BacteriaPub Date : 2024-01-29DOI: 10.3390/bacteria3010001
Abdullah Al Amin, Md. Hosen Ali, Md. Morshedul Islam, S. Chakraborty, Muhammad Humayun Kabir, M. A. R. Khokon
{"title":"Variations in Morpho-Cultural Characteristics and Pathogenicity of Fusarium moniliforme of Bakanae Disease of Rice and Evaluation of In Vitro Growth Suppression Potential of Some Bioagents","authors":"Abdullah Al Amin, Md. Hosen Ali, Md. Morshedul Islam, S. Chakraborty, Muhammad Humayun Kabir, M. A. R. Khokon","doi":"10.3390/bacteria3010001","DOIUrl":"https://doi.org/10.3390/bacteria3010001","url":null,"abstract":"Bakanae is one of the important diseases of rice in Bangladesh that causes substantial yield loss every year. We collected thirty isolates of Fusarium spp. from bakanae-infected rice plants from different agroecological zones of Bangladesh and investigated the variations in cultural and morphological characteristics and pathogenicity. Diversity was found in cultural characteristics, viz., colony features, phialide, chlamydospore formation, shape, and size of macro- and microconidia. Three variants of Fusarium species such as F. moniliforme, F. fujikuroi, and F. proliferatum were identified on PDA media based on their cultural and morphological characteristics. Isolate FM10 (F. moniliforme) exhibited the highest disease aggressiveness in developing elongated plants (26.50 cm), the highest number of chlorotic leaves (5.75), and a lower germination percentage. We evaluated different bioagents against the virulent isolate of F. moniliforme to develop a rice bakanae disease management approach. Four bioagents, viz., Trichoderma spp., Bacillus subtilis, Pseudomonas fluorescens, and Achromobacter spp., were evaluated for growth suppression of F. moniliforme. Among the bioagents, Achromobacter spp. and B. subtilis (BS21) showed 73.54% and 71.61% growth suppression, respectively. The investigation revealed that the application of Achromobacter spp. and B. subtilis (BS21) would be a potential candidate for effective and eco-friendly management of the bakanae disease of rice.","PeriodicalId":502262,"journal":{"name":"Bacteria","volume":"64 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140486710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BacteriaPub Date : 2023-12-12DOI: 10.3390/bacteria2040014
J. P. Díaz-Madriz, Esteban Zavaleta‐Monestel, Carolina Rojas-Chinchilla, Sebastián Arguedas‐Chacón, Bruno Serrano-Arias, Mery Alejandra Ferreto-Meza, Betzy María Romero-Chavarría, Priscila Zumbado-Amerling, A. Vásquez-Mendoza, Karla Sofia Gutiérrez-González, César Rodríguez
{"title":"Bacteremia Following Alkalihalobacillus clausii (Formerly Bacillus clausii) Administration in Immunosuppressed Adults: A Case Series","authors":"J. P. Díaz-Madriz, Esteban Zavaleta‐Monestel, Carolina Rojas-Chinchilla, Sebastián Arguedas‐Chacón, Bruno Serrano-Arias, Mery Alejandra Ferreto-Meza, Betzy María Romero-Chavarría, Priscila Zumbado-Amerling, A. Vásquez-Mendoza, Karla Sofia Gutiérrez-González, César Rodríguez","doi":"10.3390/bacteria2040014","DOIUrl":"https://doi.org/10.3390/bacteria2040014","url":null,"abstract":"(1) Background: Given the widespread use of Alkalihalobacillus clausii (A. clausii) as a probiotic in recent decades and the detection of bacteremia cases in a group of patients, we sought to analyze cases of A. clausii bacteremia following oral probiotic use (2) Methods: A retrospective observational study was conducted at a private hospital in San Jose, Costa Rica. Cases of bacteremia caused by A. clausii confirmed by the microbiology laboratory were analyzed in patients who received oral treatment with this probiotic between January 2020 and January 2022. In addition, an isolate (HCB-AC2) was compared through whole genome sequencing to demonstrate the correlation of bacteremia and A. clausii. Possible vulnerability factors related to the development of this condition were determined. (3) Results: Four cases were identified in this hospital over 2 years. Genomic analysis of isolate HCB-AC2, using two different methods, showed identical results. This indicates that HCB-AC2 is genomically identical to ENTpro and the Enterogermina® reference genome. The median age was 71 years, and all patients had some degree of immunosuppression. All patients met at least three sepsis criteria at the time of bacterial identification. Most patients were treated with vancomycin and levofloxacin. Three of the identified patients died. (4) Conclusion: A. clausii can be used as a probiotic, but caution is advised when used in immunosuppressed and elderly patients. These findings align with those reported in similar case studies.","PeriodicalId":502262,"journal":{"name":"Bacteria","volume":"146 1-3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139183111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BacteriaPub Date : 2023-11-15DOI: 10.3390/bacteria2040012
Ruby Khan, Saima Wali, Bakht Pari
{"title":"Comprehensive Analysis of Klebsiella pneumoniae Culture Identification and Antibiogram: Implications for Antimicrobial Susceptibility Patterns from Sputum Samples in Mardan, Khyber Pakhtunkhwa, Pakistan","authors":"Ruby Khan, Saima Wali, Bakht Pari","doi":"10.3390/bacteria2040012","DOIUrl":"https://doi.org/10.3390/bacteria2040012","url":null,"abstract":"Klebsiella pneumoniae, a Gram-negative pathogen, poses a significant threat as a cause of community- and hospital-acquired infections worldwide. The emergence of multidrug-resistant strains, particularly in nosocomial settings, has further complicated the management of these infections. This study aimed to investigate the culture identification and antibiogram of K. pneumoniae isolated from sputum samples collected in various districts in Mardan, Khyber Pakhtunkhwa, Pakistan. A total of 16 sputum samples were collected from patients at the Mardan Medical Complex. Standard microbiological techniques were employed to identify K. pneumoniae, and the antibiotic susceptibility testing was performed using the Kirby–Bauer disc diffusion method, following CLSI guidelines. Among the confirmed K. pneumoniae isolates, approximately 50% were found to be multidrug-resistant. The results indicated resistance to several antibiotics, including vancomycin (30 g), amikacin (30 g), chloramphenicol (30 g), amoxicillin (30 g), and ticarcillin (75 g), while being susceptible to meropenem (10 g), piperacillin (100 g), and tazobactam (110 g). A bioinformatics analysis was also conducted to gain deeper insights into the resistance patterns and potential clustering of isolates. This comprehensive study provides valuable information on the epidemiological trends and antimicrobial susceptibility profile of K. pneumoniae in the region. The findings of this study highlight the urgent need for antimicrobial stewardship programs to combat the rising challenge of antibiotic resistance. Understanding the resistance landscape of K. pneumoniae can guide healthcare professionals in selecting appropriate antibiotics and improving patient outcomes. These data can contribute to the formulation of local antibiotic policies and assist clinicians in making rational choices for antibiotic therapy.","PeriodicalId":502262,"journal":{"name":"Bacteria","volume":"C-27 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139271103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
