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Journal of Microbiology / the Microbiological Society of Korea

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https://www.readbyqxmd.com/read/29721835/erratum-to-a-murine-colitis-model-developed-using-a-combination-of-dextran-sulfate-sodium-and-citrobacter-rodentium
#1
Jin-Il Park, Sun-Min Seo, Jong-Hyung Park, Hee-Yeon Jeon, Jun-Young Kim, Seung-Hyun Ryu, Yang-Kyu Choi
In the article by Park et al. published in Journal of Microbiology 2018; 56, 272-279, the supplementary data Figs S1 and S2 should be corrected as below. The original article can be found online at https://doi.org/10.1007/s12275-018-7504-x .
May 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29721834/comparative-genomic-analysis-of-geosporobacter-ferrireducens-and-its-versatility-of-anaerobic-energy-metabolism
#2
Man-Young Jung, So-Jeong Kim, Jong-Geol Kim, Heeji Hong, Joo-Han Gwak, Soo-Je Park, Yang-Hoon Kim, Sung-Keun Rhee
Members of the family Clostridiaceae within phylum Firmicutes are ubiquitous in various iron-reducing environments. However, genomic data on iron-reducing bacteria of the family Clostridiaceae, particularly regarding their environmental distribution, are limited. Here, we report the analysis and comparison of the genomic properties of Geosporobacter ferrireducens IRF9, a strict anaerobe that ferments sugars and degrades toluene under iron-reducing conditions, with those of the closely related species, Geosporobacter subterraneus DSM 17957...
May 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29721833/an-efficient-agrobacterium-mediated-transformation-method-for-aflatoxin-generation-fungus-aspergillus-flavus
#3
Guomin Han, Qian Shao, Cuiping Li, Kai Zhao, Li Jiang, Jun Fan, Haiyang Jiang, Fang Tao
Aspergillus flavus often invade many important corps and produce harmful aflatoxins both in preharvest and during storage stages. The regulation mechanism of aflatoxin biosynthesis in this fungus has not been well explored mainly due to the lack of an efficient transformation method for constructing a genome-wide gene mutant library. This challenge was resolved in this study, where a reliable and efficient Agrobacterium tumefaciens-mediated transformation (ATMT) protocol for A. flavus NRRL 3357 was established...
May 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29721832/core-gut-microbiota-in-jinhua-pigs-and-its-correlation-with-strain-farm-and-weaning-age
#4
Hua Yang, Yingping Xiao, Junjun Wang, Yun Xiang, Yujie Gong, Xueting Wen, Defa Li
Gut microbial diversity and the core microbiota of the Jinhua pig, which is a traditional, slow-growing Chinese breed with a high body-fat content, were examined from a total of 105 fecal samples collected from 6 groups of pigs at 3 weaning ages that originated from 2 strains and were raised on 3 different pig farms. The bacterial community was analyzed following high-throughput pyrosequencing of 16S rRNA genes, and the fecal concentrations of short-chain fatty acids (SCFAs) were measured by gas chromatograph...
May 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29721831/highly-diverse-endophytes-in-roots-of-cycas-bifida-cycadaceae-an-ancient-but-endangered-gymnosperm
#5
Ying Zheng, Tzen-Yuh Chiang, Chao-Li Huang, Xun Gong
As an ancient seed plant, cycads are one of the few gymnosperms that develop a root symbiosis with cyanobacteria, which has allowed cycads to cope with harsh geologic and climatic conditions during the evolutionary process. However, the endophytic microbes in cycad roots remain poorly identified. In this study, using next-generation sequencing techniques, we investigated the microbial diversity and composition of both the coralloid and regular roots of Cycas bifida (Dyer) K.D. Hill. Highly diverse endophytic communities were observed in both the coralloid and regular roots...
May 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29721830/terrabacter-ginsengisoli-sp-nov-isolated-from-ginseng-cultivating-soil
#6
Mei-Fang Jin, Xiao-Tian Quan, Muhammad Zubair Siddiqi, Qing-Zhen Liu, Hong-Shan Yu, Wan-Taek Im
A Gram-positive, strictly aerobic, nonmotile, yellowish, coccus-rod-shaped bacterium (designated Gsoil 653T ) isolated from ginseng cultivating soil was characterized using a polyphasic approach to clarify its taxonomic position. The strain Gsoil 653T exhibited optimal growth at pH 7.0 on R2A agar medium at 30°C. Phylogenetic analysis based on 16S rRNA gene sequence similarities, indicated that Gsoil 653T belongs to the genus Terrabacter of the family Humibacillus, and was closely related to Terrabacter tumescens DSM 20308T (98...
May 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29721829/tardibacter-chloracetimidivorans-gen-nov-sp-nov-a-novel-member-of-the-family-sphingomonadaceae-isolated-from-an-agricultural-soil-from-jeju-island-in-republic-of-korea
#7
Hyosun Lee, Dong-Uk Kim, Sooyeon Park, Jung-Hoon Yoon, Jae-Hyung Ahn, Jong-Ok Ka
A pale yellow bacterial strain, designated JJ-A5T , was isolated form an agricultural soil from Jeju Island in Republic of Korea. Cells of the strain were Gram-stain-negative, motile, flagellated and rod-shaped. The strain grew at 15-30°C, pH 6.0-9.0, and in the presence of 0-1.5% (w/v) NaCl. Growth occurred on R2A, but not on Luria-Bertani agar, nutrient agar, trypticase soy agar and MacConkey agar. The strain utilized alachlor as a sole carbon source for growth. The strain JJ-A5T showed 16S rRNA gene sequence similarities lower than 95...
May 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29721828/characterization-of-flavobacterium-aquimarinum-sp-nov-a-halotolerant-bacterium-isolated-from-seawater
#8
Sylvia Kristyanto, Tuan Manh Nguyen, Dhiraj Kumar Chaudhary, Sang-Seob Lee, Jaisoo Kim
A novel, aerobic, Gram-stain-negative, non-motile, non-spore forming, rod-shaped bacterium, designated strain Dol 15-39T , was isolated from a seawater sample near Geoje Island in the South Sea, Republic of Korea. The strain was found to be oxidase-negative and catalase-positive. The isolate was observed to grow at temperatures from 4 to 37°C, at salinities of up to 7%, and at pH levels from 6 to 9; moreover, it was not able to degrade starch, DNA, esculin, or tyrosine. Phylogenetic analysis based on 16S rRNA gene sequences showed that Dol 15-39T was most closely related to Flavobacterium jumunjinense HME7102T with a sequence similarity of 97...
May 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29721827/burkholderia-alba-sp-nov-isolated-from-a-soil-sample-on-halla-mountain-in-jeju-island
#9
Jae-Won Lee, Ye-Eun Kim, Soo-Je Park
A rod-shaped, round and white colony-forming strain AD18T was isolated from the soil on Halla mountain in Jeju Island, Republic of Korea. Comparative analysis of 16S rRNA gene sequence revealed that this strain was closely related to Burkholderia oklahomensis C6786T (98.8%), Burkholderia thailandensis KCTC 23190T (98.5%). DNA-DNA relatedness (14.6%) indicated that the strain AD18T represents a distinct species that is separate from B. oklahomensis C6786T . The isolate grew at pH 5.0-9.0 (optimum, pH 7.0), 0-3% (w/v) NaCl (optimum, 0%), and temperature 10-40°C (optimum 35°C)...
May 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29721826/importance-of-differential-identification-of-mycobacterium-tuberculosis-strains-for-understanding-differences-in-their-prevalence-treatment-efficacy-and-vaccine-development
#10
REVIEW
Hansong Chae, Sung Jae Shin
Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb), remains a serious global health problem in the 21st century because of its high mortality. Mtb is an extremely successful human-adapted pathogen that displays a multifactorial ability to control the host immune response and to evade killing by drugs, resulting in the breakdown of BCG vaccine-conferred anti-TB immunity and development of multidrug-resistant (MDR) and extensively drug-resistant (XDR) Mtb. Although genetic components of the genomes of the Mtb complex strains are highly conserved, showing over 99% similarity to other bacterial genera, recently accumulated evidence suggests that the genetic diversity of the Mtb complex strains has implications for treatment outcomes, development of MDR/XDR Mtb, BCG vaccine efficacy, transmissibility, and epidemiological outbreaks...
May 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29721825/cure-of-tuberculosis-using-nanotechnology-an-overview
#11
REVIEW
Rout George Kerry, Sushanto Gouda, Bikram Sil, Gitishree Das, Han-Seung Shin, Gajanan Ghodake, Jayanta Kumar Patra
Mycobacterium tuberculosis is the causative agent of tuberculosis (TB), a major health issue of the present era. The bacterium inhabits the host macrophage and other immune cells where it modulates the lysosome trafficking protein, hinders the formation of phagolysosome, and blocks the TNF receptor-dependent apoptosis of host macrophage/monocytes. Other limitations such as resistance to and low bioavailability and bio-distribution of conventional drugs aid to their high virulence and human mortality. This review highlights the use of nanotechnology-based approaches for drug formulation and delivery which could open new avenues to limit the pathogenicity of tuberculosis...
May 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29611140/a-murine-colitis-model-developed-using-a-combination-of-dextran-sulfate-sodium-and-citrobacter-rodentium
#12
Jin-Il Park, Sun-Min Seo, Jong-Hyung Park, Hee-Yeon Jeon, Jun-Young Kim, Seung-Hyun Ryu, Yang-Kyu Choi
Adult mice were treated with dextran sulfate sodium (DSS) and infected with Citrobacter rodentium for developing a novel murine colitis model. C57BL/6N mice (7-week-old) were divided into four groups. Each group composed of control, dextran sodium sulfate-treated (DSS), C. rodentium-infected (CT), and DSS-treated and C. rodentium-infected (DSS-CT) mice. The DSS group was administered 1% DSS in drinking water for 7 days. The CT group was supplied with normal drinking water for 7 days and subsequently infected with C...
April 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29611139/identification-of-a-novel-phospholipase-d-gene-and-effects-of-carbon-sources-on-its-expression-in-bacillus-cereus-zy12
#13
Yu Zhao, Yinfeng Xu, Fang Yu, Chunzhi Zhang
In the present study, a new strain, Bacillus cereus ZY12, producing phospholipase D (PLD) was identified. The expression of PLD in this strain was found to be induced by its substrate, phosphatidylcholine (PC), and completely silenced by other carbon sources, such as glucose, fructose, and maltose, which are generally used in microbial growth cultures, thus presenting a unique expression pattern different from other PLD-producing microorganisms. This study is the first to report on the ability of B. cereus to produce PLD, and successfully clone its PLD-coding gene and identify its function, extending the knowledge on PLD distribution and evolution in microorganisms...
April 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29611138/hymenobacter-terrigena-sp-nov-isolated-from-soil
#14
Jeong-Eun Ohn, Leonid N Ten, Kyeung Il Park, Byung-Oh Kim, Jeung-Sul Han, Hee-Young Jung
A Gram-stain-negative, non-motile, non-spore-forming, rodshaped, aerobic bacterial strain, designated S1-2-2-5T , was isolated from the Jeollabuk-do province, Republic of Korea, and was characterized taxonomically using a polyphasic approach. Comparative 16S rRNA gene sequence analysis showed that strain S1-2-2-5T belonged to the family Cytophagaceae in phylum Bacteroidetes, and was most closely related to Hymenobacter terrae DG7AT (98.2%), Hymenobacter rubidus DG7BT (98.0%), Hymenobacter soli PB17T (97.7%), Hymenobacter daeguensis 16F3Y-2T (97...
April 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29611137/taxonomic-description-and-genome-sequence-of-halobacillus-marinus-sp-nov-a-novel-strain-isolated-from-chilika-lake-india
#15
Ananta N Panda, Samir Ranjan Mishra, Lopamudra Ray, Surajit Das, Gurdeep Rastogi, Ajit Kumar Pattanaik, Tapan Kumar Adhya, Mrutyunjay Suar, Vishakha Raina
moderately halophilic spore forming, motile, Gram-positive, rod-shaped bacterial strain designated as KGW1T was isolated from water sample of Chilika Lake and characterized taxonomically using polyphasic approach. The strain grew in the presence of 0-25% (w/v) NaCl in marine salt agar media, hydrolyzes casein, and gelatin and shows presence of alkaline proteases. The major cell wall menaquinone was MK7 and major cellular fatty acids were anteiso-C15:0 (44.89%), anteiso-C17:0 (6.18%), isoC15:0 (19.38%), and iso-C16:0 (7...
April 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29492869/ubcg-up-to-date-bacterial-core-gene-set-and-pipeline-for-phylogenomic-tree-reconstruction
#16
Seong-In Na, Yeong Ouk Kim, Seok-Hwan Yoon, Sung-Min Ha, Inwoo Baek, Jongsik Chun
Genome-based phylogeny plays a central role in the future taxonomy and phylogenetics of Bacteria and Archaea by replacing 16S rRNA gene phylogeny. The concatenated core gene alignments are frequently used for such a purpose. The bacterial core genes are defined as single-copy, homologous genes that are present in most of the known bacterial species. There have been several studies describing such a gene set, but the number of species considered was rather small. Here we present the up-to-date bacterial core gene set, named UBCG, and software suites to accommodate necessary steps to generate and evaluate phylogenetic trees...
April 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29492868/rapid-and-robust-maldi-tof-ms-techniques-for-microbial-identification-a-brief-overview-of-their-diverse-applications
#17
REVIEW
Kyoung-Soon Jang, Young Hwan Kim
in mass spectrometry have enabled the investigation of various biological systems by directly analyzing diverse sets of biomolecules (i.e., proteins, lipids, and carbohydrates), thus making a significant impact on the life sciences field. Over the past decade, matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) has been widely utilized as a rapid and reliable method for the identification of microorganisms. MALDI-TOF MS has come into widespread use despite its relatively low resolving power (full width at half maximum, FWHM: < 5,000) and its incompatibility with tandem MS analysis, features with which other high-resolution mass spectrometers are equipped...
April 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29492867/hydrogen-sulfide-inhibits-the-growth-of-escherichia-coli-through-oxidative-damage
#18
Liu-Hui Fu, Zeng-Zheng Wei, Kang-Di Hu, Lan-Ying Hu, Yan-Hong Li, Xiao-Yan Chen, Zhuo Han, Gai-Fang Yao, Hua Zhang
Many studies have shown that hydrogen sulfide (H2 S) is both detrimental and beneficial to animals and plants, whereas its effect on bacteria is not fully understood. Here, we report that H2 S, released by sodium hydrosulfide (NaHS), significantly inhibits the growth of Escherichia coli in a dose-dependent manner. Further studies have shown that H2 S treatment stimulates the production of reactive oxygen species (ROS) and decreases glutathione (GSH) levels in E. coli, resulting in lipid peroxidation and DNA damage...
April 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29492866/bacillus-spongiae-sp-nov-isolated-from-sponge-of-jeju-island
#19
Ga-Eun Lee, Wan-Taek Im, Jin-Sook Park
A Gram-reaction-positive, strictly aerobic, motile, endospore- forming, and rod-shaped bacterial strain designated 135PIL107-10T was isolated from a sponge on Jeju Island, and its taxonomic position was investigated using a polyphasic approach. Strain 135PIL107-10T grew at 20-37°C (optimum temperature, 25°C) and pH 6.0-10.0 (optimum pH, 6.0) on marine and R2A agars. Based on 16S rRNA gene phylogeny analysis, the novel strain formed a new branch within the genus Bacillus of the family Bacillaceae, and formed clusters with Bacillus thaohiensis NHI-38T (96...
April 2018: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29492865/proteome-analysis-reveals-global-response-to-deletion-of-mrflba-in-monascus-ruber
#20
Qingqing Yan, Zhouwei Zhang, Yishan Yang, Fusheng Chen, Yanchun Shao
Monascus spp. are commonly used for a wide variety of applications in the food and pharmaceutical industries. In previous studies, the knock-out of mrflbA (a putative regulator of the G protein α subunit) in M. ruber led to autolysis of the mycelia, decreased pigmentation and lowered mycotoxin production. Therefore, we aimed to obtain a comprehensive overview of the underlying mechanism of mrflbA deletion at the proteome level. A two-dimensional gel electrophoresis analysis of mycelial proteins indicated that the abundance of 178 proteins was altered in the ΔmrflbA strain, 33 of which were identified with high confidence...
April 2018: Journal of Microbiology / the Microbiological Society of Korea
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