1
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Midorikawa K, Kodama Y. A tool for live-cell confocal imaging of temperature-dependent organelle dynamics. Microscopy (Oxf) 2024; 73:343-348. [PMID: 38217102 PMCID: PMC11288189 DOI: 10.1093/jmicro/dfad064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/19/2023] [Accepted: 01/08/2024] [Indexed: 01/15/2024] Open
Abstract
Intracellular organelles alter their morphology in response to ambient conditions such as temperature to optimize physiological activities in cells. Observing organelle dynamics at various temperatures deepens our understanding of cellular responses to the environment. Confocal laser microscopy is a powerful tool for live-cell imaging of fluorescently labeled organelles. However, the large contact area between the specimen and the ambient air on the microscope stage makes it difficult to maintain accurate cellular temperatures. Here, we present a method for precisely controlling cellular temperatures using a custom-made adaptor that can be installed on a commercially available temperature-controlled microscope stage. Using this adaptor, we observed temperature-dependent organelle dynamics in living plant cells; morphological changes in chloroplasts and peroxisomes were temperature dependent. This newly developed adaptor can be easily placed on a temperature-controlled stage to capture intracellular responses to temperature at unprecedentedly high resolution.
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Affiliation(s)
- Keiko Midorikawa
- Center for Bioscience Research and Education, Utsunomiya University, 350 Mine, Utsunomiya, Tochigi 321-8505, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, 350 Mine, Utsunomiya, Tochigi 321-8505, Japan
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2
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Ishikawa K, Kodama Y. Bilirubin Distribution in Plants at the Subcellular and Tissue Levels. PLANT & CELL PHYSIOLOGY 2024; 65:762-769. [PMID: 38466577 PMCID: PMC11138361 DOI: 10.1093/pcp/pcae017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/12/2024] [Accepted: 02/15/2024] [Indexed: 03/13/2024]
Abstract
In heterotrophs, heme degradation produces bilirubin, a tetrapyrrole compound that has antioxidant activity. In plants, heme is degraded in plastids and is believed to be converted to phytochromobilin rather than bilirubin. Recently, we used the bilirubin-inducible fluorescent protein UnaG to reveal that plants produce bilirubin via a non-enzymatic reaction with NADPH. In the present study, we used an UnaG-based live imaging system to visualize bilirubin accumulation in Arabidopsis thaliana and Nicotiana benthamiana at the organelle and tissue levels. In chloroplasts, bilirubin preferentially accumulated in the stroma, and the stromal bilirubin level increased upon dark treatment. Investigation of intracellular bilirubin distribution in leaves and roots showed that it accumulated mostly in plastids, with low levels detected in the cytosol and other organelles, such as peroxisomes, mitochondria and the endoplasmic reticulum. A treatment that increased bilirubin production in chloroplasts decreased the bilirubin level in peroxisomes, implying that a bilirubin precursor is transported between the two organelles. At the cell and tissue levels, bilirubin showed substantial accumulation in the root elongation region but little or none in the root cap and guard cells. Intermediate bilirubin accumulation was observed in other shoot and root tissues, with lower levels in shoot tissues. Our data revealed the distribution of bilirubin in plants, which has implications for the transport and physiological function of tetrapyrroles.
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Affiliation(s)
- Kazuya Ishikawa
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
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3
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Yong LK, Keino I, Kanna Y, Noguchi M, Fujisawa M, Kodama Y. Functional comparison of phototropin from the liverworts Apopellia endiviifolia and Marchantia polymorpha. Photochem Photobiol 2024; 100:782-792. [PMID: 37882095 DOI: 10.1111/php.13869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 10/03/2023] [Accepted: 10/09/2023] [Indexed: 10/27/2023]
Abstract
Phototropin (phot) is a blue light (BL) receptor and thermosensor that mediates chloroplast movements in plants. Liverworts, as early-diverging plant species, have a single copy of PHOT gene, and the phot protein in each liverwort activates the signaling pathway adapted to its specific growing environment. In this study, we functionally compared phot from two different liverworts species: Apopellia endiviifolia (Aephot) and Marchantia polymorpha (Mpphot). The BL-dependent photochemical activity of Aephot was similar to that of Mpphot, whereas the thermochemical activity of Aephot was lower than that of Mpphot. Therefore, the phot-mediated signaling pathways of the two plant species may differ more in response to temperature than to BL. Furthermore, we analyzed the functional compatibility of Aephot and Mpphot in chloroplast movements by transiently expressing AePHOT or MpPHOT. The transient expression of AePHOT did not mediate chloroplast movement in M. polymorpha, showing the incompatibility of Aephot with the signaling pathway of M. polymorpha. By contrast, the transient expression of MpPHOT mediated chloroplast movement in A. endiviifolia, indicating the compatibility of Mpphot with the signaling pathway of A. endiviifolia. Our findings reveal both functional similarities and differences between Aephot and Mpphot proteins from the closely related liverworts.
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Affiliation(s)
- Lee-Kien Yong
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Issei Keino
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Tochigi, Japan
| | - Yui Kanna
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Tochigi, Japan
| | - Minoru Noguchi
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Tochigi, Japan
| | - Mami Fujisawa
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Tochigi, Japan
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4
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Yoshinaga N, Miyamoto T, Goto M, Tanaka A, Numata K. Phenylboronic Acid-Functionalized Micelles Dual-Targeting Boronic Acid Transporter and Polysaccharides for siRNA Delivery into Brown Algae. JACS AU 2024; 4:1385-1395. [PMID: 38665671 PMCID: PMC11040673 DOI: 10.1021/jacsau.3c00767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/05/2024] [Accepted: 02/20/2024] [Indexed: 04/28/2024]
Abstract
Brown algae play essential roles ecologically, practically, and evolutionarily because they maintain coastal areas, capture carbon dioxide, and produce valuable chemicals such as therapeutic drugs. To unlock their full potential, understanding the unique molecular biology of brown algae is imperative. Genetic engineering tools that regulate homeostasis in brown algae are essential for determining their biological mechanisms in detail. However, few methodologies have been developed to control gene expression due to the robust structural barriers of brown algae. To address this issue, we designed peptide-based, small interfering RNA (siRNA)-loaded micelles decorated with phenylboronic acid (PBA) ligands. The PBA ligands facilitated the cellular uptake of the micelles into a model brown alga, Ectocarpus siliculosus (E. Siliculosus), through chemical interaction with polysaccharides in the cell wall and biological recognition by boronic acid transporters on the plasma membrane. The micelles, featuring "kill two birds with one stone" ligands, effectively induced gene silencing related to auxin biosynthesis. As a result, the growth of E. siliculosus was temporarily inhibited without persistent genome editing. This study demonstrated the potential for exploring the characteristics of brown algae through a simple yet effective approach and presented a feasible system for delivering siRNA in brown algae.
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Affiliation(s)
- Naoto Yoshinaga
- Biomacromolecule
Research Team, RIKEN Center for Sustainable
Resource Science, Wako-shi, Saitama 351-0198, Japan
- Institute
for Advanced Biosciences, Keio University, Tsuruoka-shi, Yamagata 997-0017, Japan
| | - Takaaki Miyamoto
- Biomacromolecule
Research Team, RIKEN Center for Sustainable
Resource Science, Wako-shi, Saitama 351-0198, Japan
| | - Mami Goto
- Biomacromolecule
Research Team, RIKEN Center for Sustainable
Resource Science, Wako-shi, Saitama 351-0198, Japan
| | - Atsuko Tanaka
- Department
of Chemistry, Biology and Marine Science, Faculty of Science, University of the Ryukyus, Nakagami-gun, Okinawa 903-0213, Japan
| | - Keiji Numata
- Biomacromolecule
Research Team, RIKEN Center for Sustainable
Resource Science, Wako-shi, Saitama 351-0198, Japan
- Institute
for Advanced Biosciences, Keio University, Tsuruoka-shi, Yamagata 997-0017, Japan
- Department
of Material Chemistry, Kyoto University, Kyoto-shi, Kyoto 606-8501, Japan
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5
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Yao X, Li R, Liu Y, Song P, Wu Z, Yan M, Luo J, Fan F, Wang Y. Feedback regulation of the isoprenoid pathway by SsdTPS overexpression has the potential to enhance plant tolerance to drought stress. PHYSIOLOGIA PLANTARUM 2024; 176:e14277. [PMID: 38566271 DOI: 10.1111/ppl.14277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 03/01/2024] [Accepted: 03/06/2024] [Indexed: 04/04/2024]
Abstract
In order to maintain the dynamic physiological balance, plants are compelled to adjust their energy metabolism and signal transduction to cope with the abiotic stresses caused by complex and changeable environments. The diterpenoid natural compound and secondary metabolites, sclareol, derived from Salvia sclarea, has gained significant attention owing to its economic value as a spice material and diverse physiological activities. Here, we focused on the roles and regulatory mechanisms of the sclareol diterpene synthase gene SsdTPS in the resistance of S. sclarea to abiotic stresses. Our results suggested that abiotic stresses could induce the response and upregulation of SsdTPS expression and isoprenoid pathway in S. sclarea. Ectopic expression of SsdTPS conferred drought tolerance in transgenic Arabidopsis, compared with wild-type. Overexpression of SsdTPS enhanced the transcription of ABA signal transduction synthetic regulators and induced the positive feedback upregulating key regulatory genes in the MEP pathway, thereby promoting the increase of ABA content and improving drought tolerance in transgenic plants. In addition, SsdTPS-overexpressed transgenic Arabidopsis improved the responses of stomatal regulatory genes and ROS scavenging enzyme activities and gene expression to drought stress. This promoted the stomatal closure and ROS reduction, thus enhancing water retention capacity and reducing oxidative stress damage. These findings unveil the potentially positive role of SsdTPS in orchestrating multiple regulatory mechanisms and maintaining homeostasis for improved abiotic stress resistance in S. sclarea, providing a novel insight into strategies for promoting drought resistance and cultivating highly tolerant plants.
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Affiliation(s)
- Xiangyu Yao
- State Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Science, Northwest University, China
| | - Rui Li
- State Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Science, Northwest University, China
| | - Yanan Liu
- State Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Science, Northwest University, China
| | - Peng Song
- State Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Science, Northwest University, China
| | - Ziyi Wu
- State Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Science, Northwest University, China
| | - Meilin Yan
- State Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Science, Northwest University, China
| | - Jinmei Luo
- State Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Science, Northwest University, China
| | - Fenggui Fan
- State Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Science, Northwest University, China
- Shaanxi Institute for Food and Drug Control, Shaanxi Key Laboratory of Food and Drug Safety Monitoring, China
| | - Yingjuan Wang
- State Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), College of Life Science, Northwest University, China
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6
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Petutschnig EK, Pierdzig L, Mittendorf J, Niebisch JM, Lipka V. A novel fluorescent protein pair facilitates FLIM-FRET analysis of plant immune receptor interaction under native conditions. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:746-759. [PMID: 37878766 DOI: 10.1093/jxb/erad418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 10/24/2023] [Indexed: 10/27/2023]
Abstract
Elucidating protein-protein interactions is crucial for our understanding of molecular processes within living organisms. Microscopy-based techniques can detect protein-protein interactions in vivo at the single-cell level and provide information on their subcellular location. Fluorescence lifetime imaging microscopy (FLIM)-Förster resonance energy transfer (FRET) is one of the most robust imaging approaches, but it is still very challenging to apply this method to proteins which are expressed under native conditions. Here we describe a novel combination of fluorescence proteins (FPs), mCitrine and mScarlet-I, which is ideally suited for FLIM-FRET studies of low abundance proteins expressed from their native promoters in stably transformed plants. The donor mCitrine displays excellent brightness in planta, near-mono-exponential fluorescence decay, and a comparatively long fluorescence lifetime. Moreover, the FRET pair has a good spectral overlap and a large Förster radius. This allowed us to detect constitutive as well as ligand-induced interaction of the Arabidopsis chitin receptor components CERK1 and LYK5 in a set of proof-of-principle experiments. Due to the good brightness of the acceptor mScarlet-I, the FP combination can be readily utilized for co-localization studies. The FP pair is also suitable for co-immunoprecipitation experiments and western blotting, facilitating a multi-method approach for studying and confirming protein-protein interactions.
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Affiliation(s)
- Elena Kristin Petutschnig
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
- Central Microscopy Facility of the Faculty of Biology & Psychology, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
| | - Leon Pierdzig
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
| | - Josephine Mittendorf
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
| | - Jule Meret Niebisch
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
| | - Volker Lipka
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
- Central Microscopy Facility of the Faculty of Biology & Psychology, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
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7
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Ichikawa S, Sakata M, Oba T, Kodama Y. Fluorescein staining of chloroplast starch granules in living plants. PLANT PHYSIOLOGY 2024; 194:662-672. [PMID: 37792703 PMCID: PMC10828193 DOI: 10.1093/plphys/kiad528] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 09/08/2023] [Accepted: 09/09/2023] [Indexed: 10/06/2023]
Abstract
Chloroplast starch granules (cpSGs) store energy harvested through photosynthesis in plants, and cpSG dynamics have important roles in plant energy metabolism and stress responses. To date, cpSGs have been visualized using several methods, such as iodine staining; however, no method can be used to specifically visualize cpSGs in living cells from various plant species. Here, we report a simple method to visualize cpSGs in living plant cells in various species by staining with fluorescein, a commonly used fluorescent dye. We show that fluorescein is taken up into chloroplasts and interacts with cpSGs similarly to iodine. Fluorescein also interacts with refined starch in vitro. Using a fluorescein derivative for ultrabright cpSG imaging, we produced high-quality 3D reconstructions of cpSGs and evaluated their accumulation in multiple plant species. As fluorescein is well known and readily purchasable, our fluorescein-based staining method should contribute to all research regarding starch.
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Affiliation(s)
- Shintaro Ichikawa
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Tochigi 321-8505, Japan
| | - Momoko Sakata
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Toru Oba
- Graduate School of Regional Development and Creativity, Utsunomiya University, Tochigi 321-8505, Japan
- Faculty of Engineering, Utsunomiya University, Tochigi 321-8585, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Tochigi 321-8505, Japan
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
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8
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Yuan J, Li D, Liang Y, Meng Y, Li L, Yang L, Pei M, Feng L, Li J. An optimum study on the laser scanning confocal microscopy techniques for BiFC assay using plant protoplast. BOTANICAL STUDIES 2024; 65:2. [PMID: 38194078 PMCID: PMC10776556 DOI: 10.1186/s40529-024-00409-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/03/2024] [Indexed: 01/10/2024]
Abstract
BACKGROUND The bimolecular fluorescence complementation (BiFC) assay is commonly used for investigating protein-protein interactions. While several BiFC detection systems have been developed, there is a limited amount of research focused on using laser scanning confocal microscope (LSCM) techniques to observe protoplasts. Protoplasts are more susceptible to damage and instability compared to their original cell state due to the preparation treatments they undergo, which makes it challenging for researchers to manipulate them during observation under LSCMs. Therefore, it is crucial to utilize microscope techniques properly and efficiently in BiFC assays. RESULTS When the target fluorescence is weak, the autofluorescence of chloroplast particles in protoplasts can interfere with the detection of BiFC signals localized in the nuclear region. Spectrum analysis revealed that chloroplast autofluorescence can be excited by lasers of various types, with the highest fluorescence signal observed at around 660 nm. Furthermore, our investigation into the impact of different pipette tips on the integrity of protoplast samples indicated that the utilization of cut tips with larger openings can mitigate cell breakage. We presented a workflow of LSCM techniques for investigating protoplast BiFC and discussed the microscopic manipulation involved in sample preparation and image capturing. CONCLUSION When the BiFC signals are weak, they may be affected by chloroplast autofluorescence. However, when used properly, the autofluorescence of chloroplasts can serve as an excellent internal marker for effectively distinguishing other signals. In combination with other findings, this study can provide valuable reference for researchers conducting BiFC assays and related studies.
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Affiliation(s)
- Jinhong Yuan
- Engineering Research Center of Crop Genetic Improvement and Germplasm Innovation in Henan Province, College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Daiyu Li
- Engineering Research Center of Crop Genetic Improvement and Germplasm Innovation in Henan Province, College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Yi Liang
- Engineering Research Center of Crop Genetic Improvement and Germplasm Innovation in Henan Province, College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Yao Meng
- Engineering Research Center of Crop Genetic Improvement and Germplasm Innovation in Henan Province, College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Li Li
- Engineering Research Center of Crop Genetic Improvement and Germplasm Innovation in Henan Province, College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Lin Yang
- Engineering Research Center of Crop Genetic Improvement and Germplasm Innovation in Henan Province, College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Mingyue Pei
- Engineering Research Center of Crop Genetic Improvement and Germplasm Innovation in Henan Province, College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Liuchun Feng
- Engineering Research Center of Crop Genetic Improvement and Germplasm Innovation in Henan Province, College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Junhua Li
- Engineering Research Center of Crop Genetic Improvement and Germplasm Innovation in Henan Province, College of Life Sciences, Henan Normal University, Xinxiang, 453007, China.
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9
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Ishikawa K, Xie X, Osaki Y, Miyawaki A, Numata K, Kodama Y. Bilirubin is produced nonenzymatically in plants to maintain chloroplast redox status. SCIENCE ADVANCES 2023; 9:eadh4787. [PMID: 37285441 DOI: 10.1126/sciadv.adh4787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/01/2023] [Indexed: 06/09/2023]
Abstract
Bilirubin, a potent antioxidant, is a product of heme catabolism in heterotrophs. Heterotrophs mitigate oxidative stress resulting from free heme by catabolism into bilirubin via biliverdin. Although plants also convert heme to biliverdin, they are generally thought to be incapable of producing bilirubin because they lack biliverdin reductase, the enzyme responsible for bilirubin biosynthesis in heterotrophs. Here, we demonstrate that bilirubin is produced in plant chloroplasts. Live-cell imaging using the bilirubin-dependent fluorescent protein UnaG revealed that bilirubin accumulated in chloroplasts. In vitro, bilirubin was produced nonenzymatically through a reaction between biliverdin and reduced form of nicotinamide adenine dinucleotide phosphate at concentrations comparable to those in chloroplasts. In addition, increased bilirubin production led to lower reactive oxygen species levels in chloroplasts. Our data refute the generally accepted pathway of heme degradation in plants and suggest that bilirubin contributes to the maintenance of redox status in chloroplasts.
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Affiliation(s)
- Kazuya Ishikawa
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan
| | - Xiaonan Xie
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
| | - Yasuhide Osaki
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
| | - Atsushi Miyawaki
- Laboratory for Cell Function Dynamics, RIKEN Center for Brain Science, Saitama 351-0198, Japan
- Biotechnological Optics Research Team, RIKEN Center for Advanced Photonics; Saitama, 351-0198, Japan
| | - Keiji Numata
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University; Kyoto, 615-8246, Japan
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, Saitama 351-0198, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, Saitama 351-0198, Japan
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10
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Yong LK, Kodama Y. Dark-induced chloroplast relocation depends on actin filaments in the liverwort Apopellia endiviifolia along with the light- and cold-induced relocations. PLANT, CELL & ENVIRONMENT 2023; 46:1822-1832. [PMID: 36782387 DOI: 10.1111/pce.14566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/03/2023] [Accepted: 02/12/2023] [Indexed: 05/04/2023]
Abstract
Chloroplasts move to the periclinal walls of cells under weak light to harness light energy for photosynthesis and to anticlinal walls to avoid strong light. These responses involve the cytoskeleton components microtubules and/or actin filaments. In the dark, chloroplasts move to the anticlinal cell walls bordering neighbouring cells (dark-positioning response), but this response in various plants normally requires a prolonged dark incubation period, which has hampered analysis. However, we recently demonstrated the dark-positioning response that can be induced after a short period of dark incubation in the liverwort Apopellia endiviifolia. Here, we investigated whether the cytoskeleton components function in the dark-positioning response of A. endiviifolia cells. Microtubules and actin filaments were fluorescently visualised in A. endiviifolia cells and were disrupted following treatment with the microtubule and actin filament polymerisation inhibitors. The dark-positioning response was unaffected in the cells with disrupted microtubules. By contrast, the dark-positioning response was inhibited by the disruption of actin filaments. The disruption of actin filaments also restricted chloroplast mobility during light- and cold-dependent chloroplast movements in A. endiviifolia. Therefore, the dark-positioning response of A. endiviifolia depends solely on an actin filament-associated motility mechanism, as do the light- and cold-dependent chloroplast responses.
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Affiliation(s)
- Lee-Kien Yong
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
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11
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Ishikawa K, Kobayashi M, Kusano M, Numata K, Kodama Y. Using the organelle glue technique to engineer the plant cell metabolome. PLANT CELL REPORTS 2023; 42:599-607. [PMID: 36705704 DOI: 10.1007/s00299-023-02982-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 01/11/2023] [Indexed: 06/18/2023]
Abstract
By using the organelle glue technique, we artificially manipulated organelle interactions and controlled the plant metabolome at the pathway level. Plant cell metabolic activity changes with fluctuating environmental conditions, in part via adjustments in the arrangement and interaction of organelles. This hints at the potential for designing plants with desirable metabolic activities for food and pharmaceutical industries by artificially controlling the interaction of organelles through genetic modification. We previously developed a method called the organelle glue technique, in which chloroplast-chloroplast adhesion is induced in plant cells using the multimerization properties of split fluorescent proteins. Here, we generated transgenic Arabidopsis (Arabidopsis thaliana) plants in which chloroplasts adhere to each other and performed metabolome analysis to examine the metabolic changes in these lines. In plant cells expressing a construct encoding the red fluorescent protein mCherry targeted to the chloroplast outer envelope by fusion with a signal sequence (cTP-mCherry), chloroplasts adhered to each other and formed chloroplast aggregations. Mitochondria and peroxisomes were embedded in the aggregates, suggesting that normal interactions between chloroplasts and these organelles were also affected. Metabolome analysis of the cTP-mCherry-expressing Arabidopsis shoots revealed significantly higher levels of glycine, serine, and glycerate compared to control plants. Notably, these are photorespiratory metabolites that are normally transported between chloroplasts, mitochondria, and peroxisomes. Together, our data indicate that chloroplast-chloroplast adhesion alters organellar interactions with mitochondria and peroxisomes and disrupts photorespiratory metabolite transport. These results highlight the possibility of controlling plant metabolism at the pathway level by manipulating organelle interactions.
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Affiliation(s)
- Kazuya Ishikawa
- Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Tochigi, Japan
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Makoto Kobayashi
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, Japan
| | - Miyako Kusano
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, Japan
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Tsukuba-Plant Innovation Research Center, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Keiji Numata
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
- Biomacromolecules Research Team, Center for Sustainable Resource Science, RIKEN, Wako, Saitama, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Tochigi, Japan.
- Biomacromolecules Research Team, Center for Sustainable Resource Science, RIKEN, Wako, Saitama, Japan.
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12
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Inada N. A Guide to Plant Intracellular Temperature Imaging using Fluorescent Thermometers. PLANT & CELL PHYSIOLOGY 2023; 64:7-18. [PMID: 36039974 DOI: 10.1093/pcp/pcac123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 07/06/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
All aspects of plant physiology are influenced by temperature. Changes in environmental temperature alter the temperatures of plant tissues and cells, which then affect various cellular activities, such as gene expression, protein stability and enzyme activities. In turn, changes in cellular activities, which are associated with either exothermic or endothermic reactions, can change the local temperature in cells and tissues. In the past 10 years, a number of fluorescent probes that detect temperature and enable intracellular temperature imaging have been reported. Intracellular temperature imaging has revealed that there is a temperature difference >1°C inside cells and that the treatment of cells with mitochondrial uncoupler or ionomycin can cause more than a 1°C intracellular temperature increase in mammalian cultured cells. Thermogenesis mechanisms in brown adipocytes have been revealed with the aid of intracellular temperature imaging. While there have been no reports on plant intracellular temperature imaging thus far, intracellular temperature imaging is expected to provide a new way to analyze the mechanisms underlying the various activities of plant cells. In this review, I will first summarize the recent progress in the development of fluorescent thermometers and their biological applications. I will then discuss the selection of fluorescent thermometers and experimental setup for the adaptation of intracellular temperature imaging to plant cells. Finally, possible applications of intracellular temperature imaging to investigate plant cell functions will be discussed.
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Affiliation(s)
- Noriko Inada
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai-shi, Osaka, 599-8531 Japan
- School of Agriculture, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai-shi, Osaka, 599-8531 Japan
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13
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Fukushima T, Kodama Y. Selection of a histidine auxotrophic Marchantia polymorpha strain with an auxotrophic selective marker. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2022; 39:345-354. [PMID: 37283617 PMCID: PMC10240916 DOI: 10.5511/plantbiotechnology.22.0810a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/10/2022] [Indexed: 06/08/2023]
Abstract
Marchantia polymorpha has emerged as a model liverwort species, with molecular tools increasingly available. In the present study, we developed an auxotrophic strain of M. polymorpha and an auxotrophic selective marker gene as new experimental tools for this valuable model system. Using CRISPR (clustered regularly interspaced palindromic repeats)/Cas9-mediated genome editing, we mutated the genomic region for IMIDAZOLEGLYCEROL-PHOSPHATE DEHYDRATASE (IGPD) in M. polymorpha to disrupt the biosynthesis of histidine (igpd). We modified an IGPD gene (IGPDm) with silent mutations, generating a histidine auxotrophic selective marker gene that was not a target of our CRISPR/Cas9-mediated genome editing. The M. polymorpha igpd mutant was a histidine auxotrophic strain, growing only on medium containing histidine. The igpd mutant could be complemented by transformation with the IGPDm gene, indicating that this gene could be used as an auxotrophic selective marker. Using the IGPDm marker in the igpd mutant background, we produced transgenic lines without the need for antibiotic selection. The histidine auxotrophic strain igpd and auxotrophic selective marker IGPDm represent new molecular tools for M. polymorpha research.
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Affiliation(s)
- Tatsushi Fukushima
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Tochigi 321-8505, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Tochigi 321-8505, Japan
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14
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Ichikawa S, Ishikawa K, Miyakawa H, Kodama Y. Live-cell imaging of the chloroplast outer envelope membrane using fluorescent dyes. PLANT DIRECT 2022; 6:e462. [PMID: 36398034 PMCID: PMC9666008 DOI: 10.1002/pld3.462] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 10/15/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
Chloroplasts are organelles composed of sub-organellar compartments-stroma, thylakoids, and starch granules-and are surrounded by outer and inner envelope membranes (OEM and IEM, respectively). The chloroplast OEM and IEM play key roles not only as a barrier separating the chloroplast components from the cytosol but also in the interchange of numerous metabolites and proteins between the chloroplast interior and the cytosol. Fluorescent protein markers for the chloroplast OEM have been widely used to visualize the outermost border of chloroplasts. However, the use of marker proteins requires an established cellular genetic transformation method, which limits the plant species in which marker proteins can be used. Moreover, the high accumulation of OEM marker proteins often elicits abnormal morphological phenotypes of the OEM. Because the OEM can currently only be visualized using exogenous marker proteins, the behaviors of the chloroplast and/or its OEM remain unknown in wild-type cells of various plant species. Here, we visualized the OEM using live-cell staining with the fluorescent dyes rhodamine B and Nile red in several plant species, including crops. We propose rhodamine B and Nile red as new tools for visualizing the chloroplast OEM in living plant cells that do not require genetic transformation. Significance Statement We established a live-cell imaging method to visualize the chloroplast outer envelope membrane by staining living cells with fluorescent dyes. This method does not require genetic transformation and allows the observation of the chloroplast outer envelope membrane in various plant species.
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Affiliation(s)
- Shintaro Ichikawa
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- Graduate School of Regional Development and CreativityUtsunomiya UniversityTochigiJapan
| | - Kazuya Ishikawa
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
| | - Hitoshi Miyakawa
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- Graduate School of Regional Development and CreativityUtsunomiya UniversityTochigiJapan
| | - Yutaka Kodama
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- Graduate School of Regional Development and CreativityUtsunomiya UniversityTochigiJapan
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15
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Ruberti C, Feitosa-Araujo E, Xu Z, Wagner S, Grenzi M, Darwish E, Lichtenauer S, Fuchs P, Parmagnani AS, Balcerowicz D, Schoenaers S, de la Torre C, Mekkaoui K, Nunes-Nesi A, Wirtz M, Vissenberg K, Van Aken O, Hause B, Costa A, Schwarzländer M. MCU proteins dominate in vivo mitochondrial Ca2+ uptake in Arabidopsis roots. THE PLANT CELL 2022; 34:4428-4452. [PMID: 35938694 PMCID: PMC9614509 DOI: 10.1093/plcell/koac242] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 07/31/2022] [Indexed: 06/15/2023]
Abstract
Ca2+ signaling is central to plant development and acclimation. While Ca2+-responsive proteins have been investigated intensely in plants, only a few Ca2+-permeable channels have been identified, and our understanding of how intracellular Ca2+ fluxes is facilitated remains limited. Arabidopsis thaliana homologs of the mammalian channel-forming mitochondrial calcium uniporter (MCU) protein showed Ca2+ transport activity in vitro. Yet, the evolutionary complexity of MCU proteins, as well as reports about alternative systems and unperturbed mitochondrial Ca2+ uptake in knockout lines of MCU genes, leave critical questions about the in vivo functions of the MCU protein family in plants unanswered. Here, we demonstrate that MCU proteins mediate mitochondrial Ca2+ transport in planta and that this mechanism is the major route for fast Ca2+ uptake. Guided by the subcellular localization, expression, and conservation of MCU proteins, we generated an mcu triple knockout line. Using Ca2+ imaging in living root tips and the stimulation of Ca2+ transients of different amplitudes, we demonstrated that mitochondrial Ca2+ uptake became limiting in the triple mutant. The drastic cell physiological phenotype of impaired subcellular Ca2+ transport coincided with deregulated jasmonic acid-related signaling and thigmomorphogenesis. Our findings establish MCUs as a major mitochondrial Ca2+ entry route in planta and link mitochondrial Ca2+ transport with phytohormone signaling.
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Affiliation(s)
| | - Elias Feitosa-Araujo
- Institute of Plant Biology and Biotechnology, University of Münster, Münster, D-48143, Germany
| | - Zhaolong Xu
- Department of Biosciences, University of Milano, Milan, I-20133, Italy
- Jiangsu Provincial Key Laboratory of Agrobiology, Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China
| | | | - Matteo Grenzi
- Department of Biosciences, University of Milano, Milan, I-20133, Italy
| | - Essam Darwish
- Department of Biology, Lund University, Lund, 22362, Sweden
- Agricultural Botany Department, Faculty of Agriculture, Plant Physiology Section, Cairo University, Giza, 12613, Egypt
| | - Sophie Lichtenauer
- Institute of Plant Biology and Biotechnology, University of Münster, Münster, D-48143, Germany
| | | | | | - Daria Balcerowicz
- Integrated Molecular Plant Physiology Research, University of Antwerp, Antwerp, B-2020, Belgium
| | - Sébastjen Schoenaers
- Integrated Molecular Plant Physiology Research, University of Antwerp, Antwerp, B-2020, Belgium
| | - Carolina de la Torre
- NGS Core Facility, Medical Faculty Mannheim, University of Heidelberg, Mannheim, D-68167, Germany
| | - Khansa Mekkaoui
- Department of Cell and Metabolic Biology, Leibniz Institute of Plant Biochemistry (IPB), Halle (Saale), D-06120, Germany
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, 36570-900, Brazil
| | - Markus Wirtz
- Centre for Organismal Studies (COS) Heidelberg, University of Heidelberg, Heidelberg, D-69120, Germany
| | - Kris Vissenberg
- Integrated Molecular Plant Physiology Research, University of Antwerp, Antwerp, B-2020, Belgium
- Department of Agriculture, Plant Biochemistry and Biotechnology Lab, Hellenic Mediterranean University, Heraklion, 71410, Greece
| | | | - Bettina Hause
- Department of Cell and Metabolic Biology, Leibniz Institute of Plant Biochemistry (IPB), Halle (Saale), D-06120, Germany
| | - Alex Costa
- Authors for correspondence: (A.C); (M.S.)
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16
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Ichikawa S, Kato S, Fujii Y, Ishikawa K, Numata K, Kodama Y. Organellar Glue: A Molecular Tool to Artificially Control Chloroplast-Chloroplast Interactions. ACS Synth Biol 2022; 11:3190-3197. [PMID: 36178266 PMCID: PMC9594315 DOI: 10.1021/acssynbio.2c00367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Organelles can physically interact to facilitate various cellular processes such as metabolite exchange. Artificially regulating these interactions represents a promising approach for synthetic biology. Here, we artificially controlled chloroplast-chloroplast interactions in living plant cells with our organelle glue (ORGL) technique, which is based on reconstitution of a split fluorescent protein. We simultaneously targeted N-terminal and C-terminal fragments of a fluorescent protein to the chloroplast outer envelope membrane or cytosol, respectively, which induced chloroplast-chloroplast interactions. The cytosolic C-terminal fragment likely functions as a bridge between two N-terminal fragments, thereby bringing the chloroplasts in close proximity to interact. We modulated the frequency of chloroplast-chloroplast interactions by altering the ratio of N- and C-terminal fragments. We conclude that the ORGL technique can successfully control chloroplast-chloroplast interactions in plants, providing a proof of concept for the artificial regulation of organelle interactions in living cells.
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Affiliation(s)
- Shintaro Ichikawa
- Center
for Bioscience Research and Education, Utsunomiya
University, Tochigi 321-8505, Japan,Graduate
School of Regional Development and Creativity, Utsunomiya University, Tochigi 321-8505, Japan
| | - Shota Kato
- Center
for Bioscience Research and Education, Utsunomiya
University, Tochigi 321-8505, Japan
| | - Yuta Fujii
- Center
for Bioscience Research and Education, Utsunomiya
University, Tochigi 321-8505, Japan
| | - Kazuya Ishikawa
- Center
for Bioscience Research and Education, Utsunomiya
University, Tochigi 321-8505, Japan
| | - Keiji Numata
- Department
of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan,Biomacromolecules
Research Team, Center for Sustainable Resource
Science, RIKEN, Saitama 351-0198, Japan
| | - Yutaka Kodama
- Center
for Bioscience Research and Education, Utsunomiya
University, Tochigi 321-8505, Japan,Graduate
School of Regional Development and Creativity, Utsunomiya University, Tochigi 321-8505, Japan,Biomacromolecules
Research Team, Center for Sustainable Resource
Science, RIKEN, Saitama 351-0198, Japan,
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17
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Bowman JL, Arteaga-Vazquez M, Berger F, Briginshaw LN, Carella P, Aguilar-Cruz A, Davies KM, Dierschke T, Dolan L, Dorantes-Acosta AE, Fisher TJ, Flores-Sandoval E, Futagami K, Ishizaki K, Jibran R, Kanazawa T, Kato H, Kohchi T, Levins J, Lin SS, Nakagami H, Nishihama R, Romani F, Schornack S, Tanizawa Y, Tsuzuki M, Ueda T, Watanabe Y, Yamato KT, Zachgo S. The renaissance and enlightenment of Marchantia as a model system. THE PLANT CELL 2022; 34:3512-3542. [PMID: 35976122 PMCID: PMC9516144 DOI: 10.1093/plcell/koac219] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 06/21/2022] [Indexed: 05/07/2023]
Abstract
The liverwort Marchantia polymorpha has been utilized as a model for biological studies since the 18th century. In the past few decades, there has been a Renaissance in its utilization in genomic and genetic approaches to investigating physiological, developmental, and evolutionary aspects of land plant biology. The reasons for its adoption are similar to those of other genetic models, e.g. simple cultivation, ready access via its worldwide distribution, ease of crossing, facile genetics, and more recently, efficient transformation, genome editing, and genomic resources. The haploid gametophyte dominant life cycle of M. polymorpha is conducive to forward genetic approaches. The lack of ancient whole-genome duplications within liverworts facilitates reverse genetic approaches, and possibly related to this genomic stability, liverworts possess sex chromosomes that evolved in the ancestral liverwort. As a representative of one of the three bryophyte lineages, its phylogenetic position allows comparative approaches to provide insights into ancestral land plants. Given the karyotype and genome stability within liverworts, the resources developed for M. polymorpha have facilitated the development of related species as models for biological processes lacking in M. polymorpha.
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Affiliation(s)
| | - Mario Arteaga-Vazquez
- Instituto de Biotecnología y Ecología Aplicada, Universidad Veracruzana, Xalapa VER 91090, México
| | - Frederic Berger
- Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC), Vienna 1030, Austria
| | - Liam N Briginshaw
- School of Biological Sciences, Monash University, Melbourne VIC 3800, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, Monash University, Melbourne VIC 3800, Australia
| | - Philip Carella
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK
| | - Adolfo Aguilar-Cruz
- Instituto de Biotecnología y Ecología Aplicada, Universidad Veracruzana, Xalapa VER 91090, México
| | - Kevin M Davies
- The New Zealand Institute for Plant and Food Research Limited, Palmerston North 4442, New Zealand
| | - Tom Dierschke
- School of Biological Sciences, Monash University, Melbourne VIC 3800, Australia
| | - Liam Dolan
- Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC), Vienna 1030, Austria
| | - Ana E Dorantes-Acosta
- Instituto de Biotecnología y Ecología Aplicada, Universidad Veracruzana, Xalapa VER 91090, México
| | - Tom J Fisher
- School of Biological Sciences, Monash University, Melbourne VIC 3800, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, Monash University, Melbourne VIC 3800, Australia
| | - Eduardo Flores-Sandoval
- School of Biological Sciences, Monash University, Melbourne VIC 3800, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, Monash University, Melbourne VIC 3800, Australia
| | - Kazutaka Futagami
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
| | | | - Rubina Jibran
- The New Zealand Institute for Plant & Food Research Limited, Auckland 1142, New Zealand
| | - Takehiko Kanazawa
- Division of Cellular Dynamics, National Institute for Basic Biology, Myodaiji, Okazaki, Aichi 444-8585, Japan
- The Department of Basic Biology, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi 444-8585, Japan
| | - Hirotaka Kato
- Graduate School of Science, Kobe University, Kobe 657-8501, Japan
- Graduate School of Science and Engineering, Ehime University, Matsuyama, Ehime 790-8577, Japan
| | - Takayuki Kohchi
- Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan
| | - Jonathan Levins
- School of Biological Sciences, Monash University, Melbourne VIC 3800, Australia
| | - Shih-Shun Lin
- Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan
| | - Hirofumi Nakagami
- Basic Immune System of Plants, Max-Planck Institute for Plant Breeding Research, 50829 Cologne, Germany
| | - Ryuichi Nishihama
- Department of Applied Biological Science, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Facundo Romani
- Department of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, UK
| | | | - Yasuhiro Tanizawa
- Department of Informatics, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan
| | - Masayuki Tsuzuki
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
| | - Takashi Ueda
- Division of Cellular Dynamics, National Institute for Basic Biology, Myodaiji, Okazaki, Aichi 444-8585, Japan
- The Department of Basic Biology, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi 444-8585, Japan
| | - Yuichiro Watanabe
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
| | - Katsuyuki T Yamato
- Faculty of Biology-Oriented Science and Technology, Kindai University, Kinokawa, Wakayama 649-6493, Japan
| | - Sabine Zachgo
- Division of Botany, School of Biology and Chemistry, Osnabrück University, Osnabrück 49076, Germany
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18
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Odahara M, Horii Y, Itami J, Watanabe K, Numata K. Functional peptide-mediated plastid transformation in tobacco, rice, and kenaf. FRONTIERS IN PLANT SCIENCE 2022; 13:989310. [PMID: 36212290 PMCID: PMC9539840 DOI: 10.3389/fpls.2022.989310] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 09/08/2022] [Indexed: 05/28/2023]
Abstract
In plant engineering, plastid transformation is more advantageous than nuclear transformation because it results in high levels of protein expression from multiple genome copies per cell and is unaffected by gene silencing. The common plastid transformation methods are biolistic bombardment that requires special instruments and PEG-mediated transformation that is only applicable to protoplast cells. Here, we aimed to establish a new plastid transformation method in tobacco, rice, and kenaf using a biocompatible fusion peptide as a carrier to deliver DNA into plastids. We used a fusion peptide, KH-AtOEP34, comprising a polycationic DNA-binding peptide (KH) and a plastid-targeting peptide (AtOEP34) to successfully deliver and integrate construct DNA into plastid DNA (ptDNA) via homologous recombination. We obtained transformants in each species using selection with spectinomycin/streptomycin and the corresponding resistance gene aadA. The constructs remained in ptDNA for several months after introduction even under non-selective condition. The transformants normally flowered and are fertile in most cases. The offspring of the transformants (the T1 generation) retained the integrated construct DNA in their ptDNA, as indicated by PCR and DNA blotting, and expressed GFP in plastids from the integrated construct DNA. In summary, we successfully used the fusion peptide method for integration of foreign DNA in tobacco, rice, and kenaf ptDNA, and the integrated DNA was transmitted to the next generations. Whereas optimization is necessary to obtain homoplasmic plastid transformants that enable stable heterologous expression of genes, the plastid transformation method shown here is a novel nanomaterial-based approach distinct from the conventional methods, and we propose that this easy method could be used to target a wide variety of plants.
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Affiliation(s)
- Masaki Odahara
- Biomacromolecule Research Team, RIKEN Center for Sustainable Resource Science, Wako, Japan
| | - Yoko Horii
- Biomacromolecule Research Team, RIKEN Center for Sustainable Resource Science, Wako, Japan
| | - Jun Itami
- Biomacromolecule Research Team, RIKEN Center for Sustainable Resource Science, Wako, Japan
| | - Kenta Watanabe
- Biomacromolecule Research Team, RIKEN Center for Sustainable Resource Science, Wako, Japan
| | - Keiji Numata
- Biomacromolecule Research Team, RIKEN Center for Sustainable Resource Science, Wako, Japan
- Department of Material Chemistry, Kyoto University, Kyoto, Japan
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19
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Jiang X, Pees T, Reinhold-Hurek B. Deep-learning-based removal of autofluorescence and fluorescence quantification in plant-colonizing bacteria in vivo. THE NEW PHYTOLOGIST 2022; 235:2481-2495. [PMID: 35752974 DOI: 10.1111/nph.18344] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 06/19/2022] [Indexed: 06/15/2023]
Abstract
Fluorescence microscopy is common in bacteria-plant interaction studies. However, strong autofluorescence from plant tissues impedes in vivo studies on endophytes tagged with fluorescent proteins. To solve this problem, we developed a deep-learning-based approach to eliminate plant autofluorescence from fluorescence microscopy images, tested for the model endophyte Azoarcus olearius BH72 colonizing Oryza sativa roots. Micrographs from three channels (tdTomato for gene expression, green fluorescent protein (GFP) and AutoFluorescence (AF)) were processed by a neural network based approach, generating images that simulate the background autofluorescence in the tdTomato channel. After subtracting the model-generated signals from each pixel in the genuine channel, the autofluorescence in the tdTomato channel was greatly reduced or even removed. The deep-learning-based approach can be applied for fluorescence detection and quantification, exemplified by a weakly expressed, a cell-density modulated and a nitrogen-fixation gene in A. olearius. A transcriptional nifH::tdTomato fusion demonstrated stronger induction of nif genes inside roots than outside, suggesting extension of the rhizosphere effect for diazotrophs into the endorhizosphere. The pre-trained convolutional neural network model is easily applied to process other images of the same plant tissues with the same settings. This study showed the high potential of deep-learning-based approaches in image processing. With proper training data and strategies, autofluorescence in other tissues or materials can be removed for broad applications.
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Affiliation(s)
- Xun Jiang
- Department of Microbe-Plant Interactions, CBIB Center for Biomolecular Interactions, Faculty of Biology and Chemistry, University of Bremen, PO Box 33 04 40, D-28334, Bremen, Germany
| | - Tobias Pees
- Department of Microbe-Plant Interactions, CBIB Center for Biomolecular Interactions, Faculty of Biology and Chemistry, University of Bremen, PO Box 33 04 40, D-28334, Bremen, Germany
| | - Barbara Reinhold-Hurek
- Department of Microbe-Plant Interactions, CBIB Center for Biomolecular Interactions, Faculty of Biology and Chemistry, University of Bremen, PO Box 33 04 40, D-28334, Bremen, Germany
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20
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Miyamoto T, Tsuchiya K, Toyooka K, Goto Y, Tateishi A, Numata K. Relaxation of the Plant Cell Wall Barrier via Zwitterionic Liquid Pretreatment for Micelle-Complex-Mediated DNA Delivery to Specific Plant Organelles. Angew Chem Int Ed Engl 2022; 61:e202204234. [PMID: 35670289 PMCID: PMC9401069 DOI: 10.1002/anie.202204234] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Indexed: 11/12/2022]
Abstract
Targeted delivery of genes to specific plant organelles is a key challenge for fundamental plant science, plant bioengineering, and agronomic applications. Nanoscale carriers have attracted interest as a promising tool for organelle‐targeted DNA delivery in plants. However, nanocarrier‐mediated DNA delivery in plants is severely hampered by the barrier of the plant cell wall, resulting in insufficient delivery efficiency. Herein, we propose a unique strategy that synergistically combines a cell wall‐loosening zwitterionic liquid (ZIL) with a peptide‐displaying micelle complex for organelle‐specific DNA delivery in plants. We demonstrated that ZIL pretreatment can enhance cell wall permeability without cytotoxicity, allowing micelle complexes to translocate across the cell wall and carry DNA cargo into specific plant organelles, such as nuclei and chloroplasts, with significantly augmented efficiency. Our work offers a novel concept to overcome the plant cell wall barrier for nanocarrier‐mediated cargo delivery to specific organelles in living plants.
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Affiliation(s)
- Takaaki Miyamoto
- Biomacromolecules Research TeamRIKEN Center for Sustainable Resource ScienceSaitama351-0198Japan
| | - Kousuke Tsuchiya
- Department of Material ChemistryGraduate School of EngineeringKyoto University Kyoto-Daigaku-Katsura, Nishikyo-kuKyoto615-8510Japan
| | - Kiminori Toyooka
- Technology Platform DivisionMass Spectrometry and Microscopy UnitRIKEN Center for Sustainable Resource ScienceYokohama230-0045Japan
| | - Yumi Goto
- Technology Platform DivisionMass Spectrometry and Microscopy UnitRIKEN Center for Sustainable Resource ScienceYokohama230-0045Japan
| | - Ayaka Tateishi
- Department of Material ChemistryGraduate School of EngineeringKyoto University Kyoto-Daigaku-Katsura, Nishikyo-kuKyoto615-8510Japan
| | - Keiji Numata
- Biomacromolecules Research TeamRIKEN Center for Sustainable Resource ScienceSaitama351-0198Japan
- Department of Material ChemistryGraduate School of EngineeringKyoto University Kyoto-Daigaku-Katsura, Nishikyo-kuKyoto615-8510Japan
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21
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Ishikawa K, Konno R, Hirano S, Fujii Y, Fujiwara M, Fukao Y, Kodama Y. The endoplasmic reticulum membrane-bending protein RETICULON facilitates chloroplast relocation movement in Marchantia polymorpha. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:205-216. [PMID: 35476214 DOI: 10.1111/tpj.15787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/18/2022] [Accepted: 04/22/2022] [Indexed: 06/14/2023]
Abstract
Plant cells alter the intracellular positions of chloroplasts to ensure efficient photosynthesis, a process controlled by the blue light receptor phototropin. Chloroplasts migrate toward weak light (accumulation response) and move away from excess light (avoidance response). Chloroplasts are encircled by the endoplasmic reticulum (ER), which forms a complex network throughout the cytoplasm. To ensure rapid chloroplast relocation, the ER must alter its structure in conjunction with chloroplast relocation movement, but little is known about the underlying mechanism. Here, we searched for interactors of phototropin in the liverwort Marchantia polymorpha and identified a RETICULON (RTN) family protein; RTN proteins play central roles in ER tubule formation and ER network maintenance by stabilizing the curvature of ER membranes in eukaryotic cells. Marchantia polymorpha RTN1 (MpRTN1) is localized to ER tubules and the rims of ER sheets, which is consistent with the localization of RTNs in other plants and heterotrophs. The Mprtn1 mutant showed an increased ER tubule diameter, pointing to a role for MpRTN1 in ER membrane constriction. Furthermore, Mprtn1 showed a delayed chloroplast avoidance response but a normal chloroplast accumulation response. The live cell imaging of ER dynamics revealed that ER restructuring was impaired in Mprtn1 during the chloroplast avoidance response. These results suggest that during the chloroplast avoidance response, MpRTN1 restructures the ER network and facilitates chloroplast movement via an interaction with phototropin. Our findings provide evidence that plant cells respond to fluctuating environmental conditions by controlling the movements of multiple organelles in a synchronized manner.
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Affiliation(s)
- Kazuya Ishikawa
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
| | - Ryota Konno
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
| | - Satoyuki Hirano
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
| | - Yuta Fujii
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
| | - Masayuki Fujiwara
- Plant Global Education Project, Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara, Japan
- YANMAR HOLDINGS Co. Ltd., Osaka, Japan
| | - Yoichiro Fukao
- Plant Global Education Project, Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara, Japan
- Department of Bioinformatics, College of Life Sciences, Ritsumeikan University, Shiga, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
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22
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Miyamoto T, Tsuchiya K, Toyooka K, Goto Y, Tateishi A, Numata K. Relaxation of the Plant Cell Wall Barrier via Zwitterionic Liquid Pretreatment for Micelle‐Complex‐Mediated DNA Delivery to Specific Plant Organelles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Takaaki Miyamoto
- Biomacromolecules Research Team RIKEN Center for Sustainable Resource Science Saitama 351-0198 Japan
| | - Kousuke Tsuchiya
- Department of Material Chemistry Graduate School of Engineering Kyoto University Kyoto-Daigaku-Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Kiminori Toyooka
- Technology Platform Division Mass Spectrometry and Microscopy Unit RIKEN Center for Sustainable Resource Science Yokohama 230-0045 Japan
| | - Yumi Goto
- Technology Platform Division Mass Spectrometry and Microscopy Unit RIKEN Center for Sustainable Resource Science Yokohama 230-0045 Japan
| | - Ayaka Tateishi
- Department of Material Chemistry Graduate School of Engineering Kyoto University Kyoto-Daigaku-Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Keiji Numata
- Biomacromolecules Research Team RIKEN Center for Sustainable Resource Science Saitama 351-0198 Japan
- Department of Material Chemistry Graduate School of Engineering Kyoto University Kyoto-Daigaku-Katsura, Nishikyo-ku Kyoto 615-8510 Japan
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23
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Noguchi M, Kodama Y. Temperature Sensing in Plants: On the Dawn of Molecular Thermosensor Research. PLANT & CELL PHYSIOLOGY 2022; 63:737-743. [PMID: 35348773 DOI: 10.1093/pcp/pcac033] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 03/05/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Although many studies on plant growth and development focus on the effects of light, a growing number of studies dissect plant responses to temperature and the underlying signaling pathways. The identity of plant thermosensing molecules (thermosensors) acting upstream of the signaling cascades in temperature responses was elusive until recently. During the past six years, a set of plant thermosensors has been discovered, representing a major turning point in the research on plant temperature responses and signaling. Here, we review these newly discovered plant thermosensors, which can be classified as sensors of warmth or cold. We compare between plant thermosensors and those from other organisms and attempt to define the subcellular thermosensing compartments in plants. In addition, we discuss the notion that photoreceptive thermosensors represent a novel class of thermosensors, the roles of which have yet to be described in non-plant systems.
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Affiliation(s)
- Minoru Noguchi
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, 321-8505 Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Tochigi, 321-8505 Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, 321-8505 Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Tochigi, 321-8505 Japan
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24
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Khoshravesh R, Hoffmann N, Hanson DT. Leaf microscopy applications in photosynthesis research: identifying the gaps. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:1868-1893. [PMID: 34986250 DOI: 10.1093/jxb/erab548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
Leaf imaging via microscopy has provided critical insights into research on photosynthesis at multiple junctures, from the early understanding of the role of stomata, through elucidating C4 photosynthesis via Kranz anatomy and chloroplast arrangement in single cells, to detailed explorations of diffusion pathways and light utilization gradients within leaves. In recent decades, the original two-dimensional (2D) explorations have begun to be visualized in three-dimensional (3D) space, revising our understanding of structure-function relationships between internal leaf anatomy and photosynthesis. In particular, advancing new technologies and analyses are providing fresh insight into the relationship between leaf cellular components and improving the ability to model net carbon fixation, water use efficiency, and metabolite turnover rate in leaves. While ground-breaking developments in imaging tools and techniques have expanded our knowledge of leaf 3D structure via high-resolution 3D and time-series images, there is a growing need for more in vivo imaging as well as metabolite imaging. However, these advances necessitate further improvement in microscopy sciences to overcome the unique challenges a green leaf poses. In this review, we discuss the available tools, techniques, challenges, and gaps for efficient in vivo leaf 3D imaging, as well as innovations to overcome these difficulties.
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Affiliation(s)
| | - Natalie Hoffmann
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - David T Hanson
- Department of Biology, University of New Mexico, Albuquerque, NM, USA
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25
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Hirano S, Sasaki K, Osaki Y, Tahara K, Takahashi H, Takemiya A, Kodama Y. The localization of phototropin to the plasma membrane defines a cold-sensing compartment in Marchantia polymorpha. PNAS NEXUS 2022; 1:pgac030. [PMID: 36713324 PMCID: PMC9802274 DOI: 10.1093/pnasnexus/pgac030] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 02/13/2022] [Accepted: 03/29/2022] [Indexed: 02/01/2023]
Abstract
Plant cells perceive cold temperatures and initiate cellular responses to protect themselves against cold stress, but which cellular compartment mediates cold sensing has been unknown. Chloroplasts change their position in response to cold to optimize photosynthesis in plants in a process triggered by the blue-light photoreceptor phototropin (phot), which thus acts as a cold-sensing molecule. However, phot in plant cells is present in multiple cellular compartments, including the plasma membrane (PM), cytosol, Golgi apparatus, and chloroplast periphery, making it unclear where phot perceives cold and activates this cold-avoidance response. Here, we produced genetically encoded and modified variants of phot that localize only to the cytosol or the PM and determined that only PM-associated phot-induced cold avoidance in the liverwort Marchantia polymorpha. These results indicate that the phot localized to the PM constitutes a cellular compartment for cold sensing in plants.
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Affiliation(s)
| | | | | | - Kyoka Tahara
- Department of Biology, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 753-8512 Yamaguchi, Japan
| | - Hitomi Takahashi
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
| | - Atsushi Takemiya
- Department of Biology, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 753-8512 Yamaguchi, Japan
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26
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Bao L, Inoue N, Ishikawa M, Gotoh E, Teh OK, Higa T, Morimoto T, Ginanjar EF, Harashima H, Noda N, Watahiki M, Hiwatashi Y, Sekine M, Hasebe M, Wada M, Fujita T. A PSTAIRE-type cyclin-dependent kinase controls light responses in land plants. SCIENCE ADVANCES 2022; 8:eabk2116. [PMID: 35089781 PMCID: PMC8797184 DOI: 10.1126/sciadv.abk2116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
Light is a critical signal perceived by plants to adapt their growth rate and direction. Although many signaling components have been studied, how plants respond to constantly fluctuating light remains underexplored. Here, we showed that in the moss Physcomitrium (Physcomitrella) patens, the PSTAIRE-type cyclin-dependent kinase PpCDKA is dispensable for growth. Instead, PpCDKA and its homolog in Arabidopsis thaliana control light-induced tropisms and chloroplast movements by probably influencing the cytoskeleton organization independently of the cell cycle. In addition, lower PpCDKA kinase activity was required to elicit light responses relative to cell cycle regulation. Thus, our study suggests that plant CDKAs may have been co-opted to control multiple light responses, and owing to the bistable switch properties of PSTAIRE-type CDKs, the noncanonical functions are widely conserved for eukaryotic environmental adaptation.
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Affiliation(s)
- Liang Bao
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Natsumi Inoue
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Masaki Ishikawa
- Division of Evolutionary Biology, National Institute for Basic Biology, Okazaki 444-8585, Japan
- School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), Okazaki 444-8585, Japan
| | - Eiji Gotoh
- Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Ooi-Kock Teh
- Institute for the Advancement of Higher Education, Hokkaido University, Sapporo 060-0817, Japan
| | - Takeshi Higa
- Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan
| | - Tomoro Morimoto
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan
| | | | - Hirofumi Harashima
- Cell Function Research Team, RIKEN Centre for Sustainable Resource Science, Yokohama 230-0045, Japan
| | - Natsumi Noda
- Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Masaaki Watahiki
- Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Yuji Hiwatashi
- School of Food Industrial Sciences, Miyagi University, Sendai 982-0215, Japan
| | - Masami Sekine
- Faculty of Bioresources and Environmental Sciences, Ishikawa Prefectural University, Nonoichi 921-8836, Japan
| | - Mitsuyasu Hasebe
- Division of Evolutionary Biology, National Institute for Basic Biology, Okazaki 444-8585, Japan
- School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), Okazaki 444-8585, Japan
| | - Masamitsu Wada
- Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan
| | - Tomomichi Fujita
- Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
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27
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Miyamoto T, Toyooka K, Chuah JA, Odahara M, Higchi-Takeuchi M, Goto Y, Motoda Y, Kigawa T, Kodama Y, Numata K. A Synthetic Multidomain Peptide That Drives a Macropinocytosis-Like Mechanism for Cytosolic Transport of Exogenous Proteins into Plants. JACS AU 2022; 2:223-233. [PMID: 35098239 PMCID: PMC8790739 DOI: 10.1021/jacsau.1c00504] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Indexed: 05/28/2023]
Abstract
Direct delivery of proteins into plants represents a promising alternative to conventional gene delivery for probing and modulating cellular functions without the risk of random integration of transgenes into the host genome. This remains challenging, however, because of the lack of a protein delivery tool applicable to diverse plant species and the limited information about the entry mechanisms of exogenous proteins in plant cells. Here, we present the synthetic multidomain peptide (named dTat-Sar-EED4) for cytosolic protein delivery in various plant species via simple peptide-protein coincubation. dTat-Sar-EED4 enabled the cytosolic delivery of an active enzyme with up to ∼20-fold greater efficiency than previously described cell-penetrating peptides in several model plant systems. Our analyses using pharmacological inhibitors and transmission electron microscopy revealed that dTat-Sar-EED4 triggered a unique endocytic mechanism for cargo protein internalization. This endocytic mechanism shares several features with macropinocytosis, including the dependency of actin polymerization, sensitivity to phosphatidylinositol-3 kinase activity, and formation of membrane protrusions and large intracellular vesicles (>200 nm in diameter), even though macropinocytosis has not been identified to date in plants. Our study thus presents a robust molecular tool that can induce a unique cellular uptake mechanism for the efficient transport of bioactive proteins into plants.
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Affiliation(s)
- Takaaki Miyamoto
- Biomacromolecules
Research Team, RIKEN Center for Sustainable Resource Science, Saitama 351-0198, Japan
| | - Kiminori Toyooka
- Technology
Platform Division, Mass Spectrometry and Microscopy Unit, RIKEN Center
for Sustainable Resource Science, Yokohama 230-0045, Japan
| | - Jo-Ann Chuah
- Biomacromolecules
Research Team, RIKEN Center for Sustainable Resource Science, Saitama 351-0198, Japan
| | - Masaki Odahara
- Biomacromolecules
Research Team, RIKEN Center for Sustainable Resource Science, Saitama 351-0198, Japan
| | - Mieko Higchi-Takeuchi
- Biomacromolecules
Research Team, RIKEN Center for Sustainable Resource Science, Saitama 351-0198, Japan
| | - Yumi Goto
- Technology
Platform Division, Mass Spectrometry and Microscopy Unit, RIKEN Center
for Sustainable Resource Science, Yokohama 230-0045, Japan
| | - Yoko Motoda
- Biomacromolecules
Research Team, RIKEN Center for Sustainable Resource Science, Saitama 351-0198, Japan
- Laboratory
for Cellular Structural Biology, RIKEN Center for Biosystems Dynamics
Research, Yokohama 230-0045, Japan
| | - Takanori Kigawa
- Laboratory
for Cellular Structural Biology, RIKEN Center for Biosystems Dynamics
Research, Yokohama 230-0045, Japan
| | - Yutaka Kodama
- Biomacromolecules
Research Team, RIKEN Center for Sustainable Resource Science, Saitama 351-0198, Japan
- Center
for Bioscience Research and Education, Utsunomiya
University, Tochigi 321-8505, Japan
| | - Keiji Numata
- Biomacromolecules
Research Team, RIKEN Center for Sustainable Resource Science, Saitama 351-0198, Japan
- Department
of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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28
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Ruberti C. Mitochondrial GFP-Tagged Protein Localization Using Transient Transformations in Arabidopsis thaliana. Methods Mol Biol 2022; 2363:153-163. [PMID: 34545492 DOI: 10.1007/978-1-0716-1653-6_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Transient transformation assays for the analysis of protein localization are routinely used as rapid and convenient alternatives to stable transformation. In this chapter, we describe two transient gene expression assays (e.g., isolation and transformation of protoplasts, and agroinfiltration of leaves) optimized for Arabidopsis thaliana, and we combine them with fluorescence microscopy, with the final aim to investigate in vivo the subcellular localization of a mitochondrial protein of interest fused to a fluorescent reporter.
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Affiliation(s)
- Cristina Ruberti
- Department of Biology, University of Padua, Padua, Italy.
- Department of Biosciences, University of Milan, Milan, Italy.
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29
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Tamaki S, Sato R, Koshitsuka Y, Asahina M, Kodama Y, Ishikawa T, Shinomura T. Suppression of the Lycopene Cyclase Gene Causes Downregulation of Ascorbate Peroxidase Activity and Decreased Glutathione Pool Size, Leading to H 2O 2 Accumulation in Euglena gracilis. FRONTIERS IN PLANT SCIENCE 2021; 12:786208. [PMID: 34925426 PMCID: PMC8678482 DOI: 10.3389/fpls.2021.786208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/11/2021] [Indexed: 06/02/2023]
Abstract
Carotenoids are photosynthetic pigments and hydrophobic antioxidants that are necessary for the survival of photosynthetic organisms, including the microalga Euglena gracilis. In the present study, we identified an uncharacterized gene encoding the E. gracilis β-carotene synthetic enzyme lycopene cyclase (EgLCY) and discovered a relationship between EgLCY-mediated carotenoid synthesis and the reactive oxygen species (ROS) scavenging system ascorbate-glutathione cycle. The EgLCY cDNA sequence was obtained via homology searching E. gracilis transcriptome data. An enzyme assay using Escherichia coli demonstrated that EgLCY converts lycopene to β-carotene. E. gracilis treated with EgLCY double-stranded RNA (dsRNA) produced colorless cells with hypertrophic appearance, inhibited growth, and marked decrease in carotenoid and chlorophyll content, suggesting that EgLCY is essential for the synthesis of β-carotene and downstream carotenoids, which are abundant and physiologically functional. In EgLCY dsRNA-treated cells, the ascorbate-glutathione cycle, composed of ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR), monodehydroascorbate reductase (MDAR), and glutathione reductase (GR), was unusually modulated; APX and GR activities significantly decreased, whereas DHAR and MDAR activities increased. Ascorbate content was significantly increased and glutathione content significantly decreased in EgLCY dsRNA-treated cells and was correlated with their recycling enzyme activities. Fluorescent imaging demonstrated that EgLCY dsRNA-treated cells accumulated higher levels of H2O2 compared to wild-type cells. Taken together, this study revealed that EgLCY-mediated synthesis of β-carotene and downstream carotenoid species upregulates APX activity and increases glutathione pool size for H2O2 scavenging. Our study suggests a possible relationship between carotenoid synthesis and the ascorbate-glutathione cycle for ROS scavenging in E. gracilis.
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Affiliation(s)
- Shun Tamaki
- Department of Biosciences, School of Science and Engineering, Teikyo University, Tochigi, Japan
| | - Ryosuke Sato
- Department of Biosciences, School of Science and Engineering, Teikyo University, Tochigi, Japan
| | - Yuki Koshitsuka
- Department of Biosciences, School of Science and Engineering, Teikyo University, Tochigi, Japan
| | - Masashi Asahina
- Department of Biosciences, School of Science and Engineering, Teikyo University, Tochigi, Japan
- Advanced Instrumental Analysis Center, Teikyo University, Tochigi, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
| | - Takahiro Ishikawa
- Institute of Agricultural and Life Sciences, Academic Assembly, Shimane University, Matsue, Japan
| | - Tomoko Shinomura
- Department of Biosciences, School of Science and Engineering, Teikyo University, Tochigi, Japan
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30
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Yokawa K, Kodama Y. A green light-excitable FRET system for monitoring intracellular calcium levels in plant cells. PLANT SIGNALING & BEHAVIOR 2021; 16:1963104. [PMID: 34353232 PMCID: PMC8525944 DOI: 10.1080/15592324.2021.1963104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 06/13/2023]
Abstract
CFP/YFP-paired FRET is routinely used to estimate intracellular Ca2+ concentrations in vivo. This system, however, is excited with blue light, which is likely to invoke unexpected responses in plant cells. This report describes a new green light-excitable FRET system with an mKO2/mCherry pair. Plant cells expressing this newly constructed FRET system demonstrated its ability to monitor changes in cytosolic free calcium concentration. The new system is likely to find applications in studies of plant cells where undesirable blue light responses must be avoided.
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Affiliation(s)
- Ken Yokawa
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- Department of Engineering, Kitami Institute of Technology, Kitami, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
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31
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Wijerathna-Yapa A, Signorelli S, Fenske R, Ganguly DR, Stroeher E, Li L, Pogson BJ, Duncan O, Millar AH. Autophagy mutants show delayed chloroplast development during de-etiolation in carbon limiting conditions. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 108:459-477. [PMID: 34365695 DOI: 10.1111/tpj.15452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/30/2021] [Accepted: 08/04/2021] [Indexed: 06/13/2023]
Abstract
Autophagy is a conserved catabolic process that plays an essential role under nutrient starvation conditions and influences different developmental processes. We observed that seedlings of autophagy mutants (atg2, atg5, atg7, and atg9) germinated in the dark showed delayed chloroplast development following illumination. The delayed chloroplast development was characterized by a decrease in photosynthetic and chlorophyll biosynthetic proteins, lower chlorophyll content, reduced chloroplast size, and increased levels of proteins involved in lipid biosynthesis. Confirming the biological impact of these differences, photosynthetic performance was impaired in autophagy mutants 12 h post-illumination. We observed that while gene expression for photosynthetic machinery during de-etiolation was largely unaffected in atg mutants, several genes involved in photosystem assembly were transcriptionally downregulated. We also investigated if the delayed chloroplast development could be explained by lower lipid import to the chloroplast or lower triglyceride (TAG) turnover. We observed that the limitations in the chloroplast lipid import imposed by trigalactosyldiacylglycerol1 are unlikely to explain the delay in chloroplast development. However, we found that lower TAG mobility in the triacylglycerol lipase mutant sugardependent1 significantly affected de-etiolation. Moreover, we showed that lower levels of carbon resources exacerbated the slow greening phenotype whereas higher levels of carbon resources had an opposite effect. This work suggests a lack of autophagy machinery limits chloroplast development during de-etiolation, and this is exacerbated by limited lipid turnover (lipophagy) that physically or energetically restrains chloroplast development.
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Affiliation(s)
- Akila Wijerathna-Yapa
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
| | - Santiago Signorelli
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
- Laboratorio de Bioquímica, Departamento de Biología Vegetal, Facultad de Agronomía, Universidad de la República, Uruguay
| | - Ricarda Fenske
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
| | - Diep R Ganguly
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, The Australian National University, Canberra, ACT, Australia
| | - Elke Stroeher
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
| | - Lei Li
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
- Department of Plant Biology and Ecology, College of Life Sciences, Nankai University, 300071, Tianjin, PR China
| | - Barry J Pogson
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, The Australian National University, Canberra, ACT, Australia
| | - Owen Duncan
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
| | - A Harvey Millar
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Science, The University of Western Australia, 6009, Crawley, WA, Australia
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32
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Out-of-Phase Imaging after Optical Modulation (OPIOM) for Multiplexed Fluorescence Imaging Under Adverse Optical Conditions. Methods Mol Biol 2021; 2350:191-227. [PMID: 34331287 DOI: 10.1007/978-1-0716-1593-5_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Fluorescence imaging has become a powerful tool for observations in biology. Yet it has also encountered limitations to overcome optical interferences of ambient light, autofluorescence, and spectrally interfering fluorophores. In this account, we first examine the current approaches which address these limitations. Then we more specifically report on Out-of-Phase Imaging after Optical Modulation (OPIOM), which has proved attractive for highly selective multiplexed fluorescence imaging even under adverse optical conditions. After exposing the OPIOM principle, we detail the protocols for successful OPIOM implementation.
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33
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DeVree BT, Steiner LM, Głazowska S, Ruhnow F, Herburger K, Persson S, Mravec J. Current and future advances in fluorescence-based visualization of plant cell wall components and cell wall biosynthetic machineries. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:78. [PMID: 33781321 PMCID: PMC8008654 DOI: 10.1186/s13068-021-01922-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 03/05/2021] [Indexed: 05/18/2023]
Abstract
Plant cell wall-derived biomass serves as a renewable source of energy and materials with increasing importance. The cell walls are biomacromolecular assemblies defined by a fine arrangement of different classes of polysaccharides, proteoglycans, and aromatic polymers and are one of the most complex structures in Nature. One of the most challenging tasks of cell biology and biomass biotechnology research is to image the structure and organization of this complex matrix, as well as to visualize the compartmentalized, multiplayer biosynthetic machineries that build the elaborate cell wall architecture. Better knowledge of the plant cells, cell walls, and whole tissue is essential for bioengineering efforts and for designing efficient strategies of industrial deconstruction of the cell wall-derived biomass and its saccharification. Cell wall-directed molecular probes and analysis by light microscopy, which is capable of imaging with a high level of specificity, little sample processing, and often in real time, are important tools to understand cell wall assemblies. This review provides a comprehensive overview about the possibilities for fluorescence label-based imaging techniques and a variety of probing methods, discussing both well-established and emerging tools. Examples of applications of these tools are provided. We also list and discuss the advantages and limitations of the methods. Specifically, we elaborate on what are the most important considerations when applying a particular technique for plants, the potential for future development, and how the plant cell wall field might be inspired by advances in the biomedical and general cell biology fields.
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Affiliation(s)
- Brian T DeVree
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark
| | - Lisa M Steiner
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark
| | - Sylwia Głazowska
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark
| | - Felix Ruhnow
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark
| | - Klaus Herburger
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark
| | - Staffan Persson
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark
- Joint International Research Laboratory of Metabolic and Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Jozef Mravec
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark
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Takahashi M, Tsuji N, Yazaki K, Sei Y, Obata M. A fluorescent calix[4]arene with naphthalene units at the upper rim exhibits long fluorescence emission lifetime without fluorescence quenching. RSC Adv 2021; 11:11651-11654. [PMID: 35423651 PMCID: PMC8695987 DOI: 10.1039/d1ra01743h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 03/17/2021] [Indexed: 11/21/2022] Open
Abstract
We synthesised a new compound with four naphthyl groups in the upper rims of calix[4]arene (1). Compared to the monomer unit, compound 1 has redshifted absorption and fluorescence, together with high fluorescence quantum yield and long fluorescence lifetime, which is extremely rare because long fluorescence lifetime emission tends to reduce the quantum yield. Single-crystal X-ray analysis and quantum calculations in the S1 state revealed π-π through-space interactions between naphthalene rings.
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Affiliation(s)
- Masaki Takahashi
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi 4-4-37 Takeda Kofu 400-8510 Japan
| | - Naoya Tsuji
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi 4-4-37 Takeda Kofu 400-8510 Japan
| | - Kohei Yazaki
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi 4-4-37 Takeda Kofu 400-8510 Japan
| | - Yoshihisa Sei
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Makoto Obata
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi 4-4-37 Takeda Kofu 400-8510 Japan
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Ximendes E, Benayas A, Jaque D, Marin R. Quo Vadis, Nanoparticle-Enabled In Vivo Fluorescence Imaging? ACS NANO 2021; 15:1917-1941. [PMID: 33465306 DOI: 10.1021/acsnano.0c08349] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The exciting advancements that we are currently witnessing in terms of novel materials and synthesis approaches are leading to the development of colloidal nanoparticles (NPs) with increasingly greater tunable properties. We have now reached a point where it is possible to synthesize colloidal NPs with functionalities tailored to specific societal demands. The impact of this new wave of colloidal NPs has been especially important in the field of biomedicine. In that vein, luminescent NPs with improved brightness and near-infrared working capabilities have turned out to be optimal optical probes that are capable of fast and high-resolution in vivo imaging. However, luminescent NPs have thus far only reached a limited portion of their potential. Although we believe that the best is yet to come, the future might not be as bright as some of us think (and have hoped!). In particular, translation of NP-based fluorescence imaging from preclinical studies to clinics is not straightforward. In this Perspective, we provide a critical assessment and highlight promising research avenues based on the latest advances in the fields of luminescent NPs and imaging technologies. The disillusioned outlook we proffer herein might sound pessimistic at first, but we consider it necessary to avoid pursuing "pipe dreams" and redirect the efforts toward achievable-yet ambitious-goals.
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Affiliation(s)
- Erving Ximendes
- Fluorescence Imaging Group, Departamento de Fısica de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid, C/Francisco Tomás y Valiente 7, Madrid 28049, Spain
- Nanobiology Group, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. Colmenar km. 9.100, Madrid 28034, Spain
| | - Antonio Benayas
- Fluorescence Imaging Group, Departamento de Fısica de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid, C/Francisco Tomás y Valiente 7, Madrid 28049, Spain
- Nanobiology Group, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. Colmenar km. 9.100, Madrid 28034, Spain
| | - Daniel Jaque
- Fluorescence Imaging Group, Departamento de Fısica de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid, C/Francisco Tomás y Valiente 7, Madrid 28049, Spain
- Nanobiology Group, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. Colmenar km. 9.100, Madrid 28034, Spain
| | - Riccardo Marin
- Fluorescence Imaging Group, Departamento de Fısica de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid, C/Francisco Tomás y Valiente 7, Madrid 28049, Spain
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36
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A natriuretic peptide from Arabidopsis thaliana (AtPNP-A) can modulate catalase 2 activity. Sci Rep 2020; 10:19632. [PMID: 33184368 PMCID: PMC7665192 DOI: 10.1038/s41598-020-76676-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 11/02/2020] [Indexed: 12/15/2022] Open
Abstract
Analogues of vertebrate natriuretic peptides (NPs) present in plants, termed plant natriuretic peptides (PNPs), comprise a novel class of hormones that systemically affect salt and water balance and responses to plant pathogens. Several lines of evidence indicate that Arabidopsis thaliana PNP (AtPNP-A) affects cellular redox homeostasis, which is also typical for the signaling of its vertebrate analogues, but the molecular mechanism(s) of this effect remains elusive. Here we report identification of catalase 2 (CAT2), an antioxidant enzyme, as an interactor of AtPNP-A. The full-length AtPNP-A recombinant protein and the biologically active fragment of AtPNP-A bind specifically to CAT2 in surface plasmon resonance (SPR) analyses, while a biologically inactive scrambled peptide does not. In vivo bimolecular fluorescence complementation (BiFC) showed that CAT2 interacts with AtPNP-A in chloroplasts. Furthermore, CAT2 activity is lower in homozygous atpnp-a knockdown compared with wild type plants, and atpnp-a knockdown plants phenocopy CAT2-deficient plants in their sensitivity to elevated H2O2, which is consistent with a direct modulatory effect of the PNP on the activity of CAT2 and hence H2O2 homeostasis. Our work underlines the critical role of AtPNP-A in modulating the activity of CAT2 and highlights a mechanism of fine-tuning plant responses to adverse conditions by PNPs.
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37
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Perroud PF, Demko V. Challenges of in vivo protein localization in plants seen through the DEK1 protein lens. PLANT SIGNALING & BEHAVIOR 2020; 15:1780404. [PMID: 32567469 PMCID: PMC8570728 DOI: 10.1080/15592324.2020.1780404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
During the last 25 y, fluorescent protein tagging has become a tool of choice to investigate protein function in a cellular context. The information gathered with this approach is not only providing insights into protein subcellular localization but also allows contextualizing protein function in multicellular settings. Here we illustrate the power of this method by commenting on the recent successful localization of the large membrane DEK1 protein during three-dimensional body formation in the moss Physcomitrella patens. But as many approaches, protein tagging is not exempt of caveats. The multiple infructuous (failed) attempts to detect DEK1 using a fluorescent protein tag present a good overview of such potential problems. Here we discuss the insertion of different fluorescent proteins at different positions in the PpDEK1 protein and the resulting unintended range of mutant phenotypes. Albeit none of these mutants generated a detectable fluorescent signal they can still provide interesting biological information about DEK1 function.
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Affiliation(s)
| | - Viktor Demko
- Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
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38
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Zhao Y, Antoniou-Kourounioti RL, Calder G, Dean C, Howard M. Temperature-dependent growth contributes to long-term cold sensing. Nature 2020; 583:825-829. [PMID: 32669706 PMCID: PMC7116785 DOI: 10.1038/s41586-020-2485-4] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 05/29/2020] [Indexed: 11/28/2022]
Abstract
Temperature is a key factor in the growth and development of all organisms1,2. Plants have to interpret temperature fluctuations, over hourly to monthly timescales, to align their growth and development with the seasons. Much is known about how plants respond to acute thermal stresses3,4, but the mechanisms that integrate long-term temperature exposure remain unknown. The slow, winter-long upregulation of VERNALIZATION INSENSITIVE 3 (VIN3)5-7, a PHD protein that functions with Polycomb repressive complex 2 to epigenetically silence FLOWERING LOCUS C (FLC) during vernalization, is central to plants interpreting winter progression5,6,8-11. Here, by a forward genetic screen, we identify two dominant mutations of the transcription factor NTL8 that constitutively activate VIN3 expression and alter the slow VIN3 cold induction profile. In the wild type, the NTL8 protein accumulates slowly in the cold, and directly upregulates VIN3 transcription. Through combining computational simulation and experimental validation, we show that a major contributor to this slow accumulation is reduced NTL8 dilution due to slow growth at low temperatures. Temperature-dependent growth is thus exploited through protein dilution to provide the long-term thermosensory information for VIN3 upregulation. Indirect mechanisms involving temperature-dependent growth, in addition to direct thermosensing, may be widely relevant in long-term biological sensing of naturally fluctuating temperatures.
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Affiliation(s)
- Yusheng Zhao
- John Innes Centre, Norwich Research Park, Norwich, UK
| | | | - Grant Calder
- John Innes Centre, Norwich Research Park, Norwich, UK
- Department of Biology, University of York, York, UK
| | - Caroline Dean
- John Innes Centre, Norwich Research Park, Norwich, UK.
| | - Martin Howard
- John Innes Centre, Norwich Research Park, Norwich, UK.
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39
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Kelemen Z, Zhang R, Gissot L, Chouket R, Bellec Y, Croquette V, Jullien L, Faure JD, Le Saux T. Dynamic Contrast for Plant Phenotyping. ACS OMEGA 2020; 5:15105-15114. [PMID: 32637783 PMCID: PMC7331089 DOI: 10.1021/acsomega.0c00957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
Noninvasiveness, minimal handling, and immediate response are favorable features of fluorescence readout for high-throughput phenotyping of labeled plants.Yet, remote fluorescence imaging may suffer from an autofluorescent background and artificial or natural ambient light. In this work, the latter limitations are overcome by adopting reversibly photoswitchable fluorescent proteins (RSFPs) as labels and Speed OPIOM (out-of-phase imaging after optical modulation), a fluorescence imaging protocol exploiting dynamic contrast. Speed OPIOM can efficiently distinguish the RSFP signal from autofluorescence and other spectrally interfering fluorescent reporters like GFP. It can quantitatively assess gene expressions, even when they are weak. It is as quantitative, sensitive, and robust in dark and bright light conditions. Eventually, it can be used to nondestructively record abiotic stress responses like water or iron limitations in real time at the level of individual plants and even of specific organs. Such Speed OPIOM validation could find numerous applications to identify plant lines in selection programs, design plants as environmental sensors, or ecologically monitor transgenic plants in the environment.
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Affiliation(s)
- Zsolt Kelemen
- Université
Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin, F-78000 Versailles, France
| | - Ruikang Zhang
- PASTEUR,
Département de chimie, École
normale supérieure, PSL University, SorbonneUniversité,
CNRS, 24, rue Lhomond, 75005 Paris, France
| | - Lionel Gissot
- Université
Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin, F-78000 Versailles, France
| | - Raja Chouket
- PASTEUR,
Département de chimie, École
normale supérieure, PSL University, SorbonneUniversité,
CNRS, 24, rue Lhomond, 75005 Paris, France
| | - Yannick Bellec
- Université
Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin, F-78000 Versailles, France
| | - Vincent Croquette
- Laboratoire
de Physique Statistique, École normale
supérieure, PSL Research University, Université de Paris,
Sorbonne Université, CNRS, 75005 Paris, France
- Institut
de biologie de l’École normale supérieure (IBENS), École normale supérieure, CNRS, INSERM,
PSL Research University, 75005 Paris, France
| | - Ludovic Jullien
- PASTEUR,
Département de chimie, École
normale supérieure, PSL University, SorbonneUniversité,
CNRS, 24, rue Lhomond, 75005 Paris, France
| | - Jean-Denis Faure
- Université
Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin, F-78000 Versailles, France
| | - Thomas Le Saux
- PASTEUR,
Département de chimie, École
normale supérieure, PSL University, SorbonneUniversité,
CNRS, 24, rue Lhomond, 75005 Paris, France
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40
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Fujii Y, Ogasawara Y, Takahashi Y, Sakata M, Noguchi M, Tamura S, Kodama Y. The cold-induced switch in direction of chloroplast relocation occurs independently of changes in endogenous phototropin levels. PLoS One 2020; 15:e0233302. [PMID: 32437457 PMCID: PMC7241815 DOI: 10.1371/journal.pone.0233302] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 05/02/2020] [Indexed: 02/06/2023] Open
Abstract
When exposed to fluctuating light intensity, chloroplasts move towards weak light (accumulation response), and away from strong light (avoidance response). In addition, cold treatment (5°C) induces the avoidance response even under weak-light conditions (cold-avoidance response). These three responses are mediated by the phototropin (phot), which is a blue-light photoreceptor and has also been reported to act as a thermosensory protein that perceives temperature variation. Our previous report indicated that cold-induced changes in phot biochemical activity initiate the cold-avoidance response. In this study, we further explored the induction mechanism of the cold-avoidance response in the liverwort Marchantia polymorpha and examined the relationship between changes in the amount of phot and the induction of the cold-avoidance response. The switch between the accumulation and avoidance responses occurs at a so-called 'transitional' light intensity. Our physiological experiments revealed that a cold-mediated decrease in the transitional light intensity leads to the induction of the cold-avoidance response. While artificial overexpression of phot decreased the transitional light intensity as much as cold treatment did, the amount of endogenous phot was not increased by cold treatment in wild-type M. polymorpha. Taken together, these findings show that the cold-avoidance response is initiated by a cold-mediated reduction of the transitional light intensity, independent of the amount of endogenous phot. This study provides a clue to understanding the mechanism underlying the switch in direction of chloroplast relocation in response to light and temperature.
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Affiliation(s)
- Yuta Fujii
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Yuka Ogasawara
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- Faculty of Agriculture, Utsunomiya University, Tochigi, Japan
| | - Yamato Takahashi
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- Graduate School of Agricultural Science, Utsunomiya University, Tochigi, Japan
| | - Momoko Sakata
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Minoru Noguchi
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- Graduate School of Agricultural Science, Utsunomiya University, Tochigi, Japan
| | - Saori Tamura
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- Graduate School of Agricultural Science, Utsunomiya University, Tochigi, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
- Graduate School of Agricultural Science, Utsunomiya University, Tochigi, Japan
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41
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Abstract
Plants contain abundant autofluorescent molecules that can be used for biochemical, physiological, or imaging studies. The two most studied molecules are chlorophyll (orange/red fluorescence) and lignin (blue/green fluorescence). Chlorophyll fluorescence is used to measure the physiological state of plants using handheld devices that can measure photosynthesis, linear electron flux, and CO2 assimilation by directly scanning leaves, or by using reconnaissance imaging from a drone, an aircraft or a satellite. Lignin fluorescence can be used in imaging studies of wood for phenotyping of genetic variants in order to evaluate reaction wood formation, assess chemical modification of wood, and study fundamental cell wall properties using Förster Resonant Energy Transfer (FRET) and other methods. Many other fluorescent molecules have been characterized both within the protoplast and as components of cell walls. Such molecules have fluorescence emissions across the visible spectrum and can potentially be differentiated by spectral imaging or by evaluating their response to change in pH (ferulates) or chemicals such as Naturstoff reagent (flavonoids). Induced autofluorescence using glutaraldehyde fixation has been used to enable imaging of proteins/organelles in the cell protoplast and to allow fluorescence imaging of fungal mycelium.
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42
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Ishishita K, Higa T, Tanaka H, Inoue SI, Chung A, Ushijima T, Matsushita T, Kinoshita T, Nakai M, Wada M, Suetsugu N, Gotoh E. Phototropin2 Contributes to the Chloroplast Avoidance Response at the Chloroplast-Plasma Membrane Interface. PLANT PHYSIOLOGY 2020; 183:304-316. [PMID: 32193212 PMCID: PMC7210631 DOI: 10.1104/pp.20.00059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 03/09/2020] [Indexed: 05/31/2023]
Abstract
Blue-light-induced chloroplast movements play an important role in maximizing light utilization for photosynthesis in plants. Under a weak light condition, chloroplasts accumulate to the cell surface to capture light efficiently (chloroplast accumulation response). Conversely, chloroplasts escape from strong light and move to the side wall to reduce photodamage (chloroplast avoidance response). The blue light receptor phototropin (phot) regulates these chloroplast movements and optimizes leaf photosynthesis by controlling other responses in addition to chloroplast movements. Seed plants such as Arabidopsis (Arabidopsis thaliana) have phot1 and phot2. They redundantly mediate phototropism, stomatal opening, leaf flattening, and the chloroplast accumulation response. However, the chloroplast avoidance response is induced by strong blue light and regulated primarily by phot2. Phots are localized mainly on the plasma membrane. However, a substantial amount of phot2 resides on the chloroplast outer envelope. Therefore, differentially localized phot2 might have different functions. To determine the functions of plasma membrane- and chloroplast envelope-localized phot2, we tethered it to these structures with their respective targeting signals. Plasma membrane-localized phot2 regulated phototropism, leaf flattening, stomatal opening, and chloroplast movements. Chloroplast envelope-localized phot2 failed to mediate phototropism, leaf flattening, and the chloroplast accumulation response but partially regulated the chloroplast avoidance response and stomatal opening. Based on the present and previous findings, we propose that phot2 localized at the interface between the plasma membrane and the chloroplasts is required for the chloroplast avoidance response and possibly for stomatal opening as well.
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Affiliation(s)
- Kazuhiro Ishishita
- Graduate School of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Takeshi Higa
- Institute for Protein Research, Osaka University, Osaka 565-0871, Japan
| | - Hidekazu Tanaka
- Graduate School of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Shin-Ichiro Inoue
- Graduate School of Sciences, Nagoya University, Aichi 464-8602, Japan
| | - Aeri Chung
- Graduate School of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | | | | | | | - Masato Nakai
- Institute for Protein Research, Osaka University, Osaka 565-0871, Japan
| | - Masamitsu Wada
- Graduate School of Science and Engineering, Tokyo Metropolitan University, Tokyo 192-0397, Japan
| | - Noriyuki Suetsugu
- Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan
| | - Eiji Gotoh
- Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
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43
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Perroud PF, Meyberg R, Demko V, Quatrano RS, Olsen OA, Rensing SA. DEK1 displays a strong subcellular polarity during Physcomitrella patens 3D growth. THE NEW PHYTOLOGIST 2020; 226:1029-1041. [PMID: 31913503 DOI: 10.1111/nph.16417] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 12/24/2019] [Indexed: 05/18/2023]
Abstract
Defective Kernel 1 (DEK1) is genetically at the nexus of the 3D morphogenesis of land plants. We aimed to localize DEK1 in the moss Physcomitrella patens to decipher its function during this process. To detect DEK1 in vivo, we inserted the tdTomato fluorophore into PpDEK1 gene locus. Confocal microscopy coupled with the use of time-gating allowed the precise DEK1 subcellular localization during 3D morphogenesis. DEK1 localization displays a strong polarized signal, as it is restricted to the plasma membrane domain between recently divided cells during the early steps of 3D growth development as well as during the subsequent vegetative growth. The signal furthermore displays a clear developmental pattern because it is only detectable in recently divided and elongating cells. Additionally, DEK1 localization appears to be independent of its calpain domain proteolytic activity. The DEK1 polar subcellular distribution in 3D tissue developing cells defines a functional cellular framework to explain its role in this developmental phase. Also, the observation of DEK1 during spermatogenesis suggests another biological function for this protein in plants. Finally the DEK1-tagged strain generated here provides a biological platform upon which further investigations into 3D developmental processes can be performed.
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Affiliation(s)
- Pierre-François Perroud
- Plant Cell Biology, Faculty of Biology, University of Marburg, Karl-von-Frisch Str. 8, Marburg, 35043, Germany
| | - Rabea Meyberg
- Plant Cell Biology, Faculty of Biology, University of Marburg, Karl-von-Frisch Str. 8, Marburg, 35043, Germany
| | - Viktor Demko
- Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovicova 6, Bratislava, 84215, Slovakia
| | - Ralph S Quatrano
- Department of Biology, Washington University in St Louis, One Brookings Dr., Campus, Box 1137, St Louis, MO, 63130, USA
| | - Odd-Arne Olsen
- Norwegian University of Life Sciences, PO Box 5003, Aas, NO-1432, Norway
| | - Stefan A Rensing
- Plant Cell Biology, Faculty of Biology, University of Marburg, Karl-von-Frisch Str. 8, Marburg, 35043, Germany
- BIOSS Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, Freiburg im Breisgau, 79104, Germany
- LOEWE Center for Synthetic Microbiology (SYNMIKRO), University of Marburg, Hans-Meerwein-Straße 6, Marburg, 35043, Germany
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44
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Kato S, Ozasa K, Maeda M, Tanno Y, Tamaki S, Higuchi‐Takeuchi M, Numata K, Kodama Y, Sato M, Toyooka K, Shinomura T. Carotenoids in the eyespot apparatus are required for triggering phototaxis in Euglena gracilis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 101:1091-1102. [PMID: 31630463 PMCID: PMC7155050 DOI: 10.1111/tpj.14576] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 10/08/2019] [Indexed: 06/02/2023]
Abstract
Carotenoids are the most universal and most widespread pigments in nature. They have played pivotal roles in the evolution of photosensing mechanisms in microbes and of vision in animals. Several groups of phytoflagellates developed a photoreceptive organelle called the eyespot apparatus (EA) consisting of two separable components: the eyespot, a cluster of carotenoid-rich globules that acts as a reflector device, and actual photoreceptors for photobehaviors. Unlike other algal eyespots, the eyespot of Euglenophyta lacks reflective properties and is generally considered to act as a shading device for the photoreceptor (paraflagellar body, PFB) for major photomovements. However, the function of the eyespot of Euglenophyta has not yet been fully proven. Here, we report that the blocking carotenoid biosynthesis in Euglena gracilis by suppressing the phytoene synthase gene (crtB) caused a defect in eyespot function resulting in a loss of phototaxis. Raman spectroscopy and transmission electron microscopy suggested that EgcrtB-suppressed cells formed eyespot globules but had a defect in the accumulation of carotenoids in those packets. Motion analysis revealed the loss of phototaxis in EgcrtB-suppressed cells: a defect in the initiation of turning movements immediately after a change in light direction, rather than a defect in the termination of cell turning at the appropriate position due to a loss of the shading effect on the PFB. This study revealed that carotenoids are essential for light perception by the EA for the initiation of phototactic movement by E. gracilis, suggesting one possible photosensory role of carotenoids in the EA for the phototaxis.
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Affiliation(s)
- Shota Kato
- Plant Molecular and Cellular Biology LaboratoryDepartment of BiosciencesSchool of Science and EngineeringTeikyo University1‐1 ToyosatodaiUtsunomiyaTochigi320‐8551Japan
- Laboratory of Complex BiologyCenter for Plant Aging ResearchInstitute for Basic ScienceDGISTDaegu42988Republic of Korea
| | - Kazunari Ozasa
- Bioengineering LaboratoryCluster for Pioneering ResearchRIKEN2‐1 HirosawaWakoSaitama351‐0198Japan
| | - Mizuo Maeda
- Bioengineering LaboratoryCluster for Pioneering ResearchRIKEN2‐1 HirosawaWakoSaitama351‐0198Japan
| | - Yuri Tanno
- Plant Molecular and Cellular Biology LaboratoryDivision of Integrated Science and EngineeringGraduate School of Science and EngineeringTeikyo University Graduate Schools1‐1 ToyosatodaiUtsunomiyaTochigi320‐8551Japan
| | - Shun Tamaki
- Plant Molecular and Cellular Biology LaboratoryDepartment of BiosciencesSchool of Science and EngineeringTeikyo University1‐1 ToyosatodaiUtsunomiyaTochigi320‐8551Japan
| | - Mieko Higuchi‐Takeuchi
- Biomacromolecules Research TeamCenter for Sustainable Resource ScienceRIKEN2‐1 HirosawaWakoSaitama351‐0198Japan
| | - Keiji Numata
- Biomacromolecules Research TeamCenter for Sustainable Resource ScienceRIKEN2‐1 HirosawaWakoSaitama351‐0198Japan
| | - Yutaka Kodama
- Center for Bioscience Research and EducationUtsunomiya UniversityUtsunomiyaTochigi321‐8505Japan
| | - Mayuko Sato
- Center for Sustainable Resource ScienceRIKEN1‐7‐22 Suehiro‐cho, Tsurumi‐kuYokohamaKanagawa230‐0045Japan
| | - Kiminori Toyooka
- Center for Sustainable Resource ScienceRIKEN1‐7‐22 Suehiro‐cho, Tsurumi‐kuYokohamaKanagawa230‐0045Japan
| | - Tomoko Shinomura
- Plant Molecular and Cellular Biology LaboratoryDepartment of BiosciencesSchool of Science and EngineeringTeikyo University1‐1 ToyosatodaiUtsunomiyaTochigi320‐8551Japan
- Plant Molecular and Cellular Biology LaboratoryDivision of Integrated Science and EngineeringGraduate School of Science and EngineeringTeikyo University Graduate Schools1‐1 ToyosatodaiUtsunomiyaTochigi320‐8551Japan
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45
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Hamashima N, Xie X, Hikawa M, Suzuki T, Kodama Y. A gain-of-function T-DNA insertion mutant of Marchantia polymorpha hyper-accumulates flavonoid riccionidin A. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2019; 36:201-204. [PMID: 31768123 PMCID: PMC6854341 DOI: 10.5511/plantbiotechnology.19.0722a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 07/22/2019] [Indexed: 05/09/2023]
Abstract
Marchantia polymorpha is a model liverwort for which many molecular biological techniques are now available. We previously developed the S-AgarTrap method for easy genetic transformation of M. polymorpha using spores. In this study, we report production of a T-DNA insertion mutant library (approx. 10,000 lines) for M. polymorpha using the S-AgarTrap method. We further isolate and characterize a gain-of-function mutant that hyper-accumulates the flavonoid riccionidin A. The present study demonstrates that the S-AgarTrap-mediated production of a T-DNA insertion mutant library is a powerful tool for molecular biology in M. polymorpha.
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Affiliation(s)
- Noriko Hamashima
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
| | - Xiaonan Xie
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
| | - Mio Hikawa
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
| | - Tomohiro Suzuki
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
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Dong R, Li Y, Li W, Zhang H, Liu Y, Ma L, Wang X, Lei B. Recent developments in luminescent nanoparticles for plant imaging and photosynthesis. J RARE EARTH 2019. [DOI: 10.1016/j.jre.2019.04.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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47
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Shinotsuka R, Oba T, Mitome T, Masuya T, Ito S, Murakami Y, Kagenishi T, Kodama Y, Matsuda M, Yoshida T, Wakamori M, Ohkura M, Nakai J. Synthesis of quinolyl-pyrrole derivatives as novel environment-sensitive fluorescent probes. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111900] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Sakata M, Kimura S, Fujii Y, Sakai T, Kodama Y. Relationship between relocation of phototropin to the chloroplast periphery and the initiation of chloroplast movement in Marchantia polymorpha. PLANT DIRECT 2019; 3:e00160. [PMID: 31468027 PMCID: PMC6710648 DOI: 10.1002/pld3.160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 07/23/2019] [Accepted: 07/31/2019] [Indexed: 05/02/2023]
Abstract
The blue-light photoreceptor kinase phototropin (phot) mediates chloroplast movement in response to light and temperature. Phot predominantly localizes at the plasma membrane, but also resides in the cytosol and the chloroplast periphery. Although the phot localized to the chloroplast periphery is thought to mediate chloroplast movement, the localization mechanism is unknown. In this study, we found that chloroplast movement does not occur in 0-day-old gemma cells of the liverwort Marchantia polymorpha but that the movement is induced in 1-day-old gemmaling cells. Along with this physiological change, the subcellular localization of phot also changed: In 0-day-old gemma cells, phot localized at the plasma membrane and the cytosol, but in 1-day-old gemmaling cells, the phot disappeared from the cytosol and appeared at the chloroplast periphery. When the relocalization was tracked using a photoconvertible fluorescent protein, the cytosolic phot relocated to the plasma membrane, and the plasma membrane-resident phot relocated to the chloroplast periphery. The blue-light-dependent activation of phot kinase activity enhanced this relocalization. Mutated phot deficient in blue-light reception or kinase activity had a severely reduced ability to localize at the chloroplast periphery. These findings suggest that photoactivated phot localizes at the chloroplast periphery to initiate chloroplast movement.
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Affiliation(s)
- Momoko Sakata
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- Graduate School of Agricultural ScienceUtsunomiya UniversityTochigiJapan
| | - Shun Kimura
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- Graduate School of Agricultural ScienceUtsunomiya UniversityTochigiJapan
| | - Yuta Fujii
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- United Graduate School of Agricultural ScienceTokyo University of Agriculture and TechnologyTokyoJapan
| | - Takamasa Sakai
- Department of Bioengineering, School of EngineeringThe University of TokyoTokyoJapan
| | - Yutaka Kodama
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- Graduate School of Agricultural ScienceUtsunomiya UniversityTochigiJapan
- United Graduate School of Agricultural ScienceTokyo University of Agriculture and TechnologyTokyoJapan
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49
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Su W, Du M, Lin F, Zhang C, Chen T. Quantitative FRET measurement based on spectral unmixing of donor, acceptor and spontaneous excitation-emission spectra. JOURNAL OF BIOPHOTONICS 2019; 12:e201800314. [PMID: 30414249 DOI: 10.1002/jbio.201800314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 09/28/2018] [Accepted: 11/06/2018] [Indexed: 06/08/2023]
Abstract
The spontaneous excitation-emission (ExEm) spectrum is introduced to the quantitative mExEm-spFRET methodology we recently developed as a spectral unmixing component for quantitative fluorescence resonance energy transfer measurement, named as SPEES-FRET method. The spectral fingerprints of both donor and acceptor were measured in HepG2 cells with low autofluorescence separately expressing donor and acceptor, and the spontaneous spectral fingerprint of HEK293 cells with strong autofluoresence was measured from blank cells. SPEES-FRET was performed on improved spectrometer-microscope system to measure the FRET efficiency (E) and concentration ratio (R C ) of acceptor to donor vales of FRET tandem plasmids in HEK293 cells, and obtained stable and consistent results with the expected values. Moreover, SPEES-FRET always obtained stable results for the bright and dim cells coexpressing Cerulean and Venus or Cyan Fluorescent Protein (CFP)-Bax and Yellow fluorescent protein (YFP)-Bax, and the E values between CFP-Bax and YFP-Bax were 0.02 for healthy cells and 0.14 for the staurosporine (STS)-treated apoptotic cells. Collectively, SPEES-FRET has very strong robustness against cellular autofluorescence, and thus is applicable to quantitative evaluation on the protein-protein interaction in living cells with strong autofluoresence.
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Affiliation(s)
- Wenhua Su
- MOE Key Laboratory of Laser Life Science & College of Life Science, South China Normal University, Guangzhou, China
| | - Mengyan Du
- MOE Key Laboratory of Laser Life Science & College of Life Science, South China Normal University, Guangzhou, China
| | - Fangrui Lin
- MOE Key Laboratory of Laser Life Science & College of Life Science, South China Normal University, Guangzhou, China
| | - Chenshuang Zhang
- MOE Key Laboratory of Laser Life Science & College of Life Science, South China Normal University, Guangzhou, China
| | - Tongsheng Chen
- MOE Key Laboratory of Laser Life Science & College of Life Science, South China Normal University, Guangzhou, China
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50
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Komatsu A, Nishihama R, Kohchi T. Observation of Phototropic Responses in the Liverwort Marchantia polymorpha. Methods Mol Biol 2019; 1924:53-61. [PMID: 30694467 DOI: 10.1007/978-1-4939-9015-3_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The liverwort species, Marchantia polymorpha, shows environment-dependent morphological plasticity throughout its life cycle. Thalli, representing the predominant body form throughout most of this bryophyte's life cycle, grow with repeated dichotomous branching at the apex and develop horizontally under sufficient light intensity. Spores, after germination, produce a mass of cells, called sporelings, which then grow into thalli. Both thalli and sporelings, if grown under weak light conditions, form narrow shapes, and their apices grow toward the light source. These phototropic responses are specific to blue light and dependent on the blue-light receptor phototropin. This chapter provides several basic procedures, along with some tips, for designing and performing experiments with M. polymorpha to observe their phototropic responses, as well as methods for observing the localization of the phototropin "Mpphot" with a fluorescent protein tag.
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Affiliation(s)
- Aino Komatsu
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | | | - Takayuki Kohchi
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan.
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