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Kim MJ, Song YR, Kim YE, Bae SJ, Lee WY, Bak SB, Kim YW. Kaempferol stimulation of autophagy regulates the ferroptosis under the oxidative stress as mediated with AMP-activated protein kinase. Free Radic Biol Med 2023; 208:630-642. [PMID: 37703935 DOI: 10.1016/j.freeradbiomed.2023.09.008] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/06/2023] [Accepted: 09/10/2023] [Indexed: 09/15/2023]
Abstract
Recent studies have highlighted the positive effects of Kaempferol (KP), including its anti-inflammatory and antioxidant properties. However, its impact on oxidative damage induced by heavy metals and pro-inflammatory mediators, such as arachidonic acid (AA), has not yet been identified. Our objective was to specifically evaluate liver damage due to AA + iron-induced oxidative stress, both in vitro and in vivo. In HepG2 cells, KP activated the AMP-activated protein kinase (AMPK), suggesting a hepatoprotective effect through AMPK inhibition, as assessed by immunoblot and FACS analysis (EC50 = 10 μM). KP also stimulated autophagy, a degradation process that eliminates aged, damaged, and unnecessary components, via mTOR inhibition and ULK1 phosphorylation. This activation was further validated by the upregulation of autophagy-related genes (ATG5) and Beclin-1, along with the conversion of LC3BI to LC3BII. Ferroptosis, a non-apoptotic type of cell death characterized by oxidative stress from the production of reactive oxygen species (ROS) and excessive iron accumulation, was linked to the activation of autophagy, as confirmed through the protein expression of deferoxamine (DFO) and ferrostatin-1 (Fer-1), the representative ferroptosis inhibitors (positive controls). In mice, oral administration of KP demonstrated protective effects against CCl4-induced hepatotoxicity. In conclusion, KP provides hepatoprotective effects against oxidative stress induced by AA + iron treatment in vitro and CCl4 treatment in vivo.
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Affiliation(s)
- Min-Jin Kim
- AI-Bio Convergence DDI Basic Research Lab., School of Korean Medicine, Dongguk University, Goyang-si, Gyeonggi-do, South Korea
| | - Yu-Rim Song
- AI-Bio Convergence DDI Basic Research Lab., School of Korean Medicine, Dongguk University, Goyang-si, Gyeonggi-do, South Korea
| | - Young Eun Kim
- AI-Bio Convergence DDI Basic Research Lab., School of Korean Medicine, Dongguk University, Goyang-si, Gyeonggi-do, South Korea
| | - Su-Jin Bae
- AI-Bio Convergence DDI Basic Research Lab., School of Korean Medicine, Dongguk University, Goyang-si, Gyeonggi-do, South Korea
| | - Won-Yung Lee
- AI-Bio Convergence DDI Basic Research Lab., School of Korean Medicine, Dongguk University, Goyang-si, Gyeonggi-do, South Korea; College of Korean Medicine, Wonkwang University, Iksan-si, South Korea
| | - Seon-Been Bak
- AI-Bio Convergence DDI Basic Research Lab., School of Korean Medicine, Dongguk University, Goyang-si, Gyeonggi-do, South Korea
| | - Young Woo Kim
- AI-Bio Convergence DDI Basic Research Lab., School of Korean Medicine, Dongguk University, Goyang-si, Gyeonggi-do, South Korea.
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Chen R, Hu HJ, Qu Z, Song YR, Lei QK, Liu CB, Tang YS, Wang CL, He ZZ, Ouyang ZW, Zhang K, Qiu Y, Dong C, Wang JF. High-field magnetization and electronic spin resonance study in the twisted honeycomb lattice α-Mn 2V 2O 7. J Phys Condens Matter 2023; 35:205801. [PMID: 36881910 DOI: 10.1088/1361-648x/acc225] [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] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
We report the single-crystal growth of Mn2V2O7and the results of magnetic susceptibility, high-field magnetization up to 55 T and high-frequency electric spin resonance (ESR) measurements for its low-temperatureαphase. Two antiferromagnetic (AFM) ordering at 17.5 K and 3 K and obvious magnetic anisotropy are observed inα-Mn2V2O7upon cooling. In pulsed high magnetic fields, the compound reaches the saturation magnetic moment of ∼10.5μBfor each molecular formula at around 45 T after two undergoing AFM phase transitions atHc1≈ 16 T,Hc2≈ 34.5 T forH//[11-0] andHsf1= 2.5 T,Hsf2= 7 T forH//[001]. In these two directions, two and seven resonance modes are detected by ESR spectroscopy, respectively. Theω1andω2modes ofH//[11-0] can be well described by two-sublattice AFM resonance mode with two zero-field gaps at 94.51 GHz and 169.28 GHz, indicating a hard-axis feature. The seven modes forH//[001] are partially separated by the critical fields ofHsf1andHsf2, displaying the two signs of spin-flop transition. The fittings ofωc1andωc2modes yield zero-field gaps at 69.50 GHz and 84.73 GHz forH//[001], confirming the axis-type anisotropy. The saturated moment and gyromagnetic ratio indicate the Mn2+ion inα-Mn2V2O7is in a high spin state with orbital moment completely quenched. A quasi-one-dimensional magnetism with a zig-zag-chain spin configuration is suggested inα-Mn2V2O7, due to the special neighbor interactions caused by a distorted network structure with honeycomb layer.
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Affiliation(s)
- R Chen
- Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - H J Hu
- Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Z Qu
- Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Y R Song
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Q K Lei
- Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - C B Liu
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Y S Tang
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures. Nanjing University, Nanjing 210093, People's Republic of China
| | - C L Wang
- Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Z Z He
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Z W Ouyang
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - K Zhang
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Y Qiu
- Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - C Dong
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - J F Wang
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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Song YR, Jang B, Lee SM, Bae SJ, Bak SB, Kim YW. Angelica gigas NAKAI and Its Active Compound, Decursin, Inhibit Cellular Injury as an Antioxidant by the Regulation of AMP-Activated Protein Kinase and YAP Signaling. Molecules 2022; 27:molecules27061858. [PMID: 35335221 PMCID: PMC8954541 DOI: 10.3390/molecules27061858] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/05/2022] [Accepted: 03/08/2022] [Indexed: 11/16/2022] Open
Abstract
Natural products and medicinal herbs have been used to treat various human diseases by regulating cellular functions and metabolic pathways. Angelica gigas NAKAI (AG) helps regulate pathological processes in some medical fields, including gastroenterology, gynecology, and neuropsychiatry. Although some papers have reported its diverse indications, the effects of AG against arachidonic acid (AA)+ iron and carbon tetrachloride (CCl4) have not been reported. In HepG2 cells, AA+ iron induced cellular apoptosis and mitochondrial damage, as assessed by mitochondrial membrane permeability (MMP) and the expression of apoptosis-related proteins. On the other hand, AG markedly inhibited these detrimental phenomena and reactive oxygen species (ROS) production induced by AA+ iron. AG activated the liver kinase B1 (LKB1)-dependent AMP-activated protein kinase (AMPK), which affected oxidative stress in the cells. Moreover, AG also regulated the expression of yes-associated protein (YAP) signaling as mediated by the AMPK pathways. In mice, an oral treatment of AG protected against liver toxicity induced by CCl4, as indicated by the plasma and histochemical parameters. Among the compounds in AG, decursin had antioxidant activity and affected the AMPK pathway. In conclusion, AG has antioxidant effects in vivo and in vitro, indicating that natural products such as AG could be potential candidate for the nutraceuticals to treat various disorders by regulating mitochondrial dysfunction and cellular metabolic pathways.
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Song YR, Vu NT, Park J, Hwang IS, Jeong HJ, Cho YS, Oh CS. Phage PPPL-1, A New Biological Agent to Control Bacterial Canker Caused by Pseudomonas syringae pv. actinidiae in Kiwifruit. Antibiotics (Basel) 2021; 10:antibiotics10050554. [PMID: 34068711 PMCID: PMC8150970 DOI: 10.3390/antibiotics10050554] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 04/13/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 11/16/2022] Open
Abstract
Pseudomonas syringae pv. actinidiae (Psa) is a Gram-negative bacterium that causes bacterial canker disease in kiwifruit. Copper or antibiotics have been used in orchards to control this disease, but the recent emergence of antibiotic-resistant Psa has called for the development of a new control agent. We previously reported that the bacteriophage (or phage) PPPL-1 showed antibacterial activity for both biovar 2 and 3 of Psa. To investigate the possibility of PPPL-1 to control bacterial canker in kiwifruit, we further tested the efficacy of PPPL-1 and its phage cocktail with two other phages on suppressing disease development under greenhouse conditions using 6 weeks old kiwifruit plants. Our results showed that the disease control efficacy of PPPL-1 treatment was statistically similar to those of phage cocktail treatment or AgrimycinTM, which contains streptomycin and oxytetracycline antibiotics as active ingredients. Moreover, PPPL-1 could successfully kill streptomycin-resistant Psa isolates, of which the treatment of BuramycinTM carrying only streptomycin as an active ingredient had no effect in vitro. The phage PPPL-1 was further characterized, and stability assays showed that the phage was stable in the field soil and at low temperature of 0 ± 2 °C. In addition, the phage could be scaled up quickly up to 1010 pfu/mL at 12 h later from initial multiplicity of infection of 0.000005. Our results indicate that PPPL-1 phage is a useful candidate as a biocontrol agent and could be a tool to control the bacterial canker in kiwifruit by Psa infection in the field conditions.
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Affiliation(s)
- Yu-Rim Song
- Department of Horticultural Biotechnology, College of Life Science, Kyung Hee University, Yongin 17104, Korea; (Y.-R.S.); (N.T.V.); (J.P.); (I.S.H.)
| | - Nguyen Trung Vu
- Department of Horticultural Biotechnology, College of Life Science, Kyung Hee University, Yongin 17104, Korea; (Y.-R.S.); (N.T.V.); (J.P.); (I.S.H.)
| | - Jungkum Park
- Department of Horticultural Biotechnology, College of Life Science, Kyung Hee University, Yongin 17104, Korea; (Y.-R.S.); (N.T.V.); (J.P.); (I.S.H.)
| | - In Sun Hwang
- Department of Horticultural Biotechnology, College of Life Science, Kyung Hee University, Yongin 17104, Korea; (Y.-R.S.); (N.T.V.); (J.P.); (I.S.H.)
| | - Hyeon-Ju Jeong
- Fruit Research Institute, Jeollanamdo Agricultural Research and Extension Services, Haenam-gun 59021, Korea; (H.-J.J.); (Y.-S.C.)
| | - Youn-Sup Cho
- Fruit Research Institute, Jeollanamdo Agricultural Research and Extension Services, Haenam-gun 59021, Korea; (H.-J.J.); (Y.-S.C.)
| | - Chang-Sik Oh
- Department of Horticultural Biotechnology, College of Life Science, Kyung Hee University, Yongin 17104, Korea; (Y.-R.S.); (N.T.V.); (J.P.); (I.S.H.)
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Korea
- Correspondence: ; Tel.: +82-31-201-2678
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Lee GM, Ko S, Oh EJ, Song YR, Kim D, Oh CS. Comparative Genome Analysis Reveals Natural Variations in the Genomes of Erwinia pyrifoliae, a Black Shoot Blight Pathogen in Apple and Pear. Plant Pathol J 2020; 36:428-439. [PMID: 33082727 PMCID: PMC7542023 DOI: 10.5423/ppj.oa.06.2020.0097] [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] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 08/24/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
Erwinia pyrifoliae is a Gram-negative bacterial plant pathogen that causes black shoot blight in apple and pear. Although earlier studies reported the genome comparison of Erwinia species, E. pyrifoliae strains for such analysis were isolated in 1996. In 2014, the strain E. pyrifoliae EpK1/15 was newly isolated in the apple tree showing black shoot blight in South Korea. This study aimed to better understand the similarities and differences caused by natural variations at the genomic level between newly isolated E. pyrifoliae EpK1/15 and the strain Ep1/96, which were isolated almost 20 years apart. Several comparative genomic analyses were conducted, and Clusters of Orthologous Groups of proteins (COG) database was used to classify functional annotation for each strain. E. pyrifoliae EpK1/15 had similarities with the Ep1/96 strain in stress-related genes, Tn3 transposase of insertion sequences, type III secretion systems, and small RNAs. The most remarkable difference to emerge from this comparison was that although the draft genome of E. pyrifoliae EpK1/15 was almost conserved, Epk1/15 strain had at least three sorts of structural variations in functional annotation according to COG database; chromosome inversion, translocation, and duplication. These results indicate that E. pyrifoliae species has gone natural variations within almost 20 years at the genomic level, and we can trace their similarities and differences with comparative genomic analysis.
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Affiliation(s)
- Gyu Min Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 4499, Korea
| | - Seyoung Ko
- School of Life Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Eom-Ji Oh
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Korea
| | - Yu-Rim Song
- Department of Horticultural Biotechnology, Kyung Hee University, Yongin 1710, Korea
| | - Donghyuk Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 4499, Korea
- School of Life Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Chang-Sik Oh
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Korea
- Department of Horticultural Biotechnology, Kyung Hee University, Yongin 1710, Korea
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Song YR, Hwang IS, Oh CS. Natural Variation in Virulence of Acidovorax citrulli Isolates That Cause Bacterial Fruit Blotch in Watermelon, Depending on Infection Routes. Plant Pathol J 2020; 36:29-42. [PMID: 32089659 PMCID: PMC7012574 DOI: 10.5423/ppj.oa.10.2019.0254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 11/13/2019] [Accepted: 12/02/2019] [Indexed: 05/21/2023]
Abstract
Acidovorax citrulli causes bacterial fruit blotch in Cucurbitaceae, including watermelon. Although A. citrulli is a seed-borne pathogen, it can cause diverse symptoms in other plant organs like leaves, stems and fruits. To determine the infection routes of A. citrulli, we examined the virulence of six isolates (Ac0, Ac1, Ac2, Ac4, Ac8, and Ac11) on watermelon using several inoculation methods. Among six isolates, DNA polymorphism reveals that three isolates Ac0, Ac1, and Ac4 belong to Clonal Complex (CC) group II and the others do CC group I. Ac0, Ac4, and Ac8 isolates efficiently infected seeds during germination in soil, and Ac0 and Ac4 also infected the roots of watermelon seedlings wounded prior to inoculation. Infection through leaves was successful only by three isolates belonging to CC group II, and two of these also infected the mature watermelon fruits. Ac2 did not cause the disease in all assays. Interestingly, three putative type III effectors (Aave_2166, Aave_2708, and Aave_3062) with intact forms were only found in CC group II. Overall, our results indicate that A. citrulli can infect watermelons through diverse routes, and the CC grouping of A. citrulli was only correlated with virulence in leaf infection assays.
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Affiliation(s)
| | | | - Chang-Sik Oh
- Corresponding author: Phone) +82-31-201-2678, FAX) +82-31-204-8116, E-mail)
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Lee H, Kim MS, Song YR, Oh CS, Lim HS, Lee WH, Kang JS, Cho BK. Non-destructive evaluation of bacteria-infected watermelon seeds using visible/near-infrared hyperspectral imaging. J Sci Food Agric 2017; 97:1084-1092. [PMID: 27264863 DOI: 10.1002/jsfa.7832] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 02/18/2016] [Revised: 05/14/2016] [Accepted: 05/28/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND There is a need to minimize economic damage by sorting infected seeds from healthy seeds before seeding. However, current methods of detecting infected seeds, such as seedling grow-out, enzyme-linked immunosorbent assays, the polymerase chain reaction (PCR) and the real-time PCR have a critical drawbacks in that they are time-consuming, labor-intensive and destructive procedures. The present study aimed to evaluate the potential of visible/near-infrared (Vis/NIR) hyperspectral imaging system for detecting bacteria-infected watermelon seeds. RESULTS A hyperspectral Vis/NIR reflectance imaging system (spectral region of 400-1000 nm) was constructed to obtain hyperspectral reflectance images for 336 bacteria-infected watermelon seeds, which were then subjected to partial least square discriminant analysis (PLS-DA) and a least-squares support vector machine (LS-SVM) to classify bacteria-infected watermelon seeds from healthy watermelon seeds. The developed system detected bacteria-infected watermelon seeds with an accuracy > 90% (PLS-DA: 91.7%, LS-SVM: 90.5%), suggesting that the Vis/NIR hyperspectral imaging system is effective for quarantining bacteria-infected watermelon seeds. CONCLUSION The results of the present study show that it is possible to use the Vis/NIR hyperspectral imaging system for detecting bacteria-infected watermelon seeds. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Hoonsoo Lee
- Department of Biosystems Machinery Engineering, College of Agricultural and Life Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, South Korea
| | - Moon S Kim
- Environmental Microbiology and Food Safety Laboratory, Agricultural Research Service, US Department of Agriculture, Powder Mill Rd, Bldg 303, BARC-East, Beltsville, MD 20705, USA
| | - Yu-Rim Song
- Department of Horticultural Biotechnology and Institute of Life Science and Resources, Kyung Hee University, Yongin 441-701, South Korea
| | - Chang-Sik Oh
- Department of Horticultural Biotechnology and Institute of Life Science and Resources, Kyung Hee University, Yongin 441-701, South Korea
| | - Hyoun-Sub Lim
- Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, South Korea
| | - Wang-Hee Lee
- Department of Biosystems Machinery Engineering, College of Agricultural and Life Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, South Korea
| | - Jum-Soon Kang
- Department of Horticultural Bioscience, Pusan National University, Miryang 627-706, South Korea
| | - Byoung-Kwan Cho
- Department of Biosystems Machinery Engineering, College of Agricultural and Life Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, South Korea
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Yu JG, Lim JA, Song YR, Heu S, Kim GH, Koh YJ, Oh CS. Isolation and Characterization of Bacteriophages Against Pseudomonas syringae pv. actinidiae Causing Bacterial Canker Disease in Kiwifruit. J Microbiol Biotechnol 2016; 26:385-93. [PMID: 26628254 DOI: 10.4014/jmb.1509.09012] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Pseudomonas syringae pv. actinidiae causes bacterial canker disease in kiwifruit. Owing to the prohibition of agricultural antibiotic use in major kiwifruit-cultivating countries, alternative methods need to be developed to manage this disease. Bacteriophages are viruses that specifically infect target bacteria and have recently been reconsidered as potential biological control agents for bacterial pathogens owing to their specificity in terms of host range. In this study, we isolated bacteriophages against P. syringae pv. actinidiae from soils collected from kiwifruit orchards in Korea and selected seven bacteriophages for further characterization based on restriction enzyme digestion patterns of genomic DNA. Among the studied bacteriophages, two belong to the Myoviridae family and three belong to the Podoviridae family, based on morphology observed by transmission electron microscopy. The host range of the selected bacteriophages was confirmed using 18 strains of P. syringae pv. actinidiae, including the Psa2 and Psa3 groups, and some were also effective against other P. syringae pathovars. Lytic activity of the selected bacteriophages was sustained in vitro until 80 h, and their activity remained stable up to 50°C, at pH 11, and under UV-B light. These results indicate that the isolated bacteriophages are specific to P. syringae species and are resistant to various environmental factors, implying their potential use in control of bacterial canker disease in kiwifruits.
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Affiliation(s)
- Ji-Gang Yu
- Department of Horticultural Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Jeong-A Lim
- Division of Microbial Safety, National Academy of Agricultural Science, Rural Development Administration, Jeonju 55365, Republic of Korea
| | - Yu-Rim Song
- Department of Horticultural Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Sunggi Heu
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16429, Republic of Korea
| | - Gyoung Hee Kim
- Department of Plant Medicine, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Young Jin Koh
- Department of Plant Medicine, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Chang-Sik Oh
- Department of Horticultural Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea
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Song YR, Choi MS, Choi GW, Park IK, Oh CS. Antibacterial Activity of Cinnamaldehyde and Estragole Extracted from Plant Essential Oils against Pseudomonas syringae pv. actinidiae Causing Bacterial Canker Disease in Kiwifruit. Plant Pathol J 2016; 32:363-70. [PMID: 27493612 PMCID: PMC4968647 DOI: 10.5423/ppj.nt.01.2016.0006] [Citation(s) in RCA: 16] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 02/24/2016] [Accepted: 03/02/2016] [Indexed: 06/06/2023]
Abstract
Pseudomonas syringae pv. actinidiae (Psa) causes bacterial canker disease in kiwifruit. Antibacterial activity of plant essential oils (PEOs) originating from 49 plant species were tested against Psa by a vapor diffusion and a liquid culture assays. The five PEOs from Pimenta racemosa, P. dioica, Melaleuca linariifolia, M. cajuputii, and Cinnamomum cassia efficiently inhibited Psa growth by either assays. Among their major components, estragole, eugenol, and methyl eugenol showed significant antibacterial activity by only the liquid culture assay, while cinnamaldehyde exhibited antibacterial activity by both assays. The minimum inhibitory concentrations (MICs) of estragole and cinnamaldehyde by the liquid culture assay were 1,250 and 2,500 ppm, respectively. The MIC of cinnamaldehyde by the vapor diffusion assay was 5,000 ppm. Based on the formation of clear zones or the decrease of optical density caused by these compounds, they might kill the bacterial cells and this feature might be useful for managing the bacterial canker disease in kiwifruit.
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Affiliation(s)
- Yu-Rim Song
- Department of Horticultural Biotechnology and Institute of Life Sciences & Resources, Kyung Hee University, Yongin 17104,
Korea
| | - Min-Seon Choi
- Department of Horticultural Biotechnology and Institute of Life Sciences & Resources, Kyung Hee University, Yongin 17104,
Korea
| | - Geun-Won Choi
- Department of Horticultural Biotechnology and Institute of Life Sciences & Resources, Kyung Hee University, Yongin 17104,
Korea
| | - Il-Kwon Park
- Department of Forest Sciences, Seoul National University, Seoul 08826,
Korea
| | - Chang-Sik Oh
- Department of Horticultural Biotechnology and Institute of Life Sciences & Resources, Kyung Hee University, Yongin 17104,
Korea
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Song YR, Wu B, Yang YT, Chen J, Zhang LJ, Zhang ZW, Shi HY, Huang CL, Pan JX, Xie P. Specific alterations in plasma proteins during depressed, manic, and euthymic states of bipolar disorder. ACTA ACUST UNITED AC 2015; 48:973-82. [PMID: 26375446 PMCID: PMC4671523 DOI: 10.1590/1414-431x20154550] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [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: 12/03/2014] [Accepted: 04/14/2015] [Indexed: 12/22/2022]
Abstract
Bipolar disorder (BD) is a common psychiatric mood disorder affecting more than 1-2%
of the general population of different European countries. Unfortunately, there is no
objective laboratory-based test to aid BD diagnosis or monitor its progression, and
little is known about the molecular basis of BD. Here, we performed a comparative
proteomic study to identify differentially expressed plasma proteins in various BD
mood states (depressed BD, manic BD, and euthymic BD) relative to healthy controls. A
total of 10 euthymic BD, 20 depressed BD, 15 manic BD, and 20 demographically matched
healthy control subjects were recruited. Seven high-abundance proteins were
immunodepleted in plasma samples from the 4 experimental groups, which were then
subjected to proteome-wide expression profiling by two-dimensional electrophoresis
and matrix-assisted laser desorption/ionization-time-of-flight/time-of-flight tandem
mass spectrometry. Proteomic results were validated by immunoblotting and
bioinformatically analyzed using MetaCore. From a total of 32 proteins identified
with 1.5-fold changes in expression compared with healthy controls, 16 proteins were
perturbed in BD independent of mood state, while 16 proteins were specifically
associated with particular BD mood states. Two mood-independent differential
proteins, apolipoprotein (Apo) A1 and Apo L1, suggest that BD pathophysiology may be
associated with early perturbations in lipid metabolism. Moreover, down-regulation of
one mood-dependent protein, carbonic anhydrase 1 (CA-1), suggests it may be involved
in the pathophysiology of depressive episodes in BD. Thus, BD pathophysiology may be
associated with early perturbations in lipid metabolism that are independent of mood
state, while CA-1 may be involved in the pathophysiology of depressive episodes.
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Affiliation(s)
- Y R Song
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - B Wu
- Chongqing Key Laboratory of Neurobiology, Chongqing, China
| | - Y T Yang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - J Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - L J Zhang
- Chongqing Key Laboratory of Neurobiology, Chongqing, China
| | - Z W Zhang
- Chongqing Key Laboratory of Neurobiology, Chongqing, China
| | - H Y Shi
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - C L Huang
- Chongqing Key Laboratory of Neurobiology, Chongqing, China
| | - J X Pan
- Chongqing Key Laboratory of Neurobiology, Chongqing, China
| | - P Xie
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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11
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Bae C, Han SW, Song YR, Kim BY, Lee HJ, Lee JM, Yeam I, Heu S, Oh CS. Infection processes of xylem-colonizing pathogenic bacteria: possible explanations for the scarcity of qualitative disease resistance genes against them in crops. Theor Appl Genet 2015; 128:1219-29. [PMID: 25917599 DOI: 10.1007/s00122-015-2521-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 04/17/2015] [Indexed: 05/22/2023]
Abstract
Disease resistance against xylem-colonizing pathogenic bacteria in crops. Plant pathogenic bacteria cause destructive diseases in many commercially important crops. Among these bacteria, eight pathogens, Ralstonia solanacearum, Xanthomonas oryzae pv. oryzae, X. campestris pv. campestris, Erwinia amylovora, Pantoea stewartii subsp. stewartii, Clavibacter michiganensis subsp. michiganensis, Pseudomonas syringae pv. actinidiae, and Xylella fastidiosa, infect their host plants through different infection sites and paths and eventually colonize the xylem tissues of their host plants, resulting in wilting symptoms by blocking water flow or necrosis of xylem tissues. Noticeably, only a relatively small number of resistant cultivars in major crops against these vascular bacterial pathogens except X. oryzae pv. oryzae have been found or generated so far, although these pathogens threaten productivity of major crops. In this review, we summarize the lifestyles of major xylem-colonizing bacterial pathogens and then discuss the progress of current research on disease resistance controlled by qualitative disease resistance genes or quantitative trait loci against them. Finally, we propose infection processes of xylem-colonizing bacterial pathogens as one of possible reasons for why so few qualitative disease resistance genes against these pathogens have been developed or identified so far in crops.
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Affiliation(s)
- Chungyun Bae
- Department of Horticultural Biotechnology and Institute of Life Science and Resources, College of Life Science, Kyung Hee University, Yongin, 446-701, Korea
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12
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Yang F, Song YR, Li H, Zhang KF, Yao X, Liu C, Qian D, Gao CL, Jia JF. Identifying magnetic anisotropy of the topological surface state of Cr(0.05)Sb(1.95)Te(3) with spin-polarized STM. Phys Rev Lett 2013; 111:176802. [PMID: 24206512 DOI: 10.1103/physrevlett.111.176802] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 05/24/2013] [Indexed: 06/02/2023]
Abstract
The surface magnetic property plays a key role in determining magnetic related quantum phenomena of magnetic topological insulators. Using spin-polarized scanning tunneling microscopy, we investigate the surface magnetism and anisotropy of a Cr doped topological insulator: Cr(0.05)Sb(1.95)Te(3). It is found that the topological surface state of Cr(0.05)Sb(1.95)Te(3) is spin polarized in the surface plane while the bulk shows a ferromagnetism with an out-of-plane easy axis. The upper and lower branch of the helical Dirac cone harbors the opposite spin polarization and the polarization at the Dirac point is zero. Our results show the complexity of surface magnetism of magnetic doped topological insulators.
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Affiliation(s)
- Fang Yang
- Department of Physics and Astronomy, Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education). Shanghai Jiao Tong University, Shanghai 200240, China
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13
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Yang F, Miao L, Wang ZF, Yao MY, Zhu F, Song YR, Wang MX, Xu JP, Fedorov AV, Sun Z, Zhang GB, Liu C, Liu F, Qian D, Gao CL, Jia JF. Spatial and energy distribution of topological edge states in single Bi(111) bilayer. Phys Rev Lett 2012; 109:016801. [PMID: 23031123 DOI: 10.1103/physrevlett.109.016801] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Indexed: 06/01/2023]
Abstract
By combining scanning tunneling microscopy and spectroscopy, angle-resolved photoemission spectroscopy, and density functional theory band calculations, we directly observe and resolve the one-dimensional edge states of single bilayer (BL) Bi(111) islands on clean Bi(2)Te(3) and Bi(111)-covered Bi(2)Te(3) substrates. The edge states are localized in the vicinity of step edges having an ∼2 nm wide spatial distribution in real space and reside in the energy gap of the Bi(111) BL. Our results demonstrate the existence of nontrivial topological edge states of single Bi(111) bilayer as a two-dimensional topological insulator.
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Affiliation(s)
- Fang Yang
- Key Laboratory of Artificial Structures and Quantum Control, Department of Physics, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, China
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14
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Lin LM, Zhang JA, Song YR. [The study of spuirmy inserted endoscopic robot]. Zhongguo Yi Liao Qi Xie Za Zhi 2001; 25:45-35. [PMID: 12583304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper discusses the make-up of the foreing endoscopic robotic system, the model of the moving mechanism, and the application of the squirmy robot. It will provide a new means for minimally invasive surgery, and be valuable to the development of the domestic modern medical engineering.
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Affiliation(s)
- L M Lin
- Shanghai Jiaotong University
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15
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Affiliation(s)
- Y R Song
- Department of Plant Physiology, Institute of Botany, Academia Sinica, Beijing, China
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16
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Abstract
The localization of the cell wall proline-rich proteins (PRPs), and the gene expression of the cell wall glycine-rich proteins (GRPs) and the hydroxyproline-rich glycoproteins (HRGPs) were examined in several dicot species. The PRPs are accumulated in the corner walls of the cortex where several cells are joined together and in the protoxylem cell walls of 3-day-old soybean root. In 1-month-old soybean plants, the PRPs are specifically deposited in xylem vessel elements of the young stem, and they are accumulated in both phloem fibers and xylem vessel elements and fibers of the older stem. Likewise, the PRPs are localized in xylem vessel elements and fibers in tomato, petunia, potato and tobacco stems. They are also found in outer and inner phloem fiber cell walls of tomato stem and in outer phloem fiber cell walls of petunia stem. The gene expression of the HRGPs and the GRPs is developmentally regulated in tomato, petunia and tobacco stems. HRGP mRNAs are abundant in outer and inner phloem regions, while GRP mRNAs are present mostly in primary xylem and in the cambium region. Immunocytochemical localization showed that the GRPs have a localization pattern similar to that of the PRPs in tomato, petunia and tobacco stems.
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Affiliation(s)
- Z H Ye
- Department of Biology, Washington University, St Louis, MO 63130
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