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Comparative genomics analysis of Pediococcus acidilactici species
Zhenzhen Li , Qi Song , Mingming Wang , Junli Ren , Songling Liu , Shancen Zhao
J. Microbiol. 2021;59(6):573-583.   Published online May 15, 2021
DOI: https://doi.org/10.1007/s12275-021-0618-6
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  • 18 Web of Science
  • 18 Crossref
AbstractAbstract
Pediococcus acidilactici is a reliable bacteriocin producer and a promising probiotic species with wide application in the food and health industry. However, the underlying genetic features of this species have not been analyzed. In this study, we performed a comprehensive comparative genomic analysis of 41 P. acidilactici strains from various ecological niches. The bacteriocin production of 41 strains were predicted and three kinds of bacteriocin encoding genes were identified in 11 P. acidilactici strains, namely pediocin PA-1, enterolysin A, and colicin-B. Moreover, whole-genome analysis showed a high genetic diversity within the population, mainly related to a large proportion of variable genomes, mobile elements, and hypothetical genes obtained through horizontal gene transfer. In addition, comparative genomics also facilitated the genetic explanation of the adaptation for host environment, which specify the protection mechanism against the invasion of foreign DNA (i.e. CRISPR/Cas locus), as well as carbohydrate fermentation. The 41 strains of P. acidilactici can metabolize a variety of carbon sources, which enhances the adaptability of this species and survival in different environments. This study evaluated the antibacterial ability, genome evolution, and ecological flexibility of P. acidilactici from the perspective of genetics and provides strong supporting evidence for its industrial development and application.

Citations

Citations to this article as recorded by  
  • Pediococcus acidilactici Y01 reduces HFD-induced obesity via altering gut microbiota and metabolomic profiles and modulating adipose tissue macrophage M1/M2 polarization
    Yujing Wang, Yu Xue, Huan Xu, Qian Zhu, Kaili Qin, Zhonglei He, Aixiang Huang, Min Mu, Xinrong Tao
    Food & Function.2025;[Epub]     CrossRef
  • Draft genome sequence of Pediococcus acidilactici 3G3 isolated from Philippine fermented pork
    Zachary B. Lara, Mia Beatriz C. Amoranto, Francisco B. Elegado, Leslie Michelle M. Dalmacio, Marilen Parungao Balolong, Catherine Putonti
    Microbiology Resource Announcements.2024;[Epub]     CrossRef
  • The Potential of Pediococcus acidilactici Cell-Free Supernatant as a Preservative in Food Packaging Materials
    Katherine Kho, Adinda Darwanti Kadar, Mario Donald Bani, Ihsan Tria Pramanda, Leon Martin, Matthew Chrisdianto, Ferren Pratama, Putu Virgina Partha Devanthi
    Foods.2024; 13(5): 644.     CrossRef
  • The complete genome sequences of the two novel probiotics were isolated from the human gut microbiota: Pediococcus acidilactici WNYM01 and Pediococcus acidilactici WNYM02, vitamin B9, and B2-producers
    Wagiha S. Elkalla, Yasser M. Ragab, Mohamed A. Ramadan, Nahla M. Mansour
    Egyptian Pharmaceutical Journal.2024; 23(4): 702.     CrossRef
  • Effects of Pediococcus acidilactici and Rhizopus Oryzae on protein degradation and flavor formation in fermented mutton sausages
    Zihan Li, Wei Su, Yingchun Mu, Qi Qi, Li Jiang
    LWT.2024; 213: 117075.     CrossRef
  • Putative Probiotic Ligilactobacillus salivarius Strains Isolated from the Intestines of Meat-Type Pigeon Squabs
    Shaoqi Tian, Yinhong Jiang, Qiannan Han, Chuang Meng, Feng Ji, Bin Zhou, Manhong Ye
    Probiotics and Antimicrobial Proteins.2024;[Epub]     CrossRef
  • Effect of ginsenoside fermented by Pediococcus acidilactici XM-06 on preventing diarrhea in mice via regulating intestinal barrier function and gut microbiota
    Wen-Man Xu, Qi Liu, Si-Yao Fan, Zi-Xin Wang, Shi-Rui Lu, Jie Liu, Hong-Jie Piao, Wenxiu Ji, Wei-Wei Dong
    Journal of Functional Foods.2024; 123: 106594.     CrossRef
  • Population and functional genomics of lactic acid bacteria, an important group of food microorganism: Current knowledge, challenges, and perspectives
    Weicheng Li, Qiong Wu, Lai‐yu Kwok, Heping Zhang, Renyou Gan, Zhihong Sun
    Food Frontiers.2024; 5(1): 3.     CrossRef
  • CRISPR-Cas systems of lactic acid bacteria and applications in food science
    Yanhua Cui, Xiaojun Qu
    Biotechnology Advances.2024; 71: 108323.     CrossRef
  • Analyzing the genetic diversity and biotechnological potential of Leuconostoc pseudomesenteroides by comparative genomics
    Ismail Gumustop, Fatih Ortakci
    Frontiers in Microbiology.2023;[Epub]     CrossRef
  • Recent developments in horizontal gene transfer with the adaptive innovation of fermented foods
    Ruhong Wang, Junrui Wu, Nan Jiang, Hao Lin, Feiyu An, Chen Wu, Xiqing Yue, Haisu Shi, Rina Wu
    Critical Reviews in Food Science and Nutrition.2023; 63(5): 569.     CrossRef
  • Changes in Lacto-Fermented Agaricus bisporus (White and Brown Varieties) Mushroom Characteristics, including Biogenic Amine and Volatile Compound Formation
    Elena Bartkiene, Paulina Zarovaite, Vytaute Starkute, Ernestas Mockus, Egle Zokaityte, Gintare Zokaityte, João Miguel Rocha, Romas Ruibys, Dovile Klupsaite
    Foods.2023; 12(13): 2441.     CrossRef
  • Lactiplantibacillus paraplantarum BPF2 and Pediococcus acidilactici ST6, Two Bacteriocinogenic Isolated Strains from Andalusian Spontaneous Fermented Sausages
    José García-López, Claudia Teso-Pérez, Antonio Martín-Platero, Juan Peralta-Sánchez, Juristo Fonollá-Joya, Manuel Martínez-Bueno, Alberto Baños
    Foods.2023; 12(13): 2445.     CrossRef
  • Exploring the impact of initial moisture content on microbial community and flavor generation in Xiaoqu baijiu fermentation
    Huan Wang, Chunhong Sun, Shengzhi Yang, Yulei Ruan, Linjie Lyu, Xuewu Guo, Xiaole Wu, Yefu Chen
    Food Chemistry: X.2023; 20: 100981.     CrossRef
  • Screening and Constructing a Library of Promoter-5′-UTR Complexes with Gradient Strength in Pediococcus acidilactici
    Yize Jia, Chao Huang, Yin Mao, Shenghu Zhou, Yu Deng
    ACS Synthetic Biology.2023; 12(6): 1794.     CrossRef
  • Novel pathways in bacteriocin synthesis by lactic acid bacteria with special reference to ethnic fermented foods
    Basista Rabina Sharma, Prakash M. Halami, Jyoti Prakash Tamang
    Food Science and Biotechnology.2022; 31(1): 1.     CrossRef
  • Genomic analysis and in vivo efficacy of Pediococcus acidilactici as a potential probiotic to prevent hyperglycemia, hypercholesterolemia and gastrointestinal infections
    Hassan M. Al-Emran, Jannatul Ferdouse Moon, Md. Liton Miah, Nigar Sultana Meghla, Rine Christopher Reuben, Mohammad Jashim Uddin, Habiba Ibnat, Shovon Lal Sarkar, Pravas Chandra Roy, M. Shaminur Rahman, A. S. M. Rubayet Ul Alam, Ovinu Kibria Islam, Iqbal
    Scientific Reports.2022;[Epub]     CrossRef
  • Production of Antibacterial Agents and Genomic Characteristics of Probiotics Strains for the Foodborne Pathogen Control
    Su Jin Kim, Jin Song Shin, Han Sol Park, Ji Seop Song, Ki Won Lee, Woo-Suk Bang, Tae Jin Cho
    Current Topic in Lactic Acid Bacteria and Probiotics.2022; 8(1): 1.     CrossRef
Trichoderma biodiversity in major ecological systems of China
Kai Dou , Jinxin Gao , Chulong Zhang , Hetong Yang , Xiliang Jiang , Jishun Li , Yaqian Li , Wei Wang , Hongquan Xian , Shigui Li , Yan Liu , Jindong Hu , Jie Chen
J. Microbiol. 2019;57(8):668-675.   Published online May 23, 2019
DOI: https://doi.org/10.1007/s12275-019-8357-7
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  • 27 Web of Science
  • 25 Crossref
AbstractAbstract
An investigation of Trichoderma biodiversity involving a large-scale environmental gradient was conducted to understand the Trichoderma distribution in China. A total of 3,999 isolates were isolated from forestry, grassland, wetland and agriculture ecosystems, and 50 species were identified based on morphological characteristics and sequence analysis of genetic markers. Trichoderma harzianum showed the largest proportion of isolates and the most extensive distribution. Hypocrea semiorbis, T. epimyces, T. konilangbra, T. piluliferum, T. pleurotum, T. pubescens, T. strictipilis, T. hunua, T. oblongisporum and an unidentified species, Trichoderma sp. MA 3642, were first reported in China. Most Trichoderma species were distributed in Jilin and Heilongjiang Provinces in northeast China and the fewest were distributed in Qinghai Province. Based on the division of ecological and geographic factors, forestry ecosystems and low-altitude regions have the greatest species biodiversity of Trichoderma.

Citations

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  • Genomic Characterization and Establishment of a Genetic Manipulation System for Trichoderma sp. (Harzianum Clade) LZ117
    Jie Yang, Cristopher Reyes Loaiciga, Hou-Ru Yue, Ya-Jing Hou, Jun Li, Cheng-Xi Li, Jing Li, Yue Zou, Shuai Zhao, Feng-Li Zhang, Xin-Qing Zhao
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  • Screening of the Biocontrol Efficacy of Potent Trichoderma Strains against Fusarium oxysporum f.sp. ciceri and Scelrotium rolfsii Causing Wilt and Collar Rot in Chickpea
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    Microorganisms.2024; 12(7): 1280.     CrossRef
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    Scientific Reports.2024;[Epub]     CrossRef
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    Yu Zhao, Sicen Liu, Bing He, Min Sun, Jishou Li, Rong Peng, Liangliang Sun, Xiaopeng Wang, Youpeng Cai, Hehe Wang, Xueqing Geng
    New Zealand Journal of Crop and Horticultural Science.2024; 52(2): 125.     CrossRef
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    Plant Disease.2023; 107(6): 1936.     CrossRef
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    Weifang Xu, Tao Sun, Jiahui Du, Shuqing Jin, Ying Zhang, Guofa Bai, Wanyu Li, Dengke Yin
    BMC Microbiology.2023;[Epub]     CrossRef
  • Beneficial and biocontrol effects of Trichoderma atroviride, a dominant species in white birch rhizosphere soil
    Kuo Liu, Yu-Zhou Zhang, Hua-Ying Du, Zhi-Ying Wang, Pei-Wen Gu, Zhi-Hua Liu, Ze-Yang Yu
    Frontiers in Microbiology.2023;[Epub]     CrossRef
  • Three new species of Trichoderma (Hypocreales, Hypocreaceae) from soils in China
    Rui Zhao, Li-Juan Mao, Chu-Long Zhang
    MycoKeys.2023; 97: 21.     CrossRef
  • Combination of Aspergillus niger MJ1 with Pseudomonas stutzeri DSM4166 or mutant Pseudomonas fluorescens CHA0-nif improved crop quality, soil properties, and microbial communities in barrier soil
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    Journal of Fungi.2023; 9(10): 994.     CrossRef
  • Biocontrol Potential of Trichoderma harzianum and Zinc Nanoparticles to Mitigate Gray Mold Disease of Tomato
    Muhammad Imran, Kamal A. M. Abo-Elyousr, Mohamed E. El-Sharnouby, Esmat F. Ali, Nashwa M. A. Sallam, Hadeel M. M. Khalil Bagy, Ismail R. Abdel-Rahim
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    Muhammad Imran, Kamal A. M. Abo-Elyousr, Magdi A. Mousa, Maged M. Saad
    Egyptian Journal of Biological Pest Control.2022;[Epub]     CrossRef
  • Trichoderma: Advent of Versatile Biocontrol Agent, Its Secrets and Insights into Mechanism of Biocontrol Potential
    Nazia Manzar, Abhijeet Shankar Kashyap, Ravi Shankar Goutam, Mahendra Vikram Singh Rajawat, Pawan Kumar Sharma, Sushil Kumar Sharma, Harsh Vardhan Singh
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    Shimaa A. Zaki, Salama A. Ouf, Fawziah M. Albarakaty, Marian M. Habeb, Aly A. Aly, Kamel A. Abd-Elsalam
    Journal of Fungi.2021; 7(11): 952.     CrossRef
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Molecular diversity and distribution of indigenous arbuscular mycorrhizal communities colonizing roots of two different winter cover crops in response to their root proliferation
Masao Higo , Katsunori Isobe , Yusuke Miyazawa , Yukiya Matsuda , Rhae A. Drijber , Yoichi Torigoe
J. Microbiol. 2016;54(2):86-97.   Published online February 2, 2016
DOI: https://doi.org/10.1007/s12275-016-5379-2
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  • 19 Crossref
AbstractAbstract
A clear understanding of how crop root proliferation affects the distribution of the spore abundance of arbuscular mycorrhizal fungi (AMF) and the composition of AMF communities in agricultural fields is imperative to identify the potential roles of AMF in winter cover crop rotational systems. Toward this goal, we conducted a field trial using wheat (Triticum aestivum L.) or red clover (Trifolium pratense L.) grown during the winter season. We conducted a molecular analysis to compare the diversity and distribution of AMF communities in roots and spore abundance in soil cropped with wheat and red clover. The AMF spore abundance, AMF root colonization, and abundance of root length were investigated at three different distances from winter crops (0 cm, 7.5 cm, and 15 cm), and differences in these variables were found between the two crops. The distribution of specific AMF communities and variables responded to the two winter cover crops. The majority of Glomerales phylotypes were common to the roots of both winter cover crops, but Gigaspora phylotypes in Gigasporales were found only in red clover roots. These
results
also demonstrated that the diversity of the AMF colonizing the roots did not significantly change with the three distances from the crop within each rotation but was strongly influenced by the host crop identity. The distribution of specific AMF phylotypes responded to the presence of wheat and red clover roots, indicating that the host crop identity was much more important than the proliferation of crop roots in determining the diversity of the AMF communities.

Citations

Citations to this article as recorded by  
  • Enhanced Soil Fertility and Carbon Dynamics in Organic Farming Systems: The Role of Arbuscular Mycorrhizal Fungal Abundance
    So Hee Park, Bo Ram Kang, Jinsook Kim, Youngmi Lee, Hong Shik Nam, Tae Kwon Lee
    Journal of Fungi.2024; 10(9): 598.     CrossRef
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    Binita Thapa, Jake Mowrer
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  • The biological sink of atmospheric H2 is more sensitive to spatial variation of microbial diversity than N2O and CO2 emissions in a winter cover crop field trial
    Xavier Baril, Audrey-Anne Durand, Narin Srei, Steve Lamothe, Caroline Provost, Christine Martineau, Kari Dunfield, Philippe Constant
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  • Glomerales Dominate Arbuscular Mycorrhizal Fungal Communities Associated with Spontaneous Plants in Phosphate-Rich Soils of Former Rock Phosphate Mining Sites
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    Microorganisms.2022; 10(12): 2406.     CrossRef
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Research Support, Non-U.S. Gov'ts
A Functional and Phylogenetic Comparison of Quorum Sensing Related Genes in Brucella melitensis 16M
Aniel Jessica Leticia Brambila-Tapia , Ernesto Pérez-Rueda
J. Microbiol. 2014;52(8):709-715.   Published online July 4, 2014
DOI: https://doi.org/10.1007/s12275-014-3570-x
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AbstractAbstract
A quorum-sensing (QS) system is involved in Brucella melitensis survival inside the host cell. Two transcriptional regulators identified in B. melitensis, BlxR and VjbR, regulate the expression of virB, an operon required for bacterial intracellular persistence. In this work, 628 genes affected by VjbR and 124 by BlxR were analyzed to gain insights into their functional and taxonomical distributions among the Bacteria and Archaea cellular domains. In this regard, the Cluster of Orthologous Groups (COG) genes and orthologous genes in 789 nonredundant bacterial and archaeal genomes were obtained and compared against a group of randomly selected genes. From these analyses, we found 71 coaffected genes between VjbR and BlxR. In the COG comparison, VjbR activated genes associated with intracellular trafficking, secretion and vesicular transport and defense mechanisms, while BlxR affected genes related to energy production and conversion (with an equal effect) and translation, ribosomal structure and biogenesis, posttranslational modifications and carbohydrate and amino acid metabolism (with a negative effect). When the taxonomical distribution of orthologous genes was evaluated, the VjbR- and BlxRrelated genes presented more orthologous genes in Crenarchaeota (Archaea), Firmicutes, and Tenericutes and fewer genes in Proteobacteria than expected by chance. These findings suggest that QS system exert a fine-tuning modulation of gene expression, by which VjbR activates genes related to infection persistence and defense, while BlxR represses general bacterial metabolism for intracellular adaptations. Finally, these affected genes present a degree of presence among Bacteria and Archaea genomes that is different from that expected by chance.

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Phylogenetic Relationships of Korean Sparassis latifolia Based on Morphological and ITS rDNA Characteristics
Rhim Ryoo , Hong-Duck Sou , Kang-Hyeon Ka , Hyun Park
J. Microbiol. 2013;51(1):43-48.   Published online March 2, 2013
DOI: https://doi.org/10.1007/s12275-013-2503-4
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  • 22 Scopus
AbstractAbstract
Recent studies based on morphological characteristics and molecular analyses have revealed that the characteristics of Sparassis crispa from Asia are not concordant with those of collections from Europe and North America. Consequently, the Asian isolate was redefined as Sparassis latifolia. This study is the first report of Sparassis latifolia collected in Korea. The taxonomic relationships and replacement of Sparassis species were inferred from a comparison of the morphological characteristics and by molecular sequence analysis of the internal transcribed spacer (ITS) rDNA regions. In particular, this study focused on the phylogenetic relationships inferred from the biogeographical distribution of isolates within the genus Sparassis.
Effects of Phosphate Addition on Biofilm Bacterial Communities and Water Quality in Annular Reactors Equipped with Stainless Steel and Ductile Cast Iron Pipes
Hyun-Jung Jang , Young-June Choi , Hee-Myong Ro , Jong-Ok Ka
J. Microbiol. 2012;50(1):17-28.   Published online February 27, 2012
DOI: https://doi.org/10.1007/s12275-012-1040-x
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  • 34 Scopus
AbstractAbstract
The impact of orthophosphate addition on biofilm formation and water quality was studied in corrosion-resistant stainless steel (STS) pipe and corrosion-susceptible ductile cast iron (DCI) pipe using cultivation and culture-independent approaches. Sample coupons of DCI pipe and STS pipe were installed in annular reactors, which were operated for 9 months under hydraulic conditions similar to a domestic plumbing system. Addition of 5 mg/L of phosphate to the plumbing systems, under low residual chlorine conditions, promoted a more significant growth of biofilm and led to a greater rate reduction of disinfection by-products in DCI pipe than in STS pipe. While the level of THMs (trihalomethanes) increased under conditions of low biofilm concentration, the levels of HAAs (halo acetic acids) and CH (chloral hydrate) decreased in all cases in proportion to the amount of biofilm. It was also observed that chloroform, the main species of THM, was not readily decomposed biologically and decomposition was not proportional to the biofilm concentration; however, it was easily biodegraded after the addition of phosphate. Analysis of the 16S rDNA sequences of 102 biofilm isolates revealed that Proteobacteria (50%) was the most frequently detected phylum, followed by Firmicutes (10%) and Actinobacteria (2%), with 37% of the bacteria unclassified. Bradyrhizobium was the dominant genus on corroded DCI pipe, while Sphingomonas was predominant on non-corroded STS pipe. Methylobacterium and Afipia were detected only in the reactor without added phosphate. PCR-DGGE analysis showed that the diversity of species in biofilm tended to increase when phosphate was added regardless of the pipe material, indicating that phosphate addition upset the biological stability in the plumbing systems.
A Survey of the Geographic Distribution of Ophiocordyceps sinensis
Yi Li , Xiao-Liang Wang , Lei Jiao , Yi Jiang , Hui Li , Si-Ping Jiang , Ngarong Lhosumtseiring , Shen-Zhan Fu , Cai-Hong Dong , Yu Zhan , Yi-Jian Yao
J. Microbiol. 2011;49(6):913-919.   Published online December 28, 2011
DOI: https://doi.org/10.1007/s12275-011-1193-z
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AbstractAbstract
Ophiocordyceps sinensis is one of the best known fungi in Traditional Chinese Medicine. Many efforts have been devoted to locating the production areas of this species resulting in various reports; however, its geographic distribution remains incompletely understood. Distribution of O. sinensis at the county level is clarified in this work based on both a literature search and fieldwork. More than 3600 publications related to O. sinensis were investigated, including scientific papers, books, and online information. Herbarium specimens of O. sinensis and field collections made by this research group during the years 2000-2010 were examined to verify the distribution sites. A total of 203 localities for O. sinensis have been found, of which 106 are considered as confirmed distribution sites, 65 as possible distribution sites, 29 as excluded distribution sites and three as suspicious distribution sites. The results show that O. sinensis is confined to the Tibetan Plateau and its surrounding regions, including Tibet, Gansu, Qinghai, Sichuan, and Yunnan provinces in China and in certain areas of the southern flank of the Himalayas, in the countries of Bhutan, India and Nepal, with 3,000 m as the lowest altitude for the distribution. The fungus is distributed from the southernmost site in Yulong Naxi Autonomous County in northwestern Yunnan Province to the northernmost site in the Qilian Mountains in Qilian County, Qinghai Province, and from the east edge of the Tibetan Plateau in Wudu County, Gansu Province to the westernmost site in Uttarakhand, India. The clarification of the geographic distribution of O. sinensis will lay the foundation for conservation and sustainable use of the species.

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  • DNA barcoding the commercial Chinese caterpillar fungus
    Li Xiang, Jingyuan Song, Tianyi Xin, Yingjie Zhu, Linchun Shi, Xiaolan Xu, Xiaohui Pang, Hui Yao, Wenjia Li, Shilin Chen
    FEMS Microbiology Letters.2013; : n/a.     CrossRef
  • Detection ofOphiocordyceps sinensisin soil by quantitative real-time PCR
    Qingyun Peng, Xin Zhong, Wei Lei, Guren Zhang, Xin Liu
    Canadian Journal of Microbiology.2013; 59(3): 204.     CrossRef
  • On the reliability of DNA sequences ofOphiocordyceps sinensisin public databases
    Shu Zhang, Yong-Jie Zhang, Xing-Zhong Liu, Hong Zhang, Dian-Sheng Liu
    Journal of Industrial Microbiology and Biotechnology.2013; 40(3-4): 365.     CrossRef
  • A Systematic Review of the Mysterious Caterpillar Fungus Ophiocordyceps sinensis in DongChongXiaCao (冬蟲夏草 Dōng Chóng Xià Cǎo) and Related Bioactive Ingredients
    Hui-Chen Lo, Chienyan Hsieh, Fang-Yi Lin, Tai-Hao Hsu
    Journal of Traditional and Complementary Medicine.2013; 3(1): 16.     CrossRef
  • Systematic analyses of Ophiocordyceps lanpingensis sp. nov., a new species of Ophiocordyceps in China
    Zi-Hong Chen, Yong-Dong Dai, Hong Yu, Kun Yang, Zhong-Lin Yang, Feng Yuan, Wen-Bo Zeng
    Microbiological Research.2013; 168(8): 525.     CrossRef
  • Development of conventional and nested PCR assays for the detection of Ophiocordyceps sinensis
    Guo‐Sheng Jin, Xiao‐Liang Wang, Yi Li, Wen‐Jing Wang, Rui‐Heng Yang, Shu‐Yu Ren, Yi‐Jian Yao
    Journal of Basic Microbiology.2013; 53(4): 340.     CrossRef
NOTE] Mitochondrial Phylogeny Reveals Intraspecific Variation in Peronospora effusa, the Spinach Downy Mildew Pathogen
Young-Joon Choi , Marco Thines , Jae-Gu Han , Hyeon-Dong Shin
J. Microbiol. 2011;49(6):1039-1043.   Published online December 28, 2011
DOI: https://doi.org/10.1007/s12275-011-1069-2
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AbstractAbstract
Since about two hundred years, downy mildew caused by Peronospora effusa is probably the most economically important disease of spinach (Spinacia oleracea). However, there is no information on the global phylogeographic structure of the pathogen and thus it is unclear whether a single genotype occurs worldwide
or whether some local genetic variation exists. To investigate the genetic variability of this pathogen, a sequence analysis of two partial mitochondrial DNA genes, cox2 and nad1, was carried out. Thirty-three specimens of Peronospora effusa from four continents were analyzed, including samples from Australia, China, Japan, Korea, Mexico, Russia, Sweden, and the USA. Despite the potential anthropogenic admixture of genotypes, a phylogeographic pattern was observed, which corresponds to two major groups, an Asian/Oceanian clade and another group, which includes American/European specimens. Notably, two of six Japanese specimens investigated did not belong to the Asian/Oceanian clade, but were identical to three of the specimens from the USA, suggestive of a recent introduction from the USA to Japan. As similar introduction events may be occurring as a result of the globalised trade with plant and seed material, a better knowledge of the phylogeographic distribution of pathogens is highly warranted for food security purposes.
Genetic Diversity and Structure of Cordyceps sinensis Populations from Extensive Geographical Regions in China as Revealed by Inter-Simple Sequence Repeat Markers
Hong-Hui Liang , Zhou Cheng , Xiao-Ling Yang , Shan Li , Zu-Quan Ding , Tong-Shui Zhou , Wen-Ju Zhang , Jia-Kuan Chen
J. Microbiol. 2008;46(5):549-556.   Published online October 31, 2008
DOI: https://doi.org/10.1007/s12275-008-0107-1
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AbstractAbstract
Cordyceps sinensis is one of the most valuable medicinal caterpillar fungi native to China. However, its productivity is extremely limited and the species is becoming endangered. The genetic diversity of eighteen C. sinensis populations across its major distributing regions in China was evaluated by inter-simple sequence repeat (ISSR) markers. A total of 141 markers were produced in 180 individuals from the 18 populations, of which 99.3% were polymorphic. The low average of Shannon (0.104) and Nei index (0.07) of the 18 populations indicates that there are little genetic variations within populations. For all 18 populations, estimates of total gene diversity (HT), gene diversity within populations (HS), coefficient of genetic differentiation (GST), and gene flow (Nm) were 0.170, 0.071, 0.583, and 0.357, respectively. This pattern suggests that the genetic diversity of C. sinensis is low and most of the ISSR variations are found among populations with little gene exchange. The 18 populations are divided into five groups based on the genetic distance and the grouping pattern matches with the geographic distribution along the latitudinal gradient. The five groups show obvious difference in the GST and Nm values. Therefore, the genetic diversification of C. sinensis populations may be determined by geographic isolation and the combined effects of life history characters and the interaction with host insect species. The information illustrated by this study is useful for selecting in situ conservation sites of C. sinensis.
Characteristics of HIV-Tat Protein Transduction Domain
Jong-Sub Yoon , Yong-Tae Jung , Seong-Karp Hong , Sun-Hwa Kim , Min-Chul Shin , Dong-Gun Lee , Wan-Shik Shin , Woo-Sung Min , Soon-Young Paik
J. Microbiol. 2004;42(4):328-335.
DOI: https://doi.org/2103 [pii]
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AbstractAbstract
The human immunodeficiency virus type 1 (HIV-1) Tat protein transduction domain (PTD), which contains rich arginine and lysine residues, is responsible for the highly efficient transduction of protein through the plasma membrane. In addition, it can be secreted from infected cells and has the ability to enter neighboring cells. When the PTD of Tat is fused to proteins and exogenously added to cells, the fusion protein can cross plasma membranes. Recent reports indicate that the endogenously expressed Tat fusion protein can demonstrate biodistribution of several proteins. However, intercellular transport and protein transduction have not been observed in some studies. Therefore, this study examined the intercellular transport and protein transduction of the Tat protein. The results showed no evidence of intercellular transport (biodistribution) in a cell culture. Instead, the Tat fusion peptides were found to have a significant effect on the transduction and intercellular localization properties. This suggests that the HIV-1 PTD passes through the plasma membrane in one direction.
Introductory Journal Article
[Editorial]Omics-based microbiome analysis in microbial ecology: from sequences to information
Jang-Cheon Cho
J. Microbiol. 2021;59(3):229-232.
DOI: https://doi.org/10.1007/s12275-021-0698-3
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AbstractAbstract
Microbial ecology is the study of microorganisms present in nature. It particularly focuses on microbial interactions with any biota and with surrounding environments. Microbial ecology is entering its golden age with innovative multi-omics
methods
triggered by next-generation sequencing technologies. However, the extraction of ecologically relevant information from ever-increasing omics data remains one of the most challenging tasks in microbial ecology. This special issue includes 11 review articles that provide an overview of the state of the art of omics-based approaches in the field of microbial ecology, with particular emphasis on the interpretation of omics data, environmental pollution tracking, interactions in microbiomes, and viral ecology.

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  • Advancing early warning and surveillance for zoonotic diseases under climate change: Interdisciplinary systematic perspectives
    Chen-Xi Wang, Le-Shan Xiu, Qin-Qin Hu, Tung-Chun Lee, Jia Liu, Leilei Shi, Xiao-Nong Zhou, Xiao-Kui Guo, Liyuan Hou, Kun Yin
    Advances in Climate Change Research.2023; 14(6): 814.     CrossRef
  • Mercury methylation in boreal aquatic ecosystems under oxic conditions and climate change: a review
    Juanjo Rodríguez
    Frontiers in Marine Science.2023;[Epub]     CrossRef
  • Analyzing Modern Biomolecules: The Revolution of Nucleic-Acid Sequencing – Review
    Gabriel Dorado, Sergio Gálvez, Teresa E. Rosales, Víctor F. Vásquez, Pilar Hernández
    Biomolecules.2021; 11(8): 1111.     CrossRef
  • Microbial diversity analysis of two full-scale seawater desalination treatment trains provides insights into detrimental biofilm formation
    Mircea Podar, Amanda L. May, Weiliang Bai, Kellie Peyton, Dawn M. Klingeman, Cynthia M. Swift, Devan A.F. Linson, Jacques Mathieu, Daniel Siljeström, Ignacio Beneyto, Lauren B. Stadler, Yosef Pinhas, Frank E. Löffler, Pedro J.J. Alvarez, Manish Kumar
    Journal of Membrane Science Letters.2021; 1(1): 100001.     CrossRef
  • Removal of PCR inhibitors from soil DNA by chemical flocculation
    Michael D Braid, Laura M Daniels, Christopher L Kitts
    Journal of Microbiological Methods.2003; 52(3): 389.     CrossRef
Research Support, Non-U.S. Gov'ts
Genetic Variation and Geographic Distribution of Megalocytiviruses
Jun-Young Song , Shin-Ichi Kitamura , Sung-Ju Jung , Toshiaki Miyadai , Shinji Tanaka , Yutaka Fukuda , Seok-Ryel Kim , Myung-Joo Oh
J. Microbiol. 2008;46(1):29-33.
DOI: https://doi.org/10.1007/s12275-007-0184-6
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  • 63 Scopus
AbstractAbstract
Viruses belonging to the genus Megalocytivirus in the family Iridoviridae have caused mass mortalities in marine and freshwater fish in Asian countries. In this study, partial major capsid protein (MCP) gene of seven Japanese and six Korean megalocytiviruses was sequenced and compared with the known megalocytiviruses to evaluate genetic variation and geographic distribution of the viruses. Comparison of MCP gene nucleotide sequences revealed sequence identity of 92.8% or greater among these 48 isolates. A phylogenetic tree clearly revealed three clusters: genotype I including nine Japanese isolates, thirteen Korean isolates, one Chinese isolates, one Thailand isolate and one South China Sea isolate; genotype II including five freshwater fish isolates in Southeast Asian countries and Australia; and the remaining genotype III mainly consisted of flatfish isolate in Korea and China. This suggests that viruses belonging to the genotype I widely distribute among various fish species in many Asian countries. Conversely, the epidemic viruses belonged to genotype II and III are may be still locally spreading and constrained in their prevalence to the limited host fish species, i.e., genotype II viruses mainly distribute in Southeast Asian countries, whereas genotype III viruses distribute in flatfish species in Korea and China.
The Identification of a Novel Pleurotus ostreatus dsRNA Virus and Determination of the Distribution of Viruses in Mushroom Spores
Yeo Jin Kim , Ji Yeon Kim , Ji Hye Kim , Seon Mee Yoon , Young-Bok Yoo , Se Won Yie
J. Microbiol. 2008;46(1):95-99.
DOI: https://doi.org/10.1007/s12275-007-0171-y
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AbstractAbstract
Double-stranded RNAs and virus particles were identified in Pleurotus ostreatus strain Shin-Nong in Korea. Isometric virus particles with a diameter of 33 nm were purified, which are similar to other Pleurotus viruses reported previously. This strain contains 5 dsRNAs, 8.0, 2.5, 2.4, 2.0, and 1.8 kb in size. The virus particles contain 2 dsRNAs, designated RNA-1 (2.5 kb), and RNA-2 (2.4 kb) which is a typical pattern of Partitiviridae. A non-encapsidated dsRNA of about 8.0 kb also was identified. Partial cDNA from RNA-1 was cloned, and sequence analysis revealed that this gene codes for RdRp. The comparison of the sequence from partial cDNA clone showed 35% amino acid homology with the C-terminal end of the RdRp gene of Helicobasidum mompa virus and Rosalinia necatrix virus. Specific primers designed from the partial sequences successfully amplified RT-PCR product from the infected mycelium and a single spore culture. We used these primers to determine the pattern of distribution of viruses in spores. Of the 96 different single spore cultures generated from Shin-Nong strain, a specific RT-PCR product was identified in 25 cultures, indicating that about 26% of basidiospores contain viruses.
Distribution of airborne microorganisms in yellow sands of Korea
Choi, Dae Sung , Park, Yong Keun , Oh, Sang Kon , Yoon, Hee Ju , Kim, Jee Cheon , Seo, Won Jun , Cha, Seung Hee
J. Microbiol. 1997;35(1):1-9.
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AbstractAbstract
Distribution of airborne microorganisms was determined with two different types of air samplers, the Anderson cascade sampler and the Aerobioscope sampler, in the vicinity of Taejon. The size distribution of particles carrying bacteria and fungi was concurrently measured. The concentration of detected viable airborne particles was greatly varied. It was observed that the number of microbial particles increased in April and October. The most size of particles carrying bacteria was larger than 4.7 um in mean aerodiameter, which made up 69.8% of the total particle fraction. About 63.2% of fungi-carrying particles were smaller than 4.7 um in aerodiameter. The distribution of particles on Yellow Sand Phenomena days was also analyzed. The number of fine particles having mass median aero-diameter from 1.0 to 10.mu.m increased on Yellow Sand Phenomena days to about 6 times that on normal days and the n umber of colony forming unit (CFU/㎥) of airborne bacteria also increased by 4.3 times in April. The results from the Anderson sampler showed that the concentration of bacteria increased greatly on the fraction of fine particles ranging from 0.6 um to 4.7 um in diameter. Unlike the increase in bacterial floraon Yellow Sand Phenomena days, the fungal concentration slightly decreased and showed a normal size distribution pattern. This study suggests that a long-range transmission of bacteria results form bacteria adsorbing onto the fine particles during the Yellow Sand Phenomena.

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