des Landais 63171 Aubière Cedex, France
| | - David E Evans
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, OX3 0BP, UK
| | - Katja Graumann
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, OX3 0BP, UK
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Abstract
In non-plant systems, chromatin association with the nuclear periphery affects gene expression, where interactions with nuclear envelope proteins can repress and interactions with nucleoporins can enhance transcription. In plants, both hetero- and euchromatin can localize at the nuclear periphery, but the effect of proximity to the nuclear periphery on gene expression remains largely unknown. This study explores the putative function of Seh1 and Nup50a nucleoporins on gene expression by using the Lac Operator / Lac Repressor (LacI-LacO) system adapted to Arabidopsis thaliana. We used LacO fused to the luciferase reporter gene (LacO:Luc) to investigate whether binding of the LacO:Luc transgene to nucleoporin:LacI protein fusions alters luciferase expression. Two separate nucleoporin-LacI-YFP fusions were introduced into single insert, homozygous LacO:Luc Arabidopsis plants. Homozygous plants carrying LacO:Luc and a single insert of either Seh1-LacI-YFP or Nup50a-LacI-YFP were tested for luciferase activity and compared to plants containing LacO:Luc only. Seh1-LacI-YFP increased, while Nup50a-LacI-YFP decreased luciferase activity. Seh1-LacI-YFP accumulated at the nuclear periphery as expected, while Nup50a-LacI-YFP was nucleoplasmic and was not selected for further study. Protein and RNA levels of luciferase were quantified by western blotting and RT-qPCR, respectively. Increased luciferase activity in LacO:Luc+Seh1-LacI-YFP plants was correlated with increased luciferase protein and RNA levels. This change of luciferase expression was abolished by disruption of LacI-LacO binding by treating with IPTG in young seedlings, rosette leaves and inflorescences. This study suggests that association with the nuclear periphery is involved in the regulation of gene expression in plants.
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Affiliation(s)
- Sarah Smith
- a Department of Biological and Medical Sciences ; Faculty of Health and Life Sciences; Oxford Brookes University ; Headington , Oxford , UK
| | - Carla Galinha
- a Department of Biological and Medical Sciences ; Faculty of Health and Life Sciences; Oxford Brookes University ; Headington , Oxford , UK
| | - Sophie Desset
- b UMR CNRS 6247; INSERM U931 GReD Clermont Universités 24 ; Aubiere , France
| | - Frances Tolmie
- a Department of Biological and Medical Sciences ; Faculty of Health and Life Sciences; Oxford Brookes University ; Headington , Oxford , UK
| | - David Evans
- a Department of Biological and Medical Sciences ; Faculty of Health and Life Sciences; Oxford Brookes University ; Headington , Oxford , UK
| | - Christophe Tatout
- b UMR CNRS 6247; INSERM U931 GReD Clermont Universités 24 ; Aubiere , France
| | - Katja Graumann
- a Department of Biological and Medical Sciences ; Faculty of Health and Life Sciences; Oxford Brookes University ; Headington , Oxford , UK
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Evans DE, Shvedunova M, Graumann K. The nuclear envelope in the plant cell cycle: structure, function and regulation. Ann Bot 2011; 107:1111-8. [PMID: 21239406 PMCID: PMC3091801 DOI: 10.1093/aob/mcq268] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Revised: 11/30/2010] [Accepted: 12/03/2010] [Indexed: 05/03/2023]
Abstract
BACKGROUND Higher plants are, like animals, organisms in which successful completion of the cell cycle requires the breakdown and reformation of the nuclear envelope in a highly controlled manner. Interestingly, however, while the structures and processes appear similar, there are remarkable differences in protein composition and function between plants and animals. SCOPE Recent characterization of integral and associated components of the plant nuclear envelope has been instrumental in understanding its functions and behaviour. It is clear that protein interactions at the nuclear envelope are central to many processes in interphase and dividing cells and that the nuclear envelope has a key role in structural and regulatory events. CONCLUSION Dissecting the mechanisms of nuclear envelope breakdown and reformation in plants is necessary before a better understanding of the functions of nuclear envelope components during the cell cycle can be gained.
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Affiliation(s)
| | | | - K. Graumann
- School of Life Sciences, Oxford Brookes University, Oxford OX3 0BP, UK
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