Two Gram-stain-positive, facultatively anaerobic, non-hemolytic, coccoid-shaped bacterial strains, designated MS01(T) and MS02, were isolated from cabbage watery kimchi in the Republic of Korea. Cellular growth occurred at 5-25 ℃ (optimum, 20 ℃), pH 5-8 (optimum, pH 7) and in the presence of 0-5% (w/v) NaCl (optimum, 1%). Results of 16S rRNA gene-based phylogenetic analyses showed that strains MS01(T) and MS02 shared identical sequences, clustered within the Leuconostoc clade in phylogenetic trees, and were most closely related to Leuconostoc inhae IH003(T) and Leuconostoc gasicomitatum LMG 18811(T) with sequence similarities of 98.74%. The complete whole-genome sequences of strains MS01(T) and MS02 measured 2.04-2.06 Mbp and harbored a 50.6 kb plasmid, with DNA G + C contents of 37.7% for both. Based on average nucleotide identities (ANI) and digital DNA-DNA hybridization (dDDH) values, both strains were confirmed to belong to the same species but showed ≤ 85.9% ANI and ≤ 29.9% dDDH values to other Leuconostoc species, indicating that they represent a novel species. Metabolic pathway reconstruction revealed that both strains perform heterolactic acid fermentation, producing lactate, acetate, and ethanol. Chemotaxonomic analyses, including cellular fatty acids, polar lipids, and peptidoglycan amino acid, confirmed the inclusion of both strains within the genus Leuconostoc. Based on the phylogenetic, genomic, and phenotypic characterization, strains MS01(T) and MS02 were considered to represent a novel species within the genus Leuconostoc, for which the name Leuconostoc aquikimchii sp. nov. is proposed with MS01(T) (= KACC 23748(T) = JCM 37028(T)) as the type strain.
Two Gram-stain-negative, aerobic, motile by means of flagella, short rod-shaped bacterial strains, designated IMCC43200(T) and IMCC45268(T), were isolated from coastal seawater samples collected from the South Sea of Korea. Strains IMCC43200(T) and IMCC45268(T) shared 98.6% 16S rRNA gene sequence similarity and were closely related to Congregibacter litoralis KT71(T) (98.8% and 98.7%, respectively). Complete whole-genome sequences of IMCC43200(T) and IMCC45268(T) were 3.93 and 3.86 Mb in size with DNA G + C contents of 54.8% and 54.2%, respectively. Average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between the two strains were 74.5% and 23.4%, respectively, revealing that they are independent species. The two strains showed ANI values of ≤ 75.8% and dDDH values of ≤ 23.0% to the type and only species of the genus Congregibacter (C. litoralis), indicating that each strain represents a novel species. Both strains contained summed feature 3 (comprising C(16:1) ω6c and/or C(16:1) ω7c) and summed feature 8 (comprising C(18:1) ω6c and/or C(18:1) ω7c) as major fatty acid constituents. The predominant isoprenoid quinone detected in both strains was ubiquinone-8 (Q-8). The major polar lipids of the two strains were phosphatidylethanolamine, phosphatidylglycerol, phospholipids, and aminolipids. Based on the phylogenetic, genomic, and phenotypic characterization, strains IMCC43200(T) and IMCC45268(T) were considered to represent two novel species within the genus Congregibacter, for which the names Congregibacter variabilis sp. nov. and Congregibacter brevis sp. nov. are proposed with IMCC43200(T) (= KCTC 8133(T) = NBRC 116295(T) = CCTCC AB 2023139(T)) and IMCC45268(T) (= KCTC 92921(T) = NBRC 116135(T)) as the type strains, respectively.
Citations
Citations to this article as recorded by
Leuconostoc aquikimchii sp. nov., a Lactic Acid Bacterium Isolated from Cabbage Watery Kimchi Subin Kim, Se Hee Lee, Ki Hyun Kim, Misun Yun Journal of Microbiology.2024; 62(12): 1089. CrossRef
Production of medium chain length polyhydroxyalkanoate (mcl-PHA) was attempted using Pseudomonas gessardii NIBRBAC000509957, which was isolated from Sunchang, Jeollabuk-do, Republic of Korea (35°24'27.7"N, 127°09'13.0"E) and effectively utilized acetate and formate as carbon sources. We first evaluated the utilization of acetate as a carbon source, revealing optimal growth at 5 g/L acetate. Then, formate was supplied to the acetate minimal medium as a carbon source to enhance cell growth. After overexpressing the acetate and formate assimilation pathway enzymes, this strain grew at a significantly higher rate in the medium. As this strain naturally produces PHA, it was further engineered metabolically to enhance mcl-PHA production. The engineered strain produced 0.40 g/L of mcl-PHA with a biomass content of 30.43% in fed-batch fermentation.
Overall, this strain can be further developed to convert acetate and formate into valuable products.
We isolated and analyzed a novel, Gram-stain-positive, aerobic, rod-shaped, non-motile actinobacterium, designated as strain ZFBP1038(T), from rock sampled on the north slope of Mount Everest. The growth requirements of this strain were 10-37 °C, pH 4-10, and 0-6% (w/v) NaCl. The sole respiratory quinone was MK-9, and the major fatty acids were anteiso-C(15:0) and iso-C(17:0). Peptidoglycan containing meso-diaminopimelic acid, ribose, and glucose were the major cell wall sugars, while polar lipids included diphosphatidyl glycerol, phosphatidyl glycerol, an unidentified phospholipid, and an unidentified glycolipid. A phylogenetic analysis based on 16S rRNA gene sequences showed that strain ZFBP1038(T) has the highest similarity with Spelaeicoccus albus DSM 26341( T) (96.02%). ZFBP1038(T) formed a distinct monophyletic clade within the family Brevibacteriaceae and was distantly related to the genus Spelaeicoccus. The G + C content of strain ZFBP1038(T) was 63.65 mol% and the genome size was 4.05 Mb.
Digital DNA-DNA hybridization, average nucleotide identity, and average amino acid identity values between the genomes of strain ZFBP1038(T) and representative reference strains were 19.3-25.2, 68.0-71.0, and 52.8-60.1%, respectively.
Phylogenetic, phenotypic, and chemotaxonomic characteristics as well as comparative genome analyses suggested that strain ZFBP1038(T) represents a novel species of a new genus, for which the name Saxibacter gen. nov., sp. nov. was assigned with the type strain Saxibacter everestensis ZFBP1038(T) (= EE 014( T) = GDMCC 1.3024( T) = JCM 35335( T)).
Escherichia coli RclA and Staphylococcus aureus MerA are part of the Group I flavoprotein disulfide reductase (FDR) family
and have been implicated in the contribution to bacterial pathogenesis by defending against the host immune response.
Fusobacterium nucleatum is a pathogenic, anaerobic Gram-negative bacterial species commonly found in the human oral
cavity and gastrointestinal tract. In this study, we discovered that the F. nucleatum protein FN0820, belonging to the Group I
FDR family, exhibited a higher activity of a Cu2+-
dependent NADH oxidase than E. coli RclA. Moreover, FN0820 decreased
the dissolved oxygen level in the solution with higher NADH oxidase activity. We found that L-tryptophan and its analog
5-hydroxytryptophan inhibit the FN0820 activities of NADH oxidase and the concomitant reduction of oxygen. Our results
have implications for developing new treatment strategies against pathogens that defend the host immune response with
Group I FDRs.
Citations
Citations to this article as recorded by
The role of metals in hypothiocyanite resistance in
Escherichia coli
Michael J. Gray, Laurie E. Comstock Journal of Bacteriology.2024;[Epub] CrossRef
Many freshwater cyanobacteria, including Microcystis aeruginosa, lack several known antibiotic resistance genes; however,
both axenic and xenic M. aeruginosa strains exhibited high antibiotic resistance against many antibiotics under our tested
concentrations, including colistin, trimethoprim, and kanamycin. Interestingly, axenic PCC7806, although not the xenic
NIBR18 and NIBR452 strains, displayed susceptibility to ampicillin and amoxicillin, indicating that the associated bacteria
in the phycosphere could confer such antibiotic resistance to xenic strains. Fluorescence and scanning electron microscopic
observations revealed their tight association, leading to possible community-level β-lactamase activity. Combinatory treatment
of ampicillin with a β-lactamase inhibitor, sulbactam, abolished the ampicillin resistance in the xenic stains. The
nitrocefin-based assay confirmed the presence of significant community-level β-lactamase activity. Our tested low ampicillin
concentration and high β-lactamase activity could potentially balance the competitive advantage of these dominant species
and provide opportunities for the less competitive species, thereby resulting in higher bacterial diversity under ampicillin
treatment conditions. Non-PCR-based metagenome data from xenic NIBR18 cultures revealed the dominance of blaOXArelated
antibiotic resistance genes followed by other class A β-lactamase genes (AST-1 and FAR-1). Alleviation of ampicillin
toxicity could be observed only in axenic PCC7806, which had been cocultured with β-lactamase from other freshwater
bacteria. Our study suggested M. aeruginosa develops resistance to old-class β-lactam antibiotics through altruism, where
associated bacteria protect axenic M. aeruginosa cells.
Citations
Citations to this article as recorded by
Sustainable control of Microcystis aeruginosa, a harmful cyanobacterium, using Selaginella tamariscina extracts Wonjae Kim, Yerim Park, Minkyung Kim, Yeji Cha, Jaejoon Jung, Che Ok Jeon, Woojun Park Ecotoxicology and Environmental Safety.2024; 277: 116375. CrossRef
Microcystis abundance is predictable through ambient bacterial communities: A data-oriented approach Mingyeong Kang, Dong-Kyun Kim, Ve Van Le, So-Ra Ko, Jay Jung Lee, In-Chan Choi, Yuna Shin, Kyunghyun Kim, Chi-Yong Ahn Journal of Environmental Management.2024; 368: 122128. CrossRef
Enhanced mechanical properties of living and regenerative building materials by filamentous Leptolyngbya boryana Yongjun Son, Jihyeon Min, Indong Jang, Jiyoon Park, Chongku Yi, Woojun Park Cell Reports Physical Science.2024; 5(8): 102098. CrossRef
Food Webs and Feedbacks: The Untold Ecological Relevance of Antimicrobial Resistance as Seen in Harmful Algal Blooms Aabir Banerji, Nichole E. Brinkman, Benjamin Davis, Alison Franklin, Michael Jahne, Scott P. Keely Microorganisms.2024; 12(11): 2121. CrossRef
Extensive Genomic Rearrangement of Catalase-Less Cyanobloom-Forming Microcystis aeruginosa in Freshwater Ecosystems Minkyung Kim, Jaejoon Jung, Wonjae Kim, Yerim Park, Che Ok Jeon, Woojun Park Journal of Microbiology.2024; 62(11): 933. CrossRef
Biological and Chemical Approaches for Controlling Harmful Microcystis Blooms Wonjae Kim, Yerim Park, Jaejoon Jung, Che Ok Jeon, Masanori Toyofuku, Jiyoung Lee, Woojun Park Journal of Microbiology.2024; 62(3): 249. CrossRef
Alleviation of H2O2 toxicity by extracellular catalases in the phycosphere of Microcystis aeruginosa Yerim Park, Wonjae Kim, Yeji Cha, Minkyung Kim, Woojun Park Harmful Algae.2024; 137: 102680. CrossRef
Basal stem rot incidence caused by a white-rot fungus, Ganoderma boninense, is the major disease of oil palm in Southeast
Asia. The rate of disease transmission and host damage are affected by variations in pathogen aggressiveness. Several other
studies have used the disease severity index (DSI) to determine G. boninense aggressiveness levels while verifying disease
using a culture-based method, which might not provide accurate results or be feasible in all cases. To differentiate G.
boninense aggressiveness, we employed the DSI and vegetative growth measurement of infected oil palm seedlings. Disease
confirmation was performed through scanning electron microscopy and molecular identification of fungal DNA from both
infected tissue and fungi isolated from Ganoderma selective medium. Two-month-old oil palm seedlings were artificially
inoculated with G. boninense isolates (2, 4A, 5A, 5B, and 7A) sampled from Miri (Lambir) and Mukah (Sungai Meris and
Sungai Liuk), Sarawak. The isolates were categorized into three groups: highly aggressive (4A and 5B), moderately aggressive
(5A and 7A), and less aggressive (2). Isolate 5B was identified as the most aggressive, and it was the only one to result
in seedling mortality. Out of the five vegetative growth parameters measured, only the bole size between treatments was not
affected. The integration of both conventional and molecular approaches in disease confirmation allows for precise detection.
Citations
Citations to this article as recorded by
An In-Depth Study of Phytopathogenic Ganoderma: Pathogenicity, Advanced Detection Techniques, Control Strategies, and Sustainable Management Samantha C. Karunarathna, Nimesha M. Patabendige, Wenhua Lu, Suhail Asad, Kalani K. Hapuarachchi Journal of Fungi.2024; 10(6): 414. CrossRef
Advancements in the nanodelivery of azole-based fungicides to control oil palm pathogenic fungi Azren Aida Asmawi, Fatmawati Adam, Nurul Aini Mohd Azman, Mohd Basyaruddin Abdul Rahman Heliyon.2024; 10(18): e37132. CrossRef
Characterizations of Ganoderma species causing basal stem rot disease in coconut tree Umesh Sajjan, Manjunath Hubballi, Abhay K. Pandey, V. Devappa, H. P. Maheswarappa 3 Biotech.2024;[Epub] CrossRef
Microbial communities played a vital role in maintaining homeostasis of ocular surface. However, no studies explored the
myopia-associated conjunctiva microbiota changes until now. In this study, conjunctival sac swab specimens were collected
from 12 eyes of low myopia (LM), and 14 eyes of high myopia (HM) patients. The V3–V4 region of the 16S rRNA gene was
amplified and then sequenced. Statistical analysis was performed to investigate differences in the taxonomy and diversity
between two groups. Compared to LM, higher Ocular Surface Disease Index (OSDI) scores were observed in HM group. The
Shannon index of the HM was lower than that of the LM group (P = 0.017). Principle coordinate analysis and Partial Least
Squares Discrimination Analysis showed distinct microbiome composition between two groups. At the phylum level, there
were higher relative abundances of Proteobacteria (68.27% vs 38.51%) and lower abundances of Actinobacteria (3.71% vs
9.19%) in HM, compared to LM group (P = 0.031, 0.010, respectively). At the genus level, the abundances of Acinetobacter
in HM (18.16%) were significantly higher than the LM (6.52%) group (P = 0.011). Actinobacteria levels were negatively
correlated with the myopic spherical equivalent and OSDI scores. Moreover, positive correlations were found between
Proteobacteria levels and OSDI scores, Acinetobacter levels were positively correlated with myopic spherical equivalent
and OSDI scores. In conclusion, HM Patients have bacterial microbiota imbalance in the conjunctival sac, compared with
LM patients. Proteobacteria, Actinobacteria, Acinetobacter may play roles in the HM associated ocular surface irritation.
Citations
Citations to this article as recorded by
Gut Microbiota Profiles in Myopes and Nonmyopes Wan E. W. Omar, Gurdeep Singh, Andrew J. McBain, Fiona Cruickshank, Hema Radhakrishnan Investigative Ophthalmology & Visual Science.2024; 65(5): 2. CrossRef
Aptamers are short single-stranded DNA or RNA oligonucleotides
capable of binding with high affinity and specificity
to target molecules. Because of their durability and ease of synthesis,
aptamers are used in a wide range of biomedical fields,
including the diagnosis of diseases and targeted delivery of
therapeutic agents. The aptamers were selected using a process
called systematic evolution of ligands by exponential enrichment
(SELEX), which has been improved for various research
purposes since its development in 1990. In this protocol,
we describe a modified SELEX method that rapidly produces
high aptamer screening yields using two types of magnetic
beads. Using this method, we isolated an aptamer that
specifically binds to an antimicrobial peptide. We suggest that
by conjugating a small therapeutic-specific aptamer to a gold
nanoparticle-based delivery system, which enhances the stability
and intracellular delivery of peptides, aptamers selected
by our method can be used for the development of therapeutic
agents utilizing small therapeutic peptides.
Citations
Citations to this article as recorded by
Recent approaches in the application of antimicrobial peptides in food preservation Satparkash Singh, Bhavna Jha, Pratiksha Tiwari, Vinay G. Joshi, Adarsh Mishra, Yashpal Singh Malik World Journal of Microbiology and Biotechnology.2024;[Epub] CrossRef
Design and application of microfluidics in aptamer SELEX and Aptasensors Shikun Zhang, Yingming Zhang, Zhiyuan Ning, Mengxia Duan, Xianfeng Lin, Nuo Duan, Zhouping Wang, Shijia Wu Biotechnology Advances.2024; 77: 108461. CrossRef
Nanogenosensors based on aptamers and peptides for bioelectrochemical cancer detection: an overview of recent advances in emerging materials and technologies Babak Mikaeeli Kangarshahi, Seyed Morteza Naghib Discover Applied Sciences.2024;[Epub] CrossRef
Recent progress of SELEX methods for screening nucleic acid aptamers Chao Zhu, Ziru Feng, Hongwei Qin, Lu Chen, Mengmeng Yan, Linsen Li, Feng Qu Talanta.2024; 266: 124998. CrossRef
Aptamer-conjugated gold nanoparticles platform as the intracellular delivery of antibodies for cancer therapy Ji-Hyun Yeom, Eunkyoung Shin, Hanyong Jin, Haifeng Liu, Yongyang Luo, Youngwoo Nam, Minkyung Ryu, Wooseok Song, Heeyoun Chi, Jeongkyu Kim, Kangseok Lee, Jeehyeon Bae Journal of Industrial and Engineering Chemistry.2023; 126: 480. CrossRef
Regulation of transforming growth factor-β signaling as a therapeutic approach to treating colorectal cancer Jana Maslankova, Ivana Vecurkovska, Miroslava Rabajdova, Jana Katuchova, Milos Kicka, Michala Gayova, Vladimir Katuch World Journal of Gastroenterology.2022; 28(33): 4744. CrossRef
Caixin Yang , Xingxing Lian , Yanpeng Cheng , Yifan Jiao , Jing Yang , Kui Dong , Shan Lu , Xin-He Lai , Dong Jin , Han Zheng , Ji Pu , Suping Wang , Liyun Liu , Jianguo Xu
J. Microbiol. 2022;60(6):585-593. Published online April 18, 2022
Two Gram-stain-positive, catalase-negative, non-spore-forming,
cocci-shaped strains (dk850T and JY899) were isolated
from the feces of Equus kiang in the Qinghai-Tibet Plateau of
China. 16S rRNA gene sequence-based phylogenetic analyses
showed that strains dk850T and JY899 belong to the genus
Flaviflexus, closest to F. salsibiostraticola KCTC 33148T, F. ciconiae
KCTC 49253T and F. huanghaiensis H5T. The DNA
G + C content of strain dk850T was 62.9%. The digital DNADNA
hybridization values of strain dk850T with the closely related
species were below the 70% threshold for species demarcation.
The two strains grew best at 28°C on brain heart infusion
(BHI) agar with 5% sheep blood. All strains had C18:1ω9c
and C16:0 as the major cellular fatty acids. MK-9(H4) was the
major menaquinone in strain dk850T. The major polar lipids
included diphosphatidylglycerol and an unidentified phospholipid.
Strains dk850T and JY899 were identified as carrying
a class 1 integron containing the aminoglycoside resistance
gene aadA11, both strains were resistant to spectinomycin
and streptomycin. Based on several lines of evidence
from phenotypic and phylogenetic analyses, strains dk850T
and JY899 represent a novel species of the genus Flaviflexus,
for which the name Flaviflexus equikiangi sp. nov. is proposed.
The type strain is dk850T (= CGMCC 1.16593T = JCM 33598T).
Infection by Sclerotium rolfsii will cause serious disease and
lead to significant economic losses in chili pepper. In this
study, the response of pepper during S. rolfsii infection was
explored by electron microscopy, physiological determination
and integrated proteome and metabolome analyses. Our results
showed that the stomata of pepper stems were important
portals for S. rolfsii infection. The plant cell morphology
was significantly changed at the time of the fungal hyphae just
contacting (T1) or surrounding (T2) the pepper. The chlorophyll,
carotenoid, and MDA contents and the activities of
POD, SOD, and CAT were markedly upregulated at T1 and
T2. Approximately 4129 proteins and 823 metabolites were
clearly identified in proteome and metabolome analyses, respectively.
A change in 396 proteins and 54 metabolites in
pepper stem tissues was observed at T1 compared with 438
proteins and 53 metabolites at T2. The proteins and metabolites
related to photosynthesis and antioxidant systems in
chloroplasts and mitochondria were disproportionally affected
by S. rolfsii infection, impacting carbohydrate and amino
acid metabolism. This study provided new insights into the
response mechanism in pepper stems during S. rolfsii infection,
which can guide future work on fungal disease resistance
breeding in pepper.
Citations
Citations to this article as recorded by
Multifaceted chemical and bioactive features of Ag@TiO2 and Ag@SeO2 core/shell nanoparticles biosynthesized using Beta vulgaris L. extract Khaled M. Elattar, Fatimah O. Al-Otibi, Mohammed S. El-Hersh, Attia A. Attia, Noha M. Eldadamony, Ashraf Elsayed, Farid Menaa, WesamEldin I.A. Saber Heliyon.2024; 10(7): e28359. CrossRef
Fighting for Survival at the Stomatal Gate Maeli Melotto, Brianna Fochs, Zachariah Jaramillo, Olivier Rodrigues
Annual Review of Plant Biology
.2024; 75(1): 551. CrossRef
Genetic Regulation, Environmental Cues, and Extraction Methods for Higher Yield of Secondary Metabolites in Capsicum Khushbu Islam, Abdul Rawoof, Ajay Kumar, John Momo, Ilyas Ahmed, Meenakshi Dubey, Nirala Ramchiary Journal of Agricultural and Food Chemistry.2023; 71(24): 9213. CrossRef
Integrated pathological, proteomic and metabolomic analyses reveal significant changes of Eriocheir sinensis hepatopancreatic in response to the microsporidian Hepatospora eriocheir infection Libo Hou, Mengdi Wang, Hao Li, Lei Zhu, Xianghui Kong, Wei Gu, Keran Bi, Jie Du, Qingguo Meng Aquaculture.2023; 577: 739994. CrossRef
Helicobacter pylori outer membrane inflammatory protein
A (OipA) was originally named for its role in inducing inflammation
in the host, as evidenced by high mucosal IL-8
levels. Expression of OipA is regulated by phase variation of
a CT dinucleotide-repeat located in the 5region of the gene.
However, little is known about OipA geographic diversity
across isolates. To address this gap, we conducted a large-scale
molecular epidemiologic analysis using H. pylori clinical isolates
obtained from two geographically distinct populations:
Korea and the United States (US). Most Korean isolates (98.7%)
possessed two copies of oipA located at two specific loci (A
and B) while all US isolates contained only one copy of oipA
at locus A. Furthermore, most Korean oipA (94.8%) possessed
three or less CT repeats while most US oipA (96.6%) contained
five or more CT repeats. Among the two copies, all Korean
H. pylori possessed at least one oipA ‘on’ phase variant while
the single copy of oipA in US isolates showed 56.2% ‘on’ and
43.8% ‘off.’ Thus, host differences seem to have driven geographic
diversification of H. pylori across these populations
such that OipA expression in US isolates is still regulated by
phase variation with 5 or more CT repeats, while Korean isolates
always express OipA; duplication of the oipA combined
with a reduction of CT repeats to three or less ensures continued
expression. En masse, these findings suggest that diversity
in the oipA gene copy number, CT repeats, and phase
variation among H. pylori from different populations may
confer a benefit in adaptation to particular host populations.
Citations
Citations to this article as recorded by
Genetic diversity of the oipA gene among Helicobacter pylori isolates and clinical outcome in Vietnam Thi Hong Nhung Thai, Hong Phong Nguyen, Thi Hai Yen Nguyen, Thi Be Hai Nguyen, Thai Hoa Nguyen, Thi Mai Ngan Nguyen, Thi Minh Thi Ha Infection, Genetics and Evolution.2023; 112: 105438. CrossRef
Characterization of East-Asian Helicobacter pylori encoding Western EPIYA-ABC CagA Kavinda Tissera, Myeong-A Kim, Jing Lai, Sacheera Angulmaduwa, Aeryun Kim, D. Scott Merrell, Ji-Hye Kim, Hanfu Su, Jeong-Heon Cha Journal of Microbiology.2022; 60(2): 207. CrossRef
Helicobacter pylori colonizes human gastric mucosa. Its infection
is associated with gastric diseases including gastric
cancer. CagA is one of the most important toxins produced
by H. pylori. It is related to gastric cancer which can be injected
into host cells via a type IV secretion system (T4SS).
CagL is a structural component of T4SS apparatus, which
triggers host cell signaling pathway. It has been reported that
CagL polymorphisms may influence the severity of disease
development. To explore the contribution of CagL polymorphisms
between East Asian and Western H. pylori in pathogenesis,
cagL gene in G27 H. pylori was swapped by K74 cagL
which is identical to East Asian CagL consensus sequence and
by Western 26695 H. pylori, resulting in G27ΔcagL/cagLK74
and G27ΔcagL/cagL26695, respectively. Intriguingly, G27ΔcagL/
cagLK74 showed significantly less ability of IL-8 induction
than G27ΔcagL/cagL26695 while displayed similar abilities of
CagA phosphorylation, and cell elongation. Taken together,
this study suggests that the CagL polymorphism may influence
IL-8 induction, and K74 CagL has less ability to induce
IL-8 secretion than G27 or 26695 CagL. Further research
should address how the different capabilities of IL-8 induction
between intraspecies-CagL are associated with the large
differences of the incidence of gastric cancer between East
Asian and Western countries.
Citations
Citations to this article as recorded by
Roles of the components of the
cag
-pathogenicity island encoded type IV secretion system in
Helicobacter pylori
Lingzhu Gou, Xiaoping Yang, Jianwei Yun, Zenghui Ma, Xiaofeng Zheng, Hongwei Du, Dekui Zhang Future Microbiology.2024; 19(14): 1253. CrossRef
Antibacterial and Immunoregulatory Effects of Metformin against Helicobacter pylori Infection in Rat Model Hassan Valadbeigi, Saeed Khoshnood, Babak Negahdari, Mohd Azmuddin Abdullah, Mohammad Hossein Haddadi, Abhimanyu Abhimanyu BioMed Research International.2023;[Epub] CrossRef
New CagL Amino Acid Polymorphism Patterns of Helicobacter pylori in Peptic Ulcer and Non-Ulcer Dyspepsia Reyhan Caliskan, Silva Polat Sari, Bahadir Ercan, Kivanc Derya Peker, Mehtap Omac Sonmez, Ozer Akgul, Burcu Sapmaz, Aliye Soylu, Gokhan Tolga Adas, Yasar Ali Oner, Pelin Yuksel Mayda Medicina.2022; 58(12): 1738. CrossRef
Geographic diversity in Helicobacter pylori oipA genotype between Korean and United States isolates Aeryun Kim, Jing Lai, D. Scott Merrell, Ji-Hye Kim, Hanfu Su, Jeong-Heon Cha Journal of Microbiology.2021; 59(12): 1125. CrossRef
A Gram-stain-negative, strictly aerobic, short-rod-shaped,
and non-motile bacterial strain designated HSLHS9T was
isolated from surface seawater collected from the South China
Sea. Strain HSLHS9T could grow at 15–41°C (optimum 28°C),
at pH 5.0–9.0 (optimum 6.0–7.0), and in 0–7% (w/v) NaCl
(optimum 2–3%). Phylogenetic analysis based on 16S rRNA
gene sequences indicated that strain HSLHS9T shared high
identities with the closely related Parahaliea aestuarii S2-26T
(98.6%) and Parahaliea mediterranea 7SM29T (97.8%) and
formed a distinct lineage within the genus Parahaliea. Wholegenome
sequencing of strain HSLHS9T revealed the size of 4.8
Mbp and DNA G + C content of 61.8 mol%. Strain HSLHS9T
shared the digital DNA-DNA hybridization values of 22.4%
and 23.0%, and the average nucleotide identities of 79.7%
and 79.9%, respectively, with the two type strains above. The
predominant cellular fatty acids of the strain were summed
feature 8 (C18:1 ω6c and/or C18:1 ω7c), summed feature 3 (C16:1
ω7c and/or C16:1 ω6c), C17:1 ω8c, and C16:0. The sole isoprenoid
quinone was identified as Q-8. The polar lipids were phosphatidylglycerol,
diphosphatidylglycerol, phosphatidylethanolamine,
aminolipid, and two glycolipids. Based on taxonomic
data obtained in this study, it is suggested that strain
HSLHS9T represents a novel species of the genus Parahaliea,
for which the name Parahaliea maris sp. nov. is proposed.
The type strain is HSLHS9T (= MCCC 1A06717T = KCTC
52307T). An emended description of the genus Parahaliea
is also provided.
Citations
Citations to this article as recorded by
A comparative analysis of the microbial communities and functional genes of the nitrogen cycling in mangroves of China, Indian and Malaysia Zhihui Qian, Yuyang Li, Amit Pratush, Jie Kan, Ji-Dong Gu, Tao Peng, Tongwang Huang, Zhong Hu International Biodeterioration & Biodegradation.2024; 190: 105767. CrossRef
Phylogenomic evaluation of Mangrovimicrobium sediminis gen. nov. sp. nov., the first nitrogen fixing member of the family Halieaceae adapted to mangrove habitat and reclassification of Halioglobus pacificus to Pseudohaliglobus pacificus comb. nov. Pravin Kumar, Ashish Verma, Pooja Yadav, Joyasree Das, Lalit Kumar, Srinivasan Krishnamurthi Science of The Total Environment.2024; 933: 172995. CrossRef
Abundant and rare bacteria in anthropogenic estuary: Community co-occurrence and assembly patterns Ziyue Shi, Lili Ma, Yingying Wang, Jie Liu Ecological Indicators.2023; 146: 109820. CrossRef
Isolation and characterization of tick-borne Roseomonas haemaphysalidis sp. nov. and rodent-borne Roseomonas marmotae sp. nov. Wentao Zhu, Juan Zhou, Shan Lu, Jing Yang, Xin-He Lai, Dong Jin, Ji Pu, Yuyuan Huang, Liyun Liu, Zhenjun Li, Jianguo Xu Journal of Microbiology.2022; 60(2): 137. CrossRef
Sediminihaliea albiluteola gen. nov., sp. nov., a new member of the family Halieaceae, isolated from marine sediment Shan Jiang, Feng-Bai Lian, You-Yang Sun, Xiao-Kui Zhang, Zong-Jun Du
International Journal of Systematic and Evolutionary Microbiology
.2021;[Epub] CrossRef
List of new names and new combinations previously effectively, but not validly, published Aharon Oren, George M. Garrity International Journal of Systematic and Evolutionary Microbiology.2020; 70(5): 2960. CrossRef
Notification of changes in taxonomic opinion previously published outside the IJSEM Aharon Oren, George Garrity
International Journal of Systematic and Evolutionary Microbiology
.2020; 70(7): 4061. CrossRef
Aequoribacter fuscus gen. nov., sp. nov., a new member of the family Halieaceae, isolated from coastal seawater Shan-Hui Li, Jaeho Song, Ilnam Kang, Juchan Hwang, Jang-Cheon Cho Journal of Microbiology.2020; 58(6): 463. CrossRef
A yellow pigmented, Gram-stain-negative, strictly aerobic,
rod-shaped, motile by means of gliding, catalase and oxidase
positive bacterium, designated strain DS2-AT, was isolated
from soil. Growth was observed at 4–32°C (optimum, 28°C),
pH 6–9 (optimum, 7.0), and with 0–0.25% (w/v) NaCl (optimum,
0%). Phylogenetic analysis of 16S rRNA gene sequence
revealed that strain DS2-AT belonged to the genus Flavobacterium
and was most closely related to Flavobacterium
aquatile LMG 4008T (96.4%), Flavobacterium terrae DSM
18829T (95.6%), Flavobacterium vireti THG-SM1T (95.5%),
Flavobacterium inkyongense IMCC27201T (95.4%), Flavobacterium
brevivitae TTM-43T (95.2%), and Flavobacterium
cucumis DSM 18830T (95.2%). Strain DS2-AT produces flexirubin-
type pigments. The major fatty acids were iso-C15:0,
iso-C17:0 3-OH, and iso-C15:0 3-OH. The major respiratory
quinone was identified as menaquinone-6. The major polar
lipid was found to be phosphatidylethanolamine. The average
nucleotide identity values between strain DS2-AT and selected
taxa, F. aquatile LMG 4008T, F. terrae DSM 18829T,
and F. cucumis DSM 18830T, were 72, 72.7, and 71.6%, respectively.
The draft genome of strain DS2-AT has a number
of 14 contigs, scaffold N50 of 476,310 bp and a total size of
3,563,867 bp. Additionally, strain DS2-AT contains 3,127 of
gene, 41 of tRNA, 6 of rRNA, and 3 of ncRNA. The DNA G
+ C content of stain DS2-AT was 40.7 mol%. Based on phylogenetic
and phenotypic analyses, strain DS2-AT is considered
as a novel species of the genus Flavobacterium, for which
the name Flavobacterium humi sp. nov., (type strain DS2-AT
= KACC 19715T = JCM 32786T) has been proposed.
Citations
Citations to this article as recorded by
A description of Joostella sp. strain CR20 with potential biotechnological applications Muhammad Ramziuddin Zakaria, Maša Vodovnik, Maša Zorec, Kok Jun Liew, Lili Tokiman, Chun Shiong Chong Antonie van Leeuwenhoek.2025;[Epub] CrossRef
Paenibacillus suaedae sp. nov. and Paenibacillus violae sp. nov., isolated from the roots of Suaeda japonica Makino and Viola mandshurica W. Becker with plant growth-promoting potential Inhyup Kim, Sunho Park, Yonghee Jung, Haejin Woo, Hyunji Lee, Subin Yook, Taegun Seo
International Journal of Systematic and Evolutionary Microbiology
.2024;[Epub] CrossRef
Pigments from pathogenic bacteria: a comprehensive update on recent advances Kusumita Acharya, Swarna Shaw, Sudipta Paul Bhattacharya, Shatarupa Biswas, Suman Bhandary, Arijit Bhattacharya World Journal of Microbiology and Biotechnology.2024;[Epub] CrossRef
Multiomics dissection of Brassica napus L. lateral roots and endophytes interactions under phosphorus starvation Can Liu, Zhen Bai, Yu Luo, Yanfeng Zhang, Yongfeng Wang, Hexin Liu, Meng Luo, Xiaofang Huang, Anle Chen, Lige Ma, Chen Chen, Jinwei Yuan, Ying Xu, Yantao Zhu, Jianxin Mu, Ran An, Cuiling Yang, Hao Chen, Jiajie Chen, Zaifang Li, Xiaodan Li, Yachen Dong, Ji Nature Communications.2024;[Epub] CrossRef
Production, characterization and in vitro biological activities of crude pigment from endophytic Micrococcus luteus associated with Avicennia marina Gayathri Devi Kandasamy, Preethi Kathirvel Archives of Microbiology.2024;[Epub] CrossRef
Comprehensive genome analysis of five novel flavobacteria: Flavobacterium piscisymbiosum sp. nov., Flavobacterium pisciphilum sp. nov., Flavobacterium flavipigmentatum sp. nov., Flavobacterium lipolyticum sp. nov. and Flavobacterium cupriresistens sp. nov Izzet Burcin Saticioglu, Hilal Ay, Soner Altun, Nihed Ajmi, Enes Said Gunduz, Huban Gocmen, Muhammed Duman Systematic and Applied Microbiology.2024; 47(4): 126518. CrossRef
Isolation of Massilia species capable of degrading Poly(3-hydroxybutyrate) isolated from eggplant (Solanum melongena L.) field Geeta Chhetri, Hyun-Joong Kim, Jong-Min Jeon, Jeong-Jun Yoon Chemosphere.2024; 368: 143776. CrossRef
Gilvirhabdus luticola gen. nov., sp. nov., a mesophilic and halophilic bacterium isolated from tidal flat sediment Jaincy N. Jayan, Hee-Su Kim, Sathiyaraj Srinivasan, Hyung-Seop Kim, Jae-Yon Yu, Sang-Seob Lee
International Journal of Systematic and Evolutionary Microbiology
.2024;[Epub] CrossRef
Planobacterium oryzisoli sp. nov., a novel bacterium isolated from roots of rice plant Geeta Chhetri, Inhyup Kim, Sunho Park, Yonghee Jung, Taegun Seo Archives of Microbiology.2023;[Epub] CrossRef
Characterization and Antioxidant Activity of Exopolysaccharides Produced by Lysobacter soyae sp. nov Isolated from the Root of Glycine max L. Inhyup Kim, Geeta Chhetri, Yoonseop So, Sunho Park, Yonghee Jung, Haejin Woo, Taegun Seo Microorganisms.2023; 11(8): 1900. CrossRef
Devosia oryzisoli sp. nov., a novel moderately halotolerant bacterium isolated from the roots of rice plants and genome mining revealed the biosynthesis potential as plant growth promoter Geeta Chhetri, Inhyup Kim, Taegun Seo Antonie van Leeuwenhoek.2023; 116(3): 231. CrossRef
A Review of the Chemistry and Biological Activities of Natural Colorants, Dyes, and Pigments: Challenges, and Opportunities for Food, Cosmetics, and Pharmaceutical Application Ardalan Pasdaran, Maryam Zare, Azar Hamedi, Azadeh Hamedi Chemistry & Biodiversity.2023;[Epub] CrossRef
Characteristics and adaptability of Flavobacterium panici BSSL-CR3 in tidal flat revealed by comparative genomic and enzymatic analysis Jina Kim, In-Tae Cha, Ki-Eun Lee, Youn Kyoung Son, Jaewoong Yu, Donghyeok Seol Archives of Microbiology.2023;[Epub] CrossRef
Chryseobacterium edaphi sp. nov. and Chryseobacterium gilvum sp. nov., isolated from soil Yonghee Jung, Geeta Chhetri, Inhyup Kim, Yoonseop So, Sunho Park, Haejin Woo, Ki-Ho Lee, Taegun Seo
International Journal of Systematic and Evolutionary Microbiology
.2023;[Epub] CrossRef
Marixanthotalea marina gen. nov., sp. nov., a bacterium in the family Flavobacteriaceae isolated from seawater Zi-Yue Fu, Hua-Peng Xue, Wei He, Guang-Yuan Ma, Ai Hua Zhang, Dao-Feng Zhang, Wen-Jun Li
International Journal of Systematic and Evolutionary Microbiology
.2023;[Epub] CrossRef
Ideonella oryzae sp. nov., isolated from soil, and Spirosoma liriopis sp. nov., isolated from fruits of Liriope platyphylla
Yonghee Jung, Geeta Chhetri, Inhyup Kim, Yoonseop So, Sunho Park, Taegun Seo
International Journal of Systematic and Evolutionary Microbiology
.2023;[Epub] CrossRef
Neoroseomonas alba sp. nov., Neoroseomonas nitratireducens sp. nov., Paraoseomonas indoligenes sp. nov and Paraoseomonas baculiformis sp. nov., isolated from the rhizosphere of paddy soil Yoonseop So, Geeta Chhetri, Inhyup Kim, Jiyoun Kim, Sunho Park, Yonghee Jung, Taegun Seo Antonie van Leeuwenhoek.2023; 116(10): 1009. CrossRef
Halomonas antri sp. nov., a carotenoid-producing bacterium isolated from surface seawater Yoonseop So, Geeta Chhetri, Inhyup Kim, Minchung Kang, Jiyoun Kim, Byungjo Lee, Wonhee Jang, Taegun Seo
International Journal of Systematic and Evolutionary Microbiology
.2022;[Epub] CrossRef
Devosia rhizoryzae sp. nov., and Devosia oryziradicis sp. nov., novel plant growth promoting members of the genus Devosia, isolated from the rhizosphere of rice plants Geeta Chhetri, Inhyup Kim, Minchung Kang, Jiyoun Kim, Yoonseop So, Taegun Seo Journal of Microbiology.2022; 60(1): 1. CrossRef
An Isolated Arthrobacter sp. Enhances Rice (Oryza sativa L.) Plant Growth Geeta Chhetri, Inhyup Kim, Minchung Kang, Yoonseop So, Jiyoun Kim, Taegun Seo Microorganisms.2022; 10(6): 1187. CrossRef
Chryseobacterium tagetis sp. nov., a plant growth promoting bacterium with an antimicrobial activity isolated from the roots of medicinal plant (Tagetes patula) Geeta Chhetri, Inhyup Kim, Jiyoun Kim, Yoonseop So, Taegun Seo The Journal of Antibiotics.2022; 75(6): 312. CrossRef
Sphingosinicella flava sp. nov., indole acetic acid producing bacteria isolated from maize field soil Geeta Chhetri, Minchung Kang, Jiyoun Kim, Inhyup Kim, Yoonseop So, Taegun Seo
International Journal of Systematic and Evolutionary Microbiology
.2021;[Epub] CrossRef
Fuscibacter oryzae gen. nov., sp. nov., a phosphate-solubilizing bacterium isolated from the rhizosphere of rice plant Geeta Chhetri, Minchung Kang, Jiyoun Kim, Inhyup Kim, Yoonseop So, Taegun Seo Antonie van Leeuwenhoek.2021; 114(9): 1453. CrossRef
Production, purification, and process optimization of intracellular pigment from novel psychrotolerant Paenibacillus sp. BPW19 Bhagyashree Padhan, Kasturi Poddar, Debapriya Sarkar, Angana Sarkar Biotechnology Reports.2021; 29: e00592. CrossRef
Taibaiella lutea sp. nov., Isolated from Ubiquitous Weedy Grass Geeta Chhetri, Inhyup Kim, Jiyoun Kim, Minchung Kang, Taegun Seo Current Microbiology.2021; 78(7): 2799. CrossRef
Flavobacterium tagetis sp. nov., a novel urea-hydrolysing bacterium isolated from the roots of Tagetes patula
Geeta Chhetri, Inhyup Kim, Minchung Kang, Jiyoun Kim, Yoonseop So, Taegun Seo
International Journal of Systematic and Evolutionary Microbiology
.2021;[Epub] CrossRef
Characterization of Phosphate Solubilising Bacteria Isolated from Rhizosphere Soils of Piper nigrum L. Ashritha ., B. Raghavendr, M. Ramya Rai, P. Nagaraj, P. Visweswara Biotechnology(Faisalabad).2021; 20(1): 15. CrossRef
Nocardioides donggukensis sp. nov. and Hyunsoonleella aquatilis sp. nov., isolated from Jeongbang Waterfall on Jeju Island Inhyup Kim, Geeta Chhetri, Jiyoun Kim, Minchung Kang, Yoonseop So, Byungjo Lee, Wonhee Jang, Taegun Seo
International Journal of Systematic and Evolutionary Microbiology
.2021;[Epub] CrossRef
Adhaeribacter rhizoryzae sp. nov., a fibrillar matrix-producing bacterium isolated from the rhizosphere of rice plant Geeta Chhetri, Jiyoun Kim, Inhyup Kim, Byungjo Lee, Wonhee Jang, Taegun Seo
International Journal of Systematic and Evolutionary Microbiology
.2020; 70(10): 5382. CrossRef
Reinekea thalattae sp. nov., a New Species of the Genus Reinekea Isolated from Surface Seawater in Sehwa Beach Inhyup Kim, Geeta Chhetri, Jiyoun Kim, Minchung Kang, Taegun Seo Current Microbiology.2020; 77(12): 4174. CrossRef
Flavobacterium alkalisoli sp. nov., isolated from rhizosphere soil of Suaeda salsa
Lian Xu, Hai-Tao Wang, Jin-Xin Zhang, Hui Zhang, Shuai Wang, Ji-Quan Sun
International Journal of Systematic and Evolutionary Microbiology
.2020; 70(6): 3888. CrossRef
Lewinella aurantiaca sp. nov., a carotenoid pigment-producing bacterium isolated from surface seawater Inhyup Kim, Geeta Chhetri, Jiyoun Kim, Minchung Kang, Taegun Seo
International Journal of Systematic and Evolutionary Microbiology
.2020; 70(12): 6180. CrossRef
Flavobacterium baculatum sp. nov., a carotenoid and flexirubin-type pigment producing species isolated from flooded paddy field Geeta Chhetri, Jiyoun Kim, Inhyup Kim, Minchung Kang, Byungjo Lee, Wonhee Jang, Taegun Seo
International Journal of Systematic and Evolutionary Microbiology
.2019;[Epub] CrossRef