Journal of Microbiology

Journal Article

Tubulysins are Essential for the Preying of Ciliates by Myxobacteria: Uisang Yu , Jiha Kim , Seohui Park , Kyungyun Cho; J. Microbiol. 2023;61(6):627-632. Published online June 14, 2023; DOI: https://doi.org/10.1007/s12275-023-00056-2

51 View
0 Download
3 Web of Science
2 Crossref

Tubulysins are bioactive secondary metabolites produced by myxobacteria that promote microtubule disassembly. Microtubules are required for protozoa such as Tetrahymena to form cilia and flagella. To study the role of tubulysins in myxobacteria, we co-cultured myxobacteria and Tetrahymena. When 4000 Tetrahymena thermophila and 5.0 × 108 myxobacteria were added to 1 ml of CYSE medium and co-cultured for 48 h, the population of T. thermophila increased to more than 75,000. However, co-culturing tubulysin-producing myxobacteria, including Archangium gephyra KYC5002, with T. thermophila caused the population of T. thermophila to decrease from 4000 to less than 83 within 48 h. Almost no dead bodies of T. thermophila were observed in the culture medium. Co-culturing of T. thermophila and the A. gephyra KYC5002 strain with inactivation of the tubulysin biosynthesis gene led to the population of T. thermophila increasing to 46,667. These results show that in nature, most myxobacteria are preyed upon by T. thermophila, but some myxobacteria prey on and kill T. thermophila using tubulysins. Adding purified tubulysin A to T. thermophila changed the cell shape from ovoid to spherical and caused cell surface cilia to disappear.

Citations

Citations to this article as recorded by

Tubulysin Production by the Dead Cells of Archangium gephyra KYC5002
Seohui Park, Chaehyeon Park, Yujin Ka, Kyungyun Cho
Journal of Microbiology.2024; 62(6): 463. CrossRef
Two reasons to kill: predation and kin discrimination in myxobacteria
Christine Kaimer, Michael L. Weltzer, Daniel Wall
Microbiology .2023;[Epub] CrossRef

Review

Protective and pathogenic role of humoral responses in COVID-19: Uni Park , Nam-Hyuk Cho; J. Microbiol. 2022;60(3):268-275. Published online March 2, 2022; DOI: https://doi.org/10.1007/s12275-022-2037-8

63 View
0 Download
5 Web of Science
3 Crossref

Abstract

Since the advent of SARS-CoV-2 in Dec. 2019, the global endeavor to identify the pathogenic mechanism of COVID-19 has been ongoing. Although humoral immunity including neutralizing activity play an important role in protection from the viral pathogen, dysregulated antibody responses may be associated with the pathogenic progression of COVID-19, especially in high-risk individuals. In addition, SARS-CoV-2 spike-specific antibodies acquired by prior infection or vaccination act as immune pressure, driving continuous population turnover by selecting for antibody-escaping mutations. Here, we review accumulating knowledge on the potential role of humoral immune responses in COVID-19, primarily focusing on their beneficial and pathogenic properties. Understanding the multifaceted regulatory mechanisms of humoral responses during SARS-CoV-2 infection can help us to develop more effective therapeutics, as well as protective measures against the ongoing pandemic.

Citations

Citations to this article as recorded by

Rise in broadly cross-reactive adaptive immunity against human β-coronaviruses in MERS-recovered patients during the COVID-19 pandemic
So-Hee Kim, Yuri Kim, Sangeun Jeon, Uni Park, Ju-Il Kang, Kyeongseok Jeon, Hye-Ran Kim, Songhyeok Oh, Ji-Young Rhee, Jae-Phil Choi, Wan Beom Park, Sang Won Park, Jeong-Sun Yang, Joo-Yeon Lee, Jihye Kang, Hyoung-Shik Shin, Yeonjae Kim, Seungtaek Kim, Yeon-
Science Advances.2024;[Epub] CrossRef
Distinctive Combinations of RBD Mutations Contribute to Antibody Evasion in the Case of the SARS-CoV-2 Beta Variant
Tae-Hun Kim, Sojung Bae, Sunggeun Goo, Jinjong Myoung
Journal of Microbiology and Biotechnology.2023; 33(12): 1587. CrossRef
Two years of COVID-19 pandemic: where are we now?
Jinjong Myoung
Journal of Microbiology.2022; 60(3): 235. CrossRef

Journal Articles

Differences in seroprevalence between epicenter and non-epicenter areas of the COVID-19 outbreak in South Korea: Hye Won Jeong , Hyun-Ha Chang , Eun Ji Kim , Yu Kyung Kim , Se-Mi Kim , Eun-Ha Kim , Young-Il Kim , Mark Anthony B. Casel , Seong-Gyu Kim , Rare Rollon , Seung-Gyu Jang , Kwang-Min Yu , Hee-Sung Kim , Hee Sue Park , Su-Jin Park , Yong-Dae Kim , Eung-Gook Kim , Young Ki Choi; J. Microbiol. 2021;59(5):530-533. Published online April 28, 2021; DOI: https://doi.org/10.1007/s12275-021-1095-7

50 View
0 Download
2 Web of Science
2 Crossref

Abstract

To compare the standardized severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) seroprevalence of high epicenter region with non-epicenter region, serological studies were performed with a total of 3,268 sera from Daegu City and 3,981 sera from Chungbuk Province. Indirect immunofluorescence assay (IFA) for SARS-CoV-2 IgG results showed a high seroprevalence rate in the Daegu City (epicenter) compared with a non-epicenter area (Chungbuk Province) (1.27% vs. 0.91%, P = 0.0358). It is noteworthy that the highest seroprevalence in Daegu City was found in elderly patients (70’s) whereas young adult patients (20’s) in Chungbuk Province showed the highest seroprevalence. Neutralizing antibody (NAb) titers were found in three samples from Daegu City (3/3, 268, 0.09%) while none of the samples from Chungbuk Province were NAb positive. These results demonstrated that even following the large outbreak, the seropositive rate of SARS-CoV-2 in the general population remained low in South Korea.

Citations

Citations to this article as recorded by

Distinctive Combinations of RBD Mutations Contribute to Antibody Evasion in the Case of the SARS-CoV-2 Beta Variant
Tae-Hun Kim, Sojung Bae, Sunggeun Goo, Jinjong Myoung
Journal of Microbiology and Biotechnology.2023; 33(12): 1587. CrossRef
The Seroprevalence of SARS-CoV-2 in Children During Early COVID-19 Pandemic in Korea: A Nationwide, Population-Based Study
Jin Lee, Young June Choe, Dohsik Minn, Jong-Hyun Kim
Journal of Korean Medical Science.2022;[Epub] CrossRef

Variations in bacterial and fungal communities through soil depth profiles in a Betula albosinensis forest: Can Du , Zengchao Geng , Qiang Wang , Tongtong Zhang , Wenxiang He , Lin Hou , Yueling Wang; J. Microbiol. 2017;55(9):684-693. Published online September 2, 2017; DOI: https://doi.org/10.1007/s12275-017-6466-8

56 View
0 Download
32 Crossref

Abstract

Microbial communities in subsurface soil are specialized for their environment, which is distinct from that of the surface communities. However, little is known about the microbial communities (bacteria and fungi) that exist in the deeper soil horizons. Vertical changes in microbial alpha-diversity (Chao1 and Shannon indices) and community composition were investigated at four soil depths (0–10, 10–20, 20–40, and 40–60 cm) in a natural secondary forest of Betula albosinensis by high-throughput sequencing of the 16S and internal transcribed spacer rDNA regions. The numbers of operational taxonomic units (OTUs), and the Chao1 and Shannon indices decreased in the deeper soil layers. Each soil layer contained both mutual and specific OTUs. In the 40–60 cm soil layer, 175 and 235 specific bacterial and fungal OTUs were identified, respectively. Acidobacteria was the most dominant bacterial group in all four soil layers, but reached its maximum at 40–60 cm (62.88%). In particular, the 40–60 cm soil layer typically showed the highest abundance of the fungal genus Inocybe (47.46%). The Chao1 and Shannon indices were significantly correlated with the soil organic carbon content. Redundancy analysis indicated that the bacterial communities were closely correlated with soil organic carbon content (P = 0.001). Collectively, these results indicate that soil nutrients alter the microbial diversity and relative abundance and affect the microbial composition.

Citations

Citations to this article as recorded by

Deciphering mycobiota and its functional dynamics in root hairs of Rhododendron campanulatum D. Don through Next-gen sequencing
Nafeesa Farooq Khan, Sheikh Sajad Ahmed, Mukhtar Iderawumi Abdulraheem, Zafar Ahmad Reshi, Abdul Wahab, Gholamreza Abdi
Scientific Reports.2024;[Epub] CrossRef
Fungal diversity and key functional gene abundance in Iowa bioretention cells: implications for stormwater remediation potential
Erica A. Wiener, Jessica M. Ewald, Gregory H. LeFevre
Environmental Science: Processes & Impacts.2024; 26(10): 1796. CrossRef
Lifting the Profile of Deep Forest Soil Carbon
Loretta G. Garrett, Alexa K. Byers, Kathryn Wigley, Katherine A. Heckman, Jeff A. Hatten, Steve A. Wakelin
Soil Systems.2024; 8(4): 105. CrossRef
Interactions of soil nutrients and microbial communities during root decomposition of gramineous and leguminous forages
Can Ma, Xiuru Wang, Jianjia Wang, Xiaoyue Zhu, Chao Qin, Ye Zeng, Wenlong Zhen, Yan Fang, Zhouping Shangguan
Land Degradation & Development.2023; 34(11): 3250. CrossRef
Distribution of microbial communities in seasonally frozen soil layers on the Tibetan Plateau and the driving environmental factors
Xiaojie Wang, Zhiqiang Yu, Guofeng Shen, Hefa Cheng, Shu Tao
Environmental Science and Pollution Research.2023; 30(1): 1919. CrossRef
Vertical Distribution of Soil Bacterial Communities in Different Forest Types Along an Elevation Gradient
Qiuxiang Tian, Qinghu Jiang, Lin Huang, Dong Li, Qiaoling Lin, Zhiyao Tang, Feng Liu
Microbial Ecology.2023; 85(2): 628. CrossRef
Rhizobacterial compositions and their relationships with soil properties and medicinal bioactive ingredients in Cinnamomum migao
Lixia Li, Xuedong Yang, Bingli Tong, Deng Wang, Xiu Tian, Jiming Liu, Jingzhong Chen, Xuefeng Xiao, Shu Wang
Frontiers in Microbiology.2023;[Epub] CrossRef
The vertical distribution and control factor of microbial biomass and bacterial community at macroecological scales
Libing He, Xiangyang Sun, Suyan Li, Wenzhi Zhou, Zhe Chen, Xueting Bai
Science of The Total Environment.2023; 869: 161754. CrossRef
Distribution of soil microorganisms in different complex soil layers in Mu Us sandy land
Zhen Guo, Haiou Zhang, Juan Li, Tianqing Chen, Huanyuan Wang, Yang Zhang, Tunira Bhadauria
PLOS ONE.2023; 18(4): e0283341. CrossRef
Diversity and structure of soil fungal communities unveil the building history of a burial mound of ancient Japan (Tobiotsuka Kofun, Okayama Prefecture)
Samuele Voyron, Chiara Tonon, Laura Guglielmone, Luisella Celi, Cesare Comina, Hajime Ikeda, Naoko Matsumoto, Daniele Petrella, Joseph Ryan, Kazuhiro Sato, Akira Seike, Ivan Varriale, Jun Yamashita, Sergio E. Favero-Longo, Eleonora Bonifacio
Journal of Archaeological Science.2022; 146: 105656. CrossRef
Variations of rhizosphere and bulk soil microbial community in successive planting of Chinese fir (Cunninghamia lanceolata)
Jiachen Chen, Zhifang Deng, Zheng Jiang, Jin Sun, Fangfang Meng, Xiaodong Zuo, Linkun Wu, Guangqiu Cao, Shijiang Cao
Frontiers in Plant Science.2022;[Epub] CrossRef
Soil Fungal Community and Potential Function in Different Forest Ecosystems
Xiaoli Li, Zhaolei Qu, Yuemei Zhang, Yan Ge, Hui Sun
Diversity.2022; 14(7): 520. CrossRef
Interactions of Soil Nutrients and Soil Microbial Communities During Root Decomposition of Gramineous and Leguminous Forages
Can Ma, Xiaoyue Zhu, Xiuru Wang, Jianjia Wang, Chao Qin, Zeng Ye, Wenlong Zhen, Yan Fang, Zhouping Shangguan
SSRN Electronic Journal .2022;[Epub] CrossRef
Effects of soft rock on soil properties and bacterial community in Mu Us Sandy Land, China
Zhen Guo, Wei Hui, Juan Li, Chenxi Yang, Haiou Zhang, Huanyuan Wang
PeerJ.2022; 10: e13561. CrossRef
Diversity of root-associated mycobiome of Betula utilis D. Don: a treeline species in Kashmir Himalaya
Nafeesa Farooq Khan, Zafar Ahmad Reshi
Tropical Ecology.2022; 63(4): 531. CrossRef
The divergent vertical pattern and assembly of soil bacterial and fungal communities in response to short-term warming in an alpine peatland
Xiaodong Wang, Yong Li, Zhongqing Yan, Yanbin Hao, Enze Kang, Xiaodong Zhang, Meng Li, Kerou Zhang, Liang Yan, Ao Yang, Yuechuan Niu, Xiaoming Kang
Frontiers in Plant Science.2022;[Epub] CrossRef
Trends in Microbial Community Composition and Function by Soil Depth
Dan Naylor, Ryan McClure, Janet Jansson
Microorganisms.2022; 10(3): 540. CrossRef
Effects of Tree Composition and Soil Depth on Structure and Functionality of Belowground Microbial Communities in Temperate European Forests
Luis Daniel Prada-Salcedo, Juan Pablo Prada-Salcedo, Anna Heintz-Buschart, François Buscot, Kezia Goldmann
Frontiers in Microbiology.2022;[Epub] CrossRef
Responses of N-Cycling Enzyme Activities and Functional Diversity of Soil Microorganisms to Soil Depth, Pedogenic Processes and Cultivated Plants
Anna Piotrowska-Długosz, Jacek Długosz, Agata Gryta, Magdalena Frąc
Agronomy.2022; 12(2): 264. CrossRef
Characteristics of water extractable organic carbon fractions in the soil profiles of Picea asperata and Betula albosinensis forests
Zhikang Wang, Jiawei Ren, Chenyang Xu, Zengchao Geng, Xuguang Du, Yan Li
Journal of Soils and Sediments.2021; 21(11): 3580. CrossRef
Soil depth matters: shift in composition and inter-kingdom co-occurrence patterns of microorganisms in forest soils
Sunil Mundra, O Janne Kjønaas, Luis N Morgado, Anders Kristian Krabberød, Yngvild Ransedokken, Håvard Kauserud
FEMS Microbiology Ecology.2021;[Epub] CrossRef
Undisturbed Soil Pedon under Birch Forest: Characterization of Microbiome in Genetic Horizons
Natalia B. Naumova, Ivan P. Belanov, Tatiana Y. Alikina, Marsel R. Kabilov
Soil Systems.2021; 5(1): 14. CrossRef
Soil microbial communities and their relationships to soil properties at different depths in an alpine meadow and desert grassland in the Qilian mountain range of China
Baotian Kang, Saman Bowatte, Fujiang Hou
Journal of Arid Environments.2021; 184: 104316. CrossRef
Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient
Qiuxiang Tian, Ying Jiang, Yanan Tang, Yu Wu, Zhiyao Tang, Feng Liu
Frontiers in Microbiology.2021;[Epub] CrossRef
Dynamics of Soil Nutrients, Microbial Community Structure, Enzymatic Activity, and Their Relationships along a Chronosequence of Pinus massoniana Plantations
Jinwen Pan, Qiqiang Guo, Huie Li, Siqiong Luo, Yaqin Zhang, Shan Yao, Xin Fan, Xueguang Sun, Yujiao Qi
Forests.2021; 12(3): 376. CrossRef
Fungal Community Composition and Diversity Vary With Soil Horizons in a Subtropical Forest
Xia Luo, Kezhong Liu, Yuyu Shen, Guojing Yao, Wenguang Yang, Peter E. Mortimer, Heng Gui
Frontiers in Microbiology.2021;[Epub] CrossRef
Deep Soil Layers of Drought-Exposed Forests Harbor Poorly Known Bacterial and Fungal Communities
Beat Frey, Lorenz Walthert, Carla Perez-Mon, Beat Stierli, Roger Köchli, Alexander Dharmarajah, Ivano Brunner
Frontiers in Microbiology.2021;[Epub] CrossRef
Root associated fungi respond more strongly than rhizosphere soil fungi to N fertilization in a boreal forest
Srisailam Marupakula, Shahid Mahmood, Karina E. Clemmensen, Staffan Jacobson, Lars Högbom, Roger D. Finlay
Science of The Total Environment.2021; 766: 142597. CrossRef
Soil microbiome after nine years of fly ash dump spontaneous revegetation
Natalia Naumova, Ivan Belanov, Tatiana Alikina, Marsel Kabilov
Soil Research.2021; 59(7): 673. CrossRef
Vertical changes in bacterial community composition down to a depth of 20 m on the degraded Loess Plateau in China
Guiyao Liu, Lili Chen, Qiang Deng, Xinrong Shi, Thomas Ryan Lock, Robert L. Kallenbach, Zhiyou Yuan
Land Degradation & Development.2020; 31(10): 1300. CrossRef
Microbial communities and soil chemical features associated with commercial production of the medicinal mushroom Ganoderma lingzhi in soil
Le-Qin Ke, Pu-Dong Li, Jian-Ping Xu, Qiu-Shuang Wang, Liang-Liang Wang, Hui-Ping Wen
Scientific Reports.2019;[Epub] CrossRef
Ginkgo agroforestry practices alter the fungal community structures at different soil depths in Eastern China
Jing Guo, Guibin Wang, Yaqiong Wu, Yuanbao Shi, Yu Feng, Fuliang Cao
Environmental Science and Pollution Research.2019; 26(21): 21253. CrossRef

First
Prev
Page of 1
Next
Last

Search