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Gámez-Arjona F, Park HJ, García E, Aman R, Villalta I, Raddatz N, Carranco R, Ali A, Ali Z, Zareen S, De Luca A, Leidi EO, Daniel-Mozo M, Xu ZY, Albert A, Kim WY, Pardo JM, Sánchez-Rodriguez C, Yun DJ, Quintero FJ. Inverse regulation of SOS1 and HKT1 protein localization and stability by SOS3/CBL4 in Arabidopsis thaliana. Proc Natl Acad Sci U S A 2024; 121:e2320657121. [PMID: 38386704 PMCID: PMC10907282 DOI: 10.1073/pnas.2320657121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 01/12/2024] [Indexed: 02/24/2024] Open
Abstract
To control net sodium (Na+) uptake, Arabidopsis plants utilize the plasma membrane (PM) Na+/H+ antiporter SOS1 to achieve Na+ efflux at the root and Na+ loading into the xylem, and the channel-like HKT1;1 protein that mediates the reverse flux of Na+ unloading off the xylem. Together, these opposing transport systems govern the partition of Na+ within the plant yet they must be finely co-regulated to prevent a futile cycle of xylem loading and unloading. Here, we show that the Arabidopsis SOS3 protein acts as the molecular switch governing these Na+ fluxes by favoring the recruitment of SOS1 to the PM and its subsequent activation by the SOS2/SOS3 kinase complex under salt stress, while commanding HKT1;1 protein degradation upon acute sodic stress. SOS3 achieves this role by direct and SOS2-independent binding to previously unrecognized functional domains of SOS1 and HKT1;1. These results indicate that roots first retain moderate amounts of salts to facilitate osmoregulation, yet when sodicity exceeds a set point, SOS3-dependent HKT1;1 degradation switches the balance toward Na+ export out of the root. Thus, SOS3 functionally links and co-regulates the two major Na+ transport systems operating in vascular plants controlling plant tolerance to salinity.
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Affiliation(s)
- Francisco Gámez-Arjona
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and University of Seville, Seville41092, Spain
- Department of Biology, ETH Zurich, Zurich8092, Switzerland
| | - Hee Jin Park
- Department of Biomedical Science and Engineering, Konkuk University, Seoul05029, South Korea
- Department of Biological Sciences, Chonnam National University, Gwangju61186, Korea
| | - Elena García
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and University of Seville, Seville41092, Spain
| | - Rashid Aman
- Laboratory for Genome Engineering and Synthetic Biology, King Abdullah University of Science and Technology, Thuwal23955-6900, Saudi Arabia
| | - Irene Villalta
- Institut de Recherche sur la Biologie de l’Insecte, Université de Tours, Tours37200, France
| | - Natalia Raddatz
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and University of Seville, Seville41092, Spain
| | - Raul Carranco
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and University of Seville, Seville41092, Spain
| | - Akhtar Ali
- Department of Biomedical Science and Engineering, Konkuk University, Seoul05029, South Korea
| | - Zahir Ali
- Laboratory for Genome Engineering and Synthetic Biology, King Abdullah University of Science and Technology, Thuwal23955-6900, Saudi Arabia
| | - Shah Zareen
- Department of Biomedical Science and Engineering, Konkuk University, Seoul05029, South Korea
| | - Anna De Luca
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and University of Seville, Seville41092, Spain
| | - Eduardo O. Leidi
- Instituto de Recursos Naturales y Agrobiología, Consejo Superior de Investigaciones Cientificas, Seville41012, Spain
| | - Miguel Daniel-Mozo
- Instituto de Química Física Blas Cabrera, Consejo Superior de Investigaciones Científicas, Madrid28006, Spain
| | - Zheng-Yi Xu
- Key Laboratory of Molecular Epigenetics, Northeast Normal University, Changchun130024, China
| | - Armando Albert
- Instituto de Química Física Blas Cabrera, Consejo Superior de Investigaciones Científicas, Madrid28006, Spain
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 Program), Research Institute of Life Sciences, Gyeongsang National University, Jinju660-701, South Korea
| | - Jose M. Pardo
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and University of Seville, Seville41092, Spain
| | - Clara Sánchez-Rodriguez
- Department of Biology, ETH Zurich, Zurich8092, Switzerland
- Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid–Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (CSIC), Pozuelo de Alarcón28223, Spain
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul05029, South Korea
| | - Francisco J. Quintero
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and University of Seville, Seville41092, Spain
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Kim D, Jeon SJ, Hong JK, Kim MG, Kim SH, Kadam US, Kim WY, Chung WS, Stacey G, Hong JC. The Auto-Regulation of ATL2 E3 Ubiquitin Ligase Plays an Important Role in the Immune Response against Alternaria brassicicola in Arabidopsis thaliana. Int J Mol Sci 2024; 25:2388. [PMID: 38397062 PMCID: PMC10889567 DOI: 10.3390/ijms25042388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/13/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
The ubiquitin/26S proteasome system is a crucial regulatory mechanism that governs various cellular processes in plants, including signal transduction, transcriptional regulation, and responses to biotic and abiotic stressors. Our study shows that the RING-H2-type E3 ubiquitin ligase, Arabidopsis Tóxicos en Levadura 2 (ATL2), is involved in response to fungal pathogen infection. Under normal growth conditions, the expression of the ATL2 gene is low, but it is rapidly and significantly induced by exogenous chitin. Additionally, ATL2 protein stability is markedly increased via chitin treatment, and its degradation is prolonged when 26S proteasomal function is inhibited. We found that an atl2 null mutant exhibited higher susceptibility to Alternaria brassicicola, while plants overexpressing ATL2 displayed increased resistance. We also observed that the hyphae of A. brassicicola were strongly stained with trypan blue staining, and the expression of A. brassicicola Cutinase A (AbCutA) was dramatically increased in atl2. In contrast, the hyphae were weakly stained, and AbCutA expression was significantly reduced in ATL2-overexpressing plants. Using bioinformatics, live-cell confocal imaging, and cell fractionation analysis, we revealed that ATL2 is localized to the plasma membrane. Further, it is demonstrated that the ATL2 protein possesses E3 ubiquitin ligase activity and found that cysteine 138 residue is critical for its function. Moreover, ATL2 is necessary to successfully defend against the A. brassicicola fungal pathogen. Altogether, our data suggest that ATL2 is a plasma membrane-integrated protein with RING-H2-type E3 ubiquitin ligase activity and is essential for the defense response against fungal pathogens in Arabidopsis.
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Affiliation(s)
- Daewon Kim
- Division of Life Science and Division of Applied Life Science (BK21 Four), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (D.K.); (S.J.J.); (S.H.K.); (U.S.K.)
- Division of Plant Science & Technology, C.S. Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA;
| | - Su Jeong Jeon
- Division of Life Science and Division of Applied Life Science (BK21 Four), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (D.K.); (S.J.J.); (S.H.K.); (U.S.K.)
| | - Jeum Kyu Hong
- Laboratory of Horticultural Crop Protection, Division of Horticultural Science, Gyeongsang National University, 33 Dongjin-ro, Jinju 52725, Republic of Korea;
- Agri-Food Bio Convergence Institute, Gyeongsang National University, 33 Dongjin-ro, Jinju 52725, Republic of Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea;
| | - Sang Hee Kim
- Division of Life Science and Division of Applied Life Science (BK21 Four), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (D.K.); (S.J.J.); (S.H.K.); (U.S.K.)
| | - Ulhas S. Kadam
- Division of Life Science and Division of Applied Life Science (BK21 Four), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (D.K.); (S.J.J.); (S.H.K.); (U.S.K.)
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center (PBRRC), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea
| | - Woo Sik Chung
- Division of Life Science and Division of Applied Life Science (BK21 Four), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (D.K.); (S.J.J.); (S.H.K.); (U.S.K.)
| | - Gary Stacey
- Division of Plant Science & Technology, C.S. Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA;
| | - Jong Chan Hong
- Division of Life Science and Division of Applied Life Science (BK21 Four), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (D.K.); (S.J.J.); (S.H.K.); (U.S.K.)
- Division of Plant Science & Technology, C.S. Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA;
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Nguyen CC, Van Vu T, Shelake RM, Nguyen NT, Khanh TD, Kim WY, Kim JY. Generation of parthenocarpic tomato plants in multiple elite cultivars using the CRISPR/Cas9 system. Mol Breed 2024; 44:13. [PMID: 38317771 PMCID: PMC10838257 DOI: 10.1007/s11032-024-01452-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 10/02/2023] [Indexed: 02/07/2024]
Abstract
Tomato (Solanum lycopersicum L.) is one of the most important crops in the world for its fruit production. Advances in cutting-edge techniques have enabled the development of numerous critical traits related to the quality and quantity of tomatoes. Genetic engineering techniques, such as gene transformation and gene editing, have emerged as powerful tools for generating new plant varieties with superior traits. In this study, we induced parthenocarpic traits in a population of elite tomato (ET) lines. At first, the adaptability of ET lines to genetic transformation was evaluated to identify the best-performing lines by transforming the SlANT1 gene overexpression cassette and then later used to produce the SlIAA9 knockout lines using the CRISPR/Cas9 system. ET5 and ET8 emerged as excellent materials for these techniques and showed higher efficiency. Typical phenotypes of knockout sliaa9 were clearly visible in G0 and G1 plants, in which simple leaves and parthenocarpic fruits were observed. The high efficiency of the CRISPR/Cas9 system in developing new tomato varieties with desired traits in a short period was demonstrated by generating T-DNA-free homozygous sliaa9 knockout plants in the G1 generation. Additionally, a simple artificial fertilization method was successfully applied to recover seed production from parthenocarpic plants, securing the use of these varieties as breeding materials. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-024-01452-1.
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Affiliation(s)
- Cam Chau Nguyen
- Division of Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Korea
- Faculty of Biotechnology, Vietnam National University of Agriculture, Hanoi, Vietnam
| | - Tien Van Vu
- Division of Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Korea
| | - Rahul Mahadev Shelake
- Division of Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Korea
| | - Nhan Thi Nguyen
- Institute of Environmental Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | | | - Woe-Yeon Kim
- Division of Applied Life Science (BK21+) and Research Institute of Life Science, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Korea
| | - Jae-Yean Kim
- Division of Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Korea
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4
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Lee J, Yang JH, Weber APM, Bhattacharya D, Kim WY, Yoon HS. Diurnal Rhythms in the Red Seaweed Gracilariopsis chorda are Characterized by Unique Regulatory Networks of Carbon Metabolism. Mol Biol Evol 2024; 41:msae012. [PMID: 38267085 PMCID: PMC10853006 DOI: 10.1093/molbev/msae012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 01/01/2024] [Accepted: 01/08/2024] [Indexed: 01/26/2024] Open
Abstract
Cellular and physiological cycles are driven by endogenous pacemakers, the diurnal and circadian rhythms. Key functions such as cell cycle progression and cellular metabolism are under rhythmic regulation, thereby maintaining physiological homeostasis. The photoreceptors phytochrome and cryptochrome, in response to light cues, are central input pathways for physiological cycles in most photosynthetic organisms. However, among Archaeplastida, red algae are the only taxa that lack phytochromes. Current knowledge about oscillatory rhythms is primarily derived from model species such as Arabidopsis thaliana and Chlamydomonas reinhardtii in the Viridiplantae, whereas little is known about these processes in other clades of the Archaeplastida, such as the red algae (Rhodophyta). We used genome-wide expression profiling of the red seaweed Gracilariopsis chorda and identified 3,098 rhythmic genes. Here, we characterized possible cryptochrome-based regulation and photosynthetic/cytosolic carbon metabolism in this species. We found a large family of cryptochrome genes in G. chorda that display rhythmic expression over the diurnal cycle and may compensate for the lack of phytochromes in this species. The input pathway gates regulatory networks of carbon metabolism which results in a compact and efficient energy metabolism during daylight hours. The system in G. chorda is distinct from energy metabolism in most plants, which activates in the dark. The green lineage, in particular, land plants, balance water loss and CO2 capture in terrestrial environments. In contrast, red seaweeds maintain a reduced set of photoreceptors and a compact cytosolic carbon metabolism to thrive in the harsh abiotic conditions typical of intertidal zones.
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Affiliation(s)
- JunMo Lee
- Department of Oceanography, Kyungpook National University, Daegu 41566, Korea
- Kyungpook Institute of Oceanography, Kyungpook National University, Daegu 41566, Korea
| | - Ji Hyun Yang
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Korea
| | - Andreas P M Weber
- Institute of Plant Biochemistry, Cluster of Excellence on Plant Science (CEPLAS), Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Debashish Bhattacharya
- Department of Biochemistry and Microbiology, Rutgers University, New Brunswick, NJ 08901, USA
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 four), Research Institute of Life Science, Gyeongsang National University, Jinju 52828, Korea
| | - Hwan Su Yoon
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Korea
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Ahn G, Ban YJ, Shin GI, Jeong SY, Park KH, Kim WY, Cha JY. Ethylene enhances transcriptions of asparagine biosynthetic genes in soybean ( Glycine max L. Merr) leaves. Plant Signal Behav 2023; 18:2287883. [PMID: 38019725 PMCID: PMC10761183 DOI: 10.1080/15592324.2023.2287883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 11/19/2023] [Indexed: 12/01/2023]
Abstract
Soybean, a vital protein-rich crop, offers bioactivity that can mitigate various chronic human diseases. Nonetheless, soybean breeding poses a challenge due to the negative correlation between enhanced protein levels and overall productivity. Our previous studies demonstrated that applying gaseous phytohormone, ethylene, to soybean leaves significantly boosts the accumulation of free amino acids, particularly asparagine (Asn). Current studies also revealed that ethylene application to soybeans significantly enhanced both essential and non-essential amino acid contents in leaves and stems. Asn plays a crucial role in ammonia detoxification and reducing fatigue. However, the molecular evidence supporting this phenomenon remains elusive. This study explores the molecular mechanisms behind enhanced Asn accumulation in ethylene-treated soybean leaves. Transcriptional analysis revealed that ethylene treatments to soybean leaves enhance the transcriptional levels of key genes involved in Asn biosynthesis, such as aspartate aminotransferase (AspAT) and Asn synthetase (ASN), which aligns with our previous observations of elevated Asn levels. These findings shed light on the role of ethylene in upregulating Asn biosynthetic genes, subsequently enhancing Asn concentrations. This molecular insight into amino acid metabolism regulation provides valuable knowledge for the metabolic farming of crops, especially in elevating nutraceutical ingredients with non-genetic modification (GM) approach for improved protein content.
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Affiliation(s)
- Gyeongik Ahn
- Division of Applied Life Science (BK21four), IALS, RILS, and PBRRC, Gyeongsang National University, Jinju, Republic of Korea
| | - Yeong Jun Ban
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju, Republic of Korea
| | - Gyeong-Im Shin
- Division of Applied Life Science (BK21four), IALS, RILS, and PBRRC, Gyeongsang National University, Jinju, Republic of Korea
| | - Song Yi Jeong
- Division of Applied Life Science (BK21four), IALS, RILS, and PBRRC, Gyeongsang National University, Jinju, Republic of Korea
| | - Ki Hun Park
- Division of Applied Life Science (BK21four), IALS, RILS, and PBRRC, Gyeongsang National University, Jinju, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21four), IALS, RILS, and PBRRC, Gyeongsang National University, Jinju, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21four), IALS, RILS, and PBRRC, Gyeongsang National University, Jinju, Republic of Korea
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Han SY, Kim WY, Kim JS, Hwang I. Comparative transcriptomics reveals the role of altered energy metabolism in the establishment of single-cell C 4 photosynthesis in Bienertia sinuspersici. Front Plant Sci 2023; 14:1202521. [PMID: 37476170 PMCID: PMC10354284 DOI: 10.3389/fpls.2023.1202521] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 05/31/2023] [Indexed: 07/22/2023]
Abstract
Single-cell C4 photosynthesis (SCC4) in terrestrial plants without Kranz anatomy involves three steps: initial CO2 fixation in the cytosol, CO2 release in mitochondria, and a second CO2 fixation in central chloroplasts. Here, we investigated how the large number of mechanisms underlying these processes, which occur in three different compartments, are orchestrated in a coordinated manner to establish the C4 pathway in Bienertia sinuspersici, a SCC4 plant. Leaves were subjected to transcriptome analysis at three different developmental stages. Functional enrichment analysis revealed that SCC4 cycle genes are coexpressed with genes regulating cyclic electron flow and amino/organic acid metabolism, two key processes required for the production of energy molecules in C3 plants. Comparative gene expression profiling of B. sinuspersici and three other species (Suaeda aralocaspica, Amaranthus hypochondriacus, and Arabidopsis thaliana) showed that the direction of metabolic flux was determined via an alteration in energy supply in peripheral chloroplasts and mitochondria via regulation of gene expression in the direction of the C4 cycle. Based on these results, we propose that the redox homeostasis of energy molecules via energy metabolism regulation is key to the establishment of the SCC4 pathway in B. sinuspersici.
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Affiliation(s)
- Sang-Yun Han
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21+) and Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Jung Sun Kim
- Genomic Division, Department of Agricultural Bio-Resources, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, Republic of Korea
| | - Inhwan Hwang
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
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Chae HB, Bae SB, Paeng SK, Wi SD, Phan KAT, Kim MG, Kim WY, Yun DJ, Lee SY. The physiological role of thiol-based redox sensors in plant defense signaling. New Phytol 2023. [PMID: 37322620 DOI: 10.1111/nph.19018] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 04/18/2023] [Indexed: 06/17/2023]
Abstract
Plants have developed multilayered defense strategies to adapt and acclimate to the kaleidoscopic environmental changes that rapidly produce reactive oxygen species (ROS) and induce redox changes. Thiol-based redox sensors containing the redox-sensitive cysteine residues act as the central machinery in plant defense signaling. Here, we review recent research on thiol-based redox sensors in plants, which perceive the changes in intracellular H2 O2 levels and activate specific downstream defense signaling. The review mainly focuses on the molecular mechanism of how the thiol sensors recognize internal/external stresses and respond to them by demonstrating several instances, such as cold-, drought-, salinity-, and pathogen-resistant signaling pathways. Also, we introduce another novel complex system of thiol-based redox sensors operating through the liquid-liquid phase separation.
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Affiliation(s)
- Ho Byoung Chae
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Su Bin Bae
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Seol Ki Paeng
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Seong Dong Wi
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Kieu Anh Thi Phan
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Min Gab Kim
- College of Pharmacy, Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju, 52828, Korea
| | - Woe-Yeon Kim
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Dae-Jin Yun
- Department of Biomedical Science & Engineering, Konkuk University, Seoul, 05029, Korea
| | - Sang Yeol Lee
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
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Cha JY, Uddin S, Macoy DM, Shin GI, Jeong SY, Ali I, Hwang JW, Ji MG, Lee SC, Park JH, Sultana M, Ryu GR, Ahn G, Lee SY, Kim MG, Kim WY. Nucleoredoxin gene SINRX1 negatively regulates tomato immunity by activating SA signaling pathway. Plant Physiol Biochem 2023; 200:107804. [PMID: 37269823 DOI: 10.1016/j.plaphy.2023.107804] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/12/2023] [Accepted: 05/29/2023] [Indexed: 06/05/2023]
Abstract
The tomato (Solanum lycopersicum) is widely consumed globally and renowned for its health benefits, including the reduction of cardiovascular disease and prostate cancer risk. However, tomato production faces significant challenges, particularly due to various biotic stresses such as fungi, bacteria, and viruses. To address this challenges, we employed the CRISPR/Cas9 system to modify the tomato NUCLEOREDOXIN (SlNRX) genes (SlNRX1 and SlNRX2) belonging to the nucleocytoplasmic THIOREDOXIN subfamily. CRISPR/Cas9-mediated mutations in SlNRX1 (slnrx1) plants exhibited resistance against bacterial leaf pathogen Pseudomonas syringae pv. maculicola (Psm) ES4326, as well as the fungal pathogen Alternaria brassicicola. However, the slnrx2 plants did not display resistance. Notably, the slnrx1 demonstrated elevated levels of endogenous salicylic acid (SA) and reduced levels of jasmonic acid after Psm infection, in comparison to both wild-type (WT) and slnrx2 plants. Furthermore, transcriptional analysis revealed that genes involved in SA biosynthesis, such as ISOCHORISMATE SYNTHASE 1 (SlICS1) and ENHANCED DISEASE SUSCEPTIBILITY 5 (SlEDS5), were upregulated in slnrx1 compared to WT plants. In addition, a key regulator of systemic acquired resistance, PATHOGENESIS-RELATED 1 (PR1), exhibited increased expression in slnrx1 compared to WT. These findings suggest that SlNRX1 acts as a negative regulator of plant immunity, facilitating infection by the Psm pathogen through interference with the phytohormone SA signaling pathway. Thus, targeted mutagenesis of SlNRX1 is a promising genetic means to enhance biotic stress resistance in crop breeding.
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Affiliation(s)
- Joon Yung Cha
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Shahab Uddin
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea; College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Donah Mary Macoy
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Gyeong-Im Shin
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Song Yi Jeong
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Imdad Ali
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Ji-Won Hwang
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Myung Geun Ji
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Sang Cheol Lee
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Joung Hun Park
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Marium Sultana
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Gyeong Ryul Ryu
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Gyeongik Ahn
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 52828, Republic of Korea.
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21four), PMBBRC, RILS, IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea.
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9
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Ahn G, Park HJ, Jeong SY, Shin GI, Ji MG, Cha JY, Kim J, Kim MG, Yun DJ, Kim WY. HOS15 represses flowering by promoting GIGANTEA degradation in response to low temperature in Arabidopsis. Plant Commun 2023:100570. [PMID: 36864727 PMCID: PMC10363504 DOI: 10.1016/j.xplc.2023.100570] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 02/13/2023] [Accepted: 02/27/2023] [Indexed: 06/19/2023]
Abstract
Flowering is the primary stage of the plant developmental transition and is tightly regulated by environmental factors such as light and temperature. However, the mechanisms by which temperature signals are integrated into the photoperiodic flowering pathway are still poorly understood. Here, we demonstrate that HOS15, which is known as a GI transcriptional repressor in the photoperiodic flowering pathway, controls flowering time in response to low ambient temperature. At 16°C, the hos15 mutant exhibits an early flowering phenotype, and HOS15 acts upstream of photoperiodic flowering genes (GI, CO, and FT). GI protein abundance is increased in the hos15 mutant and is insensitive to the proteasome inhibitor MG132. Furthermore, the hos15 mutant has a defect in low ambient temperature-mediated GI degradation, and HOS15 interacts with COP1, an E3 ubiquitin ligase for GI degradation. Phenotypic analyses of the hos15 cop1 double mutant revealed that repression of flowering by HOS15 is dependent on COP1 at 16°C. However, the HOS15-COP1 interaction was attenuated at 16°C, and GI protein abundance was additively increased in the hos15 cop1 double mutant, indicating that HOS15 acts independently of COP1 in GI turnover at low ambient temperature. This study proposes that HOS15 controls GI abundance through multiple modes as an E3 ubiquitin ligase and transcriptional repressor to coordinate appropriate flowering time in response to ambient environmental conditions such as temperature and day length.
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Affiliation(s)
- Gyeongik Ahn
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Hee Jin Park
- Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Song Yi Jeong
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Gyeong-Im Shin
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Myung Geun Ji
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Joon-Yung Cha
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Jeongsik Kim
- Faculty of Science Education and Interdisciplinary Graduate Program in Advanced Convergence Technology and Science, Jeju National University, Jeju 63243, Republic of Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Dae-Jin Yun
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Republic of Korea; Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Woe-Yeon Kim
- Research Institute of Life Science, Institute of Agricultural and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea.
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10
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Park HJ, Gámez-Arjona FM, Lindahl M, Aman R, Villalta I, Cha JY, Carranco R, Lim CJ, García E, Bressan RA, Lee SY, Valverde F, Sánchez-Rodríguez C, Pardo JM, Kim WY, Quintero FJ, Yun DJ. S-acylated and nucleus-localized SALT OVERLY SENSITIVE3/CALCINEURIN B-LIKE4 stabilizes GIGANTEA to regulate Arabidopsis flowering time under salt stress. Plant Cell 2023; 35:298-317. [PMID: 36135824 PMCID: PMC9806564 DOI: 10.1093/plcell/koac289] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 09/16/2022] [Indexed: 05/15/2023]
Abstract
The precise timing of flowering in adverse environments is critical for plants to secure reproductive success. We report a mechanism in Arabidopsis (Arabidopsis thaliana) controlling the time of flowering by which the S-acylation-dependent nuclear import of the protein SALT OVERLY SENSITIVE3/CALCINEURIN B-LIKE4 (SOS3/CBL4), a Ca2+-signaling intermediary in the plant response to salinity, results in the selective stabilization of the flowering time regulator GIGANTEA inside the nucleus under salt stress, while degradation of GIGANTEA in the cytosol releases the protein kinase SOS2 to achieve salt tolerance. S-acylation of SOS3 was critical for its nuclear localization and the promotion of flowering, but partly dispensable for salt tolerance. SOS3 interacted with the photoperiodic flowering components GIGANTEA and FLAVIN-BINDING, KELCH REPEAT, F-BOX1 and participated in the transcriptional complex that regulates CONSTANS to sustain the transcription of CO and FLOWERING LOCUS T under salinity. Thus, the SOS3 protein acts as a Ca2+- and S-acylation-dependent versatile regulator that fine-tunes flowering time in a saline environment through the shared spatial separation and selective stabilization of GIGANTEA, thereby connecting two signaling networks to co-regulate the stress response and the time of flowering.
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Affiliation(s)
| | | | - Marika Lindahl
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and Universidad de Sevilla, Seville 41092, Spain
| | - Rashid Aman
- Division of Applied Life Science (BK21plus Program), Research Institute of Life Sciences, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, South Korea
| | - Irene Villalta
- Institut de Recherche sur la Biologie de l’Insecte, Université de Tours, 37200 Tours, France
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21plus Program), Research Institute of Life Sciences, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, South Korea
| | - Raul Carranco
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and Universidad de Sevilla, Seville 41092, Spain
| | - Chae Jin Lim
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, South Korea
| | - Elena García
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and Universidad de Sevilla, Seville 41092, Spain
| | - Ray A Bressan
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana 47907, USA
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21plus Program), Research Institute of Life Sciences, Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, South Korea
| | - Federico Valverde
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and Universidad de Sevilla, Seville 41092, Spain
| | | | - Jose M Pardo
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and Universidad de Sevilla, Seville 41092, Spain
| | - Woe-Yeon Kim
- Author for correspondence: (D.-J.Y.); (F.J.Q.); (W.-Y.K.)
| | | | - Dae-Jin Yun
- Author for correspondence: (D.-J.Y.); (F.J.Q.); (W.-Y.K.)
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11
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Khakurel D, Uprety Y, Ahn G, Cha JY, Kim WY, Lee SH, Rajbhandary S. Diversity, distribution, and sustainability of traditional medicinal plants in Kaski district, western Nepal. Front Pharmacol 2022; 13:1076351. [PMID: 36605393 PMCID: PMC9807671 DOI: 10.3389/fphar.2022.1076351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022] Open
Abstract
Medicinal plants are the primary source of traditional healthcare systems in many rural areas mostly in developing countries. This study aimed to document and analyze the diversity, distribution, and sustainability of the traditional medicinal plants used by the Gurung people of the Sikles region in western Nepal. Ethnobotanical data were collected through focus group discussions and individual interviews, and analyzed using descriptive and inferential statistics. Prior informed consent was obtained before each interview. Quantitative ethnobotanical indices such as informant consensus factor, relative frequency of citation, and use values were also calculated. A possible association among these indices was tested using correlation analysis. A total of 115 wild medicinal plant species belonging to 106 genera and 71 families were documented. Asteraceae and Rosaceae were the dominant families whereas herbs were the most dominant life form. Roots were the most used plant part, paste was the most common method of preparation, and most of the medical formulations were taken orally. The highest number of medicinal plants were used to treat stomach disorders. The average informant consensus value of 0.79 indicates a high consensus among respondents in selecting medicinal plants. Lindera neesiana, Neopicrorhiza scrophulariiflora, Paris polyphylla, and Bergenia ciliata were found to be high-ranking medicinal plants based on the relative frequency of citation and use value. The genders did not affect medicinal plants' knowledge but age had a significant correlation. Most of the informants agreed that medicinal plants are under pressure due to overharvesting and a lack of proper forest management practices. The number of medicinal plants reported from the study area indicates that the Gurung people possess rich traditional knowledge, and the vegetation of the Sikles region constitutes rich diversity of medicinal plants.
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Affiliation(s)
- Dhruba Khakurel
- Department of Biology, Graduate School, Gyeongsang National University, Jinju, South Korea,Central Department of Botany, Tribhuvan University, Kirtipur, Nepal
| | - Yadav Uprety
- Central Department of Botany, Tribhuvan University, Kirtipur, Nepal,*Correspondence: Yadav Uprety, ; Woe-Yeon Kim, ; Sung-Ho Lee,
| | - Gyeongik Ahn
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, South Korea
| | - Joon-Yung Cha
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, South Korea,Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju, South Korea
| | - Woe-Yeon Kim
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, South Korea,Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju, South Korea,*Correspondence: Yadav Uprety, ; Woe-Yeon Kim, ; Sung-Ho Lee,
| | - Sung-Ho Lee
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, South Korea,Division of Life Science, Gyeongsang National University, Jinju, South Korea,*Correspondence: Yadav Uprety, ; Woe-Yeon Kim, ; Sung-Ho Lee,
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12
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Lee ES, Park JH, Wi SD, Kang CH, Chi YH, Chae HB, Paeng SK, Ji MG, Kim WY, Kim MG, Yun DJ, Stacey G, Lee SY. Author Correction: Redox-dependent structural switch and CBF activation confer freezing tolerance in plants. Nat Plants 2022; 8:1493. [PMID: 36376505 DOI: 10.1038/s41477-022-01285-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Affiliation(s)
- Eun Seon Lee
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Joung Hun Park
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Seong Dong Wi
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Chang Ho Kang
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Yong Hun Chi
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Ho Byoung Chae
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Seol Ki Paeng
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Myung Geun Ji
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Min Gab Kim
- College of Pharmacy, Gyeongsang National University, Jinju, Korea
| | - Dae-Jin Yun
- Department of Biomedical Science & Engineering, Konkuk University, Seoul, Korea
| | - Gary Stacey
- Divisions of Plant Science and Biochemistry, University of Missouri, Columbia, MO, USA
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea.
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China.
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13
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Cha JY, Ahn G, Jeong SY, Shin GI, Ali I, Ji MG, Alimzhan A, Lee SY, Kim MG, Kim WY. Nucleoredoxin 1 positively regulates heat stress tolerance by enhancing the transcription of antioxidants and heat-shock proteins in tomato. Biochem Biophys Res Commun 2022; 635:12-18. [DOI: 10.1016/j.bbrc.2022.10.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 10/07/2022] [Indexed: 11/28/2022]
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14
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Choi C, Im JH, Lee J, Kwon SI, Kim WY, Park SR, Hwang DJ. OsDWD1 E3 ligase-mediated OsNPR1 degradation suppresses basal defense in rice. Plant J 2022; 112:966-981. [PMID: 36168109 DOI: 10.1111/tpj.15985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 09/05/2022] [Accepted: 09/07/2022] [Indexed: 06/16/2023]
Abstract
Many ubiquitin E3 ligases function in plant immunity. Here, we show that Oryza sativa (rice) DDB1 binding WD (OsDWD1) suppresses immune responses by targeting O. sativa non-expresser of pathogenesis-related gene 1 (OsNPR1) for degradation. Knock-down and overexpression experiments in rice plants showed that OsDWD1 is a negative regulator of the immune response and that OsNPR1 is a substrate of OsDWD1 and a substrate receptor of OsCRL4. After constructing the loss-of-function mutant OsDWD1R239A , we showed that the downregulation of OsNPR1 seen in rice lines overexpressing wild-type (WT) OsDWD1 (OsDWD1WT -ox) was compromised in OsDWD1R239A -ox lines, and that OsNPR1 upregulation enhanced resistance to pathogen infection, confirming that OsCRL4OsDWD1 regulates OsNPR1 protein levels. The enhanced disease resistance seen in OsDWD1 knock-down (OsDWD1-kd) lines contrasted with the reduced disease resistance in double knock-down (OsDWD1/OsNPR1-kd) lines, indicating that the enhanced disease resistance of OsDWD1-kd resulted from the accumulation of OsNPR1. Moreover, an in vivo heterologous protein degradation assay in Arabidopsis thaliana ddb1 mutants confirmed that the CUL4-based E3 ligase system can also influence OsNPR1 protein levels in Arabidopsis. Although OsNPR1 was degraded by the OsCRL4OsDWD1 -mediated ubiquitination system, the phosphodegron-motif-mutated NPR1 was partially degraded in the DWD1-ox protoplasts. This suggests that there might be another degradation process for OsNPR1. Taken together, these results indicate that OsDWD1 regulates OsNPR1 protein levels in rice to suppress the untimely activation of immune responses.
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Affiliation(s)
- Changhyun Choi
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874, Republic of Korea
| | - Jong Hee Im
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874, Republic of Korea
| | - Jinjeong Lee
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874, Republic of Korea
| | - Soon Il Kwon
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Sciences, Research Institute of Life Sciences, Gyeongsang National University, Jinju, 52825, Republic of Korea
| | - Sang Ryeol Park
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874, Republic of Korea
| | - Duk-Ju Hwang
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874, Republic of Korea
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15
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Uddin S, Bae D, Cha JY, Ahn G, Kim WY, Kim MG. Coronatine Induces Stomatal Reopening by Inhibiting Hormone Signaling Pathways. J Plant Biol 2022; 65:403-411. [DOI: 10.1007/s12374-022-09362-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 07/13/2022] [Accepted: 07/17/2022] [Indexed: 08/28/2023]
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16
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Cha JY, Jeong SY, Ahn G, Shin GI, Ji MG, Lee SC, Khakurel D, Macoy DM, Lee YB, Kim MG, Lee SY, Yun DJ, Kim WY. The thiol-reductase activity of YUCCA6 enhances nickel heavy metal stress tolerance in Arabidopsis. Front Plant Sci 2022; 13:1007542. [PMID: 36237515 PMCID: PMC9551240 DOI: 10.3389/fpls.2022.1007542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
Anthropogenic activities cause the leaching of heavy metals into groundwater and their accumulation in soil. Excess levels of heavy metals cause toxicity in plants, inducing the production of reactive oxygen species (ROS) and possible death caused by the resulting oxidative stress. Heavy metal stresses repress auxin biosynthesis and transport, inhibiting plant growth. Here, we investigated whether nickel (Ni) heavy metal toxicity is reduced by exogenous auxin application and whether Ni stress tolerance in Arabidopsis thaliana is mediated by the bifunctional enzyme YUCCA6 (YUC6), which functions as an auxin biosynthetic enzyme and a thiol-reductase (TR). We found that an application of up to 1 µM exogenous indole-3-acetic acid (IAA) reduces Ni stress toxicity. yuc6-1D, a dominant mutant of YUC6 with high auxin levels, was more tolerant of Ni stress than wild-type (WT) plants, despite absorbing significantly more Ni. Treatments of WT plants with YUCASIN, a specific inhibitor of YUC-mediated auxin biosynthesis, increased Ni toxicity; however yuc6-1D was not affected by YUCASIN and remained tolerant of Ni stress. This suggests that rather than the elevated IAA levels in yuc6-1D, the TR activity of YUC6 might be critical for Ni stress tolerance. The loss of TR activity in YUC6 caused by the point-mutation of Cys85 abolished the YUC6-mediated Ni stress tolerance. We also found that the Ni stress-induced ROS accumulation was inhibited in yuc6-1D plants, which consequently also showed reduced oxidative damage. An enzymatic assay and transcriptional analysis revealed that the peroxidase activity and transcription of PEROXIREDOXIN Q were enhanced by Ni stress to a greater level in yuc6-1D than in the WT. These findings imply that despite the need to maintain endogenous IAA levels for basal Ni stress tolerance, the TR activity of YUC6, not the elevated IAA levels, plays the predominant role inNi stress tolerance by lowering Ni-induced oxidative stress.
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Affiliation(s)
- Joon-Yung Cha
- Research Institute of Life Sciences, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Song Yi Jeong
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Gyeongik Ahn
- Research Institute of Life Sciences, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
| | - Gyeong-Im Shin
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Myung Geun Ji
- Research Institute of Life Sciences, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Sang Cheol Lee
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Dhruba Khakurel
- Department of Biology, Graduate School of Gyeongsang National University, Jinju, South Korea
| | - Donah Mary Macoy
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju, South Korea
| | - Yong Bok Lee
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju, South Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, South Korea
| | - Woe-Yeon Kim
- Research Institute of Life Sciences, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
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17
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Cha JY, Kim J, Jeong SY, Shin GI, Ji MG, Hwang JW, Khaleda L, Liao X, Ahn G, Park HJ, Kim DY, Pardo JM, Lee SY, Yun DJ, Somers DE, Kim WY. The Na +/H + antiporter SALT OVERLY SENSITIVE 1 regulates salt compensation of circadian rhythms by stabilizing GIGANTEA in Arabidopsis. Proc Natl Acad Sci U S A 2022; 119:e2207275119. [PMID: 35939685 PMCID: PMC9388102 DOI: 10.1073/pnas.2207275119] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 07/14/2022] [Indexed: 12/27/2022] Open
Abstract
The circadian clock is a timekeeping, homeostatic system that temporally coordinates all major cellular processes. The function of the circadian clock is compensated in the face of variable environmental conditions ranging from normal to stress-inducing conditions. Salinity is a critical environmental factor affecting plant growth, and plants have evolved the SALT OVERLY SENSITIVE (SOS) pathway to acquire halotolerance. However, the regulatory systems for clock compensation under salinity are unclear. Here, we show that the plasma membrane Na+/H+ antiporter SOS1 specifically functions as a salt-specific circadian clock regulator via GIGANTEA (GI) in Arabidopsis thaliana. SOS1 directly interacts with GI in a salt-dependent manner and stabilizes this protein to sustain a proper clock period under salinity conditions. SOS1 function in circadian clock regulation requires the salt-mediated secondary messengers cytosolic free calcium and reactive oxygen species, pointing to a distinct regulatory role for SOS1 in addition to its function as a transporter to maintain Na+ homeostasis. Our results demonstrate that SOS1 maintains homeostasis of the salt response under high or daily fluctuating salt levels. These findings highlight the genetic capacity of the circadian clock to maintain timekeeping activity over a broad range of salinity levels.
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Affiliation(s)
- Joon-Yung Cha
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Jeongsik Kim
- Faculty of Science Education and Interdisciplinary Graduate Program in Advanced Convergence Technology and Science, Jeju National University, Jeju 63243, Republic of Korea
- Department of Molecular Genetics, The Ohio State University, Columbus, OH 43210
| | - Song Yi Jeong
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Gyeong-Im Shin
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Myung Geun Ji
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Ji-Won Hwang
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Laila Khaleda
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Xueji Liao
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Gyeongik Ahn
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Hee-Jin Park
- Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Dong Young Kim
- College of Pharmacy, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Jose M. Pardo
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and Universidad de Sevilla, Seville 41092, Spain
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
- Key Laboratory of Molecular Epigenetics of the Ministry of Education, Northeast Normal University, Changchun 130024, China
| | - David E. Somers
- Department of Molecular Genetics, The Ohio State University, Columbus, OH 43210
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Graduate School of Gyeongsang National University, Jinju 52828, Republic of Korea
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
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18
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Macoy DMJ, Uddin S, Ahn G, Peseth S, Ryu GR, Cha JY, Lee JY, Bae D, Paek SM, Chung HJ, Mackey D, Lee SY, Kim WY, Kim MG. Effect of Hydroxycinnamic Acid Amides, Coumaroyl Tyramine and Coumaroyl Tryptamine on Biotic Stress Response in Arabidopsis. J Plant Biol 2022; 65:145-155. [DOI: 10.1007/s12374-021-09341-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/26/2021] [Accepted: 11/03/2021] [Indexed: 08/28/2023]
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19
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Ahn G, Jung IJ, Cha JY, Jeong SY, Shin GI, Ji MG, Kim MG, Lee SY, Kim WY. Phytochrome B Positively Regulates Red Light-Mediated ER Stress Response in Arabidopsis. Front Plant Sci 2022; 13:846294. [PMID: 35283886 PMCID: PMC8905361 DOI: 10.3389/fpls.2022.846294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
Light plays a crucial role in plant growth and development, and light signaling is integrated with various stress responses to adapt to different environmental changes. During this process, excessive protein synthesis overwhelms the protein-folding ability of the endoplasmic reticulum (ER), causing ER stress. Although crosstalk between light signaling and ER stress response has been reported in plants, the molecular mechanisms underlying this crosstalk are poorly understood. Here, we demonstrate that the photoreceptor phytochrome B (phyB) induces the expression of ER luminal protein chaperones as well as that of unfolded protein response (UPR) genes. The phyB-5 mutant was less sensitive to tunicamycin (TM)-induced ER stress than were the wild-type plants, whereas phyB-overexpressing plants displayed a more sensitive phenotype under white light conditions. ER stress response genes (BiP2 and BiP3), UPR-related bZIP transcription factors (bZIP17, bZIP28, and bZIP60), and programmed cell death (PCD)-associated genes (OXI1, NRP1, and MC8) were upregulated in phyB-overexpressing plants, but not in phyB-5, under ER stress conditions. The ER stress-sensitive phenotype of phyB-5 under red light conditions was eliminated with a reduction in photo-equilibrium by far-red light and darkness. The N-terminal domain of phyB is essential for signal transduction of the ER stress response in the nucleus, which is similar to light signaling. Taken together, our results suggest that phyB integrates light signaling with the UPR to relieve ER stress and maintain proper plant growth.
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Affiliation(s)
- Gyeongik Ahn
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Science, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
| | - In Jung Jung
- National Institute of Wildlife Disease Control and Prevention (NIWDC), Ministry of Environment, Gwangju, South Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Science, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
| | - Song Yi Jeong
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Science, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
| | - Gyeong-Im Shin
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Science, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
| | - Myung Geun Ji
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Science, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju, South Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21 Four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Science, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
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20
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Wi SD, Lee ES, Park JH, Chae HB, Paeng SK, Bae SB, Phan TKA, Kim WY, Yun DJ, Lee SY. Redox-mediated structural and functional switching of C-repeat binding factors enhances plant cold tolerance. New Phytol 2022; 233:1067-1073. [PMID: 34537981 DOI: 10.1111/nph.17745] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
C-repeat binding factors (CBFs) are key cold-responsive transcription factors that play pleiotropic roles in the cold acclimation, growth, and development of plants. Cold-sensitive cbf knockout mutants and cold-tolerant CBF overexpression lines exhibit abnormal phenotypes at warm temperatures, suggesting that CBF activity is precisely regulated, and a critical threshold level must be maintained for proper plant growth under normal conditions. Cold-inducible CBFs also exist in warm-climate plants but as inactive disulfide-bonded oligomers. However, upon translocation to the nucleus under a cold snap, the h2-isotype of cytosolic thioredoxin (Trx-h2), reduces the oxidized (inactive) CBF oligomers and the newly synthesized CBF monomers, thus producing reduced (active) CBF monomers. Thus, the redox-dependent structural switching and functional activation of CBFs protect plants under cold stress.
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Affiliation(s)
- Seong Dong Wi
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Eun Seon Lee
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Joung Hun Park
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Ho Byoung Chae
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Seol Ki Paeng
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Su Bin Bae
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Thi Kieu Anh Phan
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
| | - Dae-Jin Yun
- Department of Biomedical Science & Engineering, Konkuk University, Seoul, 05029, Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Korea
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21
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Ahn G, Cha JY, Lee JW, Park G, Shin GI, Song SJ, Ryu G, Hwang I, Kim MG, Kim WY. Production of a Bacteria-like Particle Vaccine Targeting Rock Bream ( Oplegnathus fasciatus) Iridovirus Using Nicotiana benthamiana. J Plant Biol 2021; 65:21-28. [PMID: 34602836 PMCID: PMC8477727 DOI: 10.1007/s12374-021-09328-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 07/31/2021] [Accepted: 08/03/2021] [Indexed: 06/13/2023]
Abstract
Viral diseases are extremely widespread infections that change constantly through mutations. To produce vaccines against viral diseases, transient expression systems are employed, and Nicotiana benthamiana (tobacco) plants are a rapidly expanding platform. In this study, we developed a recombinant protein vaccine targeting the major capsid protein (MCP) of iridovirus fused with the lysine motif (LysM) and coiled-coil domain of coronin 1 (ccCor1) for surface display using Lactococcus lactis. The protein was abundantly produced in N. benthamiana in its N-glycosylated form. Total soluble proteins isolated from infiltrated N. benthamiana leaves were treated sequentially with increasing ammonium sulfate solution, and recombinant MCP mainly precipitated at 40-60%. Additionally, affinity chromatography using Ni-NTA resin was applied for further purification. Native structure analysis using size exclusion chromatography showed that recombinant MCP existed in a large oligomeric form. A minimum OD600 value of 0.4 trichloroacetic acid (TCA)-treated L. lactis was required for efficient recombinant MCP display. Immunogenicity of recombinant MCP was assessed in a mouse model through enzyme-linked immunosorbent assay (ELISA) with serum-injected recombinant MCP-displaying L. lactis. In summary, we developed a plant-based recombinant vaccine production system combined with surface display on L. lactis.
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Affiliation(s)
- Gyeongik Ahn
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju, 52828 Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju, 52828 Republic of Korea
| | - Jeong Won Lee
- Department of Agricultural Chemistry and Food Science and Technology, Gyeongsang National University, Jinju, 52828 Republic of Korea
| | - Gyeongran Park
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju, 52828 Republic of Korea
| | - Gyeong-Im Shin
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju, 52828 Republic of Korea
| | - Shi-Jian Song
- Department of Life Science, Pohang University of Science and Technology, Pohang, 37673 Republic of Korea
| | - Gyeongryul Ryu
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju, 52828 Republic of Korea
| | - Inhwan Hwang
- Department of Life Science, Pohang University of Science and Technology, Pohang, 37673 Republic of Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju, 52828 Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 Four), Institute of Agricultural and Life Science, Research Institute of Life Sciences, Gyeongsang National University, Jinju, 52828 Republic of Korea
- Department of Agricultural Chemistry and Food Science and Technology, Gyeongsang National University, Jinju, 52828 Republic of Korea
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Lee J, Choi B, Yun A, Son N, Ahn G, Cha JY, Kim WY, Hwang I. Long-term abscisic acid promotes golden2-like1 degradation through constitutive photomorphogenic 1 in a light intensity-dependent manner to suppress chloroplast development. Plant Cell Environ 2021; 44:3034-3048. [PMID: 34129248 DOI: 10.1111/pce.14130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/12/2021] [Accepted: 06/12/2021] [Indexed: 05/14/2023]
Abstract
Abiotic stress, a serious threat to plants, occurs for extended periods in nature. Abscisic acid (ABA) plays a critical role in abiotic stress responses in plants. Therefore, stress responses mediated by ABA have been studied extensively, especially in short-term responses. However, long-term stress responses mediated by ABA remain largely unknown. To elucidate the mechanism by which plants respond to prolonged abiotic stress, we used long-term ABA treatment that activates the signalling against abiotic stress such as dehydration and investigated mechanisms underlying the responses. Long-term ABA treatment activates constitutive photomorphogenic 1 (COP1). Active COP1 mediates the ubiquitination of golden2-like1 (GLK1) for degradation, contributing to lowering expression of photosynthesis-associated genes such as glutamyl-tRNA reductase (HEMA1) and protochlorophyllide oxidoreductase A (PORA), resulting in the suppression of chloroplast development. Moreover, COP1 activation and GLK1 degradation upon long-term ABA treatment depend on light intensity. Additionally, plants with COP1 mutation or exposed to higher light intensity were more sensitive to salt stress. Collectively, our results demonstrate that long-term treatment of ABA leads to activation of COP1 in a light intensity-dependent manner for GLK1 degradation to suppress chloroplast development, which we propose to constitute a mechanism of balancing normal growth and stress responses upon the long-term abiotic stress.
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Affiliation(s)
- Juhun Lee
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, South Korea
| | - Bongsoo Choi
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, South Korea
| | - Areum Yun
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, South Korea
| | - Namil Son
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, South Korea
| | - Gyeongik Ahn
- Division of Applied Life Science (BK21Plus), RILS & IALS, Gyeongsang National University, Jinju, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21Plus), RILS & IALS, Gyeongsang National University, Jinju, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), RILS & IALS, Gyeongsang National University, Jinju, Republic of Korea
| | - Inhwan Hwang
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, South Korea
- Department of Life Science, Pohang University of Science and Technology, Pohang, South Korea
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23
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Lee ES, Park JH, Wi SD, Chae HB, Paeng SK, Bae SB, Phan KAT, Kim MG, Kwak SS, Kim WY, Yun DJ, Lee SY. Demyristoylation of the Cytoplasmic Redox Protein Trx-h2 Is Critical for Inducing a Rapid Cold Stress Response in Plants. Antioxidants (Basel) 2021; 10:antiox10081287. [PMID: 34439534 PMCID: PMC8389195 DOI: 10.3390/antiox10081287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/09/2021] [Accepted: 08/11/2021] [Indexed: 12/27/2022] Open
Abstract
In Arabidopsis, the cytosolic redox protein thioredoxin h2 (Trx-h2) is anchored to the cytoplasmic endomembrane through the myristoylated second glycine residue (Gly2). However, under cold stress, the cytosolic Trx-h2 is rapidly translocated to the nucleus, where it interacts with and reduces the cold-responsive C-repeat-binding factors (CBFs), thus activating cold-responsive (COR) genes. In this study, we investigated the significance of fatty acid modification of Trx-h2 under cold conditions by generating transgenic Arabidopsis lines in the trx-h2 mutant background, overexpressing Trx-h2 (Trx-h2OE/trx-h2) and its point mutation variant Trx-h2(G/A) [Trx-h2(G/A)OE/trx-h2], in which the Gly2 was replaced by alanine (Ala). Due to the lack of Gly2, Trx-h2(G/A) was incapable of myristoylation, and a part of Trx-h2(G/A) localized to the nucleus even under warm temperature. As no time is spent on the demyristoylation and subsequent nuclear translocation of Trx-h2(G/A) under a cold snap, the ability of Trx-h2(G/A) to protect plants from cold stress was greater than that of Trx-h2. Additionally, COR genes were up-regulated earlier in Trx-h2(G/A)2OE/trx-h2 plants than in Trx-h2OE/trx-h2 plants under cold stress. Consequently, Trx-h2(G/A)2OE/trx-h2 plants showed greater cold tolerance than Col-0 (wild type) and Trx-h2OE/trx-h2 plants. Overall, our results clearly demonstrate the significance of the demyristoylation of Trx-h2 in enhancing plant cold/freezing tolerance.
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Affiliation(s)
- Eun Seon Lee
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea; (E.S.L.); (J.H.P.); (S.D.W.); (H.B.C.); (S.K.P.); (S.B.B.); (K.A.T.P.); (W.-Y.K.)
| | - Joung Hun Park
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea; (E.S.L.); (J.H.P.); (S.D.W.); (H.B.C.); (S.K.P.); (S.B.B.); (K.A.T.P.); (W.-Y.K.)
| | - Seong Dong Wi
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea; (E.S.L.); (J.H.P.); (S.D.W.); (H.B.C.); (S.K.P.); (S.B.B.); (K.A.T.P.); (W.-Y.K.)
| | - Ho Byoung Chae
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea; (E.S.L.); (J.H.P.); (S.D.W.); (H.B.C.); (S.K.P.); (S.B.B.); (K.A.T.P.); (W.-Y.K.)
| | - Seol Ki Paeng
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea; (E.S.L.); (J.H.P.); (S.D.W.); (H.B.C.); (S.K.P.); (S.B.B.); (K.A.T.P.); (W.-Y.K.)
| | - Su Bin Bae
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea; (E.S.L.); (J.H.P.); (S.D.W.); (H.B.C.); (S.K.P.); (S.B.B.); (K.A.T.P.); (W.-Y.K.)
| | - Kieu Anh Thi Phan
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea; (E.S.L.); (J.H.P.); (S.D.W.); (H.B.C.); (S.K.P.); (S.B.B.); (K.A.T.P.); (W.-Y.K.)
| | - Min Gab Kim
- College of Pharmacy, Gyeongsang National University, Jinju 52828, Korea;
| | - Sang-Soo Kwak
- Plant Systems Engineering Research Center, KRIBB, Daejeon 34141, Korea;
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea; (E.S.L.); (J.H.P.); (S.D.W.); (H.B.C.); (S.K.P.); (S.B.B.); (K.A.T.P.); (W.-Y.K.)
| | - Dae-Jin Yun
- Department of Biomedical Science & Engineering, Konkuk University, Seoul 05029, Korea;
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea; (E.S.L.); (J.H.P.); (S.D.W.); (H.B.C.); (S.K.P.); (S.B.B.); (K.A.T.P.); (W.-Y.K.)
- Correspondence: ; Tel.: +82-55-772-1351; Fax: +82-55-759-9363
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Chae HB, Kim MG, Kang CH, Park JH, Lee ES, Lee SU, Chi YH, Paeng SK, Bae SB, Wi SD, Yun BW, Kim WY, Yun DJ, Mackey D, Lee SY. Redox sensor QSOX1 regulates plant immunity by targeting GSNOR to modulate ROS generation. Mol Plant 2021; 14:1312-1327. [PMID: 33962063 DOI: 10.1016/j.molp.2021.05.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 02/25/2021] [Accepted: 05/03/2021] [Indexed: 05/22/2023]
Abstract
Reactive oxygen signaling regulates numerous biological processes, including stress responses in plants. Redox sensors transduce reactive oxygen signals into cellular responses. Here, we present biochemical evidence that a plant quiescin sulfhydryl oxidase homolog (QSOX1) is a redox sensor that negatively regulates plant immunity against a bacterial pathogen. The expression level of QSOX1 is inversely correlated with pathogen-induced reactive oxygen species (ROS) accumulation. Interestingly, QSOX1 both senses and regulates ROS levels by interactingn with and mediating redox regulation of S-nitrosoglutathione reductase, which, consistent with previous findings, influences reactive nitrogen-mediated regulation of ROS generation. Collectively, our data indicate that QSOX1 is a redox sensor that negatively regulates plant immunity by linking reactive oxygen and reactive nitrogen signaling to limit ROS production.
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Affiliation(s)
- Ho Byoung Chae
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Min Gab Kim
- College of Pharmacy, Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju 52828, Korea
| | - Chang Ho Kang
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Joung Hun Park
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Eun Seon Lee
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Sang-Uk Lee
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea
| | - Yong Hun Chi
- Plant Propagation Team, Plant Production Division, Sejong National Arboretum, Sejong 30106, Korea
| | - Seol Ki Paeng
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Su Bin Bae
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Seong Dong Wi
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Byung-Wook Yun
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea
| | - Woe-Yeon Kim
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Korea
| | - David Mackey
- Department of Horticulture and Crop Science, Department of Molecular Genetics, and Center for Applied Plant Sciences, The Ohio State University, Columbus, OH 43210, USA.
| | - Sang Yeol Lee
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea; College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, P.R. China.
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25
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Song SJ, Shin GI, Noh J, Lee J, Kim DH, Ryu G, Ahn G, Jeon H, Diao HP, Park Y, Kim MG, Kim WY, Kim YJ, Sohn EJ, Song CS, Hwang I. Plant-based, adjuvant-free, potent multivalent vaccines for avian influenza virus via Lactococcus surface display. J Integr Plant Biol 2021; 63:1505-1520. [PMID: 34051041 DOI: 10.1111/jipb.13141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/26/2021] [Indexed: 05/28/2023]
Abstract
Influenza epidemics frequently and unpredictably break out all over the world, and seriously affect the breeding industry and human activity. Inactivated and live attenuated viruses have been used as protective vaccines but exhibit high risks for biosafety. Subunit vaccines enjoy high biosafety and specificity but have a few weak points compared to inactivated virus or live attenuated virus vaccines, especially in low immunogenicity. In this study, we developed a new subunit vaccine platform for a potent, adjuvant-free, and multivalent vaccination. The ectodomains of hemagglutinins (HAs) of influenza viruses were expressed in plants as trimers (tHAs) to mimic their native forms. tHAs in plant extracts were directly used without purification for binding to inactivated Lactococcus (iLact) to produce iLact-tHAs, an antigen-carrying bacteria-like particle (BLP). tHAs BLP showed strong immune responses in mice and chickens without adjuvants. Moreover, simultaneous injection of two different antigens by two different formulas, tHAH5N6 + H9N2 BLP or a combination of tHAH5N6 BLP and tHAH9N2 BLP, led to strong immune responses to both antigens. Based on these results, we propose combinations of plant-based antigen production and BLP-based delivery as a highly potent and cost-effective platform for multivalent vaccination for subunit vaccines.
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Affiliation(s)
- Shi-Jian Song
- Department of Life Science, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - Gyeong-Im Shin
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju, 660-701, Korea
| | | | - Jiho Lee
- Avian Disease Laboratory, College of Veterinary Medicine, Konkuk University, Seoul, 05029, Korea
| | - Deok-Hwan Kim
- Avian Disease Laboratory, College of Veterinary Medicine, Konkuk University, Seoul, 05029, Korea
| | - Gyeongryul Ryu
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju, 660-701, Korea
| | - Gyeongik Ahn
- Division of Applied Life Science (BK21 PLUS), Institute of Agriculture & Life Sciences, Gyeongsang National University, Jinju, 52828, Korea
| | - Hyungmin Jeon
- Department of Life Science, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - Hai-Ping Diao
- Department of Life Science, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - Youngmin Park
- Department of Life Science, Pohang University of Science and Technology, Pohang, 37673, Korea
- Bioapp, Inc., Pohang Technopark Complex, Pohang, 37668, Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju, 660-701, Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 PLUS), Institute of Agriculture & Life Sciences, Gyeongsang National University, Jinju, 52828, Korea
| | - Young-Jin Kim
- Department of Life Science, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - Eun-Ju Sohn
- Bioapp, Inc., Pohang Technopark Complex, Pohang, 37668, Korea
| | - Chang Seon Song
- KCAV Inc., Gwangjin-gu, 05029, Korea
- Avian Disease Laboratory, College of Veterinary Medicine, Konkuk University, Seoul, 05029, Korea
| | - Inhwan Hwang
- Department of Life Science, Pohang University of Science and Technology, Pohang, 37673, Korea
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26
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Lee ES, Park JH, Wi SD, Kang CH, Chi YH, Chae HB, Paeng SK, Ji MG, Kim WY, Kim MG, Yun DJ, Stacey G, Lee SY. Redox-dependent structural switch and CBF activation confer freezing tolerance in plants. Nat Plants 2021; 7:914-922. [PMID: 34155371 DOI: 10.1038/s41477-021-00944-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/12/2021] [Indexed: 05/20/2023]
Abstract
The activities of cold-responsive C-repeat-binding transcription factors (CBFs) are tightly controlled as they not only induce cold tolerance but also regulate normal plant growth under temperate conditions1-4. Thioredoxin h2 (Trx-h2)-a cytosolic redox protein identified as an interacting partner of CBF1-is normally anchored to cytoplasmic endomembranes through myristoylation at the second glycine residue5,6. However, after exposure to cold conditions, the demyristoylated Trx-h2 is translocated to the nucleus, where it reduces the oxidized (inactive) CBF oligomers and monomers. The reduced (active) monomers activate cold-regulated gene expression. Thus, in contrast to the Arabidopsis trx-h2 (AT5G39950) null mutant, Trx-h2 overexpression lines are highly cold tolerant. Our findings reveal the mechanism by which cold-mediated redox changes induce the structural switching and functional activation of CBFs, therefore conferring plant cold tolerance.
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Affiliation(s)
- Eun Seon Lee
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Joung Hun Park
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Seong Dong Wi
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Chang Ho Kang
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Yong Hun Chi
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Ho Byoung Chae
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Seol Ki Paeng
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Myung Geun Ji
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea
| | - Min Gab Kim
- College of Pharmacy, Gyeongsang National University, Jinju, Korea
| | - Dae-Jin Yun
- Department of Biomedical Science & Engineering, Konkuk University, Seoul, Korea
| | - Gary Stacey
- Divisions of Plant Science and Biochemistry, University of Missouri, Columbia, MO, USA
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21+) and PMBBRC, Gyeongsang National University, Jinju, Korea.
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China.
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Tian W, Wang R, Bo C, Yu Y, Zhang Y, Shin GI, Kim WY, Wang L. SDC mediates DNA methylation-controlled clock pace by interacting with ZTL in Arabidopsis. Nucleic Acids Res 2021; 49:3764-3780. [PMID: 33675668 PMCID: PMC8053106 DOI: 10.1093/nar/gkab128] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 02/13/2021] [Accepted: 02/16/2021] [Indexed: 12/29/2022] Open
Abstract
Molecular bases of eukaryotic circadian clocks mainly rely on transcriptional-translational feedback loops (TTFLs), while epigenetic codes also play critical roles in fine-tuning circadian rhythms. However, unlike histone modification codes that play extensive and well-known roles in the regulation of circadian clocks, whether DNA methylation (5mC) can affect the circadian clock, and the associated underlying molecular mechanisms, remains largely unexplored in many organisms. Here we demonstrate that global genome DNA hypomethylation can significantly lengthen the circadian period of Arabidopsis. Transcriptomic and genetic evidence demonstrate that SUPPRESSOR OF drm1 drm2 cmt3 (SDC), encoding an F-box containing protein, is required for the DNA hypomethylation-tuned circadian clock. Moreover, SDC can physically interact with another F-box containing protein ZEITLUPE (ZTL) to diminish its accumulation. Genetic analysis further revealed that ZTL and its substrate TIMING OF CAB EXPRESSION 1 (TOC1) likely act downstream of DNA methyltransferases to control circadian rhythm. Together, our findings support the notion that DNA methylation is important to maintain proper circadian pace in Arabidopsis, and further established that SDC links DNA hypomethylation with a proteolytic cascade to assist in tuning the circadian clock.
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Affiliation(s)
- Wenwen Tian
- Key Laboratory of Plant Molecular Physiology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Ruyi Wang
- Key Laboratory of Plant Molecular Physiology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, People's Republic of China
| | - Cunpei Bo
- Key Laboratory of Plant Molecular Physiology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yingjun Yu
- Key Laboratory of Plant Molecular Physiology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yuanyuan Zhang
- Key Laboratory of Plant Molecular Physiology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, People's Republic of China
| | - Gyeong-Im Shin
- Division of Applied Life Science (BK21Plus), Research Institute of Life Sciences (RILS) and Institute of Agricultural and Life Science(IALS), Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), Research Institute of Life Sciences (RILS) and Institute of Agricultural and Life Science(IALS), Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Lei Wang
- Key Laboratory of Plant Molecular Physiology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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Ban YJ, Song YH, Kim JY, Cha JY, Ali I, Baiseitova A, Shah AB, Kim WY, Park KH. A Significant Change in Free Amino Acids of Soybean ( Glycine max L. Merr) through Ethylene Application. Molecules 2021; 26:1128. [PMID: 33672673 PMCID: PMC7924343 DOI: 10.3390/molecules26041128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/12/2021] [Accepted: 02/18/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, the changes in free amino acids of soybean leaves after ethylene application were characterized based on quantitative and metabolomic analyses. All essential and nonessential amino acids in soybean leaves were enhanced by fivefold (250 to 1284 mg/100 g) and sixfold (544 to 3478 mg/100 g), respectively, via ethylene application. In particular, it was found that asparagine is the main component, comprising approximately 41% of the total amino acids with a twenty-five fold increase (78 to 1971 mg/100 g). Moreover, arginine and branched chain amino acids (Val, Leu, and Ile) increased by about 14 and 2-5 times, respectively. The increase in free amino acid in stem was also similar to the leaves. The metabolites in treated and untreated soybean leaves were systematically identified by gas chromatography-mass spectrometry (GC-MS), and partial variance discriminant analysis (PLS-DA) scores and heat map analysis were given to understand the changes of each metabolite. The application of ethylene may provide good nutrient potential for soybean leaves.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Ki Hun Park
- Division of Applied Life Science (BK21 plus), IALS, RILS, Gyeongsang National University, Jinju 52828, Korea; (Y.J.B.); (Y.H.S.); (J.Y.K.); (J.Y.C.); (I.A.); (A.B.); (A.B.S.); (W.-Y.K.)
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29
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Beck W, Rose TL, Milowsky MI, Vincent BG, Klomp J, Kim WY. Age is associated with response to immune checkpoint blockade in advanced urothelial carcinoma. Urol Oncol 2020. [DOI: 10.1016/j.urolonc.2020.10.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Jing W, Uddin S, Chakraborty R, Van Anh DT, Macoy DM, Park SO, Ryu GR, Kim YH, Cha J, Kim WY, Kim MG. Molecular characterization of HEXOKINASE1 in plant innate immunity. Appl Biol Chem 2020; 63:76. [DOI: 10.1186/s13765-020-00560-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/03/2020] [Indexed: 08/28/2023]
Abstract
AbstractHexokinase1 (HXK1) is an Arabidopsis glucose sensor that has a variety of roles during plant growth and devlopment, including during germination, flowering, and senescence. HXK1 also acts as a positive regulator of plant immune responses. Previous research suggested that HXK1 might influence plant immune responses via responses to glucose. Plant immune responses are governed by two main pathways: PAMP-triggered immunity (PTI) and effector-triggered immunity (ETI). PTI involves the recognition of Pathogen-Associated Molecular Patterns (PAMPs) and leads to increased callose formation and accumulation of pathogenesis response (PR) proteins. ETI acts in response to effectors secreted by Gram-negative bacteria. During ETI, the membrane-localized protein RPM1-interacting protein 4 (RIN4) becomes phosphorylated in reponse to interactions with effectors and mediates the downstream response. In this study, the effects of glucose on plant immune responses against infection with Pseudomonas syringae pv. tomato DC3000 and other P. syringae strains were investigated in the presence and absence of HXK1. Infiltration of leaves with glucose prior to infection led to decreases in bacterial populations and reductions in disease symptoms in wild-type Arabidopsis plants, indicating that glucose plays a role in plant immunity. Both PTI and ETI responses were affected. However, these effects were not observed in a hxk1 mutant, indicating that the effects of glucose on plant immune responses were mediated by HXK1-related pathways.
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Chakraborty R, Uddin S, Macoy DM, Park SO, Van Anh DT, Ryu GR, Kim YH, Lee JY, Cha JY, Kim WY, Lee SY, Kim MG. Inositol-requiring enzyme 1 (IRE1) plays for AvrRpt2-triggered immunity and RIN4 cleavage in Arabidopsis under endoplasmic reticulum (ER) stress. Plant Physiol Biochem 2020; 156:105-114. [PMID: 32927152 DOI: 10.1016/j.plaphy.2020.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 08/25/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
Many stresses induce the accumulation of unfolded and misfolded proteins in the endoplasmic reticulum, a phenomenon known as ER stress. In response to ER stress, cells initiate a protective response, known as unfolded protein response (UPR), to maintain cellular homeostasis. The UPR sensor, inositol-requiring enzyme 1 (IRE1), catalyzes the cytoplasmic splicing of bZIP transcription factor-encoding mRNAs to activate the UPR signaling pathway. Recently, we reported that pretreatment of Arabidopsis thaliana plants with tunicamycin, an ER stress inducer, increased their susceptibility to bacterial pathogens; on the other hand, IRE1 deficient mutants were susceptible to Pseudomonas syringae pv. maculicola (Psm) and failed to induce salicylic acid (SA)-mediated systemic acquired resistance. However, the functional relationship of IRE1 with the pathogen and TM treatment remains unknown. In the present study, we showed that bacterial pathogen-associated molecular patterns (PAMPs) induced IRE1 expression; however, PAMP-triggered immunity (PTI) response such as callose deposition, PR1 protein accumulation, or Pst DC3000 hrcC growth was not altered in ire1 mutants. We observed that IRE1 enhanced plant immunity against the bacterial pathogen P. syringae pv. tomato DC3000 (Pst DC3000) under ER stress. Moreover, TM-pretreated ire1 mutants were more susceptible to the avirulent strain Pst DC3000 (AvrRpt2) and showed greater cell death than wild-type plants during effector-triggered immunity (ETI). Additionally, Pst DC3000 (AvrRpt2)-mediated RIN4 degradation was reduced in ire1 mutants under TM-induced ER stress. Collectively, our results reveal that IRE1 plays a pivotal role in the immune signaling pathway to activate plant immunity against virulent and avirulent bacterial strains under ER stress.
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Affiliation(s)
- Rupak Chakraborty
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Shahab Uddin
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Donah Mary Macoy
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Si On Park
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Duong Thu Van Anh
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Gyeong Ryul Ryu
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Young Hun Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Jong-Yeol Lee
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Sciences (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Sciences (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Sang Yeol Lee
- Division of Applied Life Sciences (BK21+) and PMBBRC, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 660-701, Republic of Korea.
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32
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Lim CJ, Park J, Shen M, Park HJ, Cheong MS, Park KS, Baek D, Bae MJ, Ali A, Jan M, Lee SY, Lee BH, Kim WY, Pardo JM, Yun DJ. The Histone-Modifying Complex PWR/HOS15/HD2C Epigenetically Regulates Cold Tolerance. Plant Physiol 2020; 184:1097-1111. [PMID: 32732349 PMCID: PMC7536694 DOI: 10.1104/pp.20.00439] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 07/21/2020] [Indexed: 05/04/2023]
Abstract
Cold stress is a major environmental stress that severely affects plant growth and crop productivity. Arabidopsis (Arabidopsis thaliana) HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENE15 (HOS15) is a substrate receptor of the CULLIN4-based CLR4 ubiquitin E3 ligase complex, which epigenetically regulates cold tolerance by degrading HISTONE DEACETYLASE2C (HD2C) to switch from repressive to permissive chromatin structure in response to cold stress. In this study, we characterized a HOS15-binding protein, POWERDRESS (PWR), and analyzed its function in the cold stress response. PWR loss-of-function plants (pwr) showed lower expression of cold-regulated (COR) genes and sensitivity to freezing. PWR interacts with HD2C through HOS15, and cold-induced HD2C degradation by HOS15 is diminished in the pwr mutant. The association of HOS15 and HD2C to promoters of cold-responsive COR genes was dependent on PWR. Consistent with these observations, the high acetylation levels of histone H3 by cold-induced and HOS15-mediated HD2C degradation were significantly reduced in pwr under cold stress. PWR also interacts with C-repeat element-binding factor transcription factors to modulate their cold-induced binding to the promoter of COR genes. Collectively, our data signify that the PWR-HOS15-HD2C histone-modifying complex regulates the expression of COR genes and the freezing tolerance of plants.
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Affiliation(s)
- Chae Jin Lim
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Republic of Korea
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Junghoon Park
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Republic of Korea
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Mingzhe Shen
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Hee Jin Park
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Republic of Korea
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Mi Sun Cheong
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Ki Suk Park
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Dongwon Baek
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Min Jae Bae
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Ahktar Ali
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Republic of Korea
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Masood Jan
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Republic of Korea
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Byeong-Ha Lee
- Department of Life Science, Sogang University, Seoul 04107, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Jose M Pardo
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas and Universidad de Sevilla, 41092 Seville, Spain
| | - Dea-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
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33
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Cha JY, Kang SH, Ali I, Lee SC, Ji MG, Jeong SY, Shin GI, Kim MG, Jeon JR, Kim WY. Humic acid enhances heat stress tolerance via transcriptional activation of Heat-Shock Proteins in Arabidopsis. Sci Rep 2020; 10:15042. [PMID: 32929162 PMCID: PMC7490348 DOI: 10.1038/s41598-020-71701-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 07/27/2020] [Indexed: 01/09/2023] Open
Abstract
Humic acid (HA) is composed of a complex supramolecular association and is produced by humification of organic matters in soil environments. HA not only improves soil fertility, but also stimulates plant growth. Although numerous bioactivities of HA have been reported, the molecular evidences have not yet been elucidated. Here, we performed transcriptomic analysis to identify the HA-prompted molecular mechanisms in Arabidopsis. Gene ontology enrichment analysis revealed that HA up-regulates diverse genes involved in the response to stress, especially to heat. Heat stress causes dramatic induction in unique gene families such as Heat-Shock Protein (HSP) coding genes including HSP101, HSP81.1, HSP26.5, HSP23.6, and HSP17.6A. HSPs mainly function as molecular chaperones to protect against thermal denaturation of substrates and facilitate refolding of denatured substrates. Interestingly, wild-type plants grown in HA were heat-tolerant compared to those grown in the absence of HA, whereas Arabidopsis HSP101 null mutant (hot1) was insensitive to HA. We also validated that HA accelerates the transcriptional expression of HSPs. Overall, these results suggest that HSP101 is a molecular target of HA promoting heat-stress tolerance in Arabidopsis. Our transcriptome information contributes to understanding the acquired genetic and agronomic traits by HA conferring tolerance to environmental stresses in plants.
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Affiliation(s)
- Joon-Yung Cha
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Life Sciences (RILS), Gyeongsang National University, Jinju, 52828, Republic of Korea. .,Department of Agricultural Chemistry and Food Science & Technology, Institute of Agriculture and Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea.
| | - Sang-Ho Kang
- Genomics Division, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874, Republic of Korea
| | - Imdad Ali
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Life Sciences (RILS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Sang Cheol Lee
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Life Sciences (RILS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Myung Geun Ji
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Life Sciences (RILS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Song Yi Jeong
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Life Sciences (RILS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Gyeong-Im Shin
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Life Sciences (RILS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Jong-Rok Jeon
- Department of Agricultural Chemistry and Food Science & Technology, Institute of Agriculture and Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Life Sciences (RILS), Gyeongsang National University, Jinju, 52828, Republic of Korea. .,Department of Agricultural Chemistry and Food Science & Technology, Institute of Agriculture and Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea.
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Baek D, Kim WY, Cha JY, Park HJ, Shin G, Park J, Lim CJ, Chun HJ, Li N, Kim DH, Lee SY, Pardo JM, Kim MC, Yun DJ. The GIGANTEA-ENHANCED EM LEVEL Complex Enhances Drought Tolerance via Regulation of Abscisic Acid Synthesis. Plant Physiol 2020; 184:443-458. [PMID: 32690755 PMCID: PMC7479899 DOI: 10.1104/pp.20.00779] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 07/09/2020] [Indexed: 05/22/2023]
Abstract
Drought is one of the most critical environmental stresses limiting plant growth and crop productivity. The synthesis and signaling of abscisic acid (ABA), a key phytohormone in the drought stress response, is under photoperiodic control. GIGANTEA (GI), a key regulator of photoperiod-dependent flowering and the circadian rhythm, is also involved in the signaling pathways for various abiotic stresses. In this study, we isolated ENHANCED EM LEVEL (EEL)/basic Leu zipper 12, a transcription factor involved in ABA signal responses, as a GI interactor in Arabidopsis (Arabidopsis thaliana). The diurnal expression of 9-CIS-EPOXYCAROTENOID DIOXYGENASE 3 (NCED3), a rate-limiting ABA biosynthetic enzyme, was reduced in the eel, gi-1, and eel gi-1 mutants under normal growth conditions. Chromatin immunoprecipitation and electrophoretic mobility shift assays revealed that EEL and GI bind directly to the ABA-responsive element motif in the NCED3 promoter. Furthermore, the eel, gi-1, and eel gi-1 mutants were hypersensitive to drought stress due to uncontrolled water loss. The transcript of NCED3, endogenous ABA levels, and stomatal closure were all reduced in the eel, gi-1, and eel gi-1 mutants under drought stress. Our results suggest that the EEL-GI complex positively regulates diurnal ABA synthesis by affecting the expression of NCED3, and contributes to the drought tolerance of Arabidopsis.
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Affiliation(s)
- Dongwon Baek
- Division of Applied Life Science (BK21 PLUS), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 PLUS), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21 PLUS), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Korea
| | - Hee Jin Park
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Korea
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Korea
| | - Gilok Shin
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Korea
| | - Junghoon Park
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Korea
| | - Chae Jin Lim
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Korea
| | - Hyun Jin Chun
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Korea
| | - Ning Li
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China
| | - Doh Hoon Kim
- College of Life Science and Natural Resources, Dong-A University, Busan 49315, Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21 PLUS), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea
| | - Jose M Pardo
- Instituto de Bioquímica Vegetal y Fotosíntesis, cicCartuja, CSIC-Universidad de Sevilla, Sevilla 41092, Spain
| | - Min Chul Kim
- Division of Applied Life Science (BK21 PLUS), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Korea
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Korea
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Yoon HY, Jeong HJ, Cha JY, Choi M, Jang KS, Kim WY, Kim MG, Jeon JR. Structural variation of humic-like substances and its impact on plant stimulation: Implication for structure-function relationship of soil organic matters. Sci Total Environ 2020; 725:138409. [PMID: 32464747 DOI: 10.1016/j.scitotenv.2020.138409] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/30/2020] [Accepted: 04/01/2020] [Indexed: 06/11/2023]
Abstract
Here, five aromatic monomers, one bearing a long alkyl chain [3-pentadecylphenol (3-PP)], the second bearing a polycyclic aromatic hydrocarbon [dihydroxynaphthalene (DHN)], the third bearing an organic amine [l-3,4-dihydroxyphenylalanine (l-DOPA)], the fourth bearing a carboxylic acid [vanillic acid (VA)], and the fifth bearing a phenol [catechol (CA)] were oxidatively coupled to produce four humic-like substances (3-PP, DHN, l-DOPA, and CAVA products) to mimic the diverse organic architectures of natural humus. Analysis using several methods, including SEM, EPR, elemental analysis, FT-IR-ATR, 13C NMR and anti-oxidant capability, revealed that each of the monomeric structures was well incorporated into the corresponding humic-like substances. Seed germination acceleration and NaCl-involved abiotic stress resistance of Arabidopsis thaliana were then tested to determine whether the different structures resulted in different levels of plant stimulation. The l-DOPA, CAVA and DHN-based materials showed enhanced stimulatory activities compared with no treatment, whereas the effects of the 3-PP-based materials were meager. Interestingly, high-resolution (15 T) ESI FT-ICR mass spectrometry-based van Krevelen diagrams clearly showed that the presence of molecules with H/C and O/C ratios ranging from 0.5 to 1.0 and 0.2 to 0.4, respectively, could be connected with such biological actions. Here, the l-DOPA sample showed the highest content of such molecules, followed by the CAVA, DHN and 3-PP samples. Next, the ability of l-DOPA and CAVA products to induce resistance in A. thaliana to a pathogen-related biotic stress was tested to confirm whether the proposed molecular features are associated with multi-stimulatory actions on plants. The expression level of pathogenesis-related protein 1 and inspection of plant morphology clearly revealed that both the l-DOPA and CAVA products stimulate plants to respond to biotic stresses. Size-exclusion chromatography together with NMR and IR data of both the materials strongly suggests that lignin-like supramolecular assemblages play an important role in versatile biological activities of humus.
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Affiliation(s)
- Ho Young Yoon
- Department of Agricultural Chemistry and Food Science & Technology, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Hae Jin Jeong
- Department of Agricultural Chemistry and Food Science & Technology, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21 Plus), Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Mira Choi
- Bio-Chemical Analysis Group, Korea Basic Science Institute, Cheongju 28119, Republic of Korea
| | - Kyoung-Soon Jang
- Bio-Chemical Analysis Group, Korea Basic Science Institute, Cheongju 28119, Republic of Korea
| | - Woe-Yeon Kim
- Department of Agricultural Chemistry and Food Science & Technology, Gyeongsang National University, Jinju 52828, Republic of Korea; Division of Applied Life Science (BK21 Plus), Gyeongsang National University, Jinju 52828, Republic of Korea; PMBBRC, Gyeongsang National University, Jinju 52828, Republic of Korea; IALS, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju 52828, Republic of Korea; PMBBRC, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Jong-Rok Jeon
- Department of Agricultural Chemistry and Food Science & Technology, Gyeongsang National University, Jinju 52828, Republic of Korea; IALS, Gyeongsang National University, Jinju 52828, Republic of Korea.
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Ji MG, Park HJ, Cha JY, Kim JA, Shin GI, Jeong SY, Lee ES, Yun DJ, Lee SY, Kim WY. Expression of Arabidopsis thaliana Thioredoxin-h2 in Brassica napus enhances antioxidant defenses and improves salt tolerance. Plant Physiol Biochem 2020; 147:313-321. [PMID: 31901883 DOI: 10.1016/j.plaphy.2019.12.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 12/25/2019] [Accepted: 12/26/2019] [Indexed: 05/16/2023]
Abstract
Salt stress limits crop productivity worldwide, particularly in arid and heavily irrigated regions. Salt stress causes oxidative stress, in which plant cells accumulate harmful levels of reactive oxygen species (ROS). Thioredoxins (Trxs; EC 1.8.4.8) are antioxidant proteins encoded by a ubiquitous multigene family. Arabidopsis thaliana Trx h-type proteins localize in the cytoplasm and other subcellular organelles, and function in plant responses to abiotic stresses and pathogen attack. Here, we isolated the Arabidopsis genes encoding two cytosolic h-type Trx proteins, AtTrx-h2 and AtTrx-h3 and generated transgenic oilseed rape (Brassica napus) plants overexpressing AtTrx-h2 or AtTrx-h3. Heterologous expression of AtTrx-h2 in B. napus conferred salt tolerance with plants grown on 50 mM NaCl having higher fresh weight and chlorophyll contents compared with controls in hydroponic growth system. By contrast, expression of AtTrx-h3 or the empty vector control did not improve salt tolerance. In addition, AtTrx-h2-overexpressing transgenic plants exhibited lower levels of hydrogen peroxide and higher activities of antioxidant enzymes including peroxidase, catalase, and superoxide dismutase, compared with the plants expressing the empty vector control or AtTrx-h3. These results suggest that AtTrx-h2 is a promising candidate for engineering or breeding crops with enhanced salt stress tolerance.
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Affiliation(s)
- Myung Geun Ji
- Division of Applied Life Science (BK21 Plus), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Hee Jin Park
- Institute of Glocal Disease Control, Konkuk University, Seoul, 05029, Republic of Korea; Department of Biomedical Science and Engineering, Konkuk University, Seoul, 05029, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21 Plus), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Jin A Kim
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874, Republic of Korea
| | - Gyeong-Im Shin
- Division of Applied Life Science (BK21 Plus), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Song Yi Jeong
- Division of Applied Life Science (BK21 Plus), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Eun Seon Lee
- PMBBRC, IALS & RILS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, 05029, Republic of Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21 Plus), Gyeongsang National University, Jinju, 52828, Republic of Korea; PMBBRC, IALS & RILS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 Plus), Gyeongsang National University, Jinju, 52828, Republic of Korea; PMBBRC, IALS & RILS, Gyeongsang National University, Jinju, 52828, Republic of Korea.
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Ray SK, Macoy DM, Kim WY, Lee SY, Kim MG. Role of RIN4 in Regulating PAMP-Triggered Immunity and Effector-Triggered Immunity: Current Status and Future Perspectives. Mol Cells 2019; 42:503-511. [PMID: 31362467 PMCID: PMC6681865 DOI: 10.14348/molcells.2019.2433] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 06/24/2019] [Accepted: 06/24/2019] [Indexed: 12/21/2022] Open
Abstract
As sessile organisms, plants have developed sophisticated system to defend themselves against microbial attack. Since plants do not have specialized immune cells, all plant cells appear to have the innate ability to recognize pathogens and turn on an appropriate defense response. The plant innate immune system has two major branches: PAMPs (pathogen associated molecular patterns)-triggered immunity (PTI) and effector-triggered immunity (ETI). The ability to discriminate between self and non-self is a fundamental feature of living organisms, and it is a prerequisite for the activation of plant defenses specific to microbial infection. Arabidopsis cells express receptors that detect extracellular molecules or structures of the microbes, which are called collectively PAMPs and activate PTI. However, nucleotidebinding site leucine-rich repeats (NB-LRR) proteins mediated ETI is induced by direct or indirect recognition of effector molecules encoded by avr genes. In Arabidopsis, plasmamembrane localized multifunctional protein RIN4 (RPM1interacting protein 4) plays important role in both PTI and ETI. Previous studies have suggested that RIN4 functions as a negative regulator of PTI. In addition, many different bacterial effector proteins modify RIN4 to destabilize plant immunity and several NB-LRR proteins, including RPM1 (resistance to Pseudomonas syringae pv. maculicola 1), RPS2 (resistance to P. syringae 2) guard RIN4. This review summarizes the current studies that have described signaling mechanism of RIN4 function, modification of RIN4 by bacterial effectors and different interacting partner of RIN4 in defense related pathway. In addition, the emerging role of the RIN4 in plant physiology and intercellular signaling as it presents in exosomes will be discussed.
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Affiliation(s)
- Sujit Kumar Ray
- College of Pharmacy, Research Institute of Pharmaceutical Science, and Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, Jinju 52828,
Korea
| | - Donah Mary Macoy
- College of Pharmacy, Research Institute of Pharmaceutical Science, and Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, Jinju 52828,
Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Life Science (RILS), Gyeongsang National University, Jinju 52828,
Korea
| | - Sang Yeol Lee
- Division of Applied Life Sciences (BK21 Plus), Graduate School of Gyeongsang National University, Jinju 52828,
Korea
| | - Min Gab Kim
- College of Pharmacy, Research Institute of Pharmaceutical Science, and Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, Jinju 52828,
Korea
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Kang HW, Kim WY, Jin SJ, Kim YH, Min TJ, Lee YS, Kim JH. Clinical evaluation of anesthesia for high-risk cesarean section at a tertiary medical center: retrospective study for 8 years (2009-2016). J Int Med Res 2019; 47:4365-4373. [PMID: 31331228 PMCID: PMC6753575 DOI: 10.1177/0300060519859749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective The number of high-risk pregnancies is increasing in tertiary medical centers. Therefore, we investigated perioperative outcomes based on risk factors to ascertain proper maternal and neonatal management. Methods We reviewed the medical records of patients receiving cesarean sections over an 8-year period. Clinical parameters for anesthesia and the neonatal outcome were compared among high-risk groups after subdivision by the number of clinical risk factors. The groups were as follows: group A (one risk factor), group B (two risk factors), and group C (three or more risk factors). Results Patient age, estimated blood loss (EBL), and volume of transfused red blood cell (RBC) were higher in group B than group A. Birth weight, 1- and 5-minute Apgar scores, and gestational age were lower while the frequency of neonatal intensive care unit (NICU) admission was higher in group B than group A. Group C patients were significantly older than group A or B patients. Birth weight, 1- and 5-minute Apgar scores and gestational age were significantly lower while frequency of NICU admission was higher in group C than group A and B. Conclusion The number of maternal risk factors was positively associated with adverse outcomes in the neonates.
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Affiliation(s)
- H W Kang
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea
| | - W Y Kim
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea
| | - S J Jin
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea
| | - Y H Kim
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea
| | - T J Min
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea
| | - Y S Lee
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea
| | - J H Kim
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea
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Lee JG, Yoon HY, Cha JY, Kim WY, Kim PJ, Jeon JR. Artificial humification of lignin architecture: Top-down and bottom-up approaches. Biotechnol Adv 2019; 37:107416. [PMID: 31323257 DOI: 10.1016/j.biotechadv.2019.107416] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 05/10/2019] [Accepted: 07/14/2019] [Indexed: 11/16/2022]
Abstract
Humic substances readily identifiable in the environment are involved in several biotic and abiotic reactions affecting carbon turnover, soil fertility, plant nutrition and stimulation, xenobiotic transformation and microbial respiration. Inspired by natural roles of humic substances, several applications of these substances, including crop stimulants, redox mediators, anti-oxidants, human medicines, environmental remediation and fish feeding, have been developed. The annual market for humic substances has grown rapidly for these reasons and due to eco-conscious features, but there is a limited supply of natural coal-related resources such as lignite and leonardite from which humic substances are extracted in bulk. The structural similarity between humic substances and lignin suggests that lignocellulosic refinery resulting in lignin residues as a by-product could be a potential candidate for a bulk source of humic-like substances, but structural differences between the two polymeric materials indicate that additional transformation procedures allowing lignin architecture to fully mimic commercial humic substances are required. In this review, we introduce the emerging concept of artificial humification of lignin-related materials as a promising strategy for lignin valorization. First, the core structural features of humic substances and the relationship between these features and the physicochemical properties, natural functions and versatile applications of the substances are described. In particular, the mechanism by which humic substances stimulate the growth of plants and hence can improve crop productivity is highlighted. Second, top-down and bottom-up transformation pathways for scalable humification of small lignin-derived phenols, technical lignins and lignin-containing plant residues are described in detail. Finally, future directions are suggested for research and development of artificial lignin humification to achieve alternative ways of producing customized analogues of humic substances.
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Affiliation(s)
- Jeong Gu Lee
- Division of Applied Life Science (BK21Plus), Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Ho Young Yoon
- Department of Agricultural Chemistry and Food Science & Technology, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21Plus), Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), Gyeongsang National University, Jinju 52828, Republic of Korea; Department of Agricultural Chemistry and Food Science & Technology, Gyeongsang National University, Jinju 52828, Republic of Korea; PMBBRC, Gyeongsang National University, Jinju 52828, Republic of Korea; RILS, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Pil Joo Kim
- Division of Applied Life Science (BK21Plus), Gyeongsang National University, Jinju 52828, Republic of Korea; Department of Agricultural Chemistry and Food Science & Technology, Gyeongsang National University, Jinju 52828, Republic of Korea; IALS, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Jong-Rok Jeon
- Department of Agricultural Chemistry and Food Science & Technology, Gyeongsang National University, Jinju 52828, Republic of Korea; IALS, Gyeongsang National University, Jinju 52828, Republic of Korea.
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Cha JY, Lee DY, Ali I, Jeong SY, Shin B, Ji H, Kim JS, Kim MG, Kim WY. Arabidopsis GIGANTEA negatively regulates chloroplast biogenesis and resistance to herbicide butafenacil. Plant Cell Rep 2019; 38:793-801. [PMID: 30968200 DOI: 10.1007/s00299-019-02409-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 03/28/2019] [Indexed: 06/09/2023]
Abstract
Arabidopsis GI negatively regulates chloroplast biogenesis and resistance to the herbicide butafenacil by enhanced activity and transcriptional levels of antioxidant enzymes Chloroplast biogenesis is blocked by retrograde signaling triggered by diverse internal and external cues, including sugar, reactive oxygen species (ROS), phytohormones, and abiotic stress. Efficient chloroplast biogenesis is essential for crop productivity due to its effect on photosynthetic efficiency, and is associated with agronomic traits such as insect/disease resistance, herbicide resistance, and abiotic stress tolerance. Here, we show that the circadian clock-controlled gene GIGANTEA (GI) regulates chloroplast biogenesis in Arabidopsis thaliana. The gi-2 mutant showed reduced sensitivity to the chloroplast biogenesis inhibitor lincomycin, maintaining high levels of photosynthetic proteins. By contrast, wild-type and GI-overexpressing plants were sensitive to lincomycin, with variegated leaves and reduced photosynthetic protein levels. GI is degraded by lincomycin, suggesting that GI is genetically linked to chloroplast biogenesis. The GI mutant alleles gi-1 and gi-2 were resistant to the herbicide butafenacil, which inhibits protoporphyrinogen IX oxidase activity and triggers ROS-mediated cell death via the accumulation of chlorophyll precursors. Butafenacil-mediated accumulation of superoxide anions and H2O2 was not detected in gi-1 or gi-2, as revealed by histochemical staining. The activities of the antioxidant enzymes superoxide dismutase, peroxidase, and catalase were 1.2-1.4-fold higher in both gi mutants compared to the wild type. Finally, the expression levels of antioxidant enzyme genes were 1.5-2-fold higher in the mutants than in the wild type. These results suggest that GI negatively regulates chloroplast biogenesis and resistance to the herbicide butafenacil, providing evidence for a genetic link between GI and chloroplast biogenesis, which could facilitate the development of herbicide-resistant crops.
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Affiliation(s)
- Joon-Yung Cha
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Institute of Agricultural and Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Da-Yeon Lee
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Institute of Agricultural and Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Imdad Ali
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Institute of Agricultural and Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Song Yi Jeong
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Institute of Agricultural and Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Bobae Shin
- Department of Agricultural Chemistry and Food Science and Technology, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Hyunjung Ji
- Department of Agricultural Chemistry and Food Science and Technology, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Jung Sun Kim
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874, Republic of Korea
| | - Min-Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Institute of Agricultural and Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea.
- Department of Agricultural Chemistry and Food Science and Technology, Gyeongsang National University, Jinju, 52828, Republic of Korea.
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Chi YH, Koo SS, Oh HT, Lee ES, Park JH, Phan KAT, Wi SD, Bae SB, Paeng SK, Chae HB, Kang CH, Kim MG, Kim WY, Yun DJ, Lee SY. The Physiological Functions of Universal Stress Proteins and Their Molecular Mechanism to Protect Plants From Environmental Stresses. Front Plant Sci 2019; 10:750. [PMID: 31231414 PMCID: PMC6560075 DOI: 10.3389/fpls.2019.00750] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 05/22/2019] [Indexed: 05/13/2023]
Abstract
Since the original discovery of a Universal Stress Protein (USP) in Escherichia coli, a number of USPs have been identified from diverse sources including archaea, bacteria, plants, and metazoans. As their name implies, these proteins participate in a broad range of cellular responses to biotic and abiotic stresses. Their physiological functions are associated with ion scavenging, hypoxia responses, cellular mobility, and regulation of cell growth and development. Consistent with their roles in resistance to multiple stresses, USPs show a wide range of structural diversity that results from the diverse range of other functional motifs fused with the USP domain. As well as providing structural diversity, these catalytic motifs are responsible for the diverse biochemical properties of USPs and enable them to act in a number of cellular signaling transducers and metabolic regulators. Despite the importance of USP function in many organisms, the molecular mechanisms by which USPs protect cells and provide stress resistance remain largely unknown. This review addresses the diverse roles of USPs in plants and how the proteins enable plants to resist against multiple stresses in ever-changing environment. Bioinformatic tools used for the collection of a set of USPs from various plant species provide more than 2,100 USPs and their functional diversity in plant physiology. Data from previous studies are used to understand how the biochemical activity of plant USPs modulates biotic and abiotic stress signaling. As USPs interact with the redox protein, thioredoxin, in Arabidopsis and reactive oxygen species (ROS) regulates the activity of USPs, the involvement of USPs in redox-mediated defense signaling is also considered. Finally, this review discusses the biotechnological application of USPs in an agricultural context by considering the development of novel stress-resistant crops through manipulating the expression of USP genes.
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Affiliation(s)
- Yong Hun Chi
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Sung Sun Koo
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Hun Taek Oh
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Eun Seon Lee
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Joung Hun Park
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Kieu Anh Thi Phan
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Seong Dong Wi
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Su Bin Bae
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Seol Ki Paeng
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Ho Byoung Chae
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Chang Ho Kang
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju, South Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
- Institute of Agricultural and Life Science (IALS), Gyeongsang National University, Jinju, South Korea
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul, South Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
- *Correspondence: Sang Yeol Lee,
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Park HJ, Baek D, Cha JY, Liao X, Kang SH, McClung CR, Lee SY, Yun DJ, Kim WY. HOS15 Interacts with the Histone Deacetylase HDA9 and the Evening Complex to Epigenetically Regulate the Floral Activator GIGANTEA. Plant Cell 2019; 31:37-51. [PMID: 30606777 PMCID: PMC6391688 DOI: 10.1105/tpc.18.00721] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 11/26/2018] [Accepted: 12/20/2018] [Indexed: 05/18/2023]
Abstract
In plants, seasonal inputs such as photoperiod and temperature modulate the plant's internal genetic program to regulate the timing of the developmental transition from vegetative to reproductive growth. This regulation of the floral transition involves chromatin remodeling, including covalent modification of histones. Here, we report that HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENE 15 (HOS15), a WD40 repeat protein, associates with a histone deacetylase complex to repress transcription of the GIGANTEA (GI)-mediated photoperiodic flowering pathway in Arabidopsis (Arabidopsis thaliana). Loss of function of HOS15 confers early flowering under long-day conditions because elevated GI expression. LUX ARRHYTHMO (LUX), a DNA binding transcription factor and component of the Evening Complex (EC), is important for the binding of HOS15 to the GI promoter. In wild type, HOS15 associates with the EC components LUX, EARLY FLOWERING 3 (ELF3), and ELF4 and the histone deacetylase HDA9 at the GI promoter, resulting in histone deacetylation and reduced GI expression. In the hos15-2 mutant, the levels of histone acetylation are elevated at the GI promoter, resulting in increased GI expression. Our data suggest that the HOS15-EC-HDA9 histone-modifying complex regulates photoperiodic flowering via the transcriptional repression of GI.
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Affiliation(s)
- Hee Jin Park
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029, Republic of Korea
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Dongwon Baek
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Xueji Liao
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Sang-Ho Kang
- International Technology Cooperation Center, Rural Development Administration, Jeonju, 54875, Republic of Korea
| | - C Robertson McClung
- Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
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Lee BD, Cha JY, Kim MR, Shin GI, Paek NC, Kim WY. Light-dependent suppression of COP1 multimeric complex formation is determined by the blue-light receptor FKF1 in Arabidopsis. Biochem Biophys Res Commun 2018; 508:191-197. [PMID: 30471853 DOI: 10.1016/j.bbrc.2018.11.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 11/05/2018] [Indexed: 01/12/2023]
Abstract
CONSTITUTIVELY PHOTOMORPHOGENIC1 (COP1), a multifunctional E3 ligase protein with many target proteins, is involved in diverse developmental processes throughout the plant's lifecycle, including seed germination, the regulation of circadian rhythms, photomorphogenesis, and the control of flowering time. To function, COP1 must form multimeric complexes with SUPPRESSOR OF PHYA1 (SPA1), i.e., [(COP1)2(SPA1)2] tetramers. We recently reported that the blue-light receptor FKF1 (FLAVIN-BINDING, KELCH REPEAT, F-BOX1) represses COP1 activity by inhibiting its homodimerization, but it is not yet clear whether FKF1 affects the formation of COP1-containing multimeric complexes. To explore this issue, we performed size exclusion chromatography (SEC) of Arabidopsis thaliana proteins and found that the levels and composition of COP1-containing multimeric complexes varied throughout a 24-h period. The levels of 440-669 kDa complexes were dramatically reduced in the late afternoon compared to the morning and at night in wild-type plants. During the daytime, the levels of these complexes were reduced in FKF1-overexpressing plants but not in fkf1-t, a loss-of-function mutant of FKF1, suggesting that FKF1 is closely associated with the destabilization of COP1 multimeric protein complexes in a light-dependent manner. We also analyzed the SEC patterns of COP1 multimeric complexes in transgenic plants overexpressing mutant COP1 variants, including COP1L105A (which forms homodimers) and COP1L170A (which cannot form homodimers), and found that COP1 multimeric complexes were scarce in plants overexpressing COP1L170A. These results indicate that COP1 homodimers serve as basic building blocks that assemble into COP1 multimeric complexes with diverse target proteins. We propose that light-activated FKF1 inhibits COP1 homodimerization, mainly by destabilizing 440-669 kDa COP1 complexes, resulting in the repression of CONSTANS-degrading COP1 activity in the late afternoon in long days, but not in short days, thereby regulating photoperiodic flowering in Arabidopsis.
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Affiliation(s)
- Byoung-Doo Lee
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08829, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Mi Ri Kim
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Gyeong-Im Shin
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Nam-Chon Paek
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08829, Republic of Korea.
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea.
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Abstract
CONSTANS (CO) induces the expression of FLOWERING LOCUS T (FT) in the photoperiodic pathway, and thereby regulates the seasonal timing of flowering. CO expression is induced and CO protein is stabilized by FLAVIN-BINDING KELCH REPEAT F-BOX PROTEIN 1 (FKF1) in the late afternoon, while CO is degraded by CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1) during the night. These regulatory cascades were thought to act independently. In our study, we investigated the relationship between FKF1 and COP1 in the regulation of CO stability in response to ambient light conditions. A genetic analysis revealed that FKF1 acts as a direct upstream negative regulator of COP1, in which cop1 mutation is epistatic to fkf1 mutation in the photoperiodic regulation of flowering. COP1 activity requires the formation of a hetero-tetramer with SUPPRESSOR OF PHYA-105 (SPA1), [(COP1)2(SPA1)2]. Light-activated FKF1 has an increased binding capacity for COP1, forming a FKF1-COP1 hetero-dimer, and inhibiting COP1 homo-dimerization at its coiled-coil (CC) domain. Mutations in the CC domain result in poor COP1 dimerization and misregulation of photoperiodic floral induction. We propose that FKF1 represses COP1 activity by inhibiting COP1 dimerization in the late afternoon under long-day conditions, resulting in early flowering.
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Affiliation(s)
- Byoung-Doo Lee
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju 52828, Korea
| | - Mi Ri Kim
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju 52828, Korea
| | - Nam-Chon Paek
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju 52828, Korea
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Jeong HJ, Cha JY, Choi JH, Jang KS, Lim J, Kim WY, Seo DC, Jeon JR. One-Pot Transformation of Technical Lignins into Humic-Like Plant Stimulants through Fenton-Based Advanced Oxidation: Accelerating Natural Fungus-Driven Humification. ACS Omega 2018; 3:7441-7453. [PMID: 30087914 PMCID: PMC6068593 DOI: 10.1021/acsomega.8b00697] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 06/20/2018] [Indexed: 05/05/2023]
Abstract
Commercial humic acids mainly obtained from leonardite are in increasing demand in agronomy, and their market size is growing rapidly because these materials act as soil conditioners and direct stimulators of plant growth and development. In nature, fungus-driven nonspecific oxidations are believed to be a key to catabolizing recalcitrant plant lignins, resulting in lignin humification. Here we demonstrated the effective transformation of technical lignins derived from the Kraft processing of woody biomass into humic-like plant fertilizers through one-pot Fenton oxidations (i.e., artificially accelerated fungus reactions). The lignin variants resulting from the Fenton reaction, and manufactured using a few different ratios of FeSO4 to H2O2, successfully accelerated the germination of Arabidopsis thaliana seeds and increased the tolerance of this plant to NaCl-induced abiotic stress; moreover, the extent of the stimulation of the growth of this plant by these manufactured lignin variants was comparable or superior to that induced by commercial humic acids. The results of high-resolution (15 T) Fourier transform-ion cyclotron resonance mass spectrometry, electrostatic force microscopy, Fourier transform-infrared spectroscopy, and elemental analyses strongly indicated that oxygen-based functional groups were incorporated into the lignins. Moreover, analyses of the total phenolic contents of the lignins and their sedimentation kinetics in water media together with scanning electron microscopy- and Brunauer-Emmett-Teller-based surface characterizations further suggested that polymer fragmentation followed by modification of the phenolic groups on the lignin surfaces was crucial for the humic-like activity of the lignins. A high similarity between the lignin variants and commercial humic acids also resulted from autonomous deposition of iron species into lignin particles during the Fenton oxidation, although their short-term effects of plant stimulations were maintained whether the iron species were present or absent. Finally, we showed that lignins produced from an industrial-scale acid-induced hydrolysis of wood chips were transformed with the similar enhancements of the plant effects, indicating that our fungus-mimicking processes could be a universal way for achieving effective lignin humification.
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Affiliation(s)
- Hae Jin Jeong
- Division
of Applied Life Science (BK21Plus), Department of Agricultural Chemistry
and Food Science & Technology, IALS, RILS, and PMBBRC, Gyeongsang National
University, 501, Jinju-daero, Jinju 52828, Republic of Korea
| | - Joon-Yung Cha
- Division
of Applied Life Science (BK21Plus), Department of Agricultural Chemistry
and Food Science & Technology, IALS, RILS, and PMBBRC, Gyeongsang National
University, 501, Jinju-daero, Jinju 52828, Republic of Korea
| | - Jung Hoon Choi
- Biomedical
Omics Group, Korea Basic Science Institute, 162, Yeongudanji-ro, Cheongju 28119, Republic of Korea
| | - Kyoung-Soon Jang
- Biomedical
Omics Group, Korea Basic Science Institute, 162, Yeongudanji-ro, Cheongju 28119, Republic of Korea
| | - Jongkoo Lim
- R&D Center, GS Caltex Corporation, 359, Expo-ro, Daejeon 34122, Republic
of Korea
| | - Woe-Yeon Kim
- Division
of Applied Life Science (BK21Plus), Department of Agricultural Chemistry
and Food Science & Technology, IALS, RILS, and PMBBRC, Gyeongsang National
University, 501, Jinju-daero, Jinju 52828, Republic of Korea
| | - Dong-Cheol Seo
- Division
of Applied Life Science (BK21Plus), Department of Agricultural Chemistry
and Food Science & Technology, IALS, RILS, and PMBBRC, Gyeongsang National
University, 501, Jinju-daero, Jinju 52828, Republic of Korea
| | - Jong-Rok Jeon
- Division
of Applied Life Science (BK21Plus), Department of Agricultural Chemistry
and Food Science & Technology, IALS, RILS, and PMBBRC, Gyeongsang National
University, 501, Jinju-daero, Jinju 52828, Republic of Korea
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Park J, Lim CJ, Shen M, Park HJ, Cha JY, Iniesto E, Rubio V, Mengiste T, Zhu JK, Bressan RA, Lee SY, Lee BH, Jin JB, Pardo JM, Kim WY, Yun DJ. Epigenetic switch from repressive to permissive chromatin in response to cold stress. Proc Natl Acad Sci U S A 2018; 115:E5400-E5409. [PMID: 29784800 PMCID: PMC6003311 DOI: 10.1073/pnas.1721241115] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Switching from repressed to active status in chromatin regulation is part of the critical responses that plants deploy to survive in an ever-changing environment. We previously reported that HOS15, a WD40-repeat protein, is involved in histone deacetylation and cold tolerance in Arabidopsis However, it remained unknown how HOS15 regulates cold responsive genes to affect cold tolerance. Here, we show that HOS15 interacts with histone deacetylase 2C (HD2C) and both proteins together associate with the promoters of cold-responsive COR genes, COR15A and COR47 Cold induced HD2C degradation is mediated by the CULLIN4 (CUL4)-based E3 ubiquitin ligase complex in which HOS15 acts as a substrate receptor. Interference with the association of HD2C and the COR gene promoters by HOS15 correlates with increased acetylation levels of histone H3. HOS15 also interacts with CBF transcription factors to modulate cold-induced binding to the COR gene promoters. Our results here demonstrate that cold induces HOS15-mediated chromatin modifications by degrading HD2C. This switches the chromatin structure status and facilitates recruitment of CBFs to the COR gene promoters. This is an apparent requirement to acquire cold tolerance.
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Affiliation(s)
- Junghoon Park
- Department of Biomedical Science and Engineering, Konkuk University, 05029 Seoul, South Korea
- Division of Applied Life Science (BK21 plus Program), Plant Molecular Biology and Biotechnology Research Center, Institute of Agriculture and Life Science, Gyeongsang National University, 52828 Jinju, Republic of Korea
| | - Chae Jin Lim
- Department of Biomedical Science and Engineering, Konkuk University, 05029 Seoul, South Korea
- Division of Applied Life Science (BK21 plus Program), Plant Molecular Biology and Biotechnology Research Center, Institute of Agriculture and Life Science, Gyeongsang National University, 52828 Jinju, Republic of Korea
| | - Mingzhe Shen
- Division of Applied Life Science (BK21 plus Program), Plant Molecular Biology and Biotechnology Research Center, Institute of Agriculture and Life Science, Gyeongsang National University, 52828 Jinju, Republic of Korea
| | - Hee Jin Park
- Department of Biomedical Science and Engineering, Konkuk University, 05029 Seoul, South Korea
- Institute of Glocal Disease Control, Konkuk University, 05029 Seoul, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21 plus Program), Plant Molecular Biology and Biotechnology Research Center, Institute of Agriculture and Life Science, Gyeongsang National University, 52828 Jinju, Republic of Korea
| | - Elisa Iniesto
- Plant Molecular Genetics Department, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Cientificas, Campus de la Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Vicente Rubio
- Plant Molecular Genetics Department, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Cientificas, Campus de la Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Tesfaye Mengiste
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907
| | - Jian-Kang Zhu
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN 47907
| | - Ray A Bressan
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN 47907
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21 plus Program), Plant Molecular Biology and Biotechnology Research Center, Institute of Agriculture and Life Science, Gyeongsang National University, 52828 Jinju, Republic of Korea
| | - Byeong-Ha Lee
- Department of Life Science, Sogang University, 04107 Seoul, South Korea
| | - Jing Bo Jin
- Institute of Botany, Chinese Academy of Sciences, 100093 Beijing, China
| | - Jose M Pardo
- Institute of Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Cientificas, 41092 Seville, Spain
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 plus Program), Plant Molecular Biology and Biotechnology Research Center, Institute of Agriculture and Life Science, Gyeongsang National University, 52828 Jinju, Republic of Korea
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, 05029 Seoul, South Korea;
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Lee BD, Kim MR, Kang MY, Cha JY, Han SH, Nawkar GM, Sakuraba Y, Lee SY, Imaizumi T, McClung CR, Kim WY, Paek NC. Author Correction: The F-box protein FKF1 inhibits dimerization of COP1 in the control of photoperiodic flowering. Nat Commun 2018; 9:553. [PMID: 29396394 PMCID: PMC5797074 DOI: 10.1038/s41467-018-02966-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The previously published version of this Article contained errors in Figure 5. In panel c, the second and fourth blot images were incorrectly labeled 'α-Myc' and should have been labelled 'α-HA'. These errors have been corrected in both the PDF and HTML versions of the Article.
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Affiliation(s)
- Byoung-Doo Lee
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, 08826, Seoul, Republic of Korea
| | - Mi Ri Kim
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, 52828, Jinju, Republic of Korea
| | - Min-Young Kang
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, 08826, Seoul, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, 52828, Jinju, Republic of Korea
| | - Su-Hyun Han
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, 08826, Seoul, Republic of Korea
| | - Ganesh M Nawkar
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, 52828, Jinju, Republic of Korea
| | - Yasuhito Sakuraba
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, 08826, Seoul, Republic of Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, 52828, Jinju, Republic of Korea
| | - Takato Imaizumi
- Department of Biology, University of Washington, Seattle, WA 98195-1800, USA
| | - C Robertson McClung
- Department of Biological Sciences, Dartmouth College, Hanover, NH 03755-3563, USA
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, 52828, Jinju, Republic of Korea.
| | - Nam-Chon Paek
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, 08826, Seoul, Republic of Korea.
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Khaleda L, Park HJ, Yun DJ, Jeon JR, Kim MG, Cha JY, Kim WY. Humic Acid Confers HIGH-AFFINITY K+ TRANSPORTER 1-Mediated Salinity Stress Tolerance in Arabidopsis. Mol Cells 2017; 40:966-975. [PMID: 29276942 PMCID: PMC5750715 DOI: 10.14348/molcells.2017.0229] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 11/05/2017] [Accepted: 11/05/2017] [Indexed: 11/27/2022] Open
Abstract
Excessive salt disrupts intracellular ion homeostasis and inhibits plant growth, which poses a serious threat to global food security. Plants have adapted various strategies to survive in unfavorable saline soil conditions. Here, we show that humic acid (HA) is a good soil amendment that can be used to help overcome salinity stress because it markedly reduces the adverse effects of salinity on Arabidopsis thaliana seedlings. To identify the molecular mechanisms of HA-induced salt stress tolerance in Arabidopsis, we examined possible roles of a sodium influx transporter HIGH-AFFINITY K+ TRANSPORTER 1 (HKT1). Salt-induced root growth inhibition in HKT1 overexpressor transgenic plants (HKT1-OX) was rescued by application of HA, but not in wild-type and other plants. Moreover, salt-induced degradation of HKT1 protein was blocked by HA treatment. In addition, the application of HA to HKT1-OX seedlings led to increased distribution of Na+ in roots up to the elongation zone and caused the reabsorption of Na+ by xylem and parenchyma cells. Both the influx of the secondary messenger calcium and its cytosolic release appear to function in the destabilization of HKT1 protein under salt stress. Taken together, these results suggest that HA could be applied to the field to enhance plant growth and salt stress tolerance via post-transcriptional control of the HKT1 transporter gene under saline conditions.
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Affiliation(s)
- Laila Khaleda
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Life Sciences (RILS), Gyeongsang National University, Jinju 52828,
Korea
| | - Hee Jin Park
- Institute of Glocal Disease Control, Konkuk University, Seoul 05029,
Korea
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029,
Korea
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029,
Korea
| | - Jong-Rok Jeon
- Department of Agriculture Chemistry and Food Science & Technology, Institute of Agriculture and Life Science (IALS), Gyeongsang National University, Jinju 52828,
Korea
| | - Min Gab Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, PMBBRC, Gyeongsang National University, Jinju 52828,
Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Life Sciences (RILS), Gyeongsang National University, Jinju 52828,
Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Life Sciences (RILS), Gyeongsang National University, Jinju 52828,
Korea
- Department of Agriculture Chemistry and Food Science & Technology, Institute of Agriculture and Life Science (IALS), Gyeongsang National University, Jinju 52828,
Korea
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49
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Lee BD, Kim MR, Kang MY, Cha JY, Han SH, Nawkar GM, Sakuraba Y, Lee SY, Imaizumi T, McClung CR, Kim WY, Paek NC. The F-box protein FKF1 inhibits dimerization of COP1 in the control of photoperiodic flowering. Nat Commun 2017; 8:2259. [PMID: 29273730 PMCID: PMC5741637 DOI: 10.1038/s41467-017-02476-2] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 12/04/2017] [Indexed: 01/12/2023] Open
Abstract
In Arabidopsis thaliana, CONSTANS (CO) plays an essential role in the regulation of photoperiodic flowering under long-day conditions. CO protein is stable only in the afternoon of long days, when it induces the expression of FLOWERING LOCUS T (FT), which promotes flowering. The blue-light photoreceptor FLAVIN-BINDING, KELCH REPEAT, F-BOX1 (FKF1) interacts with CO and stabilizes it by an unknown mechanism. Here, we provide genetic and biochemical evidence that FKF1 inhibits CONSTITUTIVE PHOTOMORPHOGENIC1 (COP1)-dependent CO degradation. Light-activated FKF1 has no apparent effect on COP1 stability but can interact with and negatively regulate COP1. We show that FKF1 can inhibit COP1 homo-dimerization. Mutation of the coiled-coil domain in COP1, which prevents dimer formation, impairs COP1 function in coordinating flowering time. Based on these results, we propose a model whereby the light- and day length-dependent interaction between FKF1 and COP1 controls CO stability to regulate flowering time. CONSTANS promotes flowering under long-day conditions in Arabidopsis but is rapidly degraded in short-day conditions. Here the authors show that the blue-light photoreceptor FKF1 can interact with the E3 ligase COP1 in a light-dependent manner and prevent degradation of CO in long-day conditions.
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Affiliation(s)
- Byoung-Doo Lee
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Mi Ri Kim
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Min-Young Kang
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Su-Hyun Han
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ganesh M Nawkar
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Yasuhito Sakuraba
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sang Yeol Lee
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Takato Imaizumi
- Department of Biology, University of Washington, Seattle, WA, 98195-1800, USA
| | - C Robertson McClung
- Department of Biological Sciences, Dartmouth College, Hanover, NH, 03755-3563, USA
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21Plus), PMBBRC & IALS, Gyeongsang National University, Jinju, 52828, Republic of Korea.
| | - Nam-Chon Paek
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea.
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50
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Gil KE, Kim WY, Lee HJ, Faisal M, Saquib Q, Alatar AA, Park CM. ZEITLUPE Contributes to a Thermoresponsive Protein Quality Control System in Arabidopsis. Plant Cell 2017; 29:2882-2894. [PMID: 29061867 PMCID: PMC5728135 DOI: 10.1105/tpc.17.00612] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 10/06/2017] [Accepted: 10/20/2017] [Indexed: 05/19/2023]
Abstract
Cellular proteins undergo denaturation and oxidative damage under heat stress, forming insoluble aggregates that are toxic to cells. Plants possess versatile mechanisms to deal with insoluble protein aggregates. Denatured proteins are either renatured to their native conformations or removed from cellular compartments; these processes are often referred to as protein quality control. Heat shock proteins (HSPs) act as molecular chaperones that assist in the renaturation-degradation process. However, how protein aggregates are cleared from cells in plants is largely unknown. Here, we demonstrate that heat-induced protein aggregates are removed by a protein quality control system that includes the ZEITLUPE (ZTL) E3 ubiquitin ligase, a central circadian clock component in Arabidopsis thaliana ZTL mediates the polyubiquitination of aggregated proteins, which leads to proteasomal degradation and enhances the thermotolerance of plants growing at high temperatures. The ZTL-defective ztl-105 mutant exhibited reduced thermotolerance, which was accompanied by a decline in polyubiquitination but an increase in protein aggregate formation. ZTL and its interacting partner HSP90 were cofractionated with insoluble aggregates under heat stress, indicating that ZTL contributes to the thermoresponsive protein quality control machinery. Notably, the circadian clock was hypersensitive to heat in ztl-105 We propose that ZTL-mediated protein quality control contributes to the thermal stability of the circadian clock.
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Affiliation(s)
- Kyung-Eun Gil
- Department of Chemistry, Seoul National University, Seoul 08825, Korea
| | - Woe-Yeon Kim
- Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju 52828, Korea
| | - Hyo-Jun Lee
- Department of Chemistry, Seoul National University, Seoul 08825, Korea
| | - Mohammad Faisal
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Quaiser Saquib
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdulrahman A Alatar
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Chung-Mo Park
- Department of Chemistry, Seoul National University, Seoul 08825, Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul 08826, Korea
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