Journal of Microbiology

Volume 60(5); May 2022

Review

The crosstalk between bacteria and host autophagy: host defense or bacteria offense: Lin Zheng , Fang Wei , Guolin Li; J. Microbiol. 2022;60(5):451-460. Published online April 29, 2022; DOI: https://doi.org/10.1007/s12275-022-2009-z

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Xenophagy is a specific selective autophagy for the elimination of intracellular bacteria. Current evidence suggests that the processes for host autophagy system to recognize and eliminate invading bacteria are complex, and vary according to different pathogens. Although both ubiquitin-dependent and ubiquitin-independent autophagy exist in host to defense invading bacteria, successful pathogens have evolved diverse strategies to escape from or paralyze host autophagy system. In this review, we discuss the mechanisms of host autophagy system to recognize and eliminate intracellular pathogens and the mechanisms of different pathogens to escape from or paralyze host autophagy system, with a particular focus on the most extensively studied bacteria.

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Complement C3 deposition restricts the proliferation of internalized Staphylococcus aureus by promoting autophagy
Yining Deng, Yunke Zhang, Tong Wu, Kang Niu, Xiaoyu Jiao, Wenge Ma, Chen Peng, Wenxue Wu
Frontiers in Cellular and Infection Microbiology.2024;[Epub] CrossRef
Innate immune response of host cells infected with Salmonella
Hongfei Fan, Juane Lu, Hao Wu, Haihua Ruan, Wenjun Song, Y.-T. Yu, P.P. Piccaluga, S. Xie
BIO Web of Conferences.2024; 111: 01022. CrossRef
Exploring the Connections: Autophagy, Gut Microbiota, and Inflammatory Bowel Disease Pathogenesis
Arunkumar Subramanian, Afrarahamed J, Tamilanban T, Vinoth Kumarasamy, M Yasmin Begum, Mahendran Sekar, Vetriselvan Subramaniyan, Ling Shing Wong, Adel Al Fatease
Journal of Inflammation Research.2024; Volume 17: 10453. CrossRef
Programmed cell death and Salmonella pathogenesis: an interactive overview
Yu Zhang, Maodou Xu, Yujiao Guo, Li Chen, Wanwipa Vongsangnak, Qi Xu, Lizhi Lu
Frontiers in Microbiology.2024;[Epub] CrossRef
Bacterial lipoprotein plays an important role in the macrophage autophagy and apoptosis induced by Salmonella typhimurium and Staphylococcus aureus
Shanshan Jiang, Jinyao He, Lijie Zhang, Qiaojiajie Zhao, Shuqi Zhao
Open Life Sciences.2023;[Epub] CrossRef
Xenophagy as a Strategy for Mycobacterium leprae Elimination during Type 1 or Type 2 Leprosy Reactions: A Systematic Review
Débora Dantas Nucci Cerqueira, Ana Letícia Silva Pereira, Ana Elisa Coelho da Costa, Tarcísio Joaquim de Souza, Matheus Santos de Sousa Fernandes, Fabrício Oliveira Souto, Patrícia d’Emery Alves Santos
Pathogens.2023; 12(12): 1455. CrossRef
Brucella BtpB Manipulates Apoptosis and Autophagic Flux in RAW264.7 Cells
Junmei Li, Lin Qi, Ziyang Diao, Mengyu Zhang, Bin Li, Yunyi Zhai, Mingyue Hao, Dong Zhou, Wei Liu, Yaping Jin, Aihua Wang
International Journal of Molecular Sciences.2022; 23(22): 14439. CrossRef

Journal Articles

Comparative analysis of the colistin resistance-regulating gene cluster in Klebsiella species: Sun Ju Kim , Hongbaek Cho , Kwan Soo Ko; J. Microbiol. 2022;60(5):461-468. Published online April 18, 2022; DOI: https://doi.org/10.1007/s12275-022-1640-z

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Abstract

CrrAB two-component regulatory system is associated with colistin resistance in Klebsiella pneumoniae. Recently, some K. pneumoniae isolates lacking crrAB genes have been identified. In this study, we investigated the distribution and structural variation of the crrBAC-kexD cluster. To evaluate the structural variation of the crrBAC-kexD cluster, we explored 59 clinical K. pneumoniae isolates from Korea, and 508 whole genomes of K. pneumoniae and other strains of Klebsiella sp. Significant structural variations in crrBAC-kexD and its surrounding regions were identified among K. pneumoniae genomes. Within the genus Klebsiella, the cluster was identified only in K. pneumoniae, K. variicola, and K. quasipneumoniae, which form the K. pneumoniae complex. Among the 304 available K. pneumoniae genomes, an intact crrBAC-kexD cluster was identified in 178 isolates (58.6%), while the cluster was absent in 90 isolates (29.6%). Partial deletions within the cluster were identified in 22 genomes (7.2%). The most diverse structural patterns of the crrBAC-kexD cluster were observed in ST11 strains. Some clades lacked the crrBAC-kexD cluster. The crrBAC-kexD cluster was identified in the genomes of other bacterial species, including Citrobacter freundii and Enterobacter ludwigii. The crrBAC-kexD cluster is proposed to have been acquired by the ancestor of the K. pneumoniae complex from other bacterial species and the cluster may have been lost and re-acquired repeatedly in K. pneumoniae strains according to the phylogenetic analysis. The dynamic evolution of the crrBAC-kexD cluster suggests that it may have other roles, in addition to colistin resistance, in bacterial physiology.

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Roles of crrAB two-component regulatory system in Klebsiella pneumoniae: growth yield, survival in initial colistin treatment stage, and virulence
Sun Ju Kim, Jong Hyun Shin, Hyunkeun Kim, Kwan Soo Ko
International Journal of Antimicrobial Agents.2024; 63(1): 107011. CrossRef
High prevalence of polymyxin-heteroresistant carbapenem-resistant Klebsiella pneumoniae and its within-host evolution to resistance among critically ill scenarios
Xiaoli Wang, Tianjiao Meng, Yunqi Dai, Hong-Yu Ou, Meng Wang, Bin Tang, Jingyong Sun, Decui Cheng, Tingting Pan, Ruoming Tan, Hongping Qu
Infection.2024;[Epub] CrossRef
Role of efflux pumps, their inhibitors, and regulators in colistin resistance
Yinhuan Ding, Jingchen Hao, Weijia Xiao, Caihong Ye, Xue Xiao, Chunxia Jian, Min Tang, Guangrong Li, Jinbo Liu, Zhangrui Zeng
Frontiers in Microbiology.2023;[Epub] CrossRef

Lysobacter ciconiae sp. nov., and Lysobacter avium sp. nov., isolated from the faeces of an Oriental stork: So-Yeon Lee , Pil Soo Kim , Hojun Sung , Dong-Wook Hyun , Jin-Woo Bae; J. Microbiol. 2022;60(5):469-477. Published online March 31, 2022; DOI: https://doi.org/10.1007/s12275-022-1647-5

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Abstract

Two Gram-stain-negative, mesophilic, strictly aerobic, nonspore forming, and yellow-pigmented strains with rod-shaped cells, designated H21R20T and H23M41T, were isolated from the faeces of an Oriental stork (Ciconia boyciana). Based on 16S rRNA gene sequences, both strains showed the highest similarity (98.3−98.4%) to the type strain of Lysobacter concretionis. Phylogenetic analysis based on the 16S rRNA genes and 92 bacterial core genes showed that strains H21R20T and H23M41T were robustly clustered with L. concretionis Ko07T. Whole genome sequencing revealed that the genomes of both strains were approximately 2.9 Mb in size. The DNA G + C contents of the H21R20T and H23M41T strains were 67.3 and 66.6%, respectively. The two strains showed 80.1−81.7% average nucleotide identity with L. concretionis Ko07T. Strain H21R20T grew optimally at 30°C and pH 8.0 and in the presence of 0.5–3% (wt/vol) NaCl, while strain H23M41T grew optimally at 30°C and pH 7.0–8.0 and in the presence of 0–3% (wt/vol) NaCl. Both strains possessed iso-C15:0, iso-C16:0 and summed feature 9 (iso-C17:1 ω9c and/or C16:0 10-methyl) as the major cellular fatty acids, ubiquinone Q-8 as a predominant quinone, and diphosphatidylglycerol, phosphatidylglycerol, and phosphatidylethanolamine as the major polar lipids. A multifaceted investigation demonstrated that strains H21R20T and H23M41T represent novel species of the genus Lysobacter, for which we propose the names Lysobacter ciconiae sp. nov. and Lysobacter avium sp. nov. for strains H21R20T (= KCTC 82316T = JCM 34832T) and H23M41T (= KCTC 62676T = JCM 33223T), respectively.

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Isolation and Characterization of an Antioxidant Aryl Polyene Pigment from Antarctic Bacterium Lysobacter sp. A03
Maria Elisa Pailliè-Jiménez, Paolo Stincone, Jamile Queiroz Pereira, Patricio Román Santagapita, Eliseu Rodrigues, Adriano Brandelli
Molecular Biotechnology.2024;[Epub] CrossRef
Luteimonas flava sp. nov. and Aquilutibacter rugosus gen. nov., sp. nov., isolated from freshwater environments in China and re-examining the taxonomic status of genera Luteimonas and Lysobacter
Huibin Lu, Li Chen, Yujing Wang, Peng Xing, Qinglong Wu
International Journal of Systematic and Evolutionary Microbiology .2024;[Epub] CrossRef
An update on novel taxa and revised taxonomic status of bacteria isolated from non-domestic animals described in 2022
Claire R. Burbick, Sara D. Lawhon, Erik Munson, Elizabeth Thelen, Amanda Zapp, Anastasia Wilson, Romney M. Humphries
Journal of Clinical Microbiology.2023;[Epub] CrossRef
Lysobacter changpingensis sp. nov., a novel species of the genus Lysobacter isolated from a rhizosphere soil of strawberry in China
Bang-Yan Niu, Dong-Jun Ren, Fang-Bo Zhang, Hong-Tu Zhu, Hai-Lei Wei, Ming-Chao Ma, Miao Gao
Folia Microbiologica.2023; 68(6): 991. CrossRef
Nocardioides palaemonis sp. nov. and Tessaracoccus palaemonis sp. nov., isolated from the gastrointestinal tract of lake prawn
Do-Yeon Kim, In-Chul Jeong, So-Yeon Lee, Yun-Seok Jeong, Jeong Eun Han, Euon Jung Tak, June-Young Lee, Pil Soo Kim, Dong-Wook Hyun, Jin-Woo Bae
International Journal of Systematic and Evolutionary Microbiology .2022;[Epub] CrossRef
Validation List no. 207. Valid publication of new names and new combinations effectively published outside the IJSEM
Aharon Oren, George Garrity
International Journal of Systematic and Evolutionary Microbiology .2022;[Epub] CrossRef

The periplasmic chaperone protein Psg_2795 contributes to the virulence of Pseudomonas savastanoi pv. glycinea: the causal agent of bacterial blight of soybean: Xiuhua Wang , Xiaoyan Zhang , Bao-Hui Lu , Jie Gao; J. Microbiol. 2022;60(5):478-487. Published online March 4, 2022; DOI: https://doi.org/10.1007/s12275-022-1469-5

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Abstract

Pseudomonas savastanoi pv. glycinea (Psg, also named P. syringae pv. glycinea and P. amygdali pv. glycinea) is the causative agent of bacterial blight in soybean. The identification of virulence factors is essential for understanding the pathogenesis of Psg. In this study, a mini-Tn5 transposon mutant library of Psg strain PsgNC12 was screened on soybean, and one low-virulent mini-Tn5 mutant, designated as 4573, was identified. Sequence analysis of the 4573-mutant revealed that the mini-Tn5 transposon was inserted in the Psg_2795 gene. Psg_2795 encodes a FimC-domain protein that is highly conserved in Pseudomonas. Further analysis revealed that the mutation and knockout of Psg_2795 results in a reduced virulence phenotype on soybean, decreased motility, weakened bacterial attachment to a glass surface and delayed the population growth within soybean leaves. The phenotype of the 4573-mutant could be complemented nearly to wild-type levels using an intact Psg_2795 gene. Collectively, our results demonstrate that Psg_2795 plays an important role in the virulence, motility, attachment and the population growth of PsgNC12 in soybean. This finding provides a new insight into the function of periplasmic chaperone proteins in a type I pilus and provides reference information for identifying Psg_2795 homologues in P. savastanoi and other bacteria.

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Vt35 antitoxin plays a central regulatory role in virulence of Pseudomonas savastanoi pv. glycinea on soybean
Viet Tru Nguyen, Nanami Sakata, Takako Ishiga, Giyu Usuki, Yoshiteru Hashimoto, Yasuhiro Ishiga
Journal of General Plant Pathology.2023; 89(4): 211. CrossRef

Randomized Controlled Trial

A split face study on the effect of an anti-acne product containing fermentation products of Enterococcus faecalis CBT SL-5 on skin microbiome modification and acne improvement: Hye Sung Han , Sun Hye Shin , Bo-Yun Choi , Nayeon Koo , Sanghyun Lim , Dooheon Son , Myung Jun Chung , Kui Young Park , Woo Jun Sul; J. Microbiol. 2022;60(5):488-495. Published online March 14, 2022; DOI: https://doi.org/10.1007/s12275-022-1520-6

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Abstract

Antibiotic-resistant Cutibacterium acnes and dysbiosis of the skin microbiome are of increasing concern in acne treatment. Enterococcus faecalis, a widely used probiotic, has shown benefits for acne treatment by exerting antimicrobial activity against C. acnes. Therefore, this study aimed to investigate the efficacy and safety of an E. faecalis CBT SL-5-extract-containing lotion in patients with mild-to-moderate acne. Twenty patients were enrolled in this randomized, placebo-controlled, split-face comparative study. Patients were treated with E. faecalis lotion on one side of the face and a vehicle lotion on the other side for 4 weeks. The efficacy outcome measures included improvement in the investigators’ assessment of acne severity, patient satisfaction, changes in skin parameters and diversity of the skin microbiome. The investigators’ assessment score was significantly improved on the test side compared to the control side, after 2 weeks (p = 0.009) and 6 weeks (p < 0.0005). However, TEWL and skin hydration were not significantly different between the two groups. The phylogenetic diversity of the skin microbiota decreased over time in the skin samples of test side. In conclusion, E. faecalis CBT SL-5 extract can be a feasible and well-tolerated option for improving acne severity and skin microbiome dysbiosis in mild-to-moderate acne patients.

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Efficacy of a Postbiotic Formulation Combined With Microneedling for Mild‐to‐Moderate Acne: A Self‐Control Study
Zhanhong Li, Peihui Li, Yu Xu, Changqing Yan, Xiufen Ma, Huiying Wang, Hong Cheng, Jing Zeng, Ting Li, Xinxian Li, Jia Zhou, Jie Zhang, Jianfeng Zhou, Rongya Yang, Yan Wu, Li Li, Wei Lai, Jiangyun Zhao, Zhe Liu, Qiong Meng
Journal of Cosmetic Dermatology.2024;[Epub] CrossRef
Using probiotics to treat acne vulgaris: systematic review
Aleena Boby, Grace Lee, Nicole Natarelli, Lilia Correa
Archives of Dermatological Research.2024;[Epub] CrossRef
Skin Deep: The Potential of Microbiome Cosmetics
Ju Hee Han, Hei Sung Kim
Journal of Microbiology.2024; 62(3): 181. CrossRef
The updates and implications of cutaneous microbiota in acne
Cong Huang, Fan Zhuo, Baoquan Han, Wenting Li, Bin Jiang, Kaoyuan Zhang, Xingling Jian, Zhenzhen Chen, Hui Li, Haiyan Huang, Xia Dou, Bo Yu
Cell & Bioscience.2023;[Epub] CrossRef
Cutibacterium acnes Dysbiosis: Alternative Therapeutics for Clinical Application
Sara Sá, Ruben Fernandes, Álvaro Gestoso, José Mário Macedo, Daniela Martins-Mendes, Ana Cláudia Pereira, Pilar Baylina
Applied Sciences.2023; 13(21): 12086. CrossRef

Journal Articles

Exploiting the antibacterial mechanism of phenazine substances from Lysobacter antibioticus 13-6 against Xanthomonas oryzae pv. oryzicola: Qi Liu , Jun Yang , Waqar Ahmed , Xiaoyan Wan , Lanfang Wei , Guanghai Ji; J. Microbiol. 2022;60(5):496-510. Published online March 31, 2022; DOI: https://doi.org/10.1007/s12275-022-1542-0

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Abstract

Bacterial leaf streak caused by Xanthomonas oryzae pv. oryzicola (Xoc) is one of the most destructive diseases affecting rice production worldwide. In this study, we extracted and purified phenazine substances from the secondary metabolites of Lysobacter antibioticus 13-6. The bacteriostatic mechanism of phenazine substances against Xoc was investigated through physiological response and transcriptomic analysis.
Results
showed that phenazine substances affects the cell membrane permeability of Xoc, which causes cell swelling and deformation, blockage of flagellum synthesis, and imbalance of intracellular environment. The changes in intracellular environment affect the physiological and metabolic functions of Xoc, which reduces the formation of pathogenic factors and pathogenicity. Through transcriptomic analysis, we found that among differentially expressed genes, the expression of 595 genes was induced significantly (275 up-regulated and 320 down-regulated). In addition, we observed that phenazine substances affects three main functions of Xoc, i.e., transmembrane transporter activity, DNA-mediated transposition, and structural molecular activity. Phenazine substances also inhibits the potassium ion transport system that reduces Xoc resistance and induces the phosphate ion transport system to maintain the stability of the internal environment. Finally, we conclude that phenazine substances could retard cell growth and reduce the pathogenicity of Xoc by affecting cell structure and physiological metabolism. Altogether, our study highlights latest insights into the antibacterial mechanism of phenazine substances against Xoc and provides basic guidance to manage the incidence of bacterial leaf streak of rice.

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Biocontrol potential of endophytic Bacillus subtilis A9 against rot disease of Morchella esculenta
Xue Chen, Yin Zhang, ShengQian Chao, LiLi Song, GuoGan Wu, Yu Sun, YiFan Chen, BeiBei Lv
Frontiers in Microbiology.2024;[Epub] CrossRef
A Novel Plant-Derived Biopesticide Mitigates Fusarium Root Rot of Angelica sinensis by Modulating the Rhizosphere Microbiome and Root Metabolome
Qi Liu, Waqar Ahmed, Guoli Li, Yilin He, Mohamed Mohany, Zhaoyu Li, Tong Shen
Plants.2024; 13(16): 2180. CrossRef
Trichoderma Production and Encapsulation Methods for Agricultural Applications
Erick Vindas-Reyes, Randall Chacón-Cerdas, William Rivera-Méndez
AgriEngineering.2024; 6(3): 2366. CrossRef
A Novel Dry-Cured Ham Broth-Derived Peptide JHBp2 Effectively Inhibits Salmonella typhimurium In Vitro: Integrated Metabolomic, Proteomic, and Molecular Simulation Analyses
Ziyi Yang, Zixu Wang, Ruoxin Wang, Wangang Zhang
Journal of Agricultural and Food Chemistry.2024; 72(25): 14433. CrossRef
Exploring the nematicidal mechanisms and control efficiencies of oxalic acid producing Aspergillus tubingensis WF01 against root-knot nematodes
Zhong-Yan Yang, Yuan-Chen Dai, Yuan-Qi Mo, Jia-Lun Wang, Li Ma, Pei-Ji Zhao, Ying Huang, Rui-Bin Wang, Wei Li, Salim S. Al-Rejaie, Jian-Jin Liu, Yi Cao, Ming-He Mo
Frontiers in Microbiology.2024;[Epub] CrossRef
Identification of the Ilex macrocarpa anthracnose pathogen and the antifungal potential of the cell-free supernatant of Bacillus velezensis against Colletotrichum fioriniae
Chun Fu, Shushan Wan, Peng Yang, Xizhu Zhao, Yueyao Yan, Shijiao Jiang, Habib Ali
Frontiers in Microbiology.2024;[Epub] CrossRef
Transcriptome profiling reveals the impact of various levels of biochar application on the growth of flue-cured tobacco plants
Yingfen Yang, Waqar Ahmed, Gang Wang, Chenghu Ye, Shichen Li, Meiwei Zhao, Jinhao Zhang, Junjie Wang, Saleh H. Salmen, Lianzhang Wu, Zhengxiong Zhao
BMC Plant Biology.2024;[Epub] CrossRef
Rice Varieties Intercropping Induced Soil Metabolic and Microbial Recruiting to Enhance the Rice Blast (Magnaporthe Oryzae) Resistance
Xiao-Qiao Zhu, Mei Li, Rong-Ping Li, Wen-Qiang Tang, Yun-Yue Wang, Xiao Fei, Ping He, Guang-Yu Han
Metabolites.2024; 14(9): 507. CrossRef
Characterization of a broad-spectrum antifungal strain, Streptomyces graminearus STR-1, against Magnaporthe oryzae
Wenyuan Shen, Renju Liu, Jiazheng Wang, Maolan Yang, Tuo Qi, Guosong Shu, Min He, Xuewei Chen
Frontiers in Microbiology.2024;[Epub] CrossRef
Evaluation of the novel endophytic fungus Chaetomium ascotrichoides 1‐24‐2 from Pinus massoniana as a biocontrol agent against pine wilt disease caused by Bursaphelenchus xylophilus
Md Kamaruzzaman, Lijun Zheng, Shun Zhou, Wenhua Ye, Yongqiang Yuan, Qiu Qi, Yongfeng Gao, Jiajin Tan, Yan Wang, Bingjia Chen, Zhiguang Li, Songsong Liu, Renjun Mi, Ke Zhang, Chen Zhao, Waqar Ahmed, Xinrong Wang
Pest Management Science.2024; 80(10): 4924. CrossRef
Whole-genome sequencing and comparative genome analysis of Xanthomonas fragariae YM2 causing angular leaf spot disease in strawberry
Yue Qiu, Fangjun Wei, Han Meng, Menglin Peng, Jinhao Zhang, Yilu He, Lanfang Wei, Waqar Ahmed, Guanghai Ji
Frontiers in Plant Science.2023;[Epub] CrossRef
Genetic Basis and Expression Pattern Indicate the Biocontrol Potential and Soil Adaption of Lysobacter capsici CK09
Pu Yang, Chaofan Qu, Miaomiao Yuan, Bo Xi, Xiu Jia, Ben Zhang, Lizhen Zhang
Microorganisms.2023; 11(7): 1768. CrossRef
Seed coat treatment by plant-growth-promoting rhizobacteria Lysobacter antibioticus 13–6 enhances maize yield and changes rhizosphere bacterial communities
Zhenlin Dai, Waqar Ahmed, Jun Yang, Xiuying Yao, Jinhao Zhang, Lanfang Wei, Guanghai Ji
Biology and Fertility of Soils.2023; 59(3): 317. CrossRef
The Antibacterial Effect of Selected Essential Oils and Their Bioactive Constituents on Pseudomonas savastanoi pv. savastanoi: Phytotoxic Properties and Potential for Future Olive Disease Control
Laura Košćak, Janja Lamovšek, Edyta Đermić, Sara Godena
Microorganisms.2023; 11(11): 2735. CrossRef
Plant-Microbe Interaction: Mining the Impact of Native Bacillus amyloliquefaciens WS-10 on Tobacco Bacterial Wilt Disease and Rhizosphere Microbial Communities
Waqar Ahmed, Zhenlin Dai, Jinhao Zhang, Shichen Li, Ayesha Ahmed, Shahzad Munir, Qi Liu, Yujiao Tan, Guanghai Ji, Zhengxiong Zhao, Lindsey Price Burbank
Microbiology Spectrum.2022;[Epub] CrossRef

Integrated proteomic and metabolomic analyses reveal significant changes in chloroplasts and mitochondria of pepper (Capsicum annuum L.) during Sclerotium rolfsii infection: Hongdong Liao , Xiangyu Wen , Xuelei Deng , Yonghong Wu , Jianping Xu , Xin Li , Shudong Zhou , Xuefeng Li , Chunhui Zhu , Feng Luo , Yanqing Ma , Jingyuan Zheng; J. Microbiol. 2022;60(5):511-525. Published online March 31, 2022; DOI: https://doi.org/10.1007/s12275-022-1603-4

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Abstract

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.

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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
Zinc and Boron Soil Applications Affect Athelia rolfsii Stress Response in Sugar Beet (Beta vulgaris L.) Plants
Tamalika Bhadra, Chandan Kumar Mahapatra, Md. Hosenuzzaman, Dipali Rani Gupta, Abeer Hashem, Graciela Dolores Avila-Quezada, Elsayed Fathi Abd_Allah, Md. Anamul Hoque, Swapan Kumar Paul
Plants.2023; 12(19): 3509. 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

Evaluation of Cyc1 protein stability in Acidithiobacillus ferrooxidans bacterium after E121D mutation by molecular dynamics simulation to improve electron transfer: Mahnaz Shojapour , Somayeh Farahmand , Faezeh Fatemi , Marzieh Dehghan Shasaltaneh; J. Microbiol. 2022;60(5):526-532. Published online March 14, 2022; DOI: https://doi.org/10.1007/s12275-022-1645-7

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Abstract

Cyc1 (Cytochrome c552) is a protein in the electron transport chain of the Acidithiobacillus ferrooxidans (Af) bacteria which obtain their energy from oxidation Fe2+ to Fe3+. The electrons are directed through Cyc2, RCY (rusticyanin), Cyc1, and Cox aa3 proteins to O2. Cyc1 protein consists of two chains, A and B. In the present study, a novel mutation (E121D) in the A chain of Cyc1 protein was selected due to electron receiving from Histidine 143 of RCY. Then, the changes performed in the E121D mutant were evaluated by MD simulations analyzes. Cyc1 and RCY proteins were docked by a Patchdock server. By E121D mutation, the connection between Zn 1388 of chain B and aspartate 121 of chain A weaken. Asp 121 gets farther from Zn 1388. Therefore, the aspartate gets closer to Cu 1156 of the RCY leading to the higher stability of the RCY/ Cyc1 complex. Further, an acidic residue (Glu121) becomes a more acidic residue (Asp121) and improves the electron transfer to Cyc1 protein. The results of RMSF analysis showed further ligand flexibility in mutation. This leads to fluctuation of the active site and increases redox potential at the mutation point and the speed of electron transfer. This study also predicts that in all respiratory chain proteins, electrons probably enter the first active site via glutamate and exit histidine in the second active site of each respiratory chain protein.

Citations

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Point mutation consideration in CcO protein of the electron transfer chain by MD simulation
Mahnaz Shojapour, Somayeh Farahmand
Journal of Molecular Graphics and Modelling.2022; 117: 108309. CrossRef

Meta-Analysis

Proposal of a health gut microbiome index based on a meta-analysis of Korean and global population datasets: Hyun-Seok Oh , Uigi Min , Hyejin Jang , Namil Kim , Jeongmin Lim , Mauricio Chalita , Jongsik Chun; J. Microbiol. 2022;60(5):533-549. Published online March 31, 2022; DOI: https://doi.org/10.1007/s12275-022-1526-0

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Abstract

The disruption of the human gut microbiota has been linked to host health conditions, including various diseases. However, no reliable index for measuring and predicting a healthy microbiome is currently available. Here, the sequencing data of 1,663 Koreans were obtained from three independent studies. Furthermore, we pooled 3,490 samples from public databases and analyzed a total of 5,153 fecal samples. First, we analyzed Korean gut microbiome covariates to determine the influence of lifestyle on variation in the gut microbiota. Next, patterns of microbiota variations across geographical locations and disease statuses were confirmed using a global cohort and disease data. Based on comprehensive comparative analysis, we were able to define three enterotypes among Korean cohorts, namely, Prevotella type, Bacteroides type, and outlier type. By a thorough categorization of dysbiosis and the evaluation of microbial characteristics using multiple datasets, we identified a wide spectrum of accuracy levels in classifying health and disease states. Using the observed microbiome patterns, we devised an index named the gut microbiome index (GMI) that could consistently predict health conditions from human gut microbiome data. Compared to ecological metrics, the microbial marker index, and machine learning approaches, GMI distinguished between healthy and non-healthy individuals with a higher accuracy across various datasets. Thus, this study proposes a potential index to measure health status of gut microbiome that is verified from multiethnic data of various diseases, and we expect this model to facilitate further clinical application of gut microbiota data in future.

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A comparison of the prevalence of respiratory pathogens and opportunistic respiratory pathogenic profile of ‘clean’ and ‘unclean’ removable dental prostheses
Tong Wah Lim, Shi Huang, Yufeng Zhang, Michael Francis Burrow, Colman McGrath
Journal of Dentistry.2024; 145: 104968. CrossRef
Characterization of pathogenic microbiome on removable prostheses with different levels of cleanliness using 2bRAD-M metagenomic sequencing
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Journal Article

The efficacy of a 2,4-diaminoquinazoline compound as an intranasal vaccine adjuvant to protect against influenza A virus infection in vivo: Kyungseob Noh , Eun Ju Jeong , Timothy An , Jin Soo Shin , Hyejin Kim , Soo Bong Han , Meehyein Kim; J. Microbiol. 2022;60(5):550-559. Published online April 18, 2022; DOI: https://doi.org/10.1007/s12275-022-1661-7

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Abstract

Adjuvants are substances added to vaccines to enhance antigen- specific immune responses or to protect antigens from rapid elimination. As pattern recognition receptors, Toll-like receptors 7 (TLR7) and 8 (TLR8) activate the innate immune system by sensing endosomal single-stranded RNA of RNA viruses. Here, we investigated if a 2,4-diaminoquinazolinebased TLR7/8 agonist, (S)-3-((2-amino-8-fluoroquinazolin- 4-yl)amino)hexan-1-ol (named compound 31), could be used as an adjuvant to enhance the serological and mucosal immunity of an inactivated influenza A virus vaccine. The compound induced the production of proinflammatory cytokines in macrophages. In a dose-response analysis, intranasal administration of 1 μg compound 31 together with an inactivated vaccine (0.5 μg) to mice not only enhanced virus-specific IgG and IgA production but also neutralized influenza A virus with statistical significance. Notably, in a virus-challenge model, the combination of the vaccine and compound 31 alleviated viral infection-mediated loss of body weight and increased survival rates by 40% compared with vaccine only-treated mice. We suggest that compound 31 is a promising lead compound for developing mucosal vaccine adjuvants to protect against respiratory RNA viruses such as influenza viruses and potentially coronaviruses.

Citations

Citations to this article as recorded by

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